CIRCULAR T 374 ISSN 1143-1393
2019 MARCH 08, 10h UTC
BUREAU INTERNATIONAL DES POIDS ET MESURES
THE INTERGOVERNMENTAL ORGANIZATION ESTABLISHED BY THE METRE CONVENTION
PAVILLON DE BRETEUIL F-92312 SEVRES CEDEX TEL. +33 1 45 07 70 70 tai@bipm.org

The contents of the sections of BIPM Circular T are fully described in the document " Explanatory supplement to BIPM Circular T "
available at https://webtai.bipm.org/ftp/pub/tai/other-products/notes/explanatory_supplement_v0.2.pdf

1 - Difference between UTC and its local realizations UTC(k) and corresponding uncertainties. From 2017 January 1, 0h UTC, TAI-UTC = 37 s.
Date 2019 0h UTC JAN 31 FEB 5 FEB 10 FEB 15 FEB 20 FEB 25 Uncertainty/ns Notes
MJD 58514 58519 58524 58529 58534 58539 uA uB u
Laboratory k [UTC-UTC(k)]/ns
AOS (Borowiec) 2.5 2.1 1.7 0.7 0.0 -1.3 0.4 4.2 4.2
APL (Laurel) 4.5 2.6 2.3 -3.1 -3.8 -29.9 0.4 10.9 11.0
AUS (Sydney) -50.3 -39.1 -46.7 -48.6 -62.7 -77.9 0.4 6.5 6.5
BEV (Wien) 12.9 5.1 13.0 11.0 14.0 27.7 0.4 3.3 3.3
BIM (Sofiya) - - - - - -
BIRM (Beijing) -2.6 -8.6 -10.6 -8.1 -4.5 -1.9 0.5 3.2 3.3
BOM (Skopje) -1511.1 -1551.3 -1584.0 -1612.8 -1635.0 -1672.8 1.5 8.3 8.4
BY (Minsk) - -0.5 -1.5 -2.2 -2.2 -1.5 1.5 12.3 12.3
CAO (Cagliari) -9486.6 -9592.2 -9694.7 -9789.3 -9889.9 -9989.6 1.5 20.0 20.1
CH (Bern-Wabern) -4.6 -7.4 -8.0 -6.7 -5.7 -6.4 0.4 2.2 2.2
CNES (Toulouse) 7.2 7.0 7.3 8.2 10.1 12.3 0.4 4.6 4.7
CNM (Queretaro) 1.2 -4.7 -2.9 4.6 0.8 -0.9 2.5 11.2 11.5
CNMP (Panama) 4.4 2.6 -0.8 -4.1 -9.5 -18.8 0.7 7.4 7.4
DFNT (Tunis) 2983.7 3175.4 3370.7 3560.0 3755.2 3966.8 0.7 20.0 20.0
DLR (Oberpfaffenhofen) 15.9 -24.9 -65.0 -49.8 -29.4 -20.5 0.7 3.4 3.5
DMDM (Belgrade) -6.8 -8.3 -15.7 -7.9 4.3 -2.8 0.4 3.3 3.3
DTAG (Frankfurt/M) -210.1 -206.6 -209.0 -212.1 -211.3 -212.4 0.4 3.0 3.1
EIM (Thessaloniki) 2.0 1.2 -2.9 1.4 6.6 -0.1 3.0 11.3 11.7
ESTC (Noordwijk) -1.5 -4.3 -6.4 -6.4 -3.0 -0.4 0.4 3.2 3.2
