condition	mean	min	max
4 h after light	7.319193333333334	7.250210000000001	7.413819999999999
8 h after light	7.43837	7.4332	7.44785
12 h after light	7.6058900000000005	7.4196800000000005	7.720860000000001
4 h after dark	7.911413333333333	7.77398	8.05471
8 h after dark	7.949706666666667	7.9032	8.00619
12 h after dark	7.838353333333333	7.7237100000000005	8.01521