Program to read ecg and determine r to r minute segment

Hello,
I'm doing a final project that is a bit late to change now, and is unfortanutely quite over my head. My group tested about 15 people, while an ecg signal. The ecg segment we saved is about a minute long. 30 seconds leading up to the "test" and then thirty seconds after the test. I have this information and it looks like this: (see attached image)... what i need to figure out how to do is, create (or use an already created..) labview program that can analyze this data and spit out the r-r interval average. otherwise i will have to go through each test subject and figure it out by hand (which takes about an hour), and its right before finals! help?
Attachments:
old pictures-extras-46.jpg ‏564 KB

Hey,
There can be some workarounds using some array functions, trying to find the maximums of the array and the time between them. However, this solution is not very reliable when we are talking about human health applications. I just can suggest the Biomedical Signal Analysis.
http://www.ni.com/white-paper/9037/en
Regards,

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Program to read ecg and determine r to r minute segment

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