condition	mean	min	max
4 h after light	6.73146	6.42097	6.93106
8 h after light	6.88061	6.66035	7.09553
12 h after light	6.96664	6.890639999999999	7.07503
4 h after dark	7.063446666666667	6.917999999999999	7.21294
8 h after dark	6.91296	6.787910000000001	7.14332
12 h after dark	6.815746666666667	6.45735	7.05819