CIRCULAR T 388 ISSN 1143-1393
2020 MAY 07, 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_v0.2.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 2020 0h UTC MAR 31 APR 5 APR 10 APR 15 APR 20 APR 25 APR 30 Uncertainty/ns Notes
MJD 58939 58944 58949 58954 58959 58964 58969 uA uB u
Laboratory k [UTC-UTC(k)]/ns
AOS (Borowiec) 6.2 4.3 2.6 0.4 -1.8 -2.9 -2.6 0.3 2.9 2.9 (1)
APL (Laurel) 2.8 3.4 2.5 2.7 3.4 3.7 3.5 0.3 20.0 20.0
AUS (Sydney) -394.5 -398.7 -408.4 -410.8 -405.6 -409.7 -409.2 0.3 6.6 6.6
BEV (Wien) 6.2 7.2 10.9 18.7 20.1 23.6 25.8 0.3 3.5 3.6
BFKH (Budapest) 607.9 636.9 659.0 678.5 696.6 720.4 746.3 1.5 20.0 20.1
BIM (Sofiya) 12608.6 12629.5 12652.5 12695.9 12705.4 12717.8 12727.5 0.7 7.1 7.2
BIRM (Beijing) 2.6 -10.8 -10.9 -13.3 -12.9 -8.6 -6.5 0.3 2.7 2.7
BOM (Skopje) -3371.0 -3395.1 -3420.1 -3432.4 -3447.3 -3472.0 -3484.7 0.5 3.5 3.6
BY (Minsk) -1.3 -0.7 -0.2 -0.1 0.3 0.8 1.2 1.5 12.2 12.3
CAO (Cagliari) -18571.0 -18677.1 -18784.0 -18895.5 -19002.8 -19115.9 -19232.8 1.5 20.0 20.0
CH (Bern-Wabern) -0.4 -1.3 -1.0 0.4 -0.1 -1.2 -2.1 0.3 2.3 2.4
CNES (Toulouse) 4.0 3.4 2.3 1.1 1.4 2.5 5.2 0.3 2.9 2.9
CNM (Queretaro) 5.3 8.0 1.6 2.6 7.3 4.5 3.4 2.5 11.2 11.5
CNMP (Panama) 11.0 19.7 -7.7 -17.0 -24.6 -36.8 - 0.7 7.5 7.6
DFNT (Tunis) 1417.0 1657.0 1887.3 2130.7 2364.3 2602.3 2827.0 0.7 20.0 20.0
DLR (Oberpfaffenhofen) 898.0 785.6 662.9 542.5 428.1 - 183.5 0.7 3.5 3.6
DMDM (Belgrade) -12.9 -11.7 -19.1 -17.8 -25.1 -30.1 -22.7 0.3 3.5 3.6
DTAG (Frankfurt/M) 8.9 8.7 9.6 10.1 8.6 7.5 6.6 0.3 2.8 2.8
EIM (Thessaloniki) 8.5 5.1 -0.2 5.9 0.7 7.6 9.7 4.0 11.2 11.9
ESTC (Noordwijk) 1.3 0.7 0.4 -0.2 -0.1 0.4 -1.2 0.3 3.2 3.3
HKO (Hong Kong) 298.2 303.2 310.9 321.6 324.4 334.2 339.2 0.4 3.0 3.0
ICE (San Jose) 12.6 6.9 3.5 -17.3 -17.1 -28.6 -33.6 3.0 20.0 20.2
IDN (Serpong-Tangerang) 1891.0 1889.3 1900.3 1908.8 1920.0 1944.8 1966.3 0.3 2.8 2.8
IFAG (Wettzell) -878.7 -886.7 -881.3 -873.5 -864.1 -850.1 -841.2 0.3 3.2 3.2
IGNA (Buenos Aires) - - - - - - -
IMBH (Sarajevo) 1.8 2.3 -0.3 0.0 1.8 2.1 -1.9 0.4 2.7 2.7
INCP (Lima) - - - - - - -
INM (Bogota D.C.) -19.0 -21.0 -23.7 -29.7 -30.6 -27.6 -18.9 1.5 20.0 20.1
INPL (Jerusalem) -3.6 -3.1 -11.2 -16.8 -32.5 -44.2 -43.4 0.3 7.4 7.4
INTI (Buenos Aires) 61.4 47.8 56.5 61.0 47.4 47.6 28.8 2.5 20.0 20.2
INXE (Rio de Janeiro) -0.3 5.7 5.2 3.0 -1.4 -9.4 -21.1 0.3 20.0 20.0
IPQ (Caparica) 201.9 202.8 199.0 198.1 207.3 211.5 212.1 0.5 20.0 20.0
