diff --git a/CHANGELOG.md b/CHANGELOG.md
index a6b0649..4a7c4de 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.30.6
+
+* Take cluster distance into account when guessing a maxzoom
+
 ## 1.30.4
 
 * Features within the z0 tile buffer of the antimeridian (not only
diff --git a/Makefile b/Makefile
index 5b94ae3..e70265f 100644
--- a/Makefile
+++ b/Makefile
@@ -296,7 +296,7 @@ csv-test:
 	cmp tests/csv/out-null.mbtiles.json.check tests/csv/out-null.mbtiles.json
 	rm -f tests/csv/out-null.mbtiles.json.check tests/csv/out-null.mbtiles
 	# Same, but specifying csv with -L format
-	./tippecanoe -q -zg -f -o tests/csv/out.mbtiles -L'{"file":"", "format":"csv", "layer":"ne_110m_populated_places_simplecsv"}' < tests/csv/ne_110m_populated_places_simple.csv
+	./tippecanoe -q -zg -f -o tests/csv/out.mbtiles -L'{"file":"", "format":"csv", "layer":"ne_110m_populated_places_simple"}' < tests/csv/ne_110m_populated_places_simple.csv
 	./tippecanoe-decode -x generator tests/csv/out.mbtiles > tests/csv/out.mbtiles.json.check
 	cmp tests/csv/out.mbtiles.json.check tests/csv/out.mbtiles.json
 	rm -f tests/csv/out.mbtiles.json.check tests/csv/out.mbtiles
diff --git a/decode.cpp b/decode.cpp
index 455278a..9302976 100644
--- a/decode.cpp
+++ b/decode.cpp
@@ -94,7 +94,7 @@ void handle(std::string message, int z, unsigned x, unsigned y, std::set<std::st
 			fprintf(stderr, "Couldn't parse tile %d/%u/%u\n", z, x, y);
 			exit(EXIT_FAILURE);
 		}
-	} catch (protozero::unknown_pbf_wire_type_exception e) {
+	} catch (std::exception const& e) {
 		fprintf(stderr, "PBF decoding error in tile %d/%u/%u\n", z, x, y);
 		exit(EXIT_FAILURE);
 	}
diff --git a/main.cpp b/main.cpp
index cd1d407..e5e72cf 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1268,6 +1268,7 @@ int read_input(std::vector<source> &sources, char *fname, int maxzoom, int minzo
 				".geojson",
 				".geobuf",
 				".mbtiles",
+				".csv",
 				".gz",
 			};
 
@@ -1985,6 +1986,20 @@ int read_input(std::vector<source> &sources, char *fname, int maxzoom, int minzo
 			if (!quiet) {
 				fprintf(stderr, "Choosing a maxzoom of -z%d for features about %d feet (%d meters) apart\n", maxzoom, (int) ceil(dist_ft), (int) ceil(dist_ft / 3.28084));
 			}
+
+			bool changed = false;
+			while (maxzoom < 32 - full_detail && maxzoom < 33 - low_detail && cluster_distance > 0) {
+				unsigned long long zoom_mingap = ((1LL << (32 - maxzoom)) / 256 * cluster_distance) * ((1LL << (32 - maxzoom)) / 256 * cluster_distance);
+				if (avg > zoom_mingap) {
+					break;
+				}
+
+				maxzoom++;
+				changed = true;
+			}
+			if (changed) {
+				printf("Choosing a maxzoom of -z%d to keep most features distinct with cluster distance %d\n", maxzoom, cluster_distance);
+			}
 		}
 
 		if (dist_count != 0) {
diff --git a/tests/csv/out-null.mbtiles.json b/tests/csv/out-null.mbtiles.json
index d3e10b7..d41a7af 100644
--- a/tests/csv/out-null.mbtiles.json
+++ b/tests/csv/out-null.mbtiles.json
@@ -3,7 +3,7 @@
 "center": "0.000000,0.000000,0",
 "description": "tests/csv/out-null.mbtiles",
 "format": "pbf",
