This API endpoint, titled "Average Block Size", is designed to fetch the average size of blocks in a specific network over a defined date range. The parameters expected for this query include 'dates', a date-range specifying the start and end date for the period of interest, and 'network', a query parameter indicating which network's data to fetch. The output of this API endpoint is a structured data containing 'date' and 'average_block_size' for each day within the requested range, ordered ascendingly by the date. The data can be presented visually using a Chart visualization, which graphically represents the variation of average block size with each date, thus providing an intuitive and comprehensive overview of block size trends over time.