Thanks. In that case it may not be based on an analysis of all data related to Colombo AHC similar to the stats published by DHA in 2018.Apparently they are unable to give a link for the information in particular. Based on the cases handled an approximate timelines given.
Based on 2018 stats, median of Colombo processing times for 309 is 230 days. Median is the 50th percentile point of the time distribution. That means 50% of applications have been processed in less than 230 days and 50% of applications have taken more than 230 days for that fiscal year.