condition	mean	min	max
4 h after light	7.0237099999999995	6.988739999999999	7.05014
8 h after light	6.953193333333333	6.82286	7.12927
12 h after light	7.045753333333334	6.8829899999999995	7.14411
4 h after dark	7.27355	7.01883	7.53095
8 h after dark	7.30342	6.86205	7.6996199999999995
12 h after dark	7.533386666666666	7.4656	7.619389999999999