CIRCULAR T 449

ISSN 1143-1393
2025 JUNE 13, 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_v0.8.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 2025 0h UTC APR 29 MAY 4 MAY 9 MAY 14 MAY 19 MAY 24 MAY 29 Uncertainty/ns Notes
MJD 60794 60799 60804 60809 60814 60819 60824 uA uB u
Laboratory k [UTC-UTC(k)]/ns
AGGO (La Plata) 380.0 366.1 357.2 358.1 365.4 382.7 379.0 0.7 3.0 3.1
AOS (Borowiec) -9.4 -10.1 -10.8 -11.2 -11.2 -10.8 -10.0 0.3 2.7 2.7
APL (Laurel) -0.4 0.3 1.4 2.5 2.4 3.1 3.5 0.3 NC -
AUS (Sydney) 8.2 26.6 27.3 2.8 -12.5 -24.0 -12.3 0.3 3.0 3.0
BEV (Wien) 3.7 8.0 8.7 12.5 15.4 17.9 18.2 0.3 3.0 3.0
BFKH (Budapest) 2197.0 2247.3 2301.6 2339.9 2389.8 2443.7 2492.8 0.7 7.1 7.1
BIM (Sofiya) 3948.7 3999.6 4041.8 4084.7 4125.6 4176.5 4223.1 0.3 2.7 2.7
BIRM (Beijing) -3.1 1.3 3.1 1.2 0.2 0.5 0.5 0.3 3.5 3.5
BSJ (Kingston) 42.0 6.7 36.8 29.2 14.7 21.7 30.0 7.0 7.1 10.0
BY (Minsk) 2.2 2.4 0.5 -0.3 -0.9 -1.1 -0.2 1.5 3.2 3.5
CAO (Cagliari) -21283.8 -21400.4 -21530.4 -21645.0 -21763.7 -21888.0 -22012.8 0.7 NC -
CH (Bern-Wabern) -0.1 -0.4 -0.8 -1.2 -0.9 -0.5 -0.3 0.3 1.1 1.1
CNES (Toulouse) 1.0 0.4 1.0 1.0 1.2 1.8 1.1 0.3 3.1 3.1
CNM (Queretaro) -0.6 -1.3 0.0 0.7 2.3 4.3 0.9 3.0 4.4 5.3
CNMP (Panama) -1.1 -0.1 -1.8 -5.9 -8.0 -2.1 3.2 0.3 5.5 5.5
DFM (Horsholm) -7.2 -8.5 -9.5 -10.3 -5.6 -6.2 -7.5 0.3 2.8 2.8
DFNT (Tunis) 278.7 213.6 154.0 102.3 48.0 -9.0 -77.8 0.7 2.7 2.8
DLR (Oberpfaffenhofen) -1.3 -2.2 -0.8 2.2 0.5 -0.9 -2.5 0.7 2.7 2.8
DMDM (Belgrade) -38.7 -29.9 - -13.3 -8.3 -4.2 13.7 0.3 7.5 7.5
DTAG (Frankfurt/M) 25.9 29.5 31.0 37.6 41.3 55.6 64.6 0.3 3.5 3.5
ESA (Noordwijk) 1.0 0.4 0.2 -0.8 0.0 0.4 0.3 0.3 2.7 2.7
HKO (Hong Kong) 127.3 118.8 130.0 143.5 147.5 150.1 157.5 0.3 3.7 3.7
IBM (La Paz) 335.1 352.3 341.3 338.0 - 344.1 337.2 4.0 7.6 8.6
ICE (San Jose) -31.7 -34.8 -55.5 -58.6 -51.9 -52.1 -28.6 0.3 7.1 7.1
IDN (Serpong-Tangerang) -768.3 -774.4 -788.3 -784.1 -788.1 -794.9 -812.4 0.3 NC -
IFAG (Wettzell) -712.4 -713.3 -720.5 -742.5 -745.1 -751.6 -754.2 0.3 2.7 2.7
