condition	mean	min	max
4 h after light	6.38422	6.33315	6.43377
8 h after light	6.443293333333333	6.35002	6.49052
12 h after light	6.34342	6.33748	6.3476099999999995
4 h after dark	6.57922	6.52495	6.66972
8 h after dark	6.45263	6.24346	6.595510000000001
12 h after dark	6.568723333333334	6.48001	6.72612