condition	mean	min	max
4 h after light	7.3166	7.15032	7.466819999999999
8 h after light	7.524986666666667	7.06589	7.874630000000001
12 h after light	7.488363333333333	7.222580000000001	7.661989999999999
4 h after dark	7.70676	7.4177	7.961469999999999
8 h after dark	7.3776633333333335	7.022469999999999	7.71887
12 h after dark	6.931956666666666	6.84403	7.081739999999999