condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 9 h after light 0.0 0.0 0.0 12 h after light 0.021249525 0.0 0.0849981 3 h after dark 0.0 0.0 0.0 6 h after dark 0.07587726666666667 0.0 0.13419 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0