-"json": "{\"vector_layers\": [ { \"id\": \"ne_110m_populated_places_simplecsv\", \"description\": \"\", \"minzoom\": 0, \"maxzoom\": 0, \"fields\": {\"adm0_a3\": \"String\", \"adm0cap\": \"Number\", \"adm0name\": \"String\", \"adm1name\": \"String\", \"capalt\": \"Number\", \"capin\": \"String\", \"changed\": \"Number\", \"checkme\": \"Number\", \"diffascii\": \"Number\", \"diffnote\": \"String\", \"featurecla\": \"String\", \"geonameid\": \"Number\", \"iso_a2\": \"Mixed\", \"labelrank\": \"Number\", \"ls_match\": \"Number\", \"ls_name\": \"String\", \"megacity\": \"Number\", \"meganame\": \"String\", \"min_zoom\": \"Number\", \"name\": \"String\", \"namealt\": \"String\", \"nameascii\": \"String\", \"namediff\": \"Number\", \"namepar\": \"String\", \"natscale\": \"Number\", \"note\": \"String\", \"pop_max\": \"Number\", \"pop_min\": \"Number\", \"pop_other\": \"Number\", \"rank_max\": \"Number\", \"rank_min\": \"Number\", \"scalerank\": \"Number\", \"sov0name\": \"String\", \"sov_a3\": \"String\", \"worldcity\": \"Number\"} } ],\"tilestats\": {\"layerCount\": 1,\"layers\": [{\"layer\": \"ne_110m_populated_places_simplecsv\",\"count\": 247,\"geometry\": \"Point\",\"attributeCount\": 35,\"attributes\": [{\"attribute\": \"adm0_a3\",\"count\": 198,\"type\": \"string\",\"values\": [\"AFG\",\"AGO\",\"ALB\",\"AND\",\"ARE\",\"ARG\",\"ARM\",\"ATG\",\"AUS\",\"AUT\",\"AZE\",\"BDI\",\"BEL\",\"BEN\",\"BFA\",\"BGD\",\"BGR\",\"BHR\",\"BHS\",\"BIH\",\"BLR\",\"BLZ\",\"BOL\",\"BRA\",\"BRB\",\"BRN\",\"BTN\",\"BWA\",\"CAF\",\"CAN\",\"CHE\",\"CHL\",\"CHN\",\"CIV\",\"CMR\",\"COD\",\"COG\",\"COL\",\"COM\",\"CPV\",\"CRI\",\"CUB\",\"CYP\",\"CZE\",\"DEU\",\"DJI\",\"DMA\",\"DNK\",\"DOM\",\"DZA\",\"ECU\",\"EGY\",\"ERI\",\"ESP\",\"EST\",\"ETH\",\"FIN\",\"FJI\",\"FRA\",\"FSM\",\"GAB\",\"GBR\",\"GEO\",\"GHA\",\"GIN\",\"GMB\",\"GNB\",\"GNQ\",\"GRC\",\"GRD\",\"GTM\",\"GUY\",\"HKG\",\"HND\",\"HRV\",\"HTI\",\"HUN\",\"IDN\",\"IND\",\"IRL\",\"IRN\",\"IRQ\",\"ISL\",\"ISR\",\"ITA\",\"JAM\",\"JOR\",\"JPN\",\"KAZ\",\"KEN\",\"KGZ\",\"KHM\",\"KIR\",\"KNA\",\"KOR\",\"KOS\",\"KWT\",\"LAO\",\"LBN\",\"LBR\"]},{\"attribute\": \"adm0cap\",\"count\": 2,\"type\": \"number\",\"values\": [0.00000000000,1.00000000000],\"min\": 0,\"max\": 1},{\"attribute\": \"adm0name\",\"count\": 198,\"type\": \"string\",\"values\": [\"Afghanistan\",\"Albania\",\"Algeria\",\"Andorra\",\"Angola\",\"Antigua and Barbuda\",\"Argentina\",\"Armenia\",\"Australia\",\"Austria\",\"Azerbaijan\",\"Bahrain\",\"Bangladesh\",\"Barbados\",\"Belarus\",\"Belgium\",\"Belize\",\"Benin\",\"Bhutan\",\"Bolivia\",\"Bosnia and Herzegovina\",\"Botswana\",\"Brazil\",\"Brunei\",\"Bulgaria\",\"Burkina Faso\",\"Burundi\",\"Cambodia\",\"Cameroon\",\"Canada\",\"Cape Verde\",\"Central African Republic\",\"Chad\",\"Chile\",\"China\",\"Colombia\",\"Comoros\",\"Congo (Brazzaville)\",\"Congo (Kinshasa)\",\"Costa Rica\",\"Croatia\",\"Cuba\",\"Cyprus\",\"Czech Republic\",\"Denmark\",\"Djibouti\",\"Dominica\",\"Dominican Republic\",\"East Timor\",\"Ecuador\",\"Egypt\",\"El Salvador\",\"Equatorial Guinea\",\"Eritrea\",\"Estonia\",\"Ethiopia\",\"Federated States of Micronesia\",\"Fiji\",\"Finland\",\"France\",\"Gabon\",\"Georgia\",\"Germany\",\"Ghana\",\"Greece\",\"Grenada\",\"Guatemala\",\"Guinea\",\"Guinea Bissau\",\"Guyana\",\"Haiti\",\"Honduras\",\"Hong Kong S.A.R.