CIRCULAR T 399 ISSN 1143-1393
2021 APRIL 09, 13h 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_v0.4.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 2021 0h UTC FEB 24 MAR 1 MAR 6 MAR 11 MAR 16 MAR 21 MAR 26 MAR 31 Uncertainty/ns Notes
MJD 59269 59274 59279 59284 59289 59294 59299 59304 uA uB u
Laboratory k [UTC-UTC(k)]/ns
AOS (Borowiec) -0.3 -0.5 -1.3 -1.2 -1.2 -1.3 -1.3 -1.5 0.3 2.9 2.9
APL (Laurel) 0.1 -0.4 -0.3 0.3 0.1 -0.5 -0.3 -0.9 0.3 19.6 19.6
AUS (Sydney) -473.3 -455.4 -463.2 -474.7 -466.1 -463.4 -467.5 -472.8 0.3 11.2 11.2
BEV (Wien) -44.0 -57.8 -42.2 -23.6 -8.1 8.9 12.8 11.4 0.3 3.3 3.3
BFKH (Budapest) 2145.2 2175.4 2201.0 2232.1 2260.0 2291.4 2318.8 - 1.5 20.0 20.1
BIM (Sofiya) 14320.7 14340.2 14351.4 14367.6 14387.4 14392.3 14439.7 14443.4 0.7 7.1 7.2
BIRM (Beijing) -10.9 -11.6 -8.0 -6.9 -7.1 - -8.3 -7.7 0.7 2.8 2.9
BOM (Skopje) -4336.6 -4352.8 -4355.2 -4365.5 -4364.9 -4368.4 -4384.7 -4388.2 5.0 7.5 9.0
BY (Minsk) 3.3 3.7 3.9 3.9 1.3 0.1 -0.6 0.1 1.5 12.1 12.2
CAO (Cagliari) -25770.5 -25877.4 -25984.4 -26088.8 -26202.9 -26314.0 -26427.0 -26534.0 1.5 20.0 20.1
CH (Bern-Wabern) -2.1 -1.6 -1.2 -1.2 -1.3 -0.7 -0.3 0.0 0.3 2.5 2.5
CNES (Toulouse) 2.2 2.6 3.4 3.9 3.6 3.5 4.3 4.6 0.7 2.9 3.0
CNM (Queretaro) -3.7 -12.0 4.1 - - - -3.2 -6.0 4.0 11.2 11.9
CNMP (Panama) -6.9 2.2 3.8 7.3 7.2 1.1 -9.0 -11.1 0.7 7.3 7.4
DFNT (Tunis) 3417.0 3642.6 3887.3 4157.7 4411.5 4650.3 4902.4 5134.6 0.7 20.0 20.0
DLR (Oberpfaffenhofen) - - - - - - - -
DMDM (Belgrade) -28.4 -13.5 -5.3 8.2 14.5 -2.9 -4.9 1.1 0.3 3.3 3.3
DTAG (Frankfurt/M) -16.9 -16.7 -17.6 -16.8 -21.5 -21.4 -10.7 -6.0 0.3 2.9 2.9
EIM (Thessaloniki) 15.0 3.4 7.1 9.9 -0.3 1.9 -0.2 8.1 4.0 11.2 11.9
ESTC (Noordwijk) 0.1 -0.3 -0.8 -0.8 -1.0 -0.7 -0.6 -0.1 0.3 2.8 2.8
HKO (Hong Kong) 96.4 103.7 100.7 115.6 112.2 - - - 0.5 3.0 3.1
ICE (San Jose) 62.4 67.3 67.6 65.6 66.9 70.0 67.5 65.7 2.5 20.0 20.2
IDN (Serpong-Tangerang) 134.1 141.8 137.0 193.8 194.3 227.4 253.6 238.8 0.3 2.8 2.8
IFAG (Wettzell) -805.0 -810.4 -812.6 -818.7 -813.7 -823.3 -824.6 -828.4 0.3 2.8 2.8
