condition	mean	min	max
4 h after light	8.948166	8.933253	8.963079
8 h after light	8.9526795	8.948263	8.957096
12 h after light	8.279205000000001	8.250177	8.308233
4 h after dark	8.864917	8.248569	9.481265
8 h after dark	8.831132499999999	8.799666	8.862599
12 h after dark	8.407407	8.407407	8.407407