condition mean min max 0 h after light 6.27555 6.15586 6.39524 4 h after light 6.511794999999999 6.50467 6.51892 8 h after light 9.720189999999999 9.51548 9.9249 4 h after dark 6.27772 4.04648 8.50896 8 h after dark 5.859970000000001 5.20809 6.51185 12 h after dark 5.632695 5.34549 5.9199