IFZG (Zagreb) 175.3 179.6 188.9 193.6 199.3 203.1 208.1 0.3 2.7 2.7
IGNA (Buenos Aires) - - - - - - -
IMBH (Sarajevo) -0.5 2.1 -0.4 1.5 -0.4 -0.2 1.6 0.3 2.9 2.9
INCP (Lima) -4.2 -29.5 -35.7 -13.9 -3.6 -20.7 -2.4 5.0 NC -
INM (Bogota D.C.) 5.3 15.4 18.6 24.3 17.5 16.6 16.5 3.0 NC -
INPL (Jerusalem) -103.2 -100.2 -107.8 -106.8 -117.3 -127.0 -127.5 0.3 7.6 7.6
INTI (Buenos Aires) 248.9 247.6 236.6 239.9 234.9 227.2 234.7 0.7 3.3 3.4
INXE (Rio de Janeiro) -4.2 0.8 4.3 1.4 -0.9 -4.3 13.8 0.3 3.3 3.3
IPQ (Caparica) 1823.9 1804.6 1805.1 1793.6 1795.9 1788.9 1790.0 0.7 3.0 3.1
IT (Torino) 0.1 -0.3 -0.6 -0.6 -0.8 -0.8 -0.9 0.3 1.1 1.1
JATC (Lintong) -0.5 -0.5 -0.6 -0.4 -0.5 -0.5 -0.7 0.3 3.7 3.7
JV (Kjeller) 2.3 1.5 1.1 0.7 1.1 1.8 0.9 0.3 4.9 4.9
KRIS (Daejeon) -2.6 -2.6 -1.9 -1.9 -2.6 -2.4 -1.0 0.3 3.0 3.0
KZ (Astana) -4.2 -3.7 -2.7 -3.1 -1.7 -2.3 -2.4 0.7 4.3 4.4
LRTE (Sao Carlos) 1.4 7.6 -0.9 -0.4 0.9 -1.8 -3.9 0.4 NC -
LT (Vilnius) 938.8 939.7 943.2 953.7 957.9 950.1 961.5 0.3 2.7 2.7
LUX (Belvaux) -10.1 0.3 5.1 12.4 7.3 7.1 5.8 0.3 2.7 2.7
MASM (Bayanzurkh) - - - - - - -
MBM (Podgorica) 3185.2 3201.5 3221.6 3242.7 3259.1 3273.2 3279.5 0.3 2.9 2.9
MIKE (Espoo) 1.4 -1.3 -4.0 -7.8 -10.6 -11.6 -13.6 0.3 2.7 2.7
MSL (Lower Hutt) 26.1 25.8 31.5 36.5 33.1 43.7 34.0 0.7 3.0 3.1
MTC (Makkah) - - - - - - -
NAO (Mizusawa) 2396.3 2413.5 2435.4 2464.9 2484.3 2501.9 2526.7 2.0 3.8 4.3
NICT (Tokyo) 1.5 1.2 0.9 1.1 0.8 1.1 0.9 0.3 1.9 1.9
NIM (Beijing) 1.3 1.2 1.6 1.7 1.5 1.3 1.1 0.2 1.9 1.9
NIMB (Bucharest) - - - - - - -
NIMT (Pathumthani) 30.3 28.9 30.7 27.6 30.7 28.3 15.3 0.3 3.0 3.0
NIS (Cairo) 29.0 22.7 21.1 10.0 -10.4 -26.1 -33.0 0.7 7.2 7.2
NIST (Boulder) -0.5 -0.1 0.4 0.7 0.3 -0.0 -0.8 0.3 2.0 2.0
NMIJ (Tsukuba) -33.8 -23.3 -10.4 3.0 6.5 5.7 2.9 0.3 2.9 2.9
NMLS (Sepang) -244.9 -250.8 -256.6 -258.7 -268.3 -277.3 -276.9 0.3 2.7 2.7
NPL (Teddington) -0.7 -1.0 1.2 -0.9 0.4 0.7 0.1 0.5 1.1 1.2
NPLI (New-Delhi) 0.4 0.0 -0.5 -0.4 -0.5 -0.5 -1.0 0.3 2.7 2.7
NRC (Ottawa) -0.5 -0.4 0.0 0.3 -3.3 -3.1 -2.4 0.3 2.7 2.7 (1)
