NASA POWER
Completed daily gridded weather for the Prague reference grid and regional comparison desks.
Open primary sourceEvery measurement keeps its paperwork.
Field Exchange separates observation, index calculation, market simulation and editorial interpretation. The Field Lab exposes dates, units, geography, gaps and formulas so a strange market can still be an inspectable one.
GFZ Potsdam
Kp, Ap and F10.7 space-weather observations and nowcast records.
Open primary sourceNASA DONKI
Reported solar-flare events for recent completed UTC windows.
Open primary sourceNOAA Space Weather Prediction Center
Observed monthly solar-cycle indices and solar radio flux.
Open primary sourceThe evidence rules
Collectors retain the original UTF-8 response, exact source URL, retrieval time and SHA-256 hash. The server validates approved hosts, coordinates, units, ranges and completed periods. The first non-null observation remains authoritative; later conflicts are recorded rather than silently replacing history.
What the values are—and are not
Natural indices are declared engineering proxies. Fog Potential is not a visibility observation; Mushroom Mood is not a mushroom census; reconstructed monthly history is not a record of executed trades. Synthetic intraday candles are stored separately from source observations.
Formulas and current observations · Long-period research · Machine-readable provenance · Worker contract