condition	mean	min	max
4 h after light	7.037129999999999	6.95644	7.15003
8 h after light	7.94262	7.8285	8.07826
12 h after light	7.989376666666667	7.94946	8.057089999999999
4 h after dark	7.72108	7.558269999999999	7.9153199999999995
8 h after dark	7.4714	7.38548	7.61105
12 h after dark	7.008383333333334	6.90538	7.112010000000001