\",\"Hungary\",\"Iceland\",\"India\",\"Indonesia\",\"Iran\",\"Iraq\",\"Ireland\",\"Israel\",\"Italy\",\"Ivory Coast\",\"Jamaica\",\"Japan\",\"Jordan\",\"Kazakhstan\",\"Kenya\",\"Kiribati\",\"Kosovo\",\"Kuwait\",\"Kyrgyzstan\",\"Laos\",\"Latvia\",\"Lebanon\",\"Lesotho\",\"Liberia\",\"Libya\",\"Liechtenstein\",\"Lithuania\"]},{\"attribute\": \"adm1name\",\"count\": 204,\"type\": \"string\",\"values\": [\"Abu Dhabi\",\"Ad Dawhah\",\"Addis Ababa\",\"Ahal\",\"Al Kuwayt\",\"Al Qahirah\",\"Alger\",\"Amanat Al Asimah\",\"Amman\",\"Ankara\",\"Anseba\",\"Antananarivo\",\"Aqmola\",\"Ar Riyad\",\"Asunción\",\"Attiki\",\"Auckland\",\"Australian Capital Territory\",\"Baghdad\",\"Baki\",\"Bamako\",\"Banaadir\",\"Bangkok Metropolis\",\"Bangui\",\"Banjul\",\"Beijing\",\"Beirut\",\"Benguet\",\"Berlin\",\"Bern\",\"Bhaktapur\",\"Bioko Norte\",\"Bishkek\",\"Bissau\",\"Bogota\",\"Bratislavský\",\"British Columbia\",\"Brunei and Muara\",\"Brussels\",\"Bucharest\",\"Budapest\",\"Bujumbura Mairie\",\"California\",\"Cayo\",\"Centar\",\"Central\",\"Central Equatoria\",\"Centre\",\"Chisinau\",\"Chuquisaca\",\"Ciudad de Buenos Aires\",\"Ciudad de la Habana\",\"Colombo\",\"Colorado\",\"Comunidad de Madrid\",\"Conakry\",\"Dakar\",\"Damascus\",\"Dar-Es-Salaam\",\"Delhi\",\"Dhaka\",\"Dili\",\"District of Columbia\",\"Distrito Capital\",\"Distrito Federal\",\"Distrito Nacional\",\"Djibouti\",\"Dodoma\",\"Dubay\",\"Dublin\",\"Durrës\",\"East Berbice-Corentyne\",\"Erevan\",\"Estuaire\",\"F.C.T.\",\"Federal Capital Territory\",\"Florida\",\"Francisco Morazán\",\"Gauteng\",\"Genève\",\"Georgia\",\"Grad Beograd\",\"Grad Sofiya\",\"Grad Zagreb\",\"Grand Casablanca\",\"Greater Accra\",\"Guadalcanal\",\"Guatemala\",\"Hadjer-Lamis\",\"Harare\",\"Harju\",\"Hhohho\",\"Hovedstaden\",\"Illinois\",\"Istanbul\",\"Jakarta Raya\",\"Jerusalem\",\"Kabul\",\"Kadiogo\",\"Kampala\"]},{\"attribute\": \"capalt\",\"count\": 1,\"type\": \"number\",\"values\": [1],\"min\": 1,\"max\": 1},{\"attribute\": \"capin\",\"count\": 20,\"type\": \"string\",\"values\": [\"Administrative\",\"Capital of both\",\"Claimed as capi\",\"Claimed as inte\",\"De facto capita\",\"De facto, admin\",\"Former capital\",\"Judicial capita\",\"Legislative and\",\"Legislative cap\",\"Offical capital\",\"Official (const\",\"Official and ad\",\"Official and le\",\"Official capita\",\"Official, admin\",\"Official, de fa\",\"Official, legis\",\"UN Headquarters\",\"While Jerulsale\"]},{\"attribute\": \"changed\",\"count\": 7,\"type\": \"number\",\"values\": [0.00000000000,1.00000000000,20.00000000000,3.00000000000,4.00000000000,40.00000000000,5.00000000000],\"min\": 0,\"max\": 40},{\"attribute\": \"checkme\",\"count\": 2,\"type\": \"number\",\"values\": [0,5],\"min\": 0,\"max\": 5},{\"attribute\": \"diffascii\",\"count\": 2,\"type\": \"number\",\"values\": [0,1],\"min\": 0,\"max\": 1},{\"attribute\": \"diffnote\",\"count\": 12,\"type\": \"string\",\"values\": [\"Added place.\",\"Changed country.\",\"Changed feature class.\",\"Changed feature class. Changed scale rank.\",\"Changed feature to Admin-0 region capital.\",\"Changed scale rank.