condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0149937 0.0 0.0299874 4 h after dark 0.014109566666666665 0.0 0.0423287 8 h after dark 0.029276966666666664 0.0 0.0502189 12 h after dark 0.0 0.0 0.0