condition mean min max 4 h after light 147.263656 147.176525 147.350787 8 h after light 168.343816 161.487727 175.199905 12 h after light 218.9195685 187.445452 250.393685 4 h after dark 300.446689 262.025721 338.867657 8 h after dark 326.64915699999995 319.077977 334.220337 12 h after dark 322.238917 322.238917 322.238917