condition mean min max 4 h after light 9.008410000000001 8.18091 9.83591 8 h after light 14.28735 14.1767 14.398 12 h after light 2.46485 2.38558 2.54412 4 h after dark 2.6875733333333334 2.45096 2.91839 8 h after dark 3.7824733333333334 3.06288 4.89344 12 h after dark 5.3037399999999995 4.15117 6.55431