condition	mean	min	max
4 h after light	6.04406	5.9667699999999995	6.11108
8 h after light	6.1799566666666665	5.99073	6.374219999999999
12 h after light	6.14551	6.03713	6.31495
4 h after dark	5.952323333333334	5.844930000000001	6.14369
8 h after dark	5.777753333333333	5.46375	6.0254199999999996
12 h after dark	5.589566666666666	5.3335	5.77585