Reference Data in Hitachi 15 indicators covering reference data for Hitachi. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 321.5 Degree days 2025 up 61.3% 373rd Cooling and heating degree days - Cities and FUAs — Change in cooling 146.48 Degree days 2025 up 504.2% 109th Cooling and heating degree days - Cities and FUAs 1,243 Degree days 2025 down 13.3% 799th Cooling and heating degree days - Cities and FUAs — Change in heating -393.48 Degree days 2025 down 93.5% 807th Cooling and heating degree days - Cities and FUAs — Change in heating -102.12 % change on previous year 2025 up 86.8% 996th Cooling and heating degree days - Cities and FUAs, annual growth rate -13.79 % change on previous year 2025 down 23.5% 890th Cooling and heating degree days - Cities and FUAs — Change in cooling -31.67 % change on previous year 2025 down 150.2% 194th Cooling and heating degree days - Cities and FUAs — Cooling degree -17.43 % change on previous year 2025 down 453.2% 321st Precipitation - Cities and FUAs — Extreme precipitation days 26.5 Days per year 2024 up 16.5% 95th Precipitation - Cities and FUAs — Change in extreme precipitation 7.03 Days per year 2024 up 114.4% 92nd Dependency ratio - Cities and FUAs 57.9 Percentage of population aged 15-64 years 2020 up 40.5% 15th Wind threats - Cities and FUAs — Exposure to wind threats 15.8 Percentage of area 2023 down 84.2% 180th Coastal flooding - Cities and FUAs — Built-up area exposure to 0.0403 Percentage of built-up area 2022 down 45.0% 211th Internet speed - Cities and FUAs — Downloading speed -3.3 Percentage of national value 2025 down 222.2% 978th Internet speed - Cities and FUAs — Uploading speed 10.1 Percentage of national value 2025 up 34.7% 485th