condition	mean	min	max
4 h after light	17.950165	17.075485	18.824845
8 h after light	18.4494445	16.449591	20.449298
12 h after light	15.739614	15.299858	16.17937
4 h after dark	15.550367	14.682821	16.417913
8 h after dark	15.454363	13.973379	16.935347
12 h after dark	17.24701	17.24701	17.24701