groundhog.markets credits: every provider's full line. Keep the credit when you repeat numbers; reuse follows each source's licence.
noaa: Source: NOAA/NWS (US Government work, public domain); NBM/MOS/GFS/AIGFS/HRRR/WPC/MRMS: NOAA NCEP/MDL/NSSL; modified by groundhog (point extraction, local-day max/min, precipitation totals and chances); not endorsed by NOAA
metno: Data from MET Norway (Locationforecast 2.0), CC BY 4.0 https://creativecommons.org/licenses/by/4.0/ ; modified: local-day max/min, precipitation totals and chances
dwd: Quelle: Deutscher Wetterdienst (MOSMIX, CC BY 4.0; modified: local-day max/min, precipitation totals and chances)
eccc: Data Source: Environment and Climate Change Canada (NAEFS: CMC GEPS members) and NOAA NCEP (GEFS members); modified: member daily max/min quantiles, precipitation totals and chances
ecmwf: Based on data and products of the European Centre for Medium-Range Weather Forecasts (ECMWF); ENS read from dynamical.org's archive. CC BY 4.0 https://creativecommons.org/licenses/by/4.0/ ; modified by groundhog (point extraction, local-day max/min, ensemble quantiles, precipitation totals and chances). ECMWF does not accept any liability whatsoever for any error or omission in the data, their availability, or for any loss or damage arising from their use.
dyn_gefs: NOAA NWS NCEP GEFS data processed by dynamical.org from NOAA Open Data Dissemination archives. CC BY 4.0 https://creativecommons.org/licenses/by/4.0/ ; modified by groundhog: member precipitation totals, chances and quantiles at points
smn: Fuente: Servicio Meteorológico Nacional (SMN/CONAGUA), pronóstico por municipio. Not an official SMN channel.
awc_us: Source: NOAA/NWS Aviation Weather Center (public domain)
awc_intl: METAR via NOAA Aviation Weather Center; originated by national services
acis: Source: NOAA Regional Climate Centers, Applied Climate Information System (ACIS; US Government work, public domain)
hko: Source: Hong Kong Observatory open data via DATA.GOV.HK (attribution required by the DATA.GOV.HK terms of use)
ukmo: Contains public sector information licensed under the Open Government Licence v3.0 (Met Office historic station data, Heathrow)
meteoalarm: Source: MeteoAlarm (EUMETNET), warnings issued by national services; CC BY 4.0; text unaltered
geonames: Place names: GeoNames (geonames.org), CC BY 4.0
venues: Market rules and results: Kalshi, Polymarket (linked; rules paraphrased by groundhog). Not affiliated with Kalshi or Polymarket.