condition	mean	min	max
4 h after light	7.28993	7.144819999999999	7.39076
8 h after light	7.1603666666666665	6.97182	7.36532
12 h after light	7.215489999999999	6.9870399999999995	7.38484
4 h after dark	7.284696666666667	6.9115	7.54173
8 h after dark	7.553733333333334	7.29013	7.74891
12 h after dark	7.452246666666667	7.371180000000001	7.582000000000001