IGNA (Buenos Aires) - - - - - - - -
IMBH (Sarajevo) -3.0 3.1 4.6 0.3 -0.6 1.6 -1.7 -1.1 0.7 2.8 2.9
INCP (Lima) -158.4 -176.8 -195.3 -197.5 -203.1 -193.3 -205.0 -204.8 5.0 20.0 20.6
INM (Bogota D.C.) -37.4 -18.8 -45.3 -93.4 -117.8 -113.0 -10.7 -2.6 1.5 20.0 20.1 (1)
INPL (Jerusalem) -10.1 -23.2 -32.8 -37.8 -52.0 -59.5 -66.6 -72.4 0.3 7.3 7.3
INTI (Buenos Aires) -1.9 17.4 32.3 12.4 18.9 -38.5 -46.0 -6.2 5.0 20.0 20.6
INXE (Rio de Janeiro) -6.1 0.6 4.8 - - - 3.2 8.9 0.3 20.0 20.0
IPQ (Caparica) 305.4 309.6 315.3 319.9 329.8 327.8 332.5 331.8 0.5 20.0 20.0
IT (Torino) -1.2 -1.4 -1.2 -1.3 -1.7 -1.6 -1.4 -1.3 0.3 1.3 1.4
JATC (Lintong) 1.2 0.8 0.9 0.7 0.5 0.3 1.5 2.0 0.3 2.9 2.9
JV (Kjeller) 2.1 -3.2 3.0 9.4 21.0 4.3 0.9 4.8 0.3 4.3 4.3
KRIS (Daejeon) 5.1 5.3 5.2 4.9 4.7 4.8 4.1 3.8 0.3 3.2 3.2
LRTE (Sao Carlos) 20.2 18.7 11.4 9.5 14.0 18.1 16.8 10.5 0.3 20.0 20.0
LT (Vilnius) 797.2 800.2 780.5 804.8 816.2 829.5 825.1 811.6 0.3 2.9 2.9
LUX (Belvaux) 4.6 9.0 6.2 4.6 4.0 4.8 9.1 7.9 0.3 3.0 3.0
LV (Riga) -335.7 -332.8 -343.3 -346.9 -345.3 -356.4 -364.3 -353.0 1.5 12.2 12.3
MASM (Bayanzurkh) -797.8 -788.2 -785.6 -784.3 -777.0 -781.3 -778.0 -764.0 0.4 2.9 2.9
MBM (Podgorica) 1375.3 1402.6 1436.7 1455.9 1474.6 1504.5 1524.4 1546.8 0.3 20.0 20.0
MIKE (Espoo) 3.0 2.5 2.2 1.8 1.7 1.6 2.0 2.3 0.3 2.7 2.8
MSL (Lower Hutt) -35.0 -31.1 -25.9 -13.5 -13.9 -16.9 -12.7 -3.1 1.5 20.0 20.1
NAO (Mizusawa) 277.0 278.4 281.0 283.1 284.3 284.9 287.9 292.8 2.0 20.0 20.1
NICT (Tokyo) 1.9 1.5 1.6 -0.5 -1.2 -3.0 -4.8 -9.7 0.3 2.1 2.2
NIM (Beijing) 0.4 0.4 0.5 0.3 0.5 0.8 1.3 1.5 0.3 2.0 2.0
NIMB (Bucharest) -5989.1 -5564.9 -5143.7 -4720.0 -4292.6 -3862.6 -3432.3 -3007.8 0.3 7.4 7.5
NIMT (Pathumthani) - - - - - - - -
NIS (Cairo) - - - - - - - -
NIST (Boulder) -0.5 -1.0 -1.0 -0.9 -1.1 -0.6 0.0 0.8 0.3 2.1 2.1
NMIJ (Tsukuba) 2.7 1.7 0.3 -0.9 -0.6 -0.8 -0.6 -0.8 0.3 3.3 3.3
NMLS (Sepang) -1381.5 -1352.8 -1334.4 -1307.5 -1280.6 -1250.8 -1215.4 -1201.2 1.5 3.3 3.6
NPL (Teddington) -0.9 -2.3 -1.7 -2.2 -1.4 -1.3 -1.9 0.3 0.3 2.8 2.8
NPLI (New-Delhi) 0.1 0.0 0.3 0.4 0.5 0.7 1.1 1.3 0.3 2.9 2.9
