condition	mean	min	max
4 h after light	6.94325	6.73527	7.125660000000001
8 h after light	6.614186666666666	6.37282	6.748069999999999
12 h after light	6.80062	6.65618	6.98265
4 h after dark	6.8999299999999995	6.5048699999999995	7.1443
8 h after dark	7.037943333333334	6.961010000000001	7.1386899999999995
12 h after dark	7.22602	7.143839999999999	7.34006