The decode algorithm determines a bit value for the current low period duration
that is best matched by the expected durations. But the low pass filter cannot
-remote all sources of error, so a frame may be received with bits in error.
+remove all sources of error, so a frame may be received with bits in error.
Frames are validated according to the [WWVB time code
format](http://tf.nist.gov/stations/wwvbtimecode.htm), and two frames must have
matching data to consider a valid time acquisition. Of course in this sense,