NRC (Ottawa) 9.4 9.3 9.7 10.0 10.5 11.2 12.2 13.4 0.3 3.1 3.1
NRL (Washington DC) -1.8 -3.8 7.6 9.3 2.2 -1.6 4.7 5.1 0.3 19.7 19.7
NSAI (Dublin) -209.6 -219.3 -222.7 -224.5 -226.5 -231.6 -235.1 -241.4 0.4 7.1 7.2
NTSC (Lintong) -1.3 -1.2 -0.4 -0.3 -0.3 -0.5 0.3 1.5 0.3 2.6 2.6
ONBA (Buenos Aires) 902.2 921.1 936.3 942.9 956.6 963.5 987.2 1012.1 2.0 11.2 11.4
ONRJ (Rio de Janeiro) 4.9 0.5 7.0 7.2 2.9 0.7 -2.7 -1.8 0.4 20.0 20.0
OP (Paris) 0.4 0.0 -0.2 -0.1 0.0 -0.3 0.0 0.1 0.3 1.3 1.3
ORB (Bruxelles) 0.1 0.6 0.3 0.0 -0.2 0.3 0.7 1.7 0.3 2.8 2.8
PL (Warszawa) 6.8 8.1 9.1 9.0 8.4 8.7 8.2 7.7 0.4 2.9 2.9
PTB (Braunschweig) 0.2 0.3 0.5 0.5 0.6 0.7 0.9 0.9 0.1 0.8 0.8
ROA (San Fernando) -2.4 -2.7 -2.2 -2.5 -1.7 -0.6 -0.7 -0.9 0.3 1.4 1.4
SASO (Riyadh) -2072.0 -2076.8 -2093.4 -2105.3 -2111.2 -2120.6 -2135.2 -2146.0 0.7 3.0 3.1
SCL (Hong Kong) 64.8 65.1 68.1 66.6 56.4 57.0 57.7 55.4 0.4 3.0 3.0
SG (Singapore) -1.3 0.9 0.6 11.5 10.2 14.7 6.6 1.1 0.3 2.8 2.8
SIQ (Ljubljana) 429.4 448.0 441.3 443.3 448.0 453.6 472.8 496.4 0.3 3.7 3.7
SL (Colombo) 60.8 61.2 57.3 57.4 51.9 46.0 44.1 - 0.3 2.8 2.8
SMD (Bruxelles) -13.6 -16.3 -9.4 -10.4 -8.1 -9.2 -8.3 -5.2 0.3 3.2 3.2
SMU (Bratislava) 114.0 117.6 122.6 133.1 135.5 143.6 138.2 115.6 1.5 12.2 12.3
SP (Boras) -0.8 -1.3 -1.0 -0.6 -0.3 0.3 1.1 1.6 0.3 1.3 1.3
SU (Moskva) 0.9 1.1 1.8 1.8 2.0 2.5 2.7 2.7 0.3 2.1 2.1
TL (Chung-Li) -1.5 -2.8 -2.3 -1.9 -1.4 -0.1 -0.1 0.7 0.3 2.0 2.1 (2)
TP (Praha) 13.5 19.6 22.0 22.0 32.0 30.1 18.6 10.6 0.3 2.8 2.8
UA (Kharkov) -8.9 0.0 -8.5 -10.9 -6.8 -7.2 -0.9 10.2 3.0 7.1 7.7
UAE (Abu Dhabi) 13.4 15.5 11.9 18.7 17.6 24.9 20.9 8.1 4.0 7.6 8.6
UME (Gebze-Kocaeli) -8.2 -9.9 -10.4 -8.9 -6.4 -3.5 -0.7 -1.4 0.3 3.4 3.4
USNO (Washington DC) -0.1 -0.2 -0.2 0.2 0.0 -0.3 -0.3 -0.1 0.2 1.4 1.4
VMI (Ha Noi) 12.6 8.9 4.5 16.0 16.2 9.6 6.6 2.3 0.3 7.1 7.2
VSL (Delft) -3.9 -2.1 1.1 -2.9 -3.3 -0.3 0.8 -2.2 0.3 2.0 2.0
ZA (Pretoria) 5.9 0.9 -0.6 -2.3 -4.0 -6.7 -6.6 -5.5 0.3 2.9 2.9
- Note on section 1:
(1) INM : Time step of UTC(INM) of -50 ns on MJD 59269.66.
