CIRCULAR T 397 ISSN 1143-1393
2021 FEBRUARY 10, 12h 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 2020/21 0h UTC DEC 31 JAN 5 JAN 10 JAN 15 JAN 20 JAN 25 JAN 30 Uncertainty/ns Notes
MJD 59214 59219 59224 59229 59234 59239 59244 uA uB u
Laboratory k [UTC-UTC(k)]/ns
AOS (Borowiec) -0.3 -0.5 -0.8 -0.7 -0.9 -0.4 -0.4 0.3 2.8 2.8
APL (Laurel) 1.0 1.2 1.4 1.5 -0.1 -0.5 -0.8 0.3 19.6 19.6
AUS (Sydney) -445.2 -440.1 -443.0 -435.3 -433.3 -437.8 -450.0 0.3 11.2 11.2
BEV (Wien) -10.5 -10.9 -17.9 -21.5 -23.7 -21.8 -21.2 0.3 3.3 3.3
BFKH (Budapest) 1855.1 1881.0 1910.1 1932.9 1954.0 1981.0 2008.0 1.5 20.0 20.1
BIM (Sofiya) 13997.3 14038.5 14066.4 14108.5 14138.3 14153.2 14178.6 0.7 7.1 7.2
BIRM (Beijing) - 4.9 4.1 4.0 3.1 1.7 -0.1 0.7 2.8 2.9
BOM (Skopje) -4193.8 -4200.8 -4232.2 -4242.7 -4250.0 -4256.6 -4267.1 1.5 7.5 7.7
BY (Minsk) -0.2 0.0 0.4 1.2 1.5 0.6 1.5 1.5 12.2 12.3
CAO (Cagliari) -24591.9 -24693.0 -24803.2 -24915.3 -25022.8 -25129.9 -25237.2 1.5 20.0 20.1
CH (Bern-Wabern) 21.2 31.6 41.1 38.3 26.1 18.2 12.5 0.3 2.5 2.5
CNES (Toulouse) -0.1 3.5 4.3 5.4 4.9 4.5 4.3 0.3 2.9 2.9
CNM (Queretaro) 1.9 0.7 -0.7 3.3 0.8 0.4 1.1 4.0 11.2 11.9
CNMP (Panama) -3.8 -8.8 -2.5 -9.9 -12.1 -16.0 9.7 0.7 7.3 7.4
DFNT (Tunis) 816.4 1072.3 1304.9 1537.1 1782.7 2000.5 2236.3 1.5 20.0 20.1
DLR (Oberpfaffenhofen) -144.5 -13.2 -89.5 - - - - 0.7 2.8 2.9 (1)
DMDM (Belgrade) -68.6 -67.0 -60.1 -60.9 -60.8 -51.2 -59.0 0.3 3.3 3.3
DTAG (Frankfurt/M) -9.8 -14.9 -14.1 -11.2 -12.6 -15.2 -18.0 0.3 2.8 2.8
EIM (Thessaloniki) 10.7 6.9 9.6 8.1 3.0 7.9 2.3 4.0 11.2 11.9
ESTC (Noordwijk) -2.8 -1.7 -1.6 -0.9 -0.6 -0.6 -0.3 0.3 2.7 2.7
HKO (Hong Kong) 52.9 62.6 76.0 92.4 85.9 91.9 100.4 0.5 2.9 2.9
ICE (San Jose) 4.2 -11.0 -15.4 -4.9 9.9 9.0 20.6 2.5 20.0 20.2
IDN (Serpong-Tangerang) 2523.6 2535.3 2538.1 2536.5 2537.9 2541.5 2559.7 0.3 2.8 2.8
IFAG (Wettzell) -778.1 -780.0 -779.8 -781.8 -788.0 -794.4 -792.3 0.3 3.2 3.2
IGNA (Buenos Aires) - - - - - - -
