Co2Observation(Co2Observation)
One full-row (year, 79 columns) country-year observation.Fields beyond year are dynamic (one key per CSV column). Present nulls
correspond to columns with no data for that country-year. Complete schema
is exposed via /api/v1/environment/co2/codebook.
{
"year": 2022,
"property1": "string",
"property2": "string"
}