condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.099457 0.0 0.198914 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.14167933333333335 0.0 0.425038 12 h after dark 0.0 0.0 0.0