condition mean min max 0 h after light 15.6051 13.9644 17.2458 4 h after light 10.9999 10.6815 11.3183 8 h after light 10.3307 10.3115 10.3499 4 h after dark 18.551650000000002 18.0041 19.0992 8 h after dark 18.325000000000003 17.7358 18.9142 12 h after dark 17.033 16.4843 17.5817