\",\"Corrected coordinates.\",\"Location adjusted.\",\"Location adjusted. Changed scale rank.\",\"Name changed.\",\"Name changed. Changed scale rank.\",\"Population from GeoNames. Changed scale rank.\"]},{\"attribute\": \"featurecla\",\"count\": 6,\"type\": \"string\",\"values\": [\"Admin-0 capital\",\"Admin-0 capital alt\",\"Admin-0 region capital\",\"Admin-1 capital\",\"Admin-1 region capital\",\"Populated place\"]},{\"attribute\": \"geonameid\",\"count\": 242,\"type\": \"number\",\"values\": [-1.00000000000,1018725.00000000000,1040652.00000000000,1070940.00000000000,108410.00000000000,112931.00000000000,1138958.00000000000,1176615.00000000000,1185241.00000000000,1221874.00000000000,1238992.00000000000,1252416.00000000000,1261481.00000000000,1275004.00000000000,1275339.00000000000,1277333.00000000000,1283240.00000000000,1298824.00000000000,146268.00000000000,1512569.00000000000,1526273.00000000000,1528675.00000000000,1529102.00000000000,1559804.00000000000,1581130.00000000000,160196.00000000000,160263.00000000000,1609350.00000000000,162183.00000000000,1642911.00000000000,1645457.00000000000,1651944.00000000000,1668341.00000000000,1690681.00000000000,1701668.00000000000,170654.00000000000,1728930.00000000000,1730025.00000000000,1735161.00000000000,1796236.00000000000,1815286.00000000000,1816670.00000000000,1819729.00000000000,1820906.00000000000,1821306.00000000000,1835848.00000000000,184745.00000000000,1850147.00000000000,1853909.00000000000,1857910.00000000000,1871859.00000000000,1880252.00000000000,202061.00000000000,2028462.00000000000,2075807.00000000000,2081986.00000000000,2088122.00000000000,2108502.00000000000,2110079.00000000000,2110394.00000000000,2113779.00000000000,2135171.00000000000,2144168.00000000000,2147714.00000000000,2158177.00000000000,2172517.00000000000,2193733.00000000000,2198148.00000000000,2220957.00000000000,223817.00000000000,2240449.00000000000,2253354.00000000000,2260535.00000000000,2267057.00000000000,2274895.00000000000,2279755.00000000000,2293538.00000000000,2306104.00000000000,2309527.00000000000,2314302.00000000000,2322794.00000000000,232422.00000000000,2332459.00000000000,2357048.00000000000,2365267.00000000000,2374775.00000000000,2377450.00000000000,2389853.00000000000,2392087.00000000000,2394819.00000000000,2399697.00000000000,2408770.00000000000,241131.00000000000,2413876.00000000000,2422465.00000000000,2427123.00000000000,2440485.00000000000,2460596.00000000000,2462881.00000000000,2464470.00000000000],\"min\": -1,\"max\": 6697380},{\"attribute\": \"iso_a2\",\"count\": 197,\"type\": \"mixed\",\"values\": [-99,\"AD\",\"AE\",\"AF\",\"AG\",\"AL\",\"AM\",\"AO\",\"AR\",\"AT\",\"AU\",\"AZ\",\"BA\",\"BB\",\"BD\",\"BE\",\"BF\",\"BG\",\"BH\",\"BI\",\"BJ\",\"BN\",\"BO\",\"BR\",\"BS\",\"BT\",\"BW\",\"BY\",\"BZ\",\"CA\",\"CD\",\"CF\",\"CG\",\"CH\",\"CI\",\"CL\",\"CM\",\"CN\",\"CO\",\"CR\",\"CU\",\"CV\",\"CY\",\"CZ\",\"DE\",\"DJ\",\"DK\",\"DM\",\"DO\",\"DZ\",\"EC\",\"EE\",\"EG\",\"EH\",\"ER\",\"ES\",\"ET\",\"FI\",\"FJ\",\"FM\",\"FR\",\"GA\",\"GB\",\"GD\",\"GE\",\"GH\",\"GM\",\"GN\",\"GQ\",\"GR\",\"GT\",\"GW\",\"GY\",\"HK\",\"HN\",\"HR\",\"HT\",\"HU\",\"ID\",\"IE\",\"IL\",\"IN\",\"IQ\",\"IR\",\"IS\",\"IT\",\"JM\",\"JO\",\"JP\",\"KE\",\"KG\",\"KH\",\"KI\",\"KM\",\"KN\",\"KP\",\"KR\",\"KW\",\"KZ\",\"LA\"],\"min\": -99,\"max\": -99},{\"attribute\": \"labelrank\",\"count\": 