condition	mean	min	max
4 h after light	7.6030500000000005	7.5026600000000006	7.78985
8 h after light	7.132109999999999	6.860639999999999	7.4502
12 h after light	6.7007666666666665	6.46197	7.00813
4 h after dark	7.027186666666666	6.793989999999999	7.35087
8 h after dark	7.25115	7.085030000000001	7.475630000000001
12 h after dark	8.297403333333333	8.128110000000001	8.45214