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 0.1224105 0.0 0.244821 4 h after dark 0.060999 0.0 0.121998 8 h after dark 0.0614425 0.0 0.122885 12 h after dark 0.0 0.0 0.0