8,\"type\": \"number\",\"values\": [0,1,2,3,5,6,7,8],\"min\": 0,\"max\": 8},{\"attribute\": \"ls_match\",\"count\": 3,\"type\": \"number\",\"values\": [0,1,2],\"min\": 0,\"max\": 2},{\"attribute\": \"ls_name\",\"count\": 242,\"type\": \"string\",\"values\": [\"Abidjan\",\"Abu Dhabi\",\"Abuja\",\"Accra\",\"Addis Ababa\",\"Algiers\",\"Amman\",\"Amsterdam\",\"Andorra\",\"Ankara\",\"Antananarivo\",\"Apia\",\"Ashgabat\",\"Asmara\",\"Astana\",\"Asuncion\",\"Athens2\",\"Atlanta\",\"Auckland\",\"Baghdad\",\"Baguio City\",\"Baku\",\"Bamako\",\"Bandar Seri Begawan\",\"Bangalore\",\"Bangkok\",\"Bangui\",\"Banjul\",\"Basseterre\",\"Beijing\",\"Beirut\",\"Belgrade\",\"Belmopan\",\"Berlin\",\"Bern\",\"Bishkek\",\"Bissau\",\"Bloemfontein\",\"Bogota\",\"Brasilia\",\"Bratislava\",\"Brazzaville\",\"Bridgetown\",\"Brussels\",\"Bucharest\",\"Budapest\",\"Buenos Aires\",\"Bujumbura\",\"Cairo\",\"Calcutta\",\"Canberra\",\"Cape Town\",\"Caracas\",\"Casablanca\",\"Castries\",\"Chengdu\",\"Chicago\",\"Chisinau\",\"Colombo\",\"Conakry\",\"Copenhagen\",\"Cotonou\",\"Dakar\",\"Damascus\",\"Dar es Salaam\",\"Denver\",\"Dhaka\",\"Dili\",\"Djibouti\",\"Dodoma\",\"Doha\",\"Dubayy\",\"Dublin2\",\"Dushanbe\",\"Freetown\",\"Funafuti\",\"Gaborone\",\"Geneva\",\"Georgetown1\",\"Guatemala\",\"Hanoi\",\"Harare\",\"Hargeysa\",\"Havana\",\"Helsinki\",\"Hong Kong\",\"Honiara\",\"Houston\",\"Islamabad\",\"Istanbul\",\"Jakarta\",\"Jerusalem\",\"Johannesburg\",\"Juba\",\"Kabul\",\"Kampala\",\"Kathmandu\",\"Khartoum\",\"Kiev\",\"Kigali\"]},{\"attribute\": \"megacity\",\"count\": 2,\"type\": \"number\",\"values\": [0,1],\"min\": 0,\"max\": 1},{\"attribute\": \"meganame\",\"count\": 145,\"type\": \"string\",\"values\": [\"Abidjan\",\"Abuja\",\"Accra\",\"Addis Ababa\",\"Al Kuwayt (Kuwait City)\",\"Al-Khartum\",\"Al-Qahirah\",\"Amman\",\"Amsterdam\",\"Ankara\",\"Antananarivo\",\"Ar-Riyadh\",\"Asuncian\",\"Athnnai\",\"Atlanta\",\"Auckland\",\"Baghdad\",\"Baku\",\"Bamako\",\"Bangalore\",\"Bayrut\",\"Beijing\",\"Beograd\",\"Berlin\",\"Bishkek\",\"Bogota\",\"Brasglia\",\"Brazzaville\",\"Bruxelles-Brussel\",\"Bucuresti\",\"Budapest\",\"Buenos Aires\",\"Cape Town\",\"Caracas\",\"Chengdu\",\"Chicago\",\"Ciudad de Guatemala (Guatemala City)\",\"Ciudad de Mdxico\",\"Ciudad de Panam\",\"Conakry\",\"Cotonou\",\"Cramqi (Wulumqi)\",\"Dakar\",\"Dar es Salaam\",\"Dar-el-Beida\",\"Denver-Aurora\",\"Dhaka\",\"Dimashq\",\"Dubayy\",\"Dublin\",\"El Djazasr\",\"Freetown\",\"Harare\",\"Helsinki\",\"Hh Noi\",\"Hong Kong\",\"Houston\",\"Islamabad\",\"Istanbul\",\"Jakarta\",\"Johannesburg\",\"K\",\"Kabul\",\"Kampala\",\"Kathmandu\",\"Kigali\",\"Kinshasa\",\"Kolkata\",\"Krung Thep\",\"Kuala Lumpur\",\"Kyiv\",\"Kyoto\",\"La Habana\",\"La Paz\",\"Lagos\",\"Lima\",\"Lisboa\",\"Lomi\",\"London\",\"Los Angeles-Long Beach-Santa Ana\",\"Luanda\",\"Lusaka\",\"Madrid\",\"Managua\",\"Manila\",\"Maputo\",\"Melbourne\",\"Miami\",\"Minsk\",\"Monrovia\",\"Monterrey\",\"Montevideo\",\"Moskva\",\"Mumbai\",\"Muqdisho\",\"N'Djam-na\",\"Nairobi\",\"Nay