(2) TL : Time step of UTC(TL) of about +1.5ns on MJD 59270 due to calibration.

2 - Difference between the normalized frequencies of EAL and TAI.
Interval of validity f(EAL)-f(TAI)
Steering correction 59269 - 59304 6.501x10-13 (2021 FEB 24 - 2021 MAR 31)
New correction 59304 - 59334 6.501x10-13 (2021 MAR 31 - 2021 APR 30)
New correction foreseen 59334 - 59364 6.501x10-13 (2021 APR 30 - 2021 MAY 30)

3 - Duration of the TAI scale interval d.

Table 1: Estimate of d by individual PSFS measurements and corresponding uncertainty.
All values are expressed in 10-15 and are valid only for the stated period of estimation.
Standard Period of d uA uB uA/Lab uB/Lab ul/Tai u uSrep Ref(uS) Ref(uB) uB(Ref) Uptime LastRep Nrep3y Steer Note
Estimation %
PTB-CS1 59269 59304 -20.04 8.00 8.00 0.00 0.00 0.06 11.31 PFS/NA T148 8.00 100.0 T398 36 Y (1)
PTB-CS2 59269 59304 -8.96 5.00 12.00 0.00 0.00 0.06 13.00 PFS/NA T148 12.00 100.0 T398 35 Y (1)
IT-CsF2 59269 59304 -0.03 0.20 0.38 0.10 0.01 0.17 0.47 PFS/NA T318 0.19 87.9 T398 13 Y (2)
NIST-Yb1 59249 59269 -0.18 0.01 0.01 0.41 0.03 0.28 0.50 0.5 [1] T374 0.01 4.9 T374 8 Y (3)
NIST-Yb1 59269 59304 -0.41 0.01 0.01 0.29 0.03 0.17 0.34 0.5 [1] T374 0.01 5.4 T374 8 Y (4)
NPL-CsF2 59269 59304 -0.17 0.16 0.20 0.01 0.02 0.17 0.31 PFS/NA T284 0.23 99.2 T397 13 Y (5)
NRC-FCs2 59269 59304 -0.11 0.10 0.36 0.10 0.00 0.17 0.42 PFS/NA T389 0.23 100.0 T398 16 Y (6)
SYRTE-FO2 59274 59304 -0.33 0.20 0.22 0.06 0.00 0.20 0.36 PFS/NA T301 0.23 92.4 T398 35 Y (7)
SYRTE-FORb 59269 59299 -0.08 0.30 0.26 0.06 0.00 0.20 0.45 0.6 [1] T328 0.34 93.9 T398 36 Y (7)
PTB-CSF1 59269 59304 -0.14 0.07 0.27 0.05 0.00 0.06 0.29 PFS/NA T371 0.28 92.6 T398 27 Y (8)
PTB-CSF2 59269 59304 -0.20 0.10 0.17 0.03 0.00 0.06 0.21 PFS/NA T370 0.17 94.8 T398 39 Y (8)
SU-CsFO2 59269 59304 -0.34 0.22 0.22 0.13 0.00 0.17 0.38 PFS/NA T315 0.50 62.8 T398 31 Y (9)

Notes:
(1) Continuously operating as a clock participating to TAI
(2) Report 07 APR. 2021 by INRIM
(3) Report 09 APR. 2021 by NIST
(4) Report 06 APR. 2021 by NIST
(5) Report 04 APR. 2021 by NPL
(6) Report 01 APR. 2021 by NRC
(7) Report 03 APR. 2021 by LNE-SYRTE
(8) Report 01 APR. 2021 by PTB
(9) Report 02 APR. 2021 by SU
[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.