HKO (Hong Kong) 881.5 894.7 926.6 944.7 957.5 980.4 0.4 7.9 7.9
ICE (San Jose) 85.3 86.3 87.8 81.9 72.2 79.5 5.0 20.0 20.6
IFAG (Wettzell) -998.1 -1009.8 -1023.6 -1027.0 -1027.7 -1020.0 0.4 5.2 5.2
IGNA (Buenos Aires) 6.3 - - - - - 2.5 20.0 20.2
IMBH (Sarajevo) 1.7 0.2 1.0 -1.7 -1.7 2.0 0.7 7.3 7.3
INCP (Lima) -154.4 -165.3 - - - - 5.0 20.0 20.6
INM (Bogota D.C.) 28.8 31.4 33.8 33.5 26.7 29.5 2.0 20.0 20.1
INPL (Jerusalem) - -112.3 -140.3 -153.0 -152.1 -148.2 0.4 7.3 7.3
INTI (Buenos Aires) -78.3 -86.9 -77.9 -89.1 -89.3 -85.1 2.5 20.0 20.2
INXE (Rio de Janeiro) -61.9 -22.1 -16.7 - -5.4 0.7 0.4 20.0 20.0
IPQ (Caparica) 110.9 107.5 118.2 127.4 130.1 - 0.5 20.0 20.0
IT (Torino) 0.2 0.1 -0.8 -2.0 -3.0 -2.0 0.4 1.7 1.8
JATC (Lintong) -1.7 -1.7 -3.1 -0.6 2.4 1.1 0.7 2.7 2.8
JV (Kjeller) 26.9 28.2 36.0 35.2 44.4 55.1 0.4 4.3 4.3
KEBS (Nairobi) - - - - - -
KIM (Serpong-Tangerang) - 1013.3 1019.8 1035.8 1034.1 1067.9 2.0 20.0 20.1
KRIS (Daejeon) 10.5 6.7 3.8 4.2 4.4 4.9 0.4 3.2 3.2
KZ (Astana) - - - - - -
LRTE (Sao Carlos) -35.2 -26.6 -18.9 -21.3 -26.8 -28.9 0.4 20.0 20.0
LT (Vilnius) 584.9 567.5 582.0 590.3 614.3 603.9 0.7 2.8 2.9
LUX (Belvaux) 2.3 -1.1 -4.7 -7.4 -11.8 - 0.4 2.8 2.9
MASM (Bayanzurkh) -174.8 -236.1 -297.7 -52.1 -108.3 -190.4 0.7 20.0 20.0
MBM (Podgorica) - - - - - -
MIKE (Espoo) -3.4 -3.5 -3.7 -3.9 -3.8 -3.7 0.4 4.6 4.6
MKEH (Budapest) -6781.3 -7001.4 -7229.3 -7434.0 -7652.2 -7875.5 1.5 20.0 20.1
MSL (Lower Hutt) 372.6 356.3 389.7 379.4 390.7 416.3 1.5 20.0 20.1
MTC (Makkah) - - - - - -
NAO (Mizusawa) -399.8 -410.6 -421.0 -429.2 -434.5 -447.0 2.0 19.9 20.1
NICT (Tokyo) 1.8 1.5 2.1 2.2 1.8 -0.5 0.3 1.9 1.9
NIM (Beijing) -1.6 -2.3 -1.7 -2.5 -5.2 -4.9 0.3 1.8 1.8
NIMB (Bucharest) 4678.5 4726.3 4780.5 4829.7 4878.8 4931.0 0.5 7.5 7.5
NIMT (Pathumthani) -173.2 -169.4 -169.4 -168.9 -168.1 -157.1 1.5 3.9 4.2
NIS (Cairo) 23.0 - 10.1 6.5 -2.9 -1.1 1.6 20.0 20.1