Pyi Taw\",\"New York-Newark\",\"Niamey\"]},{\"attribute\": \"min_zoom\",\"count\": 15,\"type\": \"number\",\"values\": [1.7,2.0,2.1,2.7,3.0,3.7,4.0,4.7,5.0,5.1,5.6,6.0,6.1,6.7,7.0],\"min\": 1.7,\"max\": 7},{\"attribute\": \"name\",\"count\": 243,\"type\": \"string\",\"values\": [\"Abidjan\",\"Abu Dhabi\",\"Abuja\",\"Accra\",\"Addis Ababa\",\"Algiers\",\"Amman\",\"Amsterdam\",\"Andorra\",\"Ankara\",\"Antananarivo\",\"Apia\",\"Ashgabat\",\"Asmara\",\"Astana\",\"Asunción\",\"Athens\",\"Atlanta\",\"Auckland\",\"Baghdad\",\"Baguio City\",\"Baku\",\"Bamako\",\"Bandar Seri Begawan\",\"Bangalore\",\"Bangkok\",\"Bangui\",\"Banjul\",\"Basseterre\",\"Beijing\",\"Beirut\",\"Belgrade\",\"Belmopan\",\"Berlin\",\"Bern\",\"Bir Lehlou\",\"Bishkek\",\"Bissau\",\"Bloemfontein\",\"Bogota\",\"Brasília\",\"Bratislava\",\"Brazzaville\",\"Bridgetown\",\"Brussels\",\"Bucharest\",\"Budapest\",\"Buenos Aires\",\"Bujumbura\",\"Cairo\",\"Canberra\",\"Cape Town\",\"Caracas\",\"Casablanca\",\"Castries\",\"Chengdu\",\"Chicago\",\"Chișinău\",\"Colombo\",\"Conakry\",\"Cotonou\",\"Dakar\",\"Damascus\",\"Dar es Salaam\",\"Denver\",\"Dhaka\",\"Dili\",\"Djibouti\",\"Dodoma\",\"Doha\",\"Dubai\",\"Dublin\",\"Dushanbe\",\"Freetown\",\"Funafuti\",\"Gaborone\",\"Geneva\",\"Georgetown\",\"Guatemala\",\"Hanoi\",\"Harare\",\"Hargeysa\",\"Havana\",\"Helsinki\",\"Hong Kong\",\"Honiara\",\"Houston\",\"Islamabad\",\"Istanbul\",\"Jakarta\",\"Jerusalem\",\"Johannesburg\",\"Juba\",\"Kabul\",\"Kampala\",\"Kathmandu\",\"Khartoum\",\"Kiev\",\"Kigali\",\"Kingston\"]},{\"attribute\": \"namealt\",\"count\": 43,\"type\": \"string\",\"values\": [\"Al Kuwayt|Kuwait City\",\"Al-Khartum\",\"Al-Qahirah\",\"Ar-Riyadh\",\"Asuncion\",\"Athinai\",\"Bayrut\",\"Bengaluru\",\"Bogota\",\"Brasilia\",\"Bruxelles-Brussel\",\"Ciudad de Guatemala (Guatemala City)\",\"Ciudad de M\",\"Ciudad de Panam\",\"Dar-el-Beida\",\"Denver-Aurora\",\"Dimashq\",\"El Djazacr\",\"H\",\"Krung Thep\",\"Kyiv\",\"La Habana\",\"Lome\",\"Los Angeles-Long Beach-Santa Ana\",\"Muqdisho\",\"N'Djamnna\",\"Nay Pyi Taw\",\"New York-Newark\",\"Osaka-Kobe\",\"Ottawa-Gatineau\",\"P'yongyang\",\"Phnum Penh\",\"San Francisco-Oakland\",\"San Jose\",\"Sana'a'\",\"Sao Paulo|Sio Paulo\",\"T'Bilisi\",\"Tel Aviv-Jaffa\",\"Valparaiso\",\"Washington D.C.\",\"Yangon\",\"Yaounde\",\"rumqi|Wulumqi\"]},{\"attribute\": \"nameascii\",\"count\": 243,\"type\": \"string\",\"values\": [\"Abidjan\",\"Abu Dhabi\",\"Abuja\",\"Accra\",\"Addis Ababa\",\"Algiers\",\"Amman\",\"Amsterdam\",\"Andorra\",\"Ankara\",\"Antananarivo\",\"Apia\",\"Ashgabat\",\"Asmara\",\"Astana\",\"Asuncion\",\"Athens\",\"Atlanta\",\"Auckland\",\"Baghdad\",\"Baguio City\",\"Baku\",\"Bamako\",\"Bandar Seri Begawan\",\"Bangalore\",\"Bangkok\",\"Bangui\",\"Banjul\",\"Basseterre\",\"Beijing\",\"Beirut\",\"Belgrade\",\"Belmopan\",\"Berlin\",\"Bern\",\"Bir Lehlou\",\"Bishkek\",\"Bissau\",\"Bloemfontein\",\"Bogota\",\"Brasilia\",\"Bratislava\",\"Brazzaville\",\"Bridgetown\",\"Brussels\",\"Bucharest\",\"Budapest\",\"Buenos Aires\",\"Bujumbura\",\"Cairo\",\"Canberra\",\"Cape Town\",\"Caracas\",\"Casablanca\",\"Castries\",\"Chengdu\",\"Chicago\",\"Chisinau\",\"Colombo\",\"Conakry\",\"Cotonou\",\"Dakar\",\"Damascus\",\"Dar