Table 2: Estimate of d by the BIPM based on all PSFS measurements identified to be used for TAI steering
over the period MJD 58909-59304, and corresponding uncertainties.

Period of estimation d u
59269-59304 -0.19x10-15 0.11x10-15 (2021 FEB 24 - 2021 MAR 31)

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'= 0.5 ns, σ1'= 6.7 ns

2021 0h UTC MJD C0'/ns N0 C1'/ns N1'
FEB 24 59269 0.1 90 18.5 78
FEB 25 59270 0.6 89 18.3 84
FEB 26 59271 2.8 89 20.4 86
FEB 27 59272 4.5 89 21.2 87
FEB 28 59273 5.0 90 20.5 90
MAR 1 59274 6.2 89 21.0 87
MAR 2 59275 7.5 89 21.1 88
MAR 3 59276 7.4 89 23.6 87
MAR 4 59277 7.1 90 31.8 88
MAR 5 59278 7.0 89 37.2 86
MAR 6 59279 6.3 89 33.5 88
MAR 7 59280 5.3 89 24.5 89
MAR 8 59281 4.3 90 16.7 89
MAR 9 59282 3.1 89 13.8 86
MAR 10 59283 3.4 89 13.4 89
MAR 11 59284 4.0 89 12.4 89
MAR 12 59285 3.5 90 11.1 84
MAR 13 59286 2.9 89 11.9 84
MAR 14 59287 2.3 89 13.0 82
MAR 15 59288 1.7 89 13.3 87
MAR 16 59289 1.4 90 12.8 90
MAR 17 59290 1.1 89 13.9 88
MAR 18 59291 1.9 89 17.5 89
MAR 19 59292 3.0 89 19.7 88
MAR 20 59293 3.3 90 20.8 81
MAR 21 59294 2.8 89 20.2 88
MAR 22 59295 3.3 89 19.9 80
MAR 23 59296 3.6 89 21.4 84
MAR 24 59297 3.5 90 23.0 84
MAR 25 59298 3.1 89 21.7 86
MAR 26 59299 1.5 89 20.4 87
MAR 27 59300 0.3 89 20.6 88
MAR 28 59301 0.0 90 22.1 84
MAR 29 59302 -0.3 89 24.2 88
MAR 30 59303 -0.7 89 23.6 85
MAR 31 59304 -0.6 89 23.0 89

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

Link Type Equipment Cal_ID1 / Cal_ID2 uStb/ns uCal/ns uAg/ns Al/ns YYMM
AOS /PTB GPSPPP AO_4 /PT13 1014-2018 / 1001-2018 0.3 2.8 1.2
APL /PTB GPSPPP AP04 /PT13 NC / 1001-2018 0.3 20.0
AUS /PTB GPSPPP AU04 /PT13 1002-2010 / 1001-2018 0.3 11.2 10.0
BEV /PTB GPSPPP BE1_ /PT13 1012-2016 / 1001-2018 0.3 3.2 2.0
BFKH/PTB GPS MC MK01 /PT13 NC / 1001-2018 1.5 20.0
BIM /PTB GPSPPP BM51 /PT13 2007-2019 / 1001-2018 0.7 7.1 1.0
BIRM/PTB GPS P3 BI22 /PT13 1016-2018 / 1001-2018 0.7 2.7 1.0
BOM /PTB GPS MC MABM /PT13 NA_Al / 1001-2018 5.0 7.5 2.7 +4.4 2003
BY /PTB GPS MC BY46 /PT13 2001-2008 / 1001-2018 1.5 12.2 10.0
CAO /PTB GPS MC CA__ /PT13 NC / 1001-2018 1.5 20.0
