The actual printed books of Griffith's Valuations have columns for the following:
No. and Letter of Reference to Map
Townlands and Occupier
Immediate Lessor
Description of Tenement (this is where you get house, offices,m land, etc.)
Area (in acres, rods, perches)
Rateable Annual Valuation (this is broken down into 2 sub-columns: Land, Buildings)
Total Annual Valuation of Rateable Property.
This site has scanned images:
http://staging.askaboutireland.ie/gv4/gv_family_search_form.phpPut 'Owley' into surname box and select Wexford for county and 4 entries are listed. From there you can look at images.