What is the difference bw "Ask Quantity" and "Total Ask Quantity? "

" Ask Quantity " is a Coloumn which gives the details about the Quantity @ Particular Price.

" Total Ask Quantity " is a Value of Sum of Total " Ask Quantity "

bid quantity -  it means price that buyer is ready to pay for any stock or commodity..

ask quantity - it means price at which seller is ready to sell any stock or commodity..

total bid quanity -  it means total number of buyers in that particular stock or commodity.

total ask quantity - it means total number of seller in that particular stock or commodity..

you can also check this link.. to get full knowledge on volumes..

http://zerodha.com/varsity/chapter/volumes/