NRL (Washington DC) 2.0 2.3 1.5 0.9 -4.2 -8.7 -7.9 0.3 2.7 2.7
NSAI (Dublin) -6.3 57.5 47.0 23.4 24.6 24.9 11.0 0.3 7.4 7.4
NTSC (Lintong) 0.8 0.9 1.0 1.0 0.9 1.0 0.8 0.2 3.5 3.5
ONBA (Buenos Aires) 2045.8 2055.3 2074.5 2096.0 2127.0 2135.7 2140.4 2.0 3.3 3.9
ONRJ (Rio de Janeiro) -2.3 0.6 -1.3 -2.8 -7.7 -0.9 -1.3 0.3 3.2 3.2
OP (Paris) -0.2 0.0 -0.1 -0.3 -0.7 -0.7 -1.0 0.3 1.1 1.1
ORB (Bruxelles) 1.4 1.3 0.9 0.4 -0.3 -0.5 -0.7 0.3 2.7 2.7
PL (Warszawa) 2.8 2.0 1.0 0.5 -0.1 -0.0 -0.1 0.3 2.7 2.7
PTB (Braunschweig) 0.8 0.8 0.7 0.9 0.8 0.7 0.4 0.2 1.1 1.1
ROA (San Fernando) 0.8 0.7 1.4 1.2 1.8 0.9 -0.4 0.3 1.1 1.1
SASO (Riyadh) - - - - - - -
SCL (Hong Kong) -13.0 -12.1 -14.4 -8.2 -2.6 -3.1 -0.2 0.3 3.7 3.7
SG (Singapore) -11.1 -2.6 1.3 4.7 10.8 4.5 3.1 0.3 2.7 2.7
SIQ (Ljubljana) 1033.1 1047.9 1055.0 1065.5 1090.3 1092.7 1111.8 0.3 4.1 4.1
SMD (Bruxelles) 0.5 0.7 0.9 1.1 0.8 0.6 -0.0 0.3 4.0 4.0
SMU (Bratislava) -72.1 -136.3 -36.4 -12.1 195.1 164.6 136.0 1.5 6.2 6.4 (2)
SP (Boras) 1.9 1.8 1.7 1.5 1.3 1.2 0.7 0.3 1.1 1.1
SU (Moskva) -0.0 0.0 0.0 -0.0 0.1 -0.2 0.1 0.5 2.2 2.3
TL (Chung-Li) 0.9 1.3 2.1 2.0 1.5 1.7 1.4 0.3 1.9 1.9
TP (Praha) -24.9 -23.6 -24.7 -20.0 -18.2 -17.2 -11.1 0.3 3.0 3.0
UA (Kharkiv) 2.4 -10.1 -3.1 -3.5 1.7 -2.6 -3.2 3.0 7.5 8.1
UAE (Abu Dhabi) -2007.0 -2156.6 -2302.3 -2451.9 -2605.6 -2758.8 -2902.9 0.3 NC -
UME (Gebze-Kocaeli) - -24.7 -27.2 -31.6 -35.7 -40.5 -44.3 0.3 4.0 4.0
USNO (Washington DC) -0.0 -0.2 -0.3 0.2 -0.2 0.1 0.5 0.2 2.3 2.3
UZ (Tashkent) -5.1 -5.8 -7.4 -8.8 -1.8 1.6 0.6 0.3 7.1 7.1
VMI (Ha Noi) -1.9 -4.2 -3.9 5.3 13.9 17.5 8.2 0.7 2.9 3.0
VSL (Delft) 0.9 0.6 0.2 -0.0 -0.1 0.3 0.2 0.3 1.2 1.2
ZA (Pretoria) -14.6 -16.9 -13.3 -6.5 -1.1 1.9 5.1 7.0 3.6 7.9
- Notes on section 1:
(1) NRC : Time step of UTC(NRC) of about +3.5 ns on MJD 60810.
(2) SMU : Apparent time step of UTC(SMU) of about -220 ns on MJD 60810 due to calibration. GPS P3 link used for MJD 60799 to 60809.

2 - Difference between the normalized frequencies of EAL and TAI.
