<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class="">Dear GFZ AC colleagues,</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><br class=""></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class="">During the IGS Final combination for wk1864, the orbit combination was completed but the clock combination was failed with somewhat bogus message as below.</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><br class=""></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class="">BRDC-ALIGNMENT</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class="">--------------</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; min-height: 13px;" class=""><br class=""></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""> CEN | OFFSET DRIFT CLKRMS</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""> | (ns) (ns/d) (ns) </div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""> ----+-------------------------------</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""> cod | -0.819 -0.206 3.277</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""> emr | 4.147 0.135 3.267</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""> esa | -0.718 -0.058 3.223</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""> gfz | -10.060 30.044 3.321</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""> grg | 0.419 -0.533 3.285</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""> mit | 3.073 0.605 3.367</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; min-height: 13px;" class=""><br class=""></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; min-height: 13px;" class=""><br class=""></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; min-height: 13px;" class=""><br class=""></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""> *** PG CCLOCK: MAXEPO EXCEEDED </div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""> FILE : COMBINED</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""> EXPECTED MAX: 2880 </div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""> DETECTED MAX: 2881 </div><div class=""><br class=""></div><div class="">It was really puzzling so I had to spend a good amount of hours to track it down. I still don’t know the exact spot but it must come from gfz clock file. The BRDC-ALIGNMENT for the day 5 (below) was very small for gfz but for day 6 (above) the numbers are quite big. </div><div class=""><br class=""></div><div class=""><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><br class=""></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class="">BRDC-ALIGNMENT</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class="">--------------</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; min-height: 13px;" class=""><br class=""></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""> CEN | OFFSET DRIFT CLKRMS</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""> | (ns) (ns/d) (ns)</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""> ----+-------------------------------</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""> cod | -0.760 -0.327 3.279</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""> emr | 3.149 1.001 3.277</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""> esa | -0.279 1.503 3.240</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""> gfz | 0.084 -0.019 3.302</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""> grg | 0.223 0.069 3.324</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""> mit | 1.237 1.704 3.367</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; min-height: 13px;" class=""><br class=""></div></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; min-height: 13px;" class=""><br class=""></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; min-height: 13px;" class="">When I exclude gfz clocks, the clock combination finished without any issue. If you can track it down and provide the new clock file with identical station coordinates (SINEX submission), I can use your new clock file, but if the station coordinate has to be changed, then we need to discuss how to handle this case.</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; min-height: 13px;" class=""><br class=""></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; min-height: 13px;" class="">It would be great if you can reply me with your plan since we can’t delay the Final product too long.</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; min-height: 13px;" class=""><br class=""></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; min-height: 13px;" class="">Thanks,</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; min-height: 13px;" class=""><br class=""></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; min-height: 13px;" class="">Kevin</div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; min-height: 13px;" class=""><br class=""></div></body></html>