condition	mean	min	max
4 h after light	6.753360000000001	6.40481	7.10191
8 h after light	5.175045	4.89759	5.4525
12 h after light	4.64947	4.41657	4.88237
4 h after dark	5.04793	4.48525	5.61061
8 h after dark	6.079655	5.98787	6.17144
12 h after dark	7.14192	6.68197	7.60187