condition	mean	min	max
4 h after light	6.70041	6.4319	6.93243
8 h after light	6.7400166666666665	6.514880000000001	6.9035899999999994
12 h after light	6.7381833333333345	6.689210000000001	6.827380000000001
4 h after dark	6.844103333333333	6.607480000000001	7.002439999999999
8 h after dark	6.87825	6.7740100000000005	7.02607
12 h after dark	6.966726666666666	6.86625	7.06772