$ ntpq -pn remote refid st t when poll reach delay offset jitter ============================================================================== +210.173.160.27 133.243.236.20 2 u 733 1024 377 27.203 1.657 0.236 *210.173.160.57 133.243.236.19 2 u 734 1024 377 27.678 1.661 0.305 +210.173.160.87 133.243.236.20 2 u 769 1024 377 27.555 1.518 0.518