Specifically, one or few of the sattelites sent a wrong value &quot;A0&quot; in its &quot;Page 18 of subframe 4&quot; message. Page 37, §2.4.5.5 in <a href="http:&#x2F;&#x2F;www.gps.gov&#x2F;technical&#x2F;ps&#x2F;1995-SPS-signal-specification.pdf" rel="nofollow">http:&#x2F;&#x2F;www.gps.gov&#x2F;technical&#x2F;ps&#x2F;1995-SPS-signal-specificatio...</a><p><a href="https:&#x2F;&#x2F;www.febo.com&#x2F;pipermail&#x2F;time-nuts&#x2F;2016-January&#x2F;095692.html" rel="nofollow">https:&#x2F;&#x2F;www.febo.com&#x2F;pipermail&#x2F;time-nuts&#x2F;2016-January&#x2F;095692...</a>