# Datacard for Congo, Rep. Digital Development Indicators (1960-2024)

This dataset contains a time-series of key digital development indicators for Congo, Rep., spanning from 1960 to 2024. The data has been aggregated from multiple sources, cleaned, and processed into a single, analysis-ready CSV file.

The raw data was sourced from **The World Bank** data portal. The original files were provided in Excel (.xls) format.

- **Temporal Coverage**: 1960-2024
- **Geographic Coverage**: Congo, Rep.
- **Format**: Comma-Separated Values (CSV)

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## Data Points (Features)

The dataset includes the following digital development indicators, with 'Year' serving as the primary date column:

1. `fixed_broadband_subscriptions_per_100_people_`: Fixed broadband subscriptions (per 100 people)
2. `individuals_using_the_internet_of_population_`: Individuals using the Internet (% of population)
3. `mobile_cellular_subscriptions_per_100_people_`: Mobile cellular subscriptions (per 100 people)

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## Data Preparation & Missing Data Handling

The raw data was processed using a Python script to transform it into a clean, structured format. The key steps were:

1.  **Filtering**: The data was filtered to include only records for 'Congo, Rep.'.
2.  **Reshaping**: The original wide-format data (years as columns) was melted into a long format.
3.  **Merging**: Data from all indicator files was merged into a single DataFrame on 'Year'.
4.  **Handling Missing Data**: Missing values (`NaN`) were filled using a two-step strategy: linear interpolation followed by a back-fill to handle any remaining gaps at the start of the series.