condition	mean	min	max
4 h after light	11.692005	8.98401	14.4
8 h after light	7.448115	5.79338	9.10285
12 h after light	11.94405	11.7842	12.1039
4 h after dark	16.7382	14.1688	19.101
8 h after dark	19.359133333333332	18.3366	20.7234
12 h after dark	14.358366666666667	12.2473	16.5177