es 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Salaam\",\"Denver\",\"Dhaka\",\"Dili\",\"Djibouti\",\"Dodoma\",\"Doha\",\"Dubai\",\"Dublin\",\"Dushanbe\",\"Freetown\",\"Funafuti\",\"Gaborone\",\"Geneva\",\"Georgetown\",\"Guatemala\",\"Hanoi\",\"Harare\",\"Hargeysa\",\"Havana\",\"Helsinki\",\"Hong Kong\",\"Honiara\",\"Houston\",\"Islamabad\",\"Istanbul\",\"Jakarta\",\"Jerusalem\",\"Johannesburg\",\"Juba\",\"Kabul\",\"Kampala\",\"Kathmandu\",\"Khartoum\",\"Kiev\",\"Kigali\",\"Kingston\"]},{\"attribute\": \"namediff\",\"count\": 2,\"type\": \"number\",\"values\": [0,1],\"min\": 0,\"max\": 1},{\"attribute\": \"namepar\",\"count\": 12,\"type\": \"string\",\"values\": [\"Athenai\",\"Beograd\",\"Bombay\",\"Bucuresti\",\"Calcutta\",\"Copenhagen\",\"Dubayy\",\"Lisboa\",\"Moskva\",\"Praha\",\"Warszawa\",\"Wien\"]},{\"attribute\": \"natscale\",\"count\": 8,\"type\": \"number\",\"values\": [10,110,20,200,30,300,50,600],\"min\": 10,\"max\": 600},{\"attribute\": \"note\",\"count\": 2,\"type\": \"string\",\"values\": [\"Auckland metropolitan 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\"number\",\"values\": [1,10,11,12,13,14,2,3,4,5,6,7,8,9],\"min\": 1,\"max\": 14},{\"attribute\": \"scalerank\",\"count\": 8,\"type\": \"number\",\"values\": [0,1,2,3,4,6,7,8],\"min\": 0,\"max\": 8},{\"attribute\": \"sov0name\",\"count\": 197,\"type\": \"string\",\"values\": [\"Afghanistan\",\"Albania\",\"Algeria\",\"Andorra\",\"Angola\",\"Antigua and Barbuda\",\"Argentina\",\"Armenia\",\"Australia\",\"Austria\",\"Azerbaijan\",\"Bahamas, The\",\"Bahrain\",\"Bangladesh\",\"Barbados\",\"Belarus\",\"Belgium\",\"Belize\",\"Benin\",\"Bhutan\",\"Bolivia\",\"Bosnia and Herzegovina\",\"Botswana\",\"Brazil\",\"Brunei\",\"Bulgaria\",\"Burkina Faso\",\"Burundi\",\"Cambodia\",\"Cameroon\",\"Canada\",\"Cape Verde\",\"Central African Republic\",\"Chad\",\"Chile\",\"China\",\"Colombia\",\"Comoros\",\"Congo (Brazzaville)\",\"Congo (Kinshasa)\",\"Costa Rica\",\"Croatia\",\"Cuba\",\"Cyprus\",\"Czech Republic\",\"Denmark\",\"Djibouti\",\"Dominica\",\"Dominican Republic\",\"East 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[\"AFG\",\"AGO\",\"ALB\",\"AND\",\"ARE\",\"ARG\",\"ARM\",\"ATG\",\"AUS\",\"AUT\",\"AZE\",\"BDI\",\"BEL\",\"BEN\",\"BFA\",\"BGD\",\"BGR\",\"BHR\",\"BHS\",\"BIH\",\"BLR\",\"BLZ\",\"BOL\",\"BRA\",\"BRB\",\"BRN\",\"BTN\",\"BWA\",\"CAF\",\"CAN\",\"CHE\",\"CHL\",\"CHN\",\"CIV\",\"CMR\",\"COD\",\"COG\",\"COL\",\"COM\",\"CPV\",\"CRI\",\"CUB\",\"CYP\",\"CZE\",\"DEU\",\"DJI\",\"DMA\",\"DNK\",\"DOM\",\"DZA\",\"ECU\",\"EGY\",\"ERI\",\"ESP\",\"EST\",\"ETH\",\"FIN\",\"FJI\",\"FRA\",\"FSM\",\"GAB\",\"GBR\",\"GEO\",\"GHA\",\"GIN\",\"GMB\",\"GNB\",\"GNQ\",\"GRC\",\"GRD\",\"GTM\",\"GUY\",\"HND\",\"HRV\",\"HTI\",\"HUN\",\"IDN\",\"IND\",\"IRL\",\"IRN\",\"IRQ\",\"IS1\",\"ISL\",\"ITA\",\"JAM\",\"JOR\",\"JPN\",\"KAZ\",\"KEN\",\"KGZ\",\"KHM\",\"KIR\",\"KNA\",\"KOR\",\"KOS\",\"KWT\",\"LAO\",\"LBN\",\"LBR\",\"LBY\"]},{\"attribute\": \"worldcity\",\"count\": 2,\"type\": \"number\",\"values\": [0.00000000000,1.00000000000],\"min\": 0,\"max\": 1}]}]}}",
 "maxzoom": "0",
 "minzoom": "0",