IT (Torino) 0.9 -0.2 -1.9 -3.2 -3.1 -4.2 -3.7 0.3 1.1 1.2
JATC (Lintong) -2.2 -3.3 -3.4 -5.1 -4.3 -2.9 -1.5 0.3 2.9 2.9
JV (Kjeller) 38.2 41.1 33.6 28.3 10.7 11.3 15.0 0.3 4.3 4.3
KRIS (Daejeon) 21.1 21.6 22.8 22.3 22.6 23.9 25.2 0.3 3.2 3.2
LRTE (Sao Carlos) 9.7 11.6 8.1 3.8 0.8 3.4 1.4 0.3 20.0 20.0
LT (Vilnius) 1033.2 1053.6 1023.1 1006.8 997.3 982.3 971.1 0.3 2.9 2.9
LUX (Belvaux) -6.4 -2.4 -2.6 -1.6 0.9 -3.7 -7.7 0.3 3.1 3.1
MASM (Bayanzurkh) -150.0 -177.9 -201.0 -229.8 -255.9 -283.0 -314.8 0.4 2.8 2.8
MBM (Podgorica) 561.1 587.5 605.9 623.8 633.9 - - 0.7 20.0 20.0
MIKE (Espoo) 2.7 3.6 4.4 5.3 4.7 4.7 4.0 0.3 2.6 2.6
MSL (Lower Hutt) -43.2 -57.9 -45.4 -42.9 -39.0 -51.3 -42.0 1.5 20.0 20.1
NAO (Mizusawa) 15.0 23.1 27.7 28.7 32.5 33.2 37.1 2.0 20.0 20.1
NICT (Tokyo) -14.1 -14.9 -15.3 -15.0 -13.9 -12.1 -11.4 0.3 2.2 2.2
NIM (Beijing) 1.7 4.8 5.2 4.9 4.3 4.0 3.6 0.3 2.0 2.1
NIMB (Bucharest) 8875.5 8920.3 8965.0 9003.9 9047.3 9088.5 9133.5 0.4 7.6 7.6
NIMT (Pathumthani) - - - - - - -
NIS (Cairo) 5.6 13.7 13.1 9.4 8.8 8.0 14.8 0.7 20.0 20.0
NIST (Boulder) -1.0 -0.9 -0.7 -1.1 -1.1 -1.3 -1.7 0.3 1.9 1.9
NMIJ (Tsukuba) 2.6 2.8 3.1 2.8 3.0 2.2 2.7 0.3 3.7 3.7
NMLS (Sepang) -2331.2 -2388.5 -2447.9 -2502.9 -2552.2 -2602.3 -2646.2 1.5 4.3 4.6
NPL (Teddington) 3.0 2.5 1.9 2.0 1.8 1.4 0.2 0.3 2.6 2.7
NPLI (New-Delhi) -5.3 -6.5 -7.2 -6.2 -4.8 -2.8 -1.1 0.3 2.9 2.9
NRC (Ottawa) -46.3 -47.0 -48.3 -45.4 -40.8 -35.1 -26.8 0.3 3.1 3.1
NRL (Washington DC) 5.8 6.9 6.8 1.7 4.5 6.9 5.5 0.3 20.0 20.0
NTSC (Lintong) -2.7 -4.7 -3.6 -4.2 -2.3 -0.8 -0.4 0.3 2.8 2.8
ONBA (Buenos Aires) 418.1 413.2 419.8 425.4 437.6 445.4 453.5 2.0 11.2 11.4
ONRJ (Rio de Janeiro) -3.5 -1.0 2.1 -1.8 -0.8 -3.2 -0.7 0.4 20.0 20.0
OP (Paris) -0.6 -0.4 -0.3 -0.4 -0.3 -0.4 -0.4 0.3 1.1 1.2
ORB (Bruxelles) 1.2 1.7 2.3 2.7 3.0 1.9 1.4 0.3 3.2 3.2
PL (Warszawa) 7.6 4.4 1.7 -0.3 0.5 1.3 2.4 0.3 2.8 2.9
PTB (Braunschweig) -0.1 -0.1 -0.1 -0.1 -0.1 0.2 0.2 0.1 0.6 0.6
ROA (San Fernando) -3.6 -3.4 -3.6 -3.4 -3.1 -2.7 -2.5 0.3 1.1 1.2
SASO (Riyadh) -1238.3 -1251.3 -1258.6 -1276.0 -1288.2 -1294.0 -1308.9 0.5 3.1 3.1
SCL (Hong Kong) 37.2 38.7 33.9 46.0 44.0 32.8 33.8 1.0 3.0 3.1
SG (Singapore) 14.7 15.9 18.1 17.2 15.3 -7.6 -3.5 0.7 2.8 2.9
SIQ (Ljubljana) -3.4 8.0 -22.4 -8.2 -7.5 10.6 20.7 0.3 3.6 3.7
SL (Colombo) - - - - - - -
SMD (Bruxelles) -13.5 -9.6 -3.2 -6.4 -2.5 -5.3 -2.2 0.3 3.2 3.3
