condition mean min max 0 h after light 1.1798725 0.787515 1.57223 4 h after light 0.88491 0.80099 0.96883 8 h after light 0.2000535 0.0 0.400107 4 h after dark 0.096889 0.0 0.193778 8 h after dark 0.872632 0.390374 1.35489 12 h after dark 1.941265 1.91989 1.96264