Now running htpdate 1.0.4:
htpdate -Dx www.xs4all.nl www.nikhef.nl www.sara.nl dl.xs4all.nl

Note: Network bandwidth of this server is shared, so htpdate and ntpdate measurements may get distorted from time to time. Also various experiments (with adjtimex) are performed.
Note: X-axis are in local time (CEST => GMT+1+daylight savings)

realtime graphs