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 0.011250075 0.0 0.0450003 3 h after dark 0.023129333333333335 0.0 0.069388 6 h after dark 0.0 0.0 0.0 9 h after dark 0.033491 0.0 0.100473 12 h after dark 0.0 0.0 0.0