NIST (Boulder) -1.6 -3.3 -4.6 -5.3 -3.7 -2.4 0.4 2.1 2.2
NMIJ (Tsukuba) 3.3 2.2 0.9 0.6 0.1 -0.1 0.4 3.4 3.4
NMLS (Sepang) -3124.4 -3156.8 -3195.4 -3225.9 - - 1.5 3.9 4.2
NPL (Teddington) -2.5 -2.7 -2.8 -3.2 -3.2 -2.8 0.5 3.4 3.4
NPLI (New-Delhi) 13.0 9.9 8.9 9.4 9.4 10.6 0.4 2.8 2.9
NRC (Ottawa) -21.4 -27.0 -28.6 -18.9 -25.1 -21.1 0.4 2.9 3.0
NRL (Washington DC) 4.1 -1.2 1.2 9.8 7.0 5.3 0.4 20.0 20.0
NTSC (Lintong) -1.2 -1.6 -2.7 -1.3 0.6 -1.2 0.3 2.6 2.6
ONBA (Buenos Aires) -2103.6 -2089.9 -2092.9 -2097.6 - -323.3 2.0 11.3 11.4
ONRJ (Rio de Janeiro) 18.3 6.1 8.6 3.6 1.4 0.8 6.5 20.0 21.0
OP (Paris) 0.0 0.2 0.1 0.9 0.9 0.7 0.4 1.7 1.7
ORB (Bruxelles) 1.7 0.7 0.8 1.0 1.8 2.8 0.4 3.2 3.2
PL (Warszawa) 8.3 8.3 7.5 6.2 4.5 2.4 0.7 3.2 3.3
PTB (Braunschweig) 0.6 0.1 0.2 0.2 0.5 0.5 0.2 1.2 1.2
ROA (San Fernando) -3.7 -3.8 -3.9 -2.9 -2.9 -2.8 0.4 1.9 1.9
SASO (Riyadh) -158.0 -169.8 -179.9 -200.1 -211.0 -218.7 0.5 3.2 3.3
SCL (Hong Kong) -183.1 -199.0 -204.0 -196.2 -220.1 -172.6 1.0 20.0 20.1
SG (Singapore) 18.3 17.8 15.2 14.9 14.2 13.4 0.4 6.7 6.7
SIQ (Ljubljana) 338.2 296.7 285.0 301.8 313.7 310.4 0.4 7.6 7.6
SL (Colombo) -12.4 -13.8 -18.9 -11.7 -14.3 -10.4 0.7 20.0 20.0
SMD (Bruxelles) -13.0 -5.8 -4.1 -11.8 -14.6 -7.2 0.4 3.2 3.2
SMU (Bratislava) -1106.4 -1053.0 -1009.3 -964.7 -913.2 -865.4 1.5 12.3 12.3
SP (Boras) 0.2 -1.3 -2.3 -2.2 -2.1 -1.8 0.3 1.7 1.7
SU (Moskva) -2.3 -2.2 -2.5 -2.2 -1.9 -1.3 1.3 7.2 7.3
TL (Chung-Li) -0.8 -1.2 -2.2 -3.4 -4.2 -4.6 0.4 1.9 2.0
TP (Praha) 15.1 3.8 -3.8 -1.5 -1.7 1.9 0.4 6.8 6.8
UA (Kharkov) 6.7 2.9 3.0 2.5 -2.4 0.1 1.5 9.2 9.3
UAE (Abu Dhabi) - - - - - 11.7 4.0 8.6 9.5
UME (Gebze-Kocaeli) -143.9 -109.9 -78.1 -64.9 -67.3 -63.7 0.7 3.4 3.5
USNO (Washington DC) -1.4 -0.7 -0.5 -0.3 0.4 0.0 0.3 1.5 1.5
VMI (Ha Noi) -21.1 -15.0 -6.5 -9.7 -10.6 -6.4 2.0 3.9 4.4
VSL (Delft) -6.5 -2.8 0.3 -2.1 -1.5 -4.8 0.4 1.8 1.9
ZA (Pretoria) 9.5 -2.0 -12.7 -5.6 3.3 -3.1 0.4 3.2 3.2

