condition	mean	min	max
0 h after light	2.272105	2.27008	2.27413
4 h after light	1.630155	1.57112	1.68919
8 h after light	1.83745	1.09	2.5849
4 h after dark	1.60242	1.21992	1.98492
8 h after dark	2.161155	1.98264	2.33967
12 h after dark	2.07404	1.9666	2.18148