condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.0421186 0.0 0.0842372 8 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0