condition	mean	min	max
4 h after light	18.51545	15.7388	21.2921
8 h after light	21.1871	18.0142	24.36
12 h after light	19.195615	9.68893	28.7023
4 h after dark	48.7597	39.0678	59.3438
8 h after dark	39.646766666666664	27.0429	61.5162
12 h after dark	29.572733333333332	14.0498	47.2932