# Statistics

- **Reference Timezone**: All data is based on **UTC**.
- **Query Range**: Data within the last 1 year is targeted, and the maximum search period per request is 3 months.
- **Update Timing**: Data is not reflected in real time and may be delayed by up to **36 hours**.

 - [GET /statistics/content-rank](https://kollus-api.redocly.app/en/products/vod/openapi/%ED%86%B5%EA%B3%84/getcontentrankstatistics.md): Retrieves a ranking list based on view counts for a specified period, aggregating content across all channels within the service account.
 - [GET /channels/{channel_key}/statistics/content-rank](https://kollus-api.redocly.app/en/products/vod/openapi/%ED%86%B5%EA%B3%84/getchannelcontentrankstatistics.md): Retrieves a ranking list based on view counts within a specified period for content belonging to a specific channel.
 - [GET /statistics/channels](https://kollus-api.redocly.app/en/products/vod/openapi/%ED%86%B5%EA%B3%84/getchannelstatistics.md): Retrieves summary statistics data for all channels for a specified period.
 - [GET /statistics/summary-daily](https://kollus-api.redocly.app/en/products/vod/openapi/%ED%86%B5%EA%B3%84/getdailysummarystatistics.md): Retrieves summary statistics data for all content for a specified period.
 - [GET /statistics/countries](https://kollus-api.redocly.app/en/products/vod/openapi/%ED%86%B5%EA%B3%84/getcountriesstatistics.md): Retrieves statistical data by country for the specified period.