condition	mean	min	max
4 h after light	8.692656666666666	8.125589999999999	8.98312
8 h after light	8.46444	8.06778	8.75855
12 h after light	8.863019999999999	8.40103	9.116489999999999
4 h after dark	9.22114	8.45156	9.6927
8 h after dark	8.940489999999999	8.30603	9.27235
12 h after dark	8.93507	8.25182	9.30587