$ ntpq -pn remote refid st t when poll reach delay offset jitter ============================================================================== +210.173.160.27 133.243.236.20 2 u 640 1024 377 27.499 0.349 0.140 *210.173.160.57 133.243.236.19 2 u 587 1024 377 27.134 0.982 0.442 +210.173.160.87 133.243.236.19 2 u 616 1024 377 26.876 1.129 0.008