condition	mean	min	max
4 h after light	6.11665	6.01229	6.308269999999999
8 h after light	6.057066666666667	5.90466	6.20199
12 h after light	6.107356666666666	5.882709999999999	6.44682
4 h after dark	5.972493333333333	5.92114	6.02961
8 h after dark	6.14527	6.060230000000001	6.24852
12 h after dark	6.0919566666666665	5.8829400000000005	6.37413