condition mean min max 4 h after light 0.776586 0.738725 0.814447 8 h after light 4.942505 4.63139 5.25362 12 h after light 14.629750000000001 12.3453 16.9142 4 h after dark 15.727049999999998 15.3394 16.1147 8 h after dark 8.515039999999999 7.86205 9.16803 12 h after dark 3.80243 3.71248 3.89238