condition mean min max 4 h after light 7.693944999999999 7.25527 8.13262 8 h after light 7.163335 6.53351 7.79316 12 h after light 8.07183 7.80638 8.33728 4 h after dark 9.926996666666668 8.64812 11.8862 8 h after dark 10.01056 7.65612 12.6519 12 h after dark 11.767846666666667 9.48994 15.544