Interval of validity f(EAL)-f(TAI)
Steering correction 60794 - 60824 6.498x10-13 (2025 APR 29 - 2025 MAY 29)
New correction 60824 - 60854 6.498x10-13 (2025 MAY 29 - 2025 JUN 28)
New correction foreseen 60854 - 60884 6.498x10-13 (2025 JUN 28 - 2025 JUL 28)

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 60794 60824 -12.27 8.00 8.00 0.00 0.00 0.13 11.31 PFS/NA T148 8.00 100.0 T448 36 Y (1)
PTB-CS2 60794 60824 -6.90 5.00 12.00 0.00 0.00 0.13 13.00 PFS/NA T148 12.00 100.0 T448 36 Y (1)
METAS-FOC2 60809 60824 -1.53 0.18 1.90 0.15 0.09 0.37 1.95 PFS/NA T371 1.99 90.4 T448 9 Y (2)
IT-Yb1 60799 60824 -0.16 0.00 0.03 0.37 0.02 0.23 0.44 0.19 [1] T383 0.03 14.4 T448 17 Y (3)
NIM5 60794 60824 0.53 0.35 0.68 0.10 0.01 0.17 0.79 PFS/NA T340 1.40 98.5 T448 26 Y (4)
NPL-E3Yb+3 58664 58674 0.97 0.00 0.01 0.63 0.10 0.88 1.08 0.19 [1] [2] 0.01 40.8 N/A 0 Y (5)
NPL-E3Yb+3 59649 59669 0.34 0.01 0.00 0.66 0.05 0.28 0.72 0.19 [1] [2] 0.00 42.6 N/A 0 Y (5)
NPL-E3Yb+3 60004 60034 -0.07 0.00 0.00 0.28 0.06 0.20 0.35 0.19 [1] [2] 0.00 65.7 N/A 0 Y (5)
NPL-E3Yb+3 60599 60614 0.58 0.00 0.00 0.32 0.07 0.37 0.49 0.19 [1] [2] 0.00 62.9 N/A 0 Y (5)
NPL-E3Yb+3 60614 60629 0.40 0.00 0.00 0.10 0.06 0.31 0.33 0.19 [1] [2] 0.00 89.9 N/A 0 Y (5)
NPL-E3Yb+3 60634 60639 0.88 0.00 0.00 0.05 0.08 0.65 0.66 0.19 [1] [2] 0.00 98.2 N/A 0 Y (5)
NPL-E3Yb+3 60694 60704 -0.43 0.00 0.00 0.24 0.11 0.35 0.44 0.19 [1] [2] 0.00 83.0 N/A 0 Y (5)
NPL-E3Yb+3 60704 60719 0.30 0.00 0.00 0.37 0.09 0.46 0.60 0.19 [1] [2] 0.00 56.5 N/A 0 Y (5)
NRC-FCs2 60799 60809 0.09 0.28 0.19 0.29 0.00 0.53 0.69 PFS/NA T448 0.11 55.2 T448 36 Y (6)
NRC-FCs2 60814 60824 -0.63 0.23 0.17 0.16 0.00 0.53 0.62 PFS/NA T448 0.11 84.3 T448 36 Y (6)
NTSC-CsF2 60764 60794 -0.06 0.46 0.37 0.10 0.00 0.13 0.61 PFS/NA T435 0.43 94.7 T447 30 Y (7)
NTSC-CsF2 60794 60824 -0.01 0.47 0.40 0.10 0.00 0.13 0.64 PFS/NA T435 0.43 97.6 T447 30 Y (7)
LNEOP-FORb 60794 60819 0.22 0.25 0.24 0.08 0.00 0.23 0.42 0.34 [1] T328 0.34 78.9 T448 32 Y (8)
LNEOP-SrB 60794 60824 -0.16 0.00 0.05 0.13 0.00 0.20 0.24 0.19 [1] T350 0.05 56.5 T448 1 Y (8)
PTB-CSF2 60794 60824 -0.24 0.11 0.17 0.01 0.00 0.13 0.24 PFS/NA T370 0.17 96.6 T448 41 Y (9)
SU-CsFO2 60794 60824 0.46 0.13 0.22 0.12 0.00 0.33 0.43 PFS/NA T315 0.50 64.9 T448 36 Y (10)

Notes:
(1) Continuously operating as a clock participating to TAI
(2) Report dated 03 JUN. 2025 by CH
(3) Report dated 04 JUN. 2025 by INRIM
(4) Report dated 30 MAY. 2025 by NIM
(5) Report dated 29 APR. 2025 by NPL
(6) Report dated 30 MAY. 2025 by NRC
(7) Report dated 03 JUN. 2025 by NTSC
(8) Report dated 04 JUN. 2025 by LNE-OP
(9) Report dated 04 JUN. 2025 by PTB
(10) Report dated 02 JUN. 2025 by SU
[1] CCTF Recommendation PSFS-2 (2021),22nd meeting (session II online),
available at https://www.bipm.org/en/committees/cc/cctf/22-_2-2021
[2] Tofful A. and al, Metrologia 61 045001 (2024)

Table 2: Estimate of d by the BIPM based on all PSFS measurements identified to be used for TAI steering
over the period MJD 60434-60824, and corresponding uncertainties.

