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 0.0 0.0 0.0 4 h after dark 1.166995 0.0 2.33399 8 h after dark 0.0 0.0 0.0 12 h after dark 0.969495 0.0 1.93899