condition	mean	min	max
4 h after light	8.38142	7.98878	8.6722
8 h after light	8.563273333333333	8.31069	8.8007
12 h after light	8.54334	8.36941	8.68087
4 h after dark	8.87059	8.6315	9.01155
8 h after dark	9.0483	8.900139999999999	9.2132
12 h after dark	9.34754	9.20572	9.47759