condition	mean	min	max
4 h after light	8.684753333333333	8.47125	8.89199
8 h after light	9.136943333333333	8.76783	9.380989999999999
12 h after light	9.02149	8.79734	9.17876
4 h after dark	8.719356666666666	8.4697	8.87016
8 h after dark	8.50614	8.35897	8.62458
12 h after dark	8.618093333333332	8.50515	8.797369999999999