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Hi Mick
I think that what the guys are saying is that what appears to be a "decimal" value following the 37 is not actually a decimal value, but is in fact the value in minutes from 00 to 59 minutes.
So, if you are at -37.88 in decimal, then 0.88 x 1 deg is the same as 0.88 x 60 mins = 52.8 minutes.
Therefore, decimal -37.88 is -37deg 52.8 mins.
Cheers
Dennis
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