IMBH (Sarajevo) 1.3 0.0 -1.2 0.4 -1.4 -3.5 -1.8 0.5 2.8 2.9
INCP (Lima) -123.8 -127.3 -127.4 -143.0 -146.7 -170.6 -163.8 5.0 20.0 20.6
INM (Bogota D.C.) -5.7 -9.6 -16.0 -12.3 -11.6 -12.8 -14.7 1.5 20.0 20.1
INPL (Jerusalem) 34.2 26.2 25.4 24.2 20.7 18.4 14.7 0.3 7.2 7.2
INTI (Buenos Aires) - 44.8 55.4 37.3 22.3 23.5 -2.9 5.0 20.0 20.6
INXE (Rio de Janeiro) 14.7 -3.9 -10.5 -13.5 -16.7 -19.4 -27.9 0.3 20.0 20.0
IPQ (Caparica) 253.4 267.2 262.7 263.4 270.7 279.2 275.0 0.5 20.0 20.0
IT (Torino) 0.3 0.3 -0.1 -0.1 0.2 0.3 0.2 0.3 1.3 1.4
JATC (Lintong) 1.8 2.2 0.6 -0.2 -0.7 0.4 1.5 0.3 2.9 2.9
JV (Kjeller) -16.5 0.2 -1.6 12.3 18.1 23.6 18.2 0.3 4.2 4.2
KRIS (Daejeon) 4.8 5.4 6.1 6.0 5.7 5.4 5.5 0.3 3.1 3.1
LRTE (Sao Carlos) 0.1 -3.5 4.2 6.3 6.8 -6.2 -17.1 0.3 20.0 20.0
LT (Vilnius) 796.8 785.5 761.9 767.7 781.4 787.1 783.1 0.3 2.9 2.9
LUX (Belvaux) 130.0 141.1 104.3 48.4 22.1 14.7 17.1 0.3 3.0 3.0
LV (Riga) -275.3 -274.8 -292.3 -302.9 -314.7 -307.7 -316.3 1.5 12.2 12.3
MASM (Bayanzurkh) -808.8 -809.3 -816.8 -818.5 -820.7 -813.3 -805.0 0.4 2.8 2.8
MBM (Podgorica) 1121.9 1140.7 1170.2 1193.4 1223.5 1251.5 1280.9 0.3 20.0 20.0
MIKE (Espoo) 7.2 7.5 7.3 7.0 6.5 5.7 5.2 0.3 2.6 2.7
MSL (Lower Hutt) -1.7 -3.6 -8.6 -12.2 -7.6 -18.8 -22.6 1.5 20.0 20.1
NAO (Mizusawa) 223.8 228.9 228.6 228.8 234.0 241.2 245.9 2.0 20.0 20.1
NICT (Tokyo) 4.3 4.8 6.1 6.5 5.4 5.8 6.1 0.3 2.1 2.1
NIM (Beijing) 0.8 1.0 1.4 1.7 1.6 1.4 1.3 0.3 2.0 2.1
NIMB (Bucharest) -4070.7 -4411.9 -4759.4 -5109.2 -5456.5 -5805.6 -6154.5 0.4 7.4 7.4
NIMT (Pathumthani) - - - - - - -
NIS (Cairo) -46.2 -43.5 -37.9 - - - - 0.7 20.0 20.0
NIST (Boulder) -1.1 -1.0 -0.9 -1.0 -0.8 -0.5 0.2 0.3 2.1 2.1
NMIJ (Tsukuba) -4.1 -3.0 -3.2 -1.9 -1.6 1.0 2.2 0.3 3.3 3.3
NMLS (Sepang) -1688.4 -1660.3 -1633.8 -1606.8 -1574.7 -1550.4 -1524.2 1.5 3.3 3.6
NPL (Teddington) -1.8 -1.8 -2.0 -2.7 -0.4 0.8 0.9 0.3 2.7 2.7
NPLI (New-Delhi) -0.8 -0.8 -1.2 -0.9 -0.6 -0.2 0.2 0.3 2.8 2.8
