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@andrevdv andrevdv commented Dec 11, 2025

Add support for reading monthly GRDC data from <station_id>_Q_Month.txt.

Unlike daily data, monthly files include three columns:

  • Original discharge
  • Calculated discharge
  • Flag indicating the percentage of valid daily values used for the calculation

NetCDF support is not implemented. Includes one test.

related to #480

@andrevdv
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as for the unit_of_measure:

I kept using the the hardcoded units": "m3/s" for both Original discharge and Calculated discharge similar to how it's done for daily data so the metadata field for unit_of_measure is still unused. Could add it to the attributes list for completeness.

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andrevdv commented Dec 11, 2025

using actual GRDC .txt file:

example

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