condition mean min max 4 h after light 8.964158000000001 8.783313 9.145003 8 h after light 9.876902999999999 9.778001 9.975805 12 h after light 8.181352500000001 7.852768 8.509937 4 h after dark 8.28296 8.061106 8.504814 8 h after dark 10.387193499999999 9.644663 11.129724 12 h after dark 11.311203 11.311203 11.311203