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 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 2 h after dark 0.1974415 0.0 0.394883 4 h after dark 0.249387 0.0 0.498774 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0