condition	mean	min	max
4 h after light	8.142435	7.97192	8.31295
8 h after light	7.547364999999999	6.89942	8.19531
12 h after light	6.22491	5.9545	6.49532
4 h after dark	7.115399999999999	6.49311	7.73769
8 h after dark	5.40742	5.30557	5.50927
12 h after dark	6.984835	6.81059	7.15908