condition mean min max 0 h after light 0.0 0.0 0.0 2 h after light 0.0 0.0 0.0 4 h after light 1.42412 0.0 2.84824 8 h after light 2.091235 0.0 4.18247 12 h after light 0.0 0.0 0.0 2 h after dark 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 4.688655 2.20479 7.17252 12 h after dark 0.0 0.0 0.0