condition mean min max 0 h after light 20.0009 15.7239 24.2779 2 h after light 15.76075 15.7037 15.8178 4 h after light 14.97925 14.4704 15.4881 8 h after light 9.761355 8.19381 11.3289 12 h after light 12.46875 11.9288 13.0087 2 h after dark 9.02681 7.12742 10.9262 4 h after dark 13.54115 11.8776 15.2047 8 h after dark 18.439799999999998 17.7335 19.1461 12 h after dark 20.0163 19.2996 20.733