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post #8 of Old 09-24-2012 Thread Starter
thenzsea
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Re: Race rating (TMF, TCF) for Farr IMS 40.7

I find out the difference of PHRF low high & ave. ^^

Corrected Time = Elapsed Time * TCF
TCF = 650 / (600 + PHRF) for Low Range (Wind less 5m/s)
= 650 / (550 + PHRF) for Medium Range (Wind 5~8m/s)
= 650 / (480 + PHRF) for High Range (Wind over 8m/s)
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