condition mean min max 4 h after light 8.49705 7.04338 9.95072 8 h after light 16.89855 16.6728 17.1243 12 h after light 24.32575 23.0474 25.6041 4 h after dark 25.0138 23.8019 25.6681 8 h after dark 12.552366666666666 11.1006 14.6145 12 h after dark 9.29507 8.99965 9.57366