Labo PFS PfsCode FreqRef MJD1 MJD2 [Ref-PFS] uA uB uA/Lab uB/Lab Uptime Ref(uB) uB(Ref) 10E-15 10E-15 10E-15 10E-15 10E-15 % 10E-15 xxxx xxxxxxxxxx xxxxxxx xxxxxxx xxxxx xxxxx xxxxxxxxxxxx xxxxxx xxxxxx xxxxxx xxxxxx xxxxxx xxxxxx xxxxxx PTB PTB-CSF1 1920501 1400509 61279 61309 -57.25 0.27 0.15 0.01 0.00 97.5 T371 0.27 PTB PTB-CSF2 1920502 1400509 61279 61309 -57.05 0.11 0.17 0.01 0.00 96.3 T370 0.17 ADDITIONAL INFORMATION Reported by : PTB Date of report : 29 09 2026 Name of the reporter : Stefan Weyers END Comments from the reporter: Other information: