condition mean min max 3 h after light 13.656633333333334 12.7554 15.4232 6 h after light 11.3307 10.3656 12.9291 9 h after light 12.126133333333334 11.6808 12.8821 12 h after light 19.3292 16.8854 20.899 3 h after dark 31.0624 30.1045 32.794 6 h after dark 31.8523 31.7754 31.9131 9 h after dark 26.615933333333334 24.403 28.8973 12 h after dark 22.1173 21.0431 24.1807