condition	mean	min	max
4 h after light	7.427113333333333	7.281789999999999	7.603210000000001
8 h after light	7.544046666666667	7.36382	7.7849699999999995
12 h after light	7.701160000000001	7.536160000000001	8.00871
4 h after dark	7.914303333333334	7.6696100000000005	8.3074
8 h after dark	8.07335	7.8893	8.31697
12 h after dark	8.29753	8.0269	8.467310000000001