SMU (Bratislava) -100.4 -95.3 -85.0 -87.7 -97.8 - - 1.5 12.2 12.3
SP (Boras) 2.4 1.9 1.5 1.5 1.4 1.8 2.2 0.3 1.1 1.1
SU (Moskva) 0.2 0.2 0.2 0.5 0.1 0.0 0.3 0.7 2.1 2.2
TL (Chung-Li) -0.3 -0.3 -0.8 -1.0 -1.6 -1.7 -1.3 0.3 2.2 2.2
TP (Praha) 21.6 14.4 5.3 -3.5 -9.3 -5.4 1.4 0.3 2.7 2.7
UA (Kharkov) 4.1 7.3 7.3 6.0 -6.5 -13.1 -11.1 1.5 9.4 9.5
UAE (Abu Dhabi) 14.3 10.2 13.8 22.0 17.9 21.5 16.7 4.0 8.9 9.8
UME (Gebze-Kocaeli) 4.6 5.1 4.2 3.5 3.1 2.5 2.8 0.3 3.5 3.6
USNO (Washington DC) 1.3 1.9 2.0 1.7 1.8 1.4 1.4 0.2 1.3 1.3
VMI (Ha Noi) 9.0 -2.1 -59.0 -65.7 -64.5 -64.4 -50.8 0.3 7.1 7.1 (2)
VSL (Delft) 4.3 -2.9 1.9 9.3 2.6 1.2 2.3 0.3 1.7 1.7
ZA (Pretoria) 1.2 1.1 2.4 -0.2 -2.9 -1.9 -2.2 0.3 2.7 2.7
- Notes on section 1:
(1) AOS : Time step of about -5 ns due to calibration between MJD 58939 and 58944.
(2) VMI : Apparent time step of UTC(VMI) of about +50 ns on MJD 58945.

2 - Difference between the normalized frequencies of EAL and TAI.
Interval of validity f(EAL)-f(TAI)
Steering correction 58939 - 58969 6.493x10-13 (2020 MAR 31 - 2020 APR 30)
New correction 58969 - 58999 6.493x10-13 (2020 APR 30 - 2020 MAY 30)
New correction foreseen 58999 - 59029 6.493x10-13 (2020 MAY 30 - 2020 JUN 29)

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 ul/lab ul/Tai u uSrep Ref(uS) Ref(uB) uB(Ref) Steer Note
Estimation
PTB-CS1 58939 58969 2.80 8.00 8.00 0.00 0.07 11.31 PFS/NA T148 8. Y (1)
PTB-CS2 58939 58969 -6.04 5.00 12.00 0.00 0.07 13.00 PFS/NA T148 12. Y (1)
METAS-FOC2 58939 58969 -1.61 0.06 1.42 0.04 0.20 1.44 PFS/NA T371 1.99 Y (2)
IT-CsF2 58899 58914 -0.79 0.64 0.17 0.36 0.37 0.84 PFS/NA T318 0.19 Y (3)
IT-CsF2 58919 58934 0.05 0.71 0.17 0.51 0.37 0.96 PFS/NA T318 0.19 Y (3)
IT-CsF2 58939 58954 0.03 0.64 0.17 0.18 0.37 0.78 PFS/NA T318 0.19 Y (3)
SYRTE-FO1 58939 58969 -0.72 0.15 0.31 0.06 0.20 0.40 PFS/NA T301 0.37 Y (4)
SYRTE-FO2 58939 58969 -0.39 0.15 0.22 0.06 0.20 0.34 PFS/NA T301 0.23 Y (4)
SYRTE-FORb 58939 58969 -0.15 0.20 0.26 0.13 0.20 0.40 0.6 [1] T328 0.34 Y (4)
PTB-CSF1 58939 58969 -0.47 0.07 0.30 0.02 0.07 0.32 PFS/NA T371 0.28 Y (5)
PTB-CSF2 58939 58969 -0.29 0.11 0.17 0.01 0.07 0.21 PFS/NA T370 0.17 Y (5)

Notes:
(1) Continuously operating as a clock participating to TAI
(2) Report 06 MAY 2020 by CH
(3) Report 05 MAY 2020 by INRIM
(4) Report 04 MAY 2020 by LNE-SYRTE
(5) Report 30 APR. 2020 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.

