condition mean min max 4 h after light 6.838005000000001 5.27756 8.39845 8 h after light 9.852 9.4392 10.2648 12 h after light 11.56305 11.2326 11.8935 4 h after dark 9.19115 8.73667 9.64563 8 h after dark 15.509699999999999 15.1916 15.8278 12 h after dark 9.085004999999999 8.58276 9.58725