condition mean min max 4 h after light 16.306821499999998 15.259215 17.354428 8 h after light 14.456448 14.444772 14.468124 12 h after light 14.604729500000001 13.720212 15.489247 4 h after dark 14.958337499999999 14.192992 15.723683 8 h after dark 17.957743999999998 15.727763 20.187725 12 h after dark 14.058068 14.058068 14.058068