condition	mean	min	max
4 h after light	6.755483333333333	6.50275	7.1874
8 h after light	7.07092	6.751760000000001	7.437139999999999
12 h after light	6.8129566666666665	6.27528	7.342169999999999
4 h after dark	6.571540000000001	6.359030000000001	6.898960000000001
8 h after dark	6.5450333333333335	6.3087800000000005	6.9412199999999995
12 h after dark	6.111876666666666	5.74985	6.32073