condition mean min max 4 h after light 10.1276725 9.560424 10.694921 8 h after light 11.4296465 10.880757 11.978536 12 h after light 13.068473000000001 10.262239 15.874707 4 h after dark 10.744626 10.391312 11.09794 8 h after dark 9.643158 9.635041 9.651275 12 h after dark 14.821513 14.821513 14.821513