2 - Difference between the normalized frequencies of EAL and TAI.
Interval of validity f(EAL)-f(TAI)
Steering correction 58514 - 58539 6.501x10-13 (2019 JAN 31 - 2019 FEB 25)
New correction 58539 - 58569 6.499x10-13 (2019 FEB 25 - 2019 MAR 27)
New correction foreseen 58569 - 58599 6.499x10-13 (2019 MAR 27 - 2019 APR 26)

3 - Duration of the TAI scale interval d.

Table 1: Estimate of d by individual PSFS measurements and corresponding uncertainties.
All values are expressed in 10-15 and are valid only for the stated period of estimation.
Standard Period of d uA uB ul/lab ul/Tai u uSrep Ref(uS) Ref(uB) uB(Ref) Steer Note
Estimation
PTB-CS1 58514 58539 -10.35 8.00 8.00 0.00 0.15 11.31 PFS/NA T148 8. Y (1)
PTB-CS2 58514 58539 5.90 5.00 12.00 0.00 0.15 13.00 PFS/NA T148 12. Y (1)
NICT-Sr1 58514 58534 1.21 0.02 0.07 0.22 0.28 0.37 0.4 [1] T371 0.06 Y (2)
NIST-Yb1 58054 58084 -0.21 0.01 0.03 0.29 0.26 0.39 0.5 [1] [2] 0.01 Y (3)
NIST-Yb1 58084 58114 0.20 0.01 0.03 0.35 0.26 0.44 0.5 [1] [2] 0.01 Y (3)
NIST-Yb1 58114 58149 -0.43 0.01 0.03 0.26 0.23 0.35 0.5 [1] [2] 0.01 Y (3)
NIST-Yb1 58149 58174 0.67 0.01 0.03 0.32 0.31 0.45 0.5 [1] [2] 0.01 Y (3)
NIST-Yb1 58174 58204 0.27 0.01 0.03 0.26 0.26 0.37 0.5 [1] [2] 0.01 Y (3)
NIST-Yb1 58204 58234 0.48 0.01 0.03 0.48 0.26 0.55 0.5 [1] [2] 0.01 Y (3)
NIST-Yb1 58234 58269 0.01 0.01 0.03 0.48 0.23 0.53 0.5 [1] [2] 0.01 Y (3)
NIST-Yb1 58269 58299 0.77 0.01 0.03 0.22 0.26 0.34 0.5 [1] [2] 0.01 Y (3)
SYRTE-FO1 58514 58539 0.16 0.25 0.32 0.06 0.31 0.51 PFS/NA T301 0.37 Y (4)
SYRTE-FO2 58514 58539 0.38 0.30 0.22 0.06 0.31 0.49 PFS/NA T301 0.23 Y (4)
SYRTE-FOM 58514 58539 0.36 0.25 0.65 0.05 0.31 0.76 PFS/NA T372 0.70 Y (4)
SYRTE-FORb 58514 58539 0.53 0.25 0.26 0.06 0.31 0.48 0.6 [1] T328 0.34 Y (4)
PTB-CSF1 58514 58539 0.66 0.08 0.30 0.05 0.15 0.35 PFS/NA T371 0.28 Y (5)
PTB-CSF2 58514 58539 0.49 0.17 0.18 0.06 0.15 0.30 PFS/NA T370 0.17 Y (5)

Notes:
(1) Continuously operating as a clock participating to TAI
(2) Report 01 MAR. 2019 by NICT
(3) Report 21 DEC. 2018 by NIST
(4) Report 28 FEB. 2019 by LNE-SYRTE
(5) Report 01 MAR. 2019 by PTB
[1] CCTF Recommendation 2 (2017) : Updates to the CIPM list of standard frequencies in Consultative
Committee for Time and Frequency Report of the 21st meeting (2017), 2017, 56 p.
[2] Atomic clock performance enabling geodesy below the centimetre level, McGrew W.F., Zhang X., Fasano R.J. et al
Nature 564, pp87-93, 2018.

Table 2: Estimate of d by the BIPM based on all PSFS measurements identified to be used for TAI steering
over the period MJD58154-58539, and corresponding uncertainties.