NRC (Ottawa) 0.6 1.9 3.3 4.8 6.3 8.2 8.8 0.3 3.0 3.0
NRL (Washington DC) 2.7 9.5 5.0 3.2 1.6 -2.7 -1.8 0.3 19.8 19.8
NSAI (Dublin) -169.3 -171.3 -174.8 -174.6 -183.6 -186.8 -199.5 0.4 7.1 7.2
NTSC (Lintong) 1.1 0.7 -0.6 -2.1 -1.7 -0.2 0.7 0.3 2.6 2.6
ONBA (Buenos Aires) - 844.7 860.8 872.3 883.8 877.2 869.3 2.0 11.2 11.4
ONRJ (Rio de Janeiro) 12.1 0.2 -5.3 -0.1 -1.0 5.1 -1.5 0.4 20.0 20.0
OP (Paris) -1.2 -0.6 -0.7 -0.5 0.0 -0.4 -0.2 0.3 1.2 1.3
ORB (Bruxelles) -4.7 -4.1 -2.5 -1.3 1.0 0.0 0.6 0.3 2.7 2.7
PL (Warszawa) -1.9 -1.3 -0.8 0.2 1.2 2.0 3.4 0.4 2.9 2.9
PTB (Braunschweig) -2.6 -2.3 -2.3 -2.1 -1.6 -1.3 -0.8 0.1 0.8 0.8
ROA (San Fernando) -3.5 -3.0 -3.4 -2.1 -2.2 -2.2 -2.2 0.3 1.3 1.4
SASO (Riyadh) -1958.8 -1967.1 -1978.5 -1995.5 -1999.9 -2008.9 -2022.1 0.7 3.0 3.1
SCL (Hong Kong) 14.1 28.2 34.7 45.7 60.6 65.5 71.9 1.0 2.9 3.1
SG (Singapore) -5.1 4.1 7.0 17.9 0.7 -10.2 -6.9 0.7 2.8 2.9
SIQ (Ljubljana) 275.3 293.6 331.1 336.2 360.2 369.5 379.8 0.3 3.7 3.7
SL (Colombo) 74.9 79.8 72.4 64.0 66.8 72.6 - 0.3 2.8 2.8
SMD (Bruxelles) 5.6 1.5 -2.9 -1.1 -7.3 -3.8 -5.3 0.3 3.1 3.1
SMU (Bratislava) 1.7 17.9 14.0 16.7 24.6 41.6 55.8 1.5 12.2 12.3
SP (Boras) -1.2 -0.9 -0.8 -0.5 -0.3 -0.5 -0.3 0.3 1.3 1.3
SU (Moskva) -0.8 -0.5 -0.4 0.0 0.0 -0.1 0.0 0.3 2.0 2.0
TL (Chung-Li) 0.4 0.5 0.7 0.8 0.3 -0.4 -0.8 0.3 2.2 2.2
TP (Praha) 35.5 34.6 24.7 18.3 10.6 3.8 10.6 0.3 2.8 2.8
UA (Kharkov) -5.0 -2.7 -9.1 -12.4 -13.7 -10.6 -13.9 3.0 7.1 7.7
UAE (Abu Dhabi) 15.5 21.5 12.9 6.6 11.3 18.3 16.2 4.0 7.6 8.6
UME (Gebze-Kocaeli) -12.5 -10.2 -9.5 -7.8 -7.3 -7.1 -4.5 0.3 3.3 3.3
USNO (Washington DC) 1.8 1.1 0.8 0.4 -0.5 -0.7 -0.7 0.2 1.4 1.4
VMI (Ha Noi) -18.1 -24.0 -25.1 -20.2 -2.8 11.6 15.1 0.3 7.1 7.1
VSL (Delft) -5.1 1.2 7.9 1.2 -8.7 -2.0 2.9 0.3 2.0 2.0
ZA (Pretoria) -0.2 1.1 1.5 1.5 2.5 4.0 0.2 0.3 2.8 2.8
- Note on section 1:
(1) DLR : Apparent time step of UTC(DLR) of about -200 ns near MJD 59218.5.

2 - Difference between the normalized frequencies of EAL and TAI.
