National Grid daily demand data for years 2015-2019, for natural gas at the Great Britain local distribution zone level, and estimated amount used for heat and hot water

5 years worth of daily data for Great Britain from National Grid, and an estimate of how much of this was used for heat and hot water, comma separated values in utf-8 format

Columns include:

column_name: date description: gas day in ISO8601 format

column_name: GB_ldz_natural_gas_kWh description: daily value for Local Distribution Zone (LDZ) natural gas energy in kWh. From National Grid's data item explorer (https://mip-prd-web.azurewebsites.net/DataItemExplorer), check boxes Demand > Exit Point Actuals > NTS Energy Offtaken, LDZ Offtake Total. Use radiobuttions 'Latest Values' and 'Applicable For', and add values for dates to then download. Note: data from National Grid is on a rolling basis approximate 5-year window- with data from approximately 5 years prior to the download date being unavailable. Units are in kWh

column_name: heat_as_an_estimated_fraction_of_GB_ldz_natural_gas_demand description: An estimated fraction of the amount of local gas demand that is used for heating and hot water

column_name: GB_ldz_heat_from_natural_gas_kWh description: The column 'GB_ldz_natural_gas_kWh' multiplied by the column 'heat_as_an_estimated_fraction_of_GB_ldz_natural_gas_demand'. Units are in kWh

本数据集收录英国国家电网（National Grid）提供的5年每日级数据，以及该数据中用于供暖与热水的能耗占比估算值，数据格式为UTF-8编码的逗号分隔值文件。

数据集包含以下字段：
1. date：日期字段，以ISO8601格式标注燃气日（gas day）。
2. GB_ldz_natural_gas_kWh：本地配送区（Local Distribution Zone, LDZ）每日天然气能耗量，单位为千瓦时（kWh）。该数据源自英国国家电网的数据项探索工具（Data Item Explorer，https://mip-prd-web.azurewebsites.net/DataItemExplorer），获取方式为：勾选"Demand > Exit Point Actuals > NTS Energy Offtaken, LDZ Offtake Total"选项，选择"Latest Values"与"Applicable For"单选按钮，输入目标日期后即可下载数据。需注意：英国国家电网的数据仅提供下载日期往前约5年的滚动窗口数据，下载日期5年之前的相关数据无法获取，单位为千瓦时（kWh）。
3. heat_as_an_estimated_fraction_of_GB_ldz_natural_gas_demand：本地天然气总需求中用于供暖与热水的估算占比。
4. GB_ldz_heat_from_natural_gas_kWh：该字段数值为"GB_ldz_natural_gas_kWh"与"heat_as_an_estimated_fraction_of_GB_ldz_natural_gas_demand"的乘积，单位为千瓦时（kWh）。