S10 Crown Radius Notes

There are a few obvious errors from uncorrectable data
entry mistakes:
  QUAD  TREENO    HT   LCR     N     E     S     W
  5E1   30.0    -2.1  -333   3.8   4.4   4.2   2.8
  7I3   772.0    1.7  -277   0.7   0.9   1     0.8
  7I4   96.0     6    146.  NA    NA    NA    NA  
  8E1   34.0     7.5  127.   4.2   3.4   5.5   4.7
  8I4   632.1   18.4  110.   0.8   0.9   0.5   0.2

There are also a few negative radius measurements (N,E,S,W), but
those are legitimately from leaning trees.