Period of estimation d u
60794-60824 -0.08x10-15 0.14x10-15 (2025 APR 29 - 2025 MAY 29)

4 - Relations of UTC with predictions of UTC broadcast by GNSS.

For this edition of Circular T:

σ_GPS = 5 ns
σ_GLO = 7 ns
σ_GAL = 5 ns
σ_BDS = 5 ns

DATE 0h UTC MJD UTC-bUTC_GNSS /ns
GPS GLO GAL BDS
2025-04-29 60794 1.6 -7.5 4.1 -0.3
2025-04-30 60795 -0.0 -8.2 4.2 -0.6
2025-05-01 60796 0.3 -7.1 4.2 -0.3
2025-05-02 60797 0.4 -7.8 4.5 0.1
2025-05-03 60798 -1.7 -6.6 4.6 -0.6
2025-05-04 60799 -1.4 -5.4 4.2 0.0
2025-05-05 60800 0.8 -0.5 3.3 0.6
2025-05-06 60801 -1.7 -1.8 3.0 -0.1
2025-05-07 60802 -0.6 -1.1 2.1 -0.1
2025-05-08 60803 0.1 0.3 0.4 -0.0
2025-05-09 60804 0.5 0.8 0.3 -0.0
2025-05-10 60805 -0.3 -4.0 0.1 0.4
2025-05-11 60806 -0.1 -8.7 0.1 0.2
2025-05-12 60807 0.3 -8.6 0.3 0.0
2025-05-13 60808 0.3 -6.5 1.6 0.2
2025-05-14 60809 -1.7 -5.3 3.2 -0.7
2025-05-15 60810 0.3 -1.5 3.2 0.3
2025-05-16 60811 1.0 -0.6 3.4 0.9
2025-05-17 60812 -0.6 -0.5 3.3 0.7
2025-05-18 60813 0.2 -0.6 3.2 1.1
2025-05-19 60814 0.6 -2.7 2.1 1.8
2025-05-20 60815 -0.3 -1.8 1.4 1.0
2025-05-21 60816 0.6 -1.8 -0.2 1.1
2025-05-22 60817 1.3 -2.3 -1.1 1.2
2025-05-23 60818 -1.0 -0.1 -1.0 0.7
2025-05-24 60819 0.7 -0.1 -1.0 0.9
2025-05-25 60820 0.5 -0.3 -0.8 1.2
2025-05-26 60821 0.7 -1.5 -1.1 0.6
2025-05-27 60822 1.2 -2.5 -1.3 0.3
2025-05-28 60823 0.2 -3.3 2.5 0.6
2025-05-29 60824 -0.7 -3.5 2.1 1.1

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
AGGO/PTB GPS P3 TC_2 /PT13 1014-2021 / 1001-2022 0.7 3.0 1.6
AOS /PTB GPSPPP AO_5 /PT13 1012-2024 / 1001-2022 0.3 2.7 1.0
APL /PTB GPSPPP AP04 /PT13 NC / 1001-2022 0.3 NC
AUS /PTB GPSPPP AU04 /PT13 1015-2021 / 1001-2022 0.3 3.0 1.6
BEV /PTB GPSPPP BE1_ /PT13 1016-2021 / 1001-2022 0.3 3.0 1.6
BFKH/PTB GPS P3 MK02 /PT13 2002-2022 / 1001-2022 0.7 7.1 1.4
BIM /PTB GPSPPP BM51 /PT13 1016-2023 / 1001-2022 0.3 2.7 1.0
BIRM/PTB GPSPPP BI41 /PT13 1016-2018 / 1001-2022 0.3 3.5 2.5
BSJ /PTB GPS MC JM__ /PT13 2001-2024 / 1001-2022 7.0 7.1 1.0
BY /PTB GPS MC BY46 /PT13 1020-2021 / 1001-2022 1.5 3.2 1.6
CAO /PTB GPS P3 CA__ /PT13 NC / 1001-2022 0.7 NC
CNES/PTB GPSPPP CS24 /PT13 1012-2021 / 1001-2022 0.3 3.1 1.8
