BIPM Time Dept database
BIPM Time Department Data Base
List of reference frequencies available

Example of API requests available:



SpecieFrequencyURL of query
114Cd465 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=114Cd|465+THz&date=2024-11-25
114Cd589 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=114Cd|589+THz&date=2024-11-25
114Cd624 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=114Cd|624+THz&date=2024-11-25
114Cd641 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=114Cd|641+THz&date=2024-11-25
115In+1267 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=115In\%2B|1267+THz&date=2024-11-25
127I2468 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=127I2|468+THz&date=2024-11-25
127I2474 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=127I2|474+THz&date=2024-11-25
127I2490 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=127I2|490+THz&date=2024-11-25
127I2520 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=127I2|520+THz&date=2024-11-25
127I2552 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=127I2|552+THz&date=2024-11-25
127I2563 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=127I2|563+THz&date=2024-11-25
127I2564 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=127I2|564+THz&date=2024-11-25
127I2582 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=127I2|582+THz&date=2024-11-25
13C2H2194 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=13C2H2|194+THz&date=2024-11-25
171Yb518 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=171Yb|518+THz&date=2024-11-25
171Yb+642 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=171Yb\%2B|642+THz&date=2024-11-25
171Yb+688 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=171Yb\%2B|688+THz&date=2024-11-25
198Hg518 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=198Hg|518+THz&date=2024-11-25
198Hg519 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=198Hg|519+THz&date=2024-11-25
198Hg549 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=198Hg|549+THz&date=2024-11-25
198Hg688 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=198Hg|688+THz&date=2024-11-25
199Hg1129 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=199Hg|1129+THz&date=2024-11-25
199Hg+1065 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=199Hg\%2B|1065+THz&date=2024-11-25
27Al+1121 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=27Al\%2B|1121+THz&date=2024-11-25
40Ca456 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=40Ca|456+THz&date=2024-11-25
40Ca+411 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=40Ca\%2B|411+THz&date=2024-11-25
85Rb385 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=85Rb|385+THz&date=2024-11-25
86Kr464 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=86Kr|464+THz&date=2024-11-25
86Kr467 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=86Kr|467+THz&date=2024-11-25
86Kr495 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=86Kr|495+THz&date=2024-11-25
86Kr530 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=86Kr|530+THz&date=2024-11-25
86Kr666 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=86Kr|666+THz&date=2024-11-25
87Rb384 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=87Rb|384+THz&date=2024-11-25
87Rb6.835 GHzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=87Rb|6.835+GHz&date=2024-11-25
87Sr429 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=87Sr|429+THz&date=2024-11-25
88Sr429 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=88Sr|429+THz&date=2024-11-25
88Sr+445 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=88Sr\%2B|445+THz&date=2024-11-25
CH488.4 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=CH4|88.4+THz&date=2024-11-25
CH4_unresolve88.4 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=CH4_unresolve|88.4+THz&date=2024-11-25
H1233 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=H|1233+THz&date=2024-11-25
HeNe474 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=HeNe|474+THz&date=2024-11-25
OsO429.1 THzhttps://webtai.bipm.org/api/ccl-cctf/v1.0/xml_auto.html?target=OsO4|29.1+THz&date=2024-11-25
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