condition mean min max 0 h after light 15.28745 14.0708 16.5041 2 h after light 6.754105 2.35781 11.1504 4 h after light 15.1356 11.9497 18.3215 8 h after light 11.5713 6.2897 16.8529 12 h after light 14.896055 6.53871 23.2534 2 h after dark 14.52595 11.8916 17.1603 4 h after dark 9.07817 1.81664 16.3397 8 h after dark 32.35465 19.6058 45.1035 12 h after dark 23.167525 5.15605 41.179