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COMP3522-HKO

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weather
hong-kong
hko
rainfall
meteorology
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COMP3522-HKO / cedd /README.md
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Update COMP3522-HKO processed dataset (2026-10-08T15:45:39+08:00)
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cedd — auto-generated data guide

Auto-generated on 2026-10-08T15:45:30+08:00 by scripts/generate_processed_readmes.py from the files actually present in this directory. Do not edit by hand — re-run the generator (or scripts/flatten_hko_data.py) after the data changes.

Overview

  • Files: 2
  • Total rows: 98,730
  • Total size: 149.3 KB
  • Sources: cedd_geo
  • Time coverage: 2023-01-01 00:00:00 .. 2025-12-31 00:00:00
  • Join keys: use station_id / station_code to join to the station metadata table in this or the hko section; use the time column shown per file for temporal joins.

Files

cedd_daily_rainfall.parquet

  • Format: parquet · Rows: 98,640 · Columns: 10 · Size: 145.9 KB
  • Purpose: HKO CIS daily total rainfall
  • Source: cedd_geo
  • Time coverage (date): 2023-01-01 00:00:00 .. 2025-12-31 00:00:00
  • station_id: 90 distinct
Column Type Non-null Range / values Description
date str 98640/98640 (100%) 2023-01-01 00:00:00 .. 2025-12-31 00:00:00 observation date
station_id str 98640/98640 (100%) 90 distinct; e.g. "H01" AWS/CoWIN station identifier
station_name str 98640/98640 (100%) 61 distinct; e.g. "Mount Davis" station name
easting int64 98640/98640 (100%) range 804276 .. 855431 field
northing int64 98640/98640 (100%) range 802763 .. 842003 field
value_raw str 98640/98640 (100%) 676 distinct; e.g. "0" original value exactly as received (may be 'M' or 'Trace')
rain_mm_1d float64 97692/98640 (99%) range 0 .. 622.5 daily total rainfall (mm)
is_trace bool 98640/98640 (100%) True / False TRUE when the raw rainfall value is 'Trace' (< 0.05 mm)
is_incomplete bool 98640/98640 (100%) True / False field
source str 98640/98640 (100%) values: cedd_geo source dataset identifier

cedd_stations.csv

  • Format: CSV · Rows: 90 · Columns: 5 · Size: 3.4 KB
  • Purpose: HKO station metadata
  • Source: cedd_geo
  • station_id: 90 distinct
Column Type Non-null Range / values Description
station_id str 90/90 (100%) 90 distinct; e.g. "H01" AWS/CoWIN station identifier
station_name str 90/90 (100%) 61 distinct; e.g. "Mount Davis" station name
easting int64 90/90 (100%) range 804276 .. 855431 field
northing int64 90/90 (100%) range 802763 .. 842003 field
source str 90/90 (100%) values: cedd_geo source dataset identifier