 "name": "tests/csv/out-null.mbtiles",
@@ -11,7 +11,7 @@
 "version": "2"
 }, "features": [
 { "type": "FeatureCollection", "properties": { "zoom": 0, "x": 0, "y": 0 }, "features": [
-{ "type": "FeatureCollection", "properties": { "layer": "ne_110m_populated_places_simplecsv", "version": 2, "extent": 4096 }, "features": [
+{ "type": "FeatureCollection", "properties": { "layer": "ne_110m_populated_places_simple", "version": 2, "extent": 4096 }, "features": [
 { "type": "Feature", "properties": { "scalerank": 1, "natscale": 300, "labelrank": 2, "featurecla": "Populated place", "name": "Vancouver", "diffascii": 0, "nameascii": "Vancouver", "adm0cap": 0, "worldcity": 0, "megacity": 1, "sov0name": "Canada", "sov_a3": "CAN", "adm0name": "Canada", "adm0_a3": "CAN", "adm1name": "British Columbia", "iso_a2": "CA", "changed": 5, "namediff": 0, "diffnote": "Changed scale rank.", "pop_max": 2313328, "pop_min": 603502, "pop_other": 482002, "rank_max": 12, "rank_min": 11, "geonameid": 6173331, "meganame": "Vancouver", "ls_name": "Vancouver2", "ls_match": 1, "checkme": 0, "min_zoom": 2.1 }, "geometry": { "type": "Point", "coordinates": [ -123.134766, 49.325122 ] } }
 ,
 { "type": "Feature", "properties": { "scalerank": 1, "natscale": 300, "labelrank": 1, "featurecla": "Populated place", "name": "San Francisco", "namealt": "San Francisco-Oakland", "diffascii": 0, "nameascii": "San Francisco", "adm0cap": 0, "worldcity": 1, "megacity": 1, "sov0name": "United States", "sov_a3": "USA", "adm0name": "United States of America", "adm0_a3": "USA", "adm1name": "California", "iso_a2": "US", "changed": 0, "namediff": 0, "pop_max": 3450000, "pop_min": 732072, "pop_other": 27400, "rank_max": 12, "rank_min": 11, "geonameid": 5391959, "meganame": "San Francisco-Oakland", "ls_name": "San Francisco1", "ls_match": 1, "checkme": 0, "min_zoom": 2.7 }, "geometry": { "type": "Point", "coordinates": [ -122.519531, 37.788081 ] } }
diff --git a/tests/csv/out.mbtiles.json b/tests/csv/out.mbtiles.json
index 103d640..6452ff6 100644
--- a/tests/csv/out.mbtiles.json
+++ b/tests/csv/out.mbtiles.json
@@ -3,7 +3,7 @@
 "center": "0.000000,0.000000,0",
 "description": "tests/csv/out.mbtiles",
 "format": "pbf",
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\"String\", \"worldcity\": \"Number\"} } ],\"tilestats\": {\"layerCount\": 1,\"layers\": [{\"layer\": \"ne_110m_populated_places_simplecsv\",\"count\": 247,\"geometry\": \"Point\",\"attributeCount\": 35,\"attributes\": [{\"attribute\": \"adm0_a3\",\"count\": 198,\"type\": \"string\",\"values\": 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diff --git a/tests/ne_110m_populated_places/out/-zg_-K20_-r1_-yNAME.json b/tests/ne_110m_populated_places/out/-zg_-K20_-r1_-yNAME.json
new file mode 100644
index 0000000..d597579
--- /dev/null
+++ b/tests/ne_110m_populated_places/out/-zg_-K20_-r1_-yNAME.json
@@ -0,0 +1,1154 @@
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diff --git a/version.hpp b/version.hpp
index fd45f45..a357e32 100644
--- a/version.hpp
+++ b/version.hpp
@@ -1,6 +1,6 @@
 #ifndef VERSION_HPP
 #define VERSION_HPP
 
-#define VERSION "v1.30.4"
+#define VERSION "v1.30.6"
 
 #endif