Period of estimation d u
58514-58539 0.54x10-15 0.16x10-15 (2019 JAN 31 - 2019 FEB 25)

4 - Relations of UTC and TAI with predictions of UTC(k) disseminated by GNSS.

[UTC-UTC(USNO)_GPS] = C0', [TAI-UTC(USNO)_GPS] = 37 s + C0'
[UTC-UTC(SU)_GLONASS]= C1', [TAI-UTC(SU)_GLONASS]= 37 s + C1'

For this edition of Circular T, σ0'= 0.8 ns, σ1'= 6.6 ns

2019 0h UTC MJD C0'/ns N0 C1'/ns N1'
JAN 31 58514 -4.1 84 8.0 87
FEB 1 58515 -5.7 88 7.9 87
FEB 2 58516 -3.9 89 7.1 84
FEB 3 58517 -2.1 89 8.6 86
FEB 4 58518 -3.2 89 8.7 88
FEB 5 58519 -4.0 90 7.7 89
FEB 6 58520 -3.1 89 8.2 85
FEB 7 58521 -1.7 89 8.7 89
FEB 8 58522 -4.1 89 8.4 89
FEB 9 58523 -4.7 90 8.3 90
FEB 10 58524 -4.6 89 7.7 82
FEB 11 58525 -4.1 89 7.6 88
FEB 12 58526 -2.7 89 8.6 88
FEB 13 58527 -3.8 90 8.8 90
FEB 14 58528 -5.6 89 6.9 85
FEB 15 58529 -2.9 74 7.1 85
FEB 16 58530 -1.5 89 9.0 89
FEB 17 58531 -2.7 90 8.7 86
FEB 18 58532 -1.9 89 9.4 80
FEB 19 58533 -2.5 89 10.7 85
FEB 20 58534 -3.0 89 9.9 89
FEB 21 58535 0.2 90 8.8 87
FEB 22 58536 -1.1 88 9.4 85
FEB 23 58537 -2.4 89 10.8 87
FEB 24 58538 -1.1 89 11.6 87
FEB 25 58539 -1.5 90 10.4 81

5 - Time links used for the computation of TAI, calibrations information and corresponding uncertainties.

