condition	mean	min	max
4 h after light	8.294936666666667	8.22495	8.341389999999999
8 h after light	8.782833333333333	8.66993	8.865789999999999
12 h after light	8.35778	8.24536	8.46543
4 h after dark	8.379073333333334	8.32736	8.4307
8 h after dark	8.202486666666667	8.14831	8.309619999999999
12 h after dark	7.96833	7.91205	8.046