condition	mean	min	max
4 h after light	7.4704975000000005	7.27227	7.668725
8 h after light	7.582168	7.414372	7.749964
12 h after light	7.4360325	7.20334	7.668725
4 h after dark	8.083518999999999	7.779712	8.387326
8 h after dark	7.6535340000000005	7.188453	8.118615
12 h after dark	7.085681	7.085681	7.085681