condition	mean	min	max
4 h after light	6.15014	5.827000000000001	6.60773
8 h after light	5.9930433333333335	5.64289	6.325880000000001
12 h after light	5.824846666666667	5.58364	6.239269999999999
4 h after dark	6.103733333333333	5.84287	6.50151
8 h after dark	5.95474	5.63746	6.274
12 h after dark	6.15669	5.86494	6.67968