condition	mean	min	max
4 h after light	6.496113333333333	6.390619999999999	6.647539999999999
8 h after light	6.2438633333333335	6.04914	6.50189
12 h after light	6.304553333333334	6.09225	6.5838600000000005
4 h after dark	6.740573333333333	6.6169	6.969869999999999
8 h after dark	6.67733	6.49399	6.81463
12 h after dark	7.26589	7.19095	7.3745899999999995