Evualuating Instrument Span Periods

Please help:

 

- count the number times an instrument's actual output equals its span (500).
 

 
Tag
Correct

Time
Value
Value

4/1/2013 1:00
48
48

4/1/2013 1:01
52
52

4/1/2013 1:02
122
122

4/1/2013 1:03
65
65

4/1/2013 1:04
455
455 4/1/2013 1:05 Greetings! 500 1000 4/1/2013 1:06 - create an hourly average using a substition for those instances where the instrument is at span value.
500 1000

This dataset is a crude example.  Thanks for your advice!