condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.0 0.0 0.0 8 h after light 0.2898995 0.28577 0.294029 4 h after dark 0.1418425 0.0 0.283685 8 h after dark 0.1422395 0.0 0.284479 12 h after dark 0.0 0.0 0.0