Interval of validity f(EAL)-f(TAI)
Steering correction 59214 - 59244 6.501x10-13 (2020 DEC 31 - 2021 JAN 30)
New correction 59244 - 59269 6.501x10-13 (2021 JAN 30 - 2021 FEB 24)
New correction foreseen 59269 - 59304 6.501x10-13 (2021 FEB 24 - 2021 MAR 31)

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 59214 59244 13.20 8.00 8.00 0.00 0.00 0.07 11.31 PFS/NA T148 8.00 100.0 T396 36 Y (1)
PTB-CS2 59214 59244 -0.49 5.00 12.00 0.00 0.00 0.07 13.00 PFS/NA T148 12.00 100.0 T396 35 Y (1)
IT-CsF2 59214 59229 0.41 0.25 0.37 0.10 0.01 0.37 0.59 PFS/NA T318 0.19 97.9 T396 11 Y (2)
NPL-CsF2 59214 59229 0.16 0.19 0.21 0.05 0.00 0.37 0.46 PFS/NA T284 0.23 99.8 T396 12 Y (3)
NRC-FCs2 59214 59239 -0.01 0.13 0.38 0.10 0.00 0.23 0.47 PFS/NA T389 0.23 98.5 T396 14 Y (4)
SYRTE-FO1 59214 59234 -0.35 0.20 0.33 0.09 0.00 0.28 0.49 PFS/NA T301 0.37 83.5 T396 35 Y (5)
SYRTE-FO2 59214 59244 0.13 0.17 0.21 0.07 0.00 0.20 0.34 PFS/NA T301 0.23 89.7 T396 35 Y (5)
SYRTE-FORb 59214 59244 0.16 0.17 0.25 0.08 0.00 0.20 0.37 0.6 [1] T328 0.34 87.8 T396 36 Y (5)
PTB-CSF1 59204 59214 -0.54 0.12 0.31 0.01 0.00 0.18 0.38 PFS/NA T371 0.28 97.5 T396 27 Y (6)
PTB-CSF1 59214 59244 -0.05 0.08 0.27 0.01 0.00 0.07 0.29 PFS/NA T371 0.28 97.0 T396 27 Y (6)
PTB-CSF2 59219 59244 -0.18 0.11 0.17 0.02 0.00 0.08 0.22 PFS/NA T370 0.17 95.4 T396 39 Y (6)
SU-CsFO2 59214 59244 -0.37 0.21 0.22 0.11 0.00 0.20 0.38 PFS/NA T315 0.50 87.9 T396 31 Y (7)

Notes:
(1) Continuously operating as a clock participating to TAI
(2) Report 05 FEB. 2021 by INRIM
(3) Report 04 FEB. 2021 by NPL
(4) Report 03 FEB. 2021 by NRC
(5) Report 03 FEB. 2021 by LNE-SYRTE
(6) Report 03 FEB. 2021 by PTB
(7) Report 08 FEB. 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 58854-59244, and corresponding uncertainties.

Period of estimation d u
59214-59244 -0.09x10-15 0.12x10-15 (2020 DEC 31 - 2021 JAN 30)

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'= 0.6 ns, σ1'= 6.2 ns

2020/21 0h UTC MJD C0'/ns N0 C1'/ns N1'
DEC 31 59214 4.5 89 14.0 88
JAN 1 59215 5.5 89 14.9 88
JAN 2 59216 5.9 89 16.8 89
JAN 3 59217 5.5 90 17.6 88
JAN 4 59218 4.6 89 18.3 89
JAN 5 59219 4.1 89 18.2 88
JAN 6 59220 3.4 89 17.1 88
JAN 7 59221 3.3 90 18.2 88
JAN 8 59222 3.7 89 17.9 86
JAN 9 59223 3.6 89 17.3 89
JAN 10 59224 3.5 89 17.7 88
JAN 11 59225 4.2 90 18.1 88
JAN 12 59226 4.1 89 18.3 87
JAN 13 59227 3.6 89 16.3 88
JAN 14 59228 3.5 89 16.0 89
JAN 15 59229 4.1 90 15.3 88
JAN 16 59230 3.7 89 14.4 86
JAN 17 59231 3.0 89 15.9 89
JAN 18 59232 3.1 89 17.3 89
JAN 19 59233 2.9 90 17.4 89
JAN 20 59234 2.5 89 17.6 81
JAN 21 59235 2.7 89 18.0 88
JAN 22 59236 2.7 89 20.1 89
JAN 23 59237 1.8 90 21.1 89
JAN 24 59238 1.2 89 20.8 89
JAN 25 59239 0.7 77 21.7 88
JAN 26 59240 0.6 11 21.2 87
JAN 27 59241 2.1 90 20.2 88
JAN 28 59242 2.3 89 21.0 86
JAN 29 59243 2.5 89 19.2 88
JAN 30 59244 3.0 89 19.9 85

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 2.7 1.1
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 0.9
BIRM/PTB GPS P3 BI22 /PT13 1016-2018 / 1001-2018 0.7 2.7 0.9
