Reference Data in Bytom 11 indicators covering reference data for Bytom. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 26.61 Degree days 2025 down 83.2% 903rd Cooling and heating degree days - Cities and FUAs — Change in cooling -20.93 Degree days 2025 down 118.9% 884th Cooling and heating degree days - Cities and FUAs 2,343 Degree days 2025 down 1.5% 227th Cooling and heating degree days - Cities and FUAs — Change in heating -470.41 Degree days 2025 down 8.4% 1019th Precipitation - Cities and FUAs — Extreme precipitation days 1.83 Days per year 2024 down 68.6% 1151st Precipitation - Cities and FUAs — Change in extreme precipitation -0.6279 Days per year 2024 down 118.6% 997th Dependency ratio - Cities and FUAs 33.3 Percentage of population aged 15-64 years 2024 up 33.7% 405th Wind threats - Cities and FUAs — Exposure to wind threats 0 Percentage of area 2023 — 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 8.2 Percentage of national value 2025 down 82.5% 544th Internet speed - Cities and FUAs — Uploading speed -34.1 Percentage of national value 2025 down 774.4% 1203rd