$ ntpq -pn remote refid st t when poll reach delay offset jitter ============================================================================== +210.173.160.27 133.243.236.19 2 u 482 1024 377 27.250 0.012 0.904 *210.173.160.57 133.243.236.18 2 u 371 1024 377 27.455 0.478 0.295 +210.173.160.87 133.243.236.20 2 u 425 1024 377 27.312 0.526 2.005