Link Type tb/ns uCal/ns Equip m ent C al_ID1/C al_ID2 uC/ns Al/ns Y YMM
AOS /PTB GPSPPP AO_4 /PT02 NA_Al / 1001-2016 0.3 4.0 3.1 -5.3 1808
APL /PTB GPSPPP AP02 /PT02 NA_Al / 1001-2016 0.3 11.2 10.0
AUS /PTB GPSPPP AU01 /PT02 1002-2010 / 1001-2016 0.3 6.4 4.0
BEV /PTB GPSPPP BE1_ /PT02 1012-2016 / 1001-2016 0.3 3.1 1.8
BIM /PTB NL
BIRM/PTB GPSPPP BI01 /PT02 1015-2016 / 1001-2016 0.4 3.0 1.7
BOM /PTB GPS MC MABM /PT10 2004-2014 / 1001-2016 1.5 8.2 4.3
BY /PTB GPS MC BY46 /PT10 NA / 1001-2016 1.5 12.2 10.0
CAO /PTB GPS MC CA__ /PT10 NC / 1001-2016 1.5 20.0
CNES/PTB GPSPPP CS21 /PT02 1101-2016 / 1001-2016 0.3 4.5 1.9
CNM /PTB GPS MC CN00 /PT10 NA_Al / 1001-2016 2.5 11.2 10.0 -27.3 0804
CNMP/PTB GPS P3 MP1_ /PT02 NA_Al / 1001-2016 0.7 7.3 2.2 41.7 1807
DFNT/PTB GPS P3 DN__ /PT02 NC_Al / 1001-2016 0.7 20.0 10.3 1507
DLR /PTB GPS P3 DL05 /PT02 1012-2016 / 1001-2016 0.7 3.2 1.9
DMDM/PTB GPSPPP ZM68 /PT02 1011-2016 / 1001-2016 0.3 3.1 1.8
DTAG/PTB GPSPPP DT05 /PT02 1015-2017 / 1001-2016 0.3 2.8 1.2
EIM /PTB GPS MC EI__ /PT10 1011-2007 / 1001-2016 3.0 11.2 10.0
ESTC/PTB GPSPPP ES04 /PT02 1019-2016 / 1001-2016 0.3 3.0 1.7
HKO /PTB GPSPPP HKO2 /PT02 2002-2012 / 1001-2016 0.3 7.8 3.4
ICE /PTB GPS MC CE1_ /PT10 NC / 1001-2016 5.0 20.0
IFAG/PTB GPSPPP IF19 /PT02 1016-2017 / 1001-2016 0.3 5.1 1.0
IGNA/PTB GPS MC IG02 /PT10 NC / 1001-2016 2.5 20.0
IMBH/PTB GPS P3 BH01 /PT02 2004-2016 / 1001-2016 0.7 7.2 1.6
INCP/PTB GPS MC CP__ /PT10 NC / 1001-2016 5.0 20.0
INM /PTB GPS MC IC__ /PT10 NC / 1001-2016 2.0 20.0
INPL/PTB GPSPPP IL05 /PT02 2002-2016 / 1001-2016 0.3 7.2 1.7
INTI/PTB GPS MC IN__ /PT10 NC / 1001-2016 2.5 20.0
INXE/PTB GPSPPP NXRA /PT02 NC / 1001-2016 0.3 20.0
IPQ /PTB GPSPPP IP05 /PT02 NC / 1001-2016 0.4 20.0
JATC/PTB GPS P3 JA01 /PT02 1201-2018 / 1001-2016 0.7 2.5 0.3
JV /PTB GPSPPP JV02 /PT02 1101-2017 / 1001-2016 0.3 4.1 0.9
KEBS/PTB NL
KIM /PTB GPS MC KI02 /PT10 NC_Al / 1001-2016 2.0 20.0 -30.6 0901
KRIS/PTB GPSPPP KRG1 /PT02 1017-2017 / 1001-2016 0.3 3.0 1.7
KZ /PTB NL
LRTE/PTB GPSPPP LRRC /PT02 NC / 1001-2016 0.3 20.0
LT /PTB GPS P3 LT02 /PT02 1014-2018 / 1001-2016 0.7 2.5 0.3
LUX /PTB GPSPPP LU01 /PT02 1012-2018 / 1001-2016 0.3 2.6 0.8
MASM/PTB GPS P3 MN__ /PT02 NC / 1001-2016 0.7 20.0
MBM /PTB NL
MIKE/PTB GPSPPP MI04 /PT02 1102-2015 / 1001-2016 0.3 4.5 2.1
MKEH/PTB GPS MC MK01 /PT10 NC / 1001-2016 1.5 20.0
MSL /PTB GPS P3 MS0_ /PT02 NC / 1001-2016 1.5 20.0
