Night Light of Cha-am (Phetchaburi) from space (Thailand) Src. Average luminocity for 10x10km area is 41.3896% and for 50x50km: 13.1195%.
Square area 10x10 km:
 3.46%
 3.46% 3.46%
 3.46% 6.28%
 6.28% 8.01%
 8.01% 5.41%
 5.41% 12.55%
 12.55% 3.25%
 3.25% 9.74%
 9.74% 19.05%
 19.05% 24.46%
 24.46% 4.33%
 4.33%Square area 50x50 km:
 0.52%
 0.52% 0.6%
 0.6% 2.45%
 2.45% 2.12%
 2.12% 2.03%
 2.03% 2.23%
 2.23% 2.5%
 2.5% 2.98%
 2.98% 5.07%
 5.07% 12%
 12% 67.51%
 67.51%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
13° 29' 4.9" North, 99° 15' 48.8" East
12° 48' 0" North, 99° 58' 0" East
12° 6' 48.3" North, 100° 40' 11.3" East
Some cities around Cha-am sort by population:
• Hua Hin
		25.5 km =15.8 mi,  181°
181°
• Pran Buri
		46.7 km =29 mi,  188°
188°
• Phetchaburi
		34.8 km =21.6 mi,  356°
356°
• Tha Yang
		18.7 km =11.6 mi,  339°
339°
• Samut Songkhram
		68.4 km =42.5 mi,  3°
3°
• Damnoen Saduak
		79.9 km =49.6 mi,  359°
359°
• Sam Roi Yot
		59.7 km =37.1 mi,  189°
189°
• Khao Yoi
		51.3 km =31.9 mi,  342°
342°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016