condition	mean	min	max
4 h after light	14.25555	12.2147	16.2964
8 h after light	17.661	15.9282	19.3938
12 h after light	19.86375	18.9301	20.7974
4 h after dark	16.718400000000003	14.9121	18.7892
8 h after dark	18.680466666666668	17.3248	19.4063
12 h after dark	15.2982	14.3027	16.0519