{
  "id": "UN1208",
  "name": "year (tropical)",
  "ml_name": "ip_year_{tropical}",
  "symbol": "tropical_year",
  "reference": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8#Y"
}