Fill in the form as requested. You should use the ± attributes. You may use an asterisk in place of an unsure value in ONE box only! Selecting an 'ADD' checkbox, adds one point of ranging to that position ONLY.
After the first set of results, you may edit any information and re-search. The information beside the plate number is the difference between your measurement and the accepted data. A '+' is HIGH. A '-' indicates that you are LOW, perhaps due to excessive inking. Example: For your '6+', the indication is '-3', actual then is '7+'.