MTC /PTB NL
NAO /PTB GPS MC NAT2 /PT10 NC / 1001-2016 2.0 20.0
NICT/PTB GPSPPP NC4S /PT02 1001-2018 / 1001-2016 0.3 1.6 0.4
NIM /PTB GPSPPP IM06 /PT02 1001-2018 / 1001-2016 0.3 1.5 0.3
NIMB/PTB GPSPPP MB02 /PT02 NA_Al / 1001-2016 0.4 7.4 2.4 32.2 1611
NIMT/PTB GPS MC MTTO /PT10 1013-2017 / 1001-2016 1.5 3.7 2.7
NIS /PTB GPS P3 IS__ /PT02 NC_Al / 1001-2016 1.6 20.0 +16.4 1303
NMIJ/PTB GPSPPP NM0D /PT02 NA_Al / 1001-2016 0.3 3.3 2.8
NMLS/PTB GPS MC LSM1 /PT10 1013-2017 / 1001-2016 1.5 3.7 2.7
NPLI/PTB GPSPPP LI2P /PT02 1013-2018 / 1001-2016 0.3 2.6 0.6
NRC /PTB GPSPPP NRC4 /PT02 1019-2017 / 1001-2016 0.3 2.7 1.1
NRL /PTB GPSPPP RL2_ /PT02 NC / 1001-2016 0.3 20.0
NTSC/PTB GPSPPP NTP1 /PT02 1001-2016 / 1001-2016 0.3 2.5 1.8
ONBA/PTB GPS MC ON__ /PT10 1002-2004 / 1001-2016 2.0 11.2 10.0
ONRJ/PTB GPS P3 RJ02 /PT02 NA / 1001-2016 6.5 20.0 3.6
ORB /PTB GPSPPP OR1Z /PT02 1018-2017 / 1001-2016 0.3 3.0 1.7
PL /PTB GPS P3 PL_3 /PT02 1014-2018 / 1001-2016 0.7 3.0 1.7
SASO/PTB GPSPPP SAS0 /PT02 1020-2017 / 1001-2016 0.4 3.0 1.7
SCL /PTB GPS P3 SC05 /PT10 NC / 1001-2016 1.0 20.0
SG /PTB GPSPPP SG01 /PT02 NA_Al / 1001-2016 0.3 6.6 4.2 -114.2 1802
SIQ /PTB GPSPPP SI01 /PT02 2002-2014 / 1001-2016 0.3 7.5 2.7
SL /PTB GPS P3 SL01 /PT02 NC / 1001-2016 0.7 20.0
SMD /PTB GPSPPP SD01 /PT02 1014-2017 / 1001-2016 0.3 3.0 1.7
SMU /PTB GPS MC SM00 /PT10 NA_Al / 1001-2016 1.5 12.2 10.0 57.8 0908
SU /PTB GPS MC SU19 /PT10 NA_Al / 1001-2016 1.5 8.2 6.5 -7.8 1411
TL /PTB GPSPPP TLT1 /PT02 1001-2018 / 1001-2016 0.3 1.6 0.5
TP /PTB GPSPPP TP04 /PT02 1002-2009 / 1001-2016 0.3 6.7 4.5
UA /PTB GPS MC UA04 /PT10 2003-2011 / 1001-2016 1.5 9.1 5.8
UAE /PTB GPS MC AE__ /PT10 2001-2016 / 1001-2016 4.0 8.5 4.9
UME /PTB GPS P3 UM01 /PT02 1011-2016 / 1001-2016 0.7 3.2 1.9
VMI /PTB GPS MC VM__ /PT10 1013-2017 / 1001-2016 2.0 3.7 2.7
ZA /PTB GPSPPP ZA02 /PT02 1018-2018 / 1001-2016 0.3 3.0 1.7
Link Type Equipment Cal_ID uStb/ns uCal/ns uAg/ns Al/ns YYMM
CH /PTB TWGPPP CH01 /PTB05 0284-2012 0.3 1.9 1.6
IT /PTB TWGPPP IT02 /PTB05 0434-2016 0.3 1.3 0.8
NIST/PTB TWSTFT NIST01/PTB05 0393-2015 0.3 1.9 1.1
NPL /PTB TWSTFT NPL02 /PTB05 NA_Al 0.5 3.2 0.0 0.0 1902
OP /PTB TWGPPP OP01 /PTB05 0437-2016 0.3 1.3 0.8
ROA /PTB TWGPPP ROA01 /PTB05 0440-2016 0.3 1.5 0.8
SP /PTB TWGPPP SP01 /PTB05 0441-2016 0.3 1.3 0.8
USNO/PTB TWGPPP USNO01/PTB05 0395-2016 0.3 1.2 0.6
VSL /PTB TWGPPP VSL01 /PTB05 0295-2015 0.3 1.4 0.9