The above information can be accessed on Internet at https://wss.rbi.org.in/
The concepts and methodologies for WSS are available in Handbook on WSS (https://rbi.org.in/scripts/PublicationsView.aspx?id=15762).
Time series data are available at http://dbie.rbi.org.in/
Ajit Prasad Assistant Adviser
Press Release : 2017-2018/2655