condition mean min max 4 h after light 10.743322500000001 10.412174 11.074471 8 h after light 10.614627500000001 10.154784 11.074471 12 h after light 10.646313 10.218155 11.074471 4 h after dark 11.528349 11.278206 11.778492 8 h after dark 14.679347499999999 12.692171 16.666524 12 h after dark 8.929523 8.929523 8.929523