condition	mean	min	max
4 h after light	8.92504	7.79908	10.051
8 h after light	5.5779250000000005	5.38192	5.77393
12 h after light	6.63042	6.61899	6.64185
4 h after dark	13.99535	13.8534	14.1373
8 h after dark	15.93535	15.4956	16.3751
12 h after dark	12.752500000000001	12.5943	12.9107