Table 2: Estimate of d by the BIPM based on all PSFS measurements identified to be used for TAI steering
over the period MJD58579-58969, and corresponding uncertainties.

Period of estimation d u
58939-58969 -0.40x10-15 0.14x10-15 (2020 MAR 31 - 2020 APR 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'= 0.9 ns, σ1'= 6.7 ns

2020 0h UTC MJD C0'/ns N0 C1'/ns N1'
MAR 31 58939 3.5 89 30.2 88
APR 1 58940 6.1 89 35.5 81
APR 2 58941 4.0 88 34.3 89
APR 3 58942 2.6 90 30.4 83
APR 4 58943 4.9 89 28.0 88
APR 5 58944 3.8 89 26.5 80
APR 6 58945 2.7 89 26.6 88
APR 7 58946 3.0 90 22.7 85
APR 8 58947 3.0 89 19.1 86
APR 9 58948 0.5 89 20.9 85
APR 10 58949 3.5 73 24.5 89
APR 11 58950 6.6 85 25.9 79
APR 12 58951 3.7 89 24.4 86
APR 13 58952 4.3 89 24.6 85
APR 14 58953 2.3 89 25.3 88
APR 15 58954 3.0 90 24.7 83
APR 16 58955 4.0 89 25.0 80
APR 17 58956 3.7 89 25.8 88
APR 18 58957 4.5 89 26.1 88
APR 19 58958 3.0 90 25.3 86
APR 20 58959 2.8 89 25.7 87
APR 21 58960 3.7 89 27.0 89
APR 22 58961 3.9 89 27.4 89
APR 23 58962 3.6 90 26.9 87
APR 24 58963 3.8 89 27.0 81
APR 25 58964 3.0 89 28.0 86
APR 26 58965 3.3 89 27.1 89
APR 27 58966 4.0 90 25.3 87
APR 28 58967 2.9 89 23.5 89
APR 29 58968 3.0 89 24.9 82
APR 30 58969 3.5 89 26.9 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 AP02 /PT13 NC / 1001-2018 0.3 20.0
AUS /PTB GPSPPP AU04 /PT13 1002-2010 / 1001-2018 0.3 6.6 4.3
BEV /PTB GPSPPP BE1_ /PT13 1012-2016 / 1001-2018 0.3 3.5 2.4
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 0.8
BIRM/PTB GPSPPP BI41 /PT13 1016-2018 / 1001-2018 0.3 2.6 0.8
BOM /PTB GPSPPP MABM /PT13 1011-2016 / 1001-2018 0.5 3.5 2.4
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 1.3
CNM /PTB GPS MC CN00 /PT13 NA_Al / 1001-2018 2.5 11.2 10.0 -27.3 0804
CNMP/PTB GPS P3 MP1_ /PT13 NA_Al / 1001-2018 0.7 7.5 2.7 41.7 1807
DFNT/PTB GPS P3 DN__ /PT13 NC_Al / 1001-2018 0.7 20.0 10.3 1507
DLR /PTB GPS P3 DL05 /PT13 1012-2016 / 1001-2018 0.7 3.5 2.5
DMDM/PTB GPSPPP ZM68 /PT13 1011-2016 / 1001-2018 0.3 3.5 2.4
DTAG/PTB GPSPPP DT05 /PT13 1012-2019 / 1001-2018 0.3 2.7 0.8
EIM /PTB GPS MC EI__ /PT13 NA / 4.0 11.2 10.0
ESTC/PTB GPSPPP ES04 /PT13 1019-2016 / 1001-2018 0.3 3.2 2.1
HKO /PTB GPSPPP HKO2 /PT13 1011-2018 / 1001-2018 0.4 2.9 1.5
ICE /PTB GPS MC CE1_ /PT13 NC / 1001-2018 3.0 20.0
IDN /PTB GPSPPP KI01 /PT13 1017-2018 / 1001-2018 0.3 2.7 1.0
IFAG/PTB GPSPPP IF19 /PT13 1016-2017 / 1001-2018 0.3 3.2 1.8
IGNA/PTB NL
IMBH/PTB GPSPPP BH02 /PT13 1011-2019 / 1001-2018 0.4 2.6 0.8
INCP/PTB NL
