wfFddiMacFrameErrorRatio 1.3.6.1.4.1.18.3.4.15.2.3.1.15

This variable is the value of the ratio: ((delta wfFddiMacLostCts + delta wfFddiMacErrorCts) / (delta wfFddiMacFrameCts + delta wfFddiMacLostCts)) 2**16)