condition	mean	min	max
4 h after light	17.488950000000003	17.0865	17.8914
8 h after light	11.6232	11.3235	11.9229
12 h after light	14.9448	14.1376	15.752
4 h after dark	15.68445	15.1207	16.2482
8 h after dark	17.56205	16.8385	18.2856
12 h after dark	18.38465	17.8002	18.9691