condition	mean	min	max
4 h after light	13.35805	11.8572	14.8589
8 h after light	16.37365	15.4218	17.3255
12 h after light	17.15815	16.175	18.1413
4 h after dark	17.2304	16.8921	17.5687
8 h after dark	16.45345	16.0734	16.8335
12 h after dark	17.41285	16.8699	17.9558