BOM /PTB GPS MC MABM /PT13 NA_Al / 1001-2018 1.5 7.5 2.6 +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 0.3 2.8 1.2
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 MC DN__ /PT13 NC / 1001-2018 1.5 20.0
DLR /PTB GPS P3 DL05 /PT13 1014-2019 / 1001-2018 0.7 2.7 0.9
DMDM/PTB GPSPPP ZM68 /PT13 1011-2016 / 1001-2018 0.3 3.2 2.0
DTAG/PTB GPSPPP DT05 /PT13 1012-2019 / 1001-2018 0.3 2.7 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 2.6 0.9
HKO /PTB GPSPPP HKO2 /PT13 1011-2018 / 1001-2018 0.5 2.8 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 1.0
IFAG/PTB GPSPPP IF14 /PT13 1016-2017 / 1001-2018 0.3 3.1 1.5
IGNA/PTB NL
IMBH/PTB GPSPPP BH02 /PT13 1011-2019 / 1001-2018 0.5 2.7 0.9
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 7.2 1.9
INTI/PTB GPS MC 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 1.2
JV /PTB GPSPPP JV02 /PT13 1101-2017 / 1001-2018 0.3 4.2 1.4
KRIS/PTB GPSPPP KRG1 /PT13 1017-2017 / 1001-2018 0.3 3.0 1.7
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 1.2
LUX /PTB GPSPPP LU01 /PT13 1012-2018 / 1001-2018 0.3 2.9 1.4
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 2.7 1.1
MBM /PTB GPSPPP ME01 /PT13 NC / 1001-2018 0.3 20.0
MIKE/PTB GPSPPP MI04 /PT13 1016-2019 / 1001-2018 0.3 2.6 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 1.2
NIM /PTB GPSPPP IM06 /PT13 1001-2018 / 1001-2018 0.3 2.0 1.1
NIMB/PTB GPSPPP MB02 /PT13 NA_Al / 1001-2018 0.4 7.4 2.4 32.2 1611
NIMT NL
NIS /PTB GPS P3 IS__ /PT13 NC_Al / 1001-2018 0.7 20.0 +16.4 1303
NMIJ/PTB GPSPPP NM0D /PT13 1001-2014 / 1001-2018 0.3 3.2 2.6
NMLS/PTB GPS MC LSM1 /PT13 1013-2017 / 1001-2018 1.5 3.2 1.7
NPL /PTB GPSPPP NPL2 /PT13 1015-2019 / 1001-2018 0.3 2.6 0.9
NPLI/PTB GPSPPP LI2P /PT13 1013-2018 / 1001-2018 0.3 2.8 1.4
NRC /PTB GPSPPP NRC4 /PT13 1019-2017 / 1001-2018 0.3 2.9 1.5
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 1.9
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 2.6 0.9
PL /PTB GPSPPP PL_3 /PT13 1014-2018 / 1001-2018 0.4 2.8 1.2
SASO/PTB GPSPPP SAS0 /PT13 1020-2017 / 1001-2018 0.7 2.9 1.5
SCL /PTB GPS P3 SC05 /PT13 1011-2018 / 1001-2018 1.0 2.8 1.4
SG /PTB GPS P3 SG01 /PT13 1019-2018 / 1001-2018 0.7 2.7 1.0
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 0.9
SMD /PTB GPSPPP SD01 /PT13 1014-2017 / 1001-2018 0.3 3.0 1.7
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 2.1 1.3
TL /PTB GPSPPP TLT1 /PT13 1001-2018 / 1001-2018 0.3 2.1 1.3
TP /PTB GPSPPP TP02 /PT13 1015-2019 / 1001-2018 0.3 2.7 0.9
UA /PTB GPS MC UA05 /PT13 2003-2018 / 1001-2018 3.0 7.1 1.2
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 3.2 2.0
VMI /PTB GPSPPP VM02 /PT13 2001-2019 / 1001-2018 0.3 7.1 0.9
ZA /PTB GPSPPP ZA02 /PT13 1018-2018 / 1001-2018 0.3 2.7 1.1
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 0.4
NIST/PTB TWGPPP NIST01/PTB05 0393-2015 0.3 2.0 1.5
OP /PTB TWSDRR OP51 /PTB55 0517-2020 0.3 1.0 0.3
ROA /PTB TWGPPP ROA01 /PTB05 0504-2019 0.3 1.1 0.3
SP /PTB TWGPPP SP01 /PTB05 0496-2019 0.3 1.1 0.4
USNO/PTB TWGPPP USNO01/PTB05 0395-2016 0.3 1.7 1.2
VSL /PTB TWGPPP VSL01 /PTB05 0295-2015 0.3 1.8 1.2