exp 3 and 4 times and proper format

[robert zellmer]

You were allowed to use your phones for exp 3 (DRL) to keep track of
the elapsed time.  You can do so again for exp 4 (VRT).  However, I've
seen a couple of things you shouldn't do.

1)  Your stopwatch will likely have times such as 3:22:44.3.
     This is hours:min:sec.fractions of a second.  There's no
     point in recording the fraction of a second.  You could not
     be this accurate for either exp 3 or 4.

2)  You can not leave your time in this format for either exp 3 or 4.
      You will need to convert it to either all seconds or minutes, it 
really
      doesn't matter which you choose.  Turns out there is a pretty easy
      way to do this.  Go to the following link and follow the directions:

<https://www.proworkflow.com/blog/2009/02/converting-time-into-minutes-using-excel/>https://www.proworkflow.com/blog/2009/02/converting-time-into-minutes-using-excel/

      Put your time in as 0:00:00 (h:mm:ss).  If your time is 30 min and 
30 sec
      enter it as 0:30:30.  If it's 1 hour, 5 min and 5 sec enter it as 
1:05:05.
      This appears to work fine and gives time in minutes.  You can leave it
      in minutes.  If you want seconds just multiply the equation shown 
by 60.

Dr. Zellmer
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