CNM /PTB GPS MC CN00 /PT13 NA_Al / 1001-2022 3.0 4.4 3.0 -27.3 0804
CNMP/PTB GPSPPP MP1_ /PT13 1011-2017 / 1001-2022 0.3 5.5 2.9
DFM /PTB GPSPPP DK01 /PT13 1017-2022 / 1001-2022 0.3 2.8 1.2
DFNT/PTB GPS P3 DN__ /PT13 1015-2024 / 1001-2022 0.7 2.7 1.0
DLR /PTB GPS P3 DL11 /PT13 1016-2024 / 1001-2022 0.7 2.7 1.0
DMDM/PTB GPSPPP ZM01 /PT13 2002-2018 / 1001-2022 0.3 7.5 2.6
DTAG/PTB GPSPPP DT05 /PT13 1012-2019 / 1001-2022 0.3 3.5 2.3
ESA /PTB GPSPPP ES07 /PT13 1017-2024 / 1001-2022 0.3 2.7 1.0
HKO /PTB GPSPPP HKO1 /PT13 1011-2018 / 1001-2022 0.3 3.7 2.7
IBM /PTB GPS MC BO__ /PT13 2005-2016 / 1001-2022 4.0 7.6 3.0
ICE /PTB GPSPPP CE__ /PT13 2001-2023 / 1001-2022 0.3 7.1 1.1
IDN /PTB GPSPPP KI03 /PT13 NC / 1001-2022 0.3 NC
IFAG/PTB GPSPPP IF20 /PT13 1016-2024 / 1001-2022 0.3 2.7 1.0
IFZG/PTB GPSPPP HR01 /PT13 1016-2023 / 1001-2022 0.3 2.7 1.0
IGNA/PTB NL
IMBH/PTB GPSPPP BH02 /PT13 1013-2022 / 1001-2022 0.3 2.9 1.4
INCP/PTB GPS MC CP__ /PT13 NC / 1001-2022 5.0 NC
INM /PTB GPS MC IC__ /PT13 NC / 1001-2022 3.0 NC
INPL/PTB GPSPPP IL06 /PT13 2003-2016 / 1001-2022 0.3 7.6 3.1
INTI/PTB GPS P3 INTI /PT13 1014-2021 / 1001-2022 0.7 3.3 1.5
INXE/PTB GPSPPP NXRA /PT13 1012-2020 / 1001-2022 0.3 3.3 2.2
IPQ /PTB GPSPPP IP05 /PT13 1017-2021 / 1001-2022 0.7 3.0 1.7
JATC/PTB GPSPPP JA02 /PT13 1201-2018 / 1001-2022 0.3 3.7 2.6
JV /PTB GPSPPP JV02 /PT13 1101-2017 / 1001-2022 0.3 4.9 2.8
KRIS/PTB GPSPPP KRP1 /PT13 1015-2021 / 1001-2022 0.3 3.0 1.7
KZ /PTB GPS P3 KZ04 /PT13 1202-2021 / 1001-2022 0.7 4.3 1.6
LRTE/PTB GPSPPP LRR2 /PT13 NC / 1001-2022 0.4 NC
LT /PTB GPSPPP LT03 /PT13 1020-2023 / 1001-2022 0.3 2.7 1.0
LUX /PTB GPSPPP LU01 /PT13 1014-2023 / 1001-2022 0.3 2.7 1.1
MASM/PTB NL
MBM /PTB GPSPPP ME01 /PT13 1021-2021 / 1001-2022 0.3 2.9 1.5
MIKE/PTB GPSPPP MI04 /PT13 1019-2023 / 1001-2022 0.3 2.7 1.0
MSL /PTB GPS P3 MS01 /PT13 1015-2021 / 1001-2022 0.7 3.0 1.6
MTC /PTB NL
NAO /PTB GPS MC NAT2 /PT13 1012-2022 / 1001-2022 2.0 3.8 1.6
NICT/PTB GPSPPP NC5S /PT13 1001-2022 / 1001-2022 0.3 1.9 1.2
NIM /PTB GPSPPP IM02 /PT13 1001-2022 / 1001-2022 0.3 1.9 1.2
NIMB/PTB NL
NIMT/PTB GPSPPP MTTN /PT13 1016-2022 / 1001-2022 0.3 3.0 1.2
