condition	mean	min	max
4 h after light	7.784680000000001	7.61476	7.9397
8 h after light	7.915853333333333	7.78118	8.05374
12 h after light	8.20624	8.13844	8.25394
4 h after dark	8.833599999999999	8.65241	9.05919
8 h after dark	8.954356666666666	8.627239999999999	9.22715
12 h after dark	9.39517	9.25567	9.58809