CNES/PTB GPSPPP CS21 /PT13 1015-2018 / 1001-2018 0.7 2.8 1.3
CNM /PTB GPS MC CN00 /PT13 NA_Al / 1001-2018 4.0 11.2 10.0 -27.3 0804
CNMP/PTB GPS P3 MP1_ /PT13 NA_Al / 1001-2018 0.7 7.3 2.2 41.7 1807
DFNT/PTB GPS P3 DN__ /PT13 NC_Al / 1001-2018 0.7 20.0 10.3 1507
DLR/PTB NL
DMDM/PTB GPSPPP ZM68 /PT13 1011-2016 / 1001-2018 0.3 3.2 2.1
DTAG/PTB GPSPPP DT05 /PT13 1012-2019 / 1001-2018 0.3 2.8 0.9
EIM /PTB GPS MC EI__ /PT13 NA / 4.0 11.2 10.0
ESTC/PTB GPSPPP ES07 /PT13 1013-2020 / 1001-2018 0.3 2.7 0.9
HKO /PTB GPSPPP HKO2 /PT13 1011-2018 / 1001-2018 0.5 2.9 1.4
ICE /PTB GPS MC CE1_ /PT13 NC / 1001-2018 2.5 20.0
IDN /PTB GPSPPP KI01 /PT13 1017-2018 / 1001-2018 0.3 2.7 1.1
IFAG/PTB GPSPPP IF20 /PT13 1014-2020 / 1001-2018 0.3 2.7 0.9
IGNA/PTB NL
IMBH/PTB GPSPPP BH02 /PT13 1011-2019 / 1001-2018 0.7 2.7 1.0
INCP/PTB GPS MC CP__ /PT13 NC / 1001-2018 5.0 20.0
INM /PTB GPS MC IC__ /PT13 NC / 1001-2018 1.5 20.0
INPL/PTB GPSPPP IL06 /PT13 2003-2016 / 1001-2018 0.3 7.3 1.9
INTI/PTB GPS P3 INTI /PT13 NC / 1001-2018 5.0 20.0
INXE/PTB GPSPPP NXRA /PT13 NC / 1001-2018 0.3 20.0
IPQ /PTB GPSPPP IP05 /PT13 NC / 1001-2018 0.5 20.0
JATC/PTB GPSPPP JA01 /PT13 1201-2018 / 1001-2018 0.3 2.8 1.3
JV /PTB GPSPPP JV02 /PT13 1101-2017 / 1001-2018 0.3 4.3 1.5
KRIS/PTB GPSPPP KRG1 /PT13 1017-2017 / 1001-2018 0.3 3.1 1.8
LRTE/PTB GPSPPP LRRC /PT13 NC / 1001-2018 0.3 20.0
LT /PTB GPSPPP LT02 /PT13 1014-2018 / 1001-2018 0.3 2.8 1.3
LUX /PTB GPSPPP LU01 /PT13 1012-2018 / 1001-2018 0.3 2.9 1.5
LV /PTB GPS MC LV01 /PT13 2001-2007 / 1001-2018 1.5 12.2 10.0
MASM/PTB GPSPPP MN__ /PT13 1019-2018 / 1001-2018 0.4 2.8 1.2
MBM /PTB GPSPPP ME01 /PT13 NC / 1001-2018 0.3 20.0
MIKE/PTB GPSPPP MI04 /PT13 1016-2019 / 1001-2018 0.3 2.7 0.9
MSL /PTB GPS P3 MS0_ /PT13 NC / 1001-2018 1.5 20.0
NAO /PTB GPS MC NAT2 /PT13 NC / 1001-2018 2.0 20.0
NICT/PTB GPSPPP NC4S /PT13 1001-2018 / 1001-2018 0.3 2.1 1.3
NIM /PTB GPSPPP IM06 /PT13 1001-2020 / 1001-2018 0.3 1.9 0.9
NIMB/PTB GPSPPP MB02 /PT13 NA_Al / 1001-2018 0.3 7.4 2.4 32.2 1611
NIMT/PTB NL
NIS /PTB NL