NIS /PTB GPS P3 IS_5 /PT13 2001-2021 / 1001-2022 0.7 7.2 1.8
NMIJ/PTB GPSPPP NM0D /PT13 1015-2022 / 1001-2022 0.3 2.9 1.4
NMLS/PTB GPSPPP LSM2 /PT13 1011-2023 / 1001-2022 0.3 2.7 1.1
NPLI/PTB GPSPPP LI2P /PT13 1011-2024 / 1001-2022 0.3 2.7 1.0
NRC /PTB GPSPPP NRCC /PT13 1015-2023 / 1001-2022 0.3 2.7 1.0
NRL /PTB GPSPPP RL5B /PT13 1201-2024 / 1001-2022 0.3 2.7 1.0
NSAI/PTB GPSPPP IE01 /PT13 2022-2019 / 1001-2022 0.3 7.4 2.3
NTSC/PTB GPSPPP NT05 /PT13 1016-2018 / 1001-2022 0.3 3.5 2.5
ONBA/PTB GPS MC ON__ /PT13 1014-2021 / 1001-2022 2.0 3.3 1.6
ONRJ/PTB GPSPPP RJ04 /PT13 1012-2020 / 1001-2022 0.3 3.2 2.1
ORB /PTB GPSPPP OR5Z /PT13 1017-2023 / 1001-2022 0.3 2.7 1.0
PL /PTB GPSPPP PL_5 /PT13 1012-2024 / 1001-2022 0.3 2.7 1.0
SASO/PTB NL
SCL /PTB GPSPPP SC05 /PT13 1011-2018 / 1001-2022 0.3 3.7 2.7
SG /PTB GPSPPP SG02 /PT13 1018-2023 / 1001-2022 0.3 2.7 1.0
SIQ /PTB GPSPPP SI01 /PT13 1013-2019 / 1001-2022 0.3 4.1 2.2
SMD /PTB GPSPPP SD31 /PT13 NA_Al / 1001-2022 0.3 4.0 2.9 1.0 2501
SMU /PTB GPS MC SM00 /PT13 1202-2024 / 1001-2022 1.5 6.2 1.0
SU /PTB GPS P3 SU52 /PT13 1001-2020 / 1001-2022 0.7 2.2 1.6
TL /PTB GPSPPP TLT5 /PT13 1001-2022 / 1001-2022 0.3 1.9 1.1
TP /PTB GPSPPP TP01 /PT13 1013-2021 / 1001-2022 0.3 3.0 1.7
UA /PTB GPS MC UA05 /PT13 2003-2018 / 1001-2022 3.0 7.5 2.6
UAE /PTB GPSPPP AE01 /PT13 NC / 1001-2022 0.3 NC
UME /PTB GPSPPP UM01 /PT13 1011-2016 / 1001-2022 0.3 4.0 3.2
UZ /PTB GPSPPP UZ__ /PT13 2005-2022 / 1001-2022 0.3 7.1 1.3
VMI /PTB GPS P3 VM12 /PT13 1011-2022 / 1001-2022 0.7 2.9 1.4
ZA /PTB GPS P3 ZA02 /PT13 1018-2018 / 1001-2022 7.0 3.6 2.6
Link Type Equipment Cal_ID uStb/ns uCal/ns uAg/ns Al/ns YYMM
CH /PTB TWGPPP CH01 /PTB05 0623-2024 0.3 1.1 0.3
IT /PTB TWGPPP IT01 /PTB05 0622-2024 0.3 1.1 0.3
NIST/PTB TWGPPP NIST01/PTB05 0593-2024 0.3 2.0 0.0
NPL /PTB TWSTFT NPL02 /PTB05 0620-2024 0.5 1.1 0.3
OP /PTB TWSDRR OP51 /PTB55 0624-2024 0.3 1.1 0.3
ROA /PTB TWGPPP ROA01 /PTB05 0618-2024 0.3 1.1 0.3
SP /PTB TWGPPP SP01 /PTB05 0621-2024 0.3 1.1 0.3
USNO/PTB TWGPPP USNO01/PTB05 0534-2021 0.3 2.3 2.1
VSL /PTB TWGPPP VSL01 /PTB05 0616-2024 0.3 1.2 0.3