INM /PTB GPS MC IC__ /PT13 NC / 1001-2018 1.5 20.0
INPL/PTB GPSPPP IL06 /PT13 2003-2016 / 1001-2018 0.3 7.4 2.3
INTI/PTB GPS MC IN__ /PT13 NC / 1001-2018 2.5 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 1.6
KRIS/PTB GPSPPP KRG1 /PT13 1017-2017 / 1001-2018 0.3 3.2 2.0
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 3.0 1.6
MASM/PTB GPSPPP MN__ /PT13 1019-2018 / 1001-2018 0.4 2.7 1.1
MBM /PTB GPS P3 ME01 /PT13 NC / 1001-2018 0.7 20.0
MIKE/PTB GPSPPP MI04 /PT13 1016-2019 / 1001-2018 0.3 2.6 0.8
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 2.2 1.3
NIM /PTB GPSPPP IM06 /PT13 1001-2018 / 1001-2018 0.3 2.1 1.2
NIMB/PTB GPSPPP MB02 /PT13 NA_Al / 1001-2018 0.4 7.6 2.9 32.2 1611
NIMT/PTB 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 3.7 3.3
NMLS/PTB GPS MC LSM1 /PT13 1013-2017 / 1001-2018 1.5 4.3 3.3
NPL /PTB GPSPPP NPL1 /PT13 1015-2019 / 1001-2018 0.3 2.6 0.8
NPLI/PTB GPSPPP LI2P /PT13 1013-2018 / 1001-2018 0.3 2.9 1.5
NRC /PTB GPSPPP NRC4 /PT13 1019-2017 / 1001-2018 0.3 3.1 1.8
NRL /PTB GPSPPP RL2_ /PT13 NC / 1001-2018 0.3 20.0
NTSC/PTB GPSPPP NTP1 /PT13 1001-2016 / 1001-2018 0.3 2.9 2.3
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 1018-2017 / 1001-2018 0.3 3.2 2.1
PL /PTB GPSPPP PL_3 /PT13 1014-2018 / 1001-2018 0.3 2.8 1.3
SASO/PTB GPSPPP SAS0 /PT13 1020-2017 / 1001-2018 0.5 3.0 1.7
SCL /PTB GPS P3 SC05 /PT13 1011-2018 / 1001-2018 1.0 2.9 1.5
SG /PTB GPS P3 SG02 /PT13 1019-2018 / 1001-2018 0.7 2.7 1.0
SIQ /PTB GPSPPP SI01 /PT13 1013-2019 / 1001-2018 0.3 3.6 0.8
SL /PTB NL
SMD /PTB GPSPPP SD01 /PT13 1014-2017 / 1001-2018 0.3 3.2 2.0
SMU /PTB GPS MC SM00 /PT13 NA_Al / 1001-2018 1.5 12.2 10.0 57.8 0908
SU /PTB GPS P3 SU31 /PT13 1001-2018 / 1001-2018 0.8 2.2 1.4
TL /PTB GPSPPP TLT1 /PT13 1001-2018 / 1001-2018 0.3 2.2 1.5
TP /PTB GPSPPP TP02 /PT13 1015-2019 / 1001-2018 0.3 2.6 0.8
UA /PTB GPS MC UA04 /PT13 2003-2011 / 1001-2018 1.5 9.4 6.3
UAE /PTB GPS MC AE__ /PT13 2001-2016 / 1001-2018 4.0 8.9 5.5
UME /PTB GPSPPP UM01 /PT13 1011-2016 / 1001-2018 0.3 3.5 2.5
VMI /PTB GPSPPP VM02 /PT13 2001-2019 / 1001-2018 0.3 7.1 0.8
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 2.3 1.8
IT /PTB TWGPPP IT02 /PTB05 0502-2019 0.3 1.0 0.1
NIST/PTB TWGPPP NIST01/PTB05 0393-2015 0.3 1.9 1.4
OP /PTB TWSDRR OP51 /PTB55 0517-2020 0.3 1.0 0.0
ROA /PTB TWGPPP ROA01 /PTB05 0504-2019 0.3 1.0 0.0
SP /PTB TWGPPP SP01 /PTB05 0496-2019 0.3 1.0 0.1
USNO/PTB TWGPPP USNO01/PTB05 0395-2016 0.3 1.6 1.0
VSL /PTB TWGPPP VSL01 /PTB05 0295-2015 0.3 1.6 1.1