condition mean min max 0 h after light 0.341186 0.170821 0.511551 4 h after light 1.451515 1.38995 1.51308 8 h after light 1.3691049999999998 1.3496 1.38861 4 h after dark 1.259659 0.669878 1.84944 8 h after dark 1.0118749999999999 1.00763 1.01612 12 h after dark 1.59177 0.85144 2.3321