condition mean min max 2 h after light 1.445157 0.967322 2.77478 6 h after light 1.223406 0.61605 1.97679 10 h after light 0.8417396666666667 0.569214 1.66636 14 h after light 1.1313698333333333 0.551424 1.81707 18 h after light 0.8625928333333334 0.404393 1.25009 2 h after dark 0.754735 0.406771 1.74638