Reference Data in Ōizumi 11 indicators covering reference data for Ōizumi. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 512.21 Degree days 2025 up 67.9% 204th Cooling and heating degree days - Cities and FUAs — Change in cooling 230.56 Degree days 2025 up 883.2% 31st Cooling and heating degree days - Cities and FUAs 1,433 Degree days 2025 down 1.2% 716th Cooling and heating degree days - Cities and FUAs — Change in heating -238.72 Degree days 2025 down 8.1% 532nd Precipitation - Cities and FUAs — Extreme precipitation days 25.5 Days per year 2024 up 30.8% 108th Precipitation - Cities and FUAs — Change in extreme precipitation 6.27 Days per year 2024 up 2,258.9% 117th Dependency ratio - Cities and FUAs 35.6 Percentage of population aged 15-64 years 2020 up 45.9% 308th Wind threats - Cities and FUAs — Exposure to wind threats 0 Percentage of area 2023 down 100.0% 273rd Coastal flooding - Cities and FUAs — Built-up area exposure to 0 Percentage of built-up area 2022 — 277th Internet speed - Cities and FUAs — Downloading speed 13.2 Percentage of national value 2025 down 58.6% 380th Internet speed - Cities and FUAs — Uploading speed 30.1 Percentage of national value 2025 down 19.9% 185th