condition mean min max 0 h after light 12.90645 12.6156 13.1973 4 h after light 20.050600000000003 18.3514 21.7498 8 h after light 22.0606 21.8263 22.2949 4 h after dark 19.62825 17.2575 21.999 8 h after dark 19.02575 17.3254 20.7261 12 h after dark 11.69755 10.1943 13.2008