condition	mean	min	max
4 h after light	40.8362	39.1476	42.5248
8 h after light	16.3656	16.176	16.5552
12 h after light	6.758785	6.71117	6.8064
4 h after dark	10.36204	8.66216	12.9703
8 h after dark	10.955566666666666	10.828	11.0941
12 h after dark	21.631366666666665	20.7149	22.2931