NMIJ/PTB GPSPPP NM0D /PT13 1001-2014 / 1001-2018 0.3 3.2 2.7
NMLS/PTB GPS MC LSM1 /PT13 1013-2017 / 1001-2018 1.5 3.2 1.8
NPL /PTB GPSPPP NPL2 /PT13 1015-2019 / 1001-2018 0.3 2.7 0.9
NPLI/PTB GPSPPP LI2P /PT13 1013-2018 / 1001-2018 0.3 2.9 1.4
NRC /PTB GPSPPP NRC4 /PT13 1019-2017 / 1001-2018 0.3 3.0 1.6
NRL /PTB GPSPPP RL2_ /PT13 NC / 1001-2018 0.3 20.0
NSAI/PTB GPSPPP IE01 /PT13 2022-2019 / 1001-2018 0.4 7.1 0.9
NTSC/PTB GPSPPP NTP1 /PT13 1001-2016 / 1001-2018 0.3 2.6 2.0
ONBA/PTB GPS MC ON__ /PT13 1002-2004 / 1001-2018 2.0 11.2 10.0
ONRJ/PTB GPSPPP RJ03 /PT13 NC_Al / 1001-2018 0.4 20.0 -11.7 1912
ORB /PTB GPSPPP OR5Z /PT13 1011-2020 / 1001-2018 0.3 2.7 0.9
PL /PTB GPSPPP PL_3 /PT13 1014-2018 / 1001-2018 0.4 2.8 1.3
SASO/PTB GPSPPP SAS0 /PT13 1020-2017 / 1001-2018 0.7 2.9 1.5
SCL /PTB GPSPPP SC05 /PT13 1011-2018 / 1001-2018 0.4 2.9 1.4
SG /PTB GPSPPP SG01 /PT13 1019-2018 / 1001-2018 0.3 2.7 1.1
SIQ /PTB GPSPPP SI01 /PT13 1013-2019 / 1001-2018 0.3 3.6 0.9
SL /PTB GPSPPP SL01 /PT13 1017-2018 / 1001-2018 0.3 2.7 1.0
SMD /PTB GPSPPP SD01 /PT13 1014-2017 / 1001-2018 0.3 3.1 1.8
SMU /PTB GPS MC SM00 /PT13 NA_Al / 1001-2018 1.5 12.2 10.0 57.8 0908
SU /PTB GPSPPP SU31 /PT13 1001-2018 / 1001-2018 0.3 2.2 1.3
TL /PTB GPSPPP TLT1 /PT13 1001-2020 / 1001-2018 0.3 1.9 0.9
TP /PTB GPSPPP TP02 /PT13 1015-2019 / 1001-2018 0.3 2.7 1.0
UA /PTB GPS MC UA05 /PT13 2003-2018 / 1001-2018 3.0 7.1 1.3
UAE /PTB GPS MC AE__ /PT13 2001-2016 / 1001-2018 4.0 7.6 2.9
UME /PTB GPSPPP UM01 /PT13 1011-2016 / 1001-2018 0.3 3.3 2.1
VMI /PTB GPSPPP VM02 /PT13 2001-2019 / 1001-2018 0.3 7.1 1.0
ZA /PTB GPSPPP ZA02 /PT13 1018-2018 / 1001-2018 0.3 2.8 1.2
Link Type Equipment Cal_ID uStb/ns uCal/ns uAg/ns Al/ns YYMM
CH /PTB TWGPPP CH01 /PTB05 0284-2012 0.3 2.4 2.0
IT /PTB TWGPPP IT02 /PTB05 0502-2019 0.3 1.1 0.5
NIST/PTB TWGPPP NIST01/PTB05 0393-2015 0.3 2.0 1.6
OP /PTB TWSDRR OP51 /PTB55 0517-2020 0.3 1.1 0.4
ROA /PTB TWGPPP ROA01 /PTB05 0504-2019 0.3 1.1 0.4
SP /PTB TWGPPP SP01 /PTB05 0496-2019 0.3 1.1 0.5
USNO/PTB TWGPPP USNO01/PTB05 0395-2016 0.3 1.7 1.2
VSL /PTB TWGPPP VSL01 /PTB05 0295-2015 0.3 1.8 1.3