condition	mean	min	max
4 h after light	7.1735299999999995	7.04347	7.35388
8 h after light	7.068826666666666	6.765610000000001	7.44555
12 h after light	6.89921	6.7474300000000005	7.13363
4 h after dark	7.35618	7.08355	7.80618
8 h after dark	7.43993	7.16034	7.77624
12 h after dark	7.2049666666666665	6.89681	7.58357