Option chain read for NIFTY index Table displayed on NSE website

Hi,

How to read and understand all the columns of NIFTY option chain displayed on NSE website https://www.nseindia.com/live_market/dynaContent/live_watch/option_chain/optionKeys.jsp?symbolCode=-10006&symbol=NIFTY&symbol=NIFTY&instrument=-&date=-&segmentLink=17&symbolCount=2&segmentLink=17

For example, i am explaining my understanding of few columns, please correct me if i am wrong.

Bid Qty: Buyers willing quantity to buy

Bid price: Buyers willing price to buy

Ask Qty: Sellers willing quantity to sell

Ask price: Sellers willing price to sell

Net chng: How much the price risen or fallen since the previous day

LTP: Last traded price

IV: Need experts knowledge to understand this field

Volume: Need experts knowledge to understand this field

Change in OI: Need experts knowledge to understand this field

OI: Need experts knowledge to understand this field

please explain the fields namely IV, Volume, Change in OI and OI

​Thanks in advance..

Check this link.

You can also refer to these links as I have come across it. These reports are made with the help of NSE website data but with more analysis and easy to understand :

  1. https://www.dynamiclevels.com/en/nifty/open-interest-nifty-future(the blue highlighted box represents buying of more than average and red boxes denote more selling than average)

  2. https://www.dynamiclevels.com/en/nifty/open-interest-nifty-call-option

  3. https://www.dynamiclevels.com/en/nifty/open-interest-nifty-put-option

  4. https://www.dynamiclevels.com/en/nifty/nifty-option-chain

Hope this helps you.

Thanks for your valid link, i have gone through the link and understand the fields namely Volume and OI but i am unable to identify the change in OI field. could you please help on this