condition	mean	min	max
4 h after light	7.6745133333333335	7.596989999999999	7.804180000000001
8 h after light	7.90218	7.820060000000001	7.99195
12 h after light	7.706853333333333	7.521489999999999	7.7995600000000005
4 h after dark	7.81515	7.645389999999999	8.00796
8 h after dark	7.819186666666667	7.65481	8.128860000000001
12 h after dark	7.939503333333333	7.81998	8.13149