condition	mean	min	max
4 h after light	7.17122	6.7469	7.40389
8 h after light	7.2645599999999995	7.040719999999999	7.40658
12 h after light	7.321133333333333	6.92605	7.5544199999999995
4 h after dark	7.43683	7.191560000000001	7.622539999999999
8 h after dark	7.300543333333334	6.99555	7.5133600000000005
12 h after dark	7.362093333333333	7.06135	7.5251399999999995