condition	mean	min	max
4 h after light	7.84085	7.752089999999999	7.889069999999999
8 h after light	7.903009999999999	7.875889999999999	7.95565
12 h after light	7.81403	7.71483	7.891710000000001
4 h after dark	8.021476666666667	7.98574	8.05206
8 h after dark	7.918706666666666	7.82355	8.03835
12 h after dark	7.969296666666667	7.7416100000000005	8.17533