condition	mean	min	max
4 h after light	9.315809999999999	9.21295	9.413969999999999
8 h after light	9.385299999999999	9.27086	9.5461
12 h after light	9.306783333333334	9.15681	9.3842
4 h after dark	9.108103333333334	9.001330000000001	9.29397
8 h after dark	9.26747	9.16858	9.35881
12 h after dark	9.267793333333334	9.22798	9.33464