-4  -3  -3  -1  -2  -3  -3  -2   0  -1  -1  -1  -2  -2  -1  -2  -2   0  -2  -5  -5  -4  -7  -519970201OW
  -4  -5  -5  -4  -4  -4  -4  -2  -3  -4  -4  -4  -4  -3  -3  -2   0   1   3   3   3   2   1   119970202OW
   1   2   4   6   8   8   9  10  10  10   9   8   7   6   5   6   7   7   7   6   3   3   1  -119970203OW
  -1   0  -1   1   0   0   1   2   0  -1  -1  -2  -5  -7  -8  -8  -7  -5  -4  -6  -6  -7  -7  -919970204OW
  -7  -5  -6  -6  -6  -5  -4  -3  -4  -5  -5  -6  -8 -10 -11  -9  -9  -7  -7  -6  -5  -4  -4  -419970205OW
  -5  -3  -3  -3  -2   0   1   2   5   3   2   3   2   0  -2   0   0   0   1   0   0  -1  -3  -219970206OW
  -3  -5  -4  -4  -4  -3  -3  -1   0  -1  -2  -1  -2  -3  -3  -3  -4  -3  -3  -3  -4  -4  -6  -419970207OW
  -4  -6  -4  -4  -2  -3   0   1   3   3   3   4   1   2   2   0   1   2   3   2   4   3   3   319970208OW
   2   2   0   2   0   2   1   3   5   6   6   6   4   3   4   1   2   4   3   2   5   7   6   519970209OW
   6   4   2   2   0   0   1   1   3   7   8   7   4   3   3   3   2   4   5   4   6   6   5   819970210OW
   9  10   9   9   9  11   8  11  10  11  11  12  10   8   8   7   7   7   9   6   5   3   3   319970211OW
   3   2   3   2   1  -3  -2  -1  -2  -4  -3  -3  -5  -4  -5  -6  -7  -8  -8  -9 -10 -10 -10  -819970212OW
  -9  -9  -9  -8  -9  -9  -9  -9 -10 -11  -9  -9  -9 -10 -10  -8      -7 -10 -10 -11 -11 -12 -1119970213OW
 -12 -13 -12 -11 -10 -10 -10  -9  -9  -9 -10  -9 -11 -11 -11 -11 -10  -8  -8  -8  -9 -10 -10 -1019970214OW
 -10 -11 -11 -12 -11 -11 -10  -8  -7  -7  -7  -7  -8  -9  -9  -8  -6  -3  -1  -1   0   1   2   319970215OW
   3   4   5   5   6   7   8  11  12  14  14  14  13  12  11  11  11  11  11  12  12  11  10  1019970216OW
   9   7   7   5   3   1   0   2   2   2   1   2   1   2   1   1   1   3   2   3   3   4   5   519970217OW
   5   4   4   3   2   1   1   1   1   2   2   2   2   1   0   0   2   3   2   2   3   3   3   319970218OW
   2   2   1   0  -2  -4  -5  -7  -6  -7  -7  -9 -10  -9  -8  -9  -8  -7  -7  -9  -8  -7  -8  -719970219OW
  -6  -7  -6  -6  -7  -8  -9  -9  -9  -9  -8  -8  -7  -7  -7  -6  -6  -5  -5  -5  -4  -3  -2  -119970220OW
   0   0   1   1   1   1   1   1   0   0  -1  -2  -2  -2  -2  -5  -5  -6  -6  -6  -6  -7  -7  -819970221OW
  -8  -9 -11 -12 -14 -15 -15 -15 -16 -15 -16 -16 -17 -17 -17 -19 -18 -19 -20 -21 -21 -22 -22 -2219970222OW
 -20 -20 -21 -21 -23 -25 -25 -25 -26 -24 -24 -24 -22 -20 -19 -19 -19 -18 -20 -22 -21 -20 -21 -2019970223OW
 -19 -19 -19 -19 -21 -22 -23 -22 -23 -22 -22 -21 -21 -18 -17 -16 -15 -15 -16 -17 -16 -16 -15 -1419970224OW
 -14 -13 -12 -11 -13 -13 -13 -14 -15 -15 -15 -14 -14 -12 -11  -8  -7  -6  -6  -5  -4  -3  -2   019970225OW
   0   1   2   2   1   0   0  -2  -2  -1  -2  -3  -2  -3  -3  -3  -3  -2  -2  -3  -4  -5  -4  -419970226OW
  -4  -5  -5  -7  -7  -7  -9  -9 -11 -11 -12 -12 -13 -13 -13 -12 -11 -12 -13 -13 -12 -12 -12 -1219970227OW
 -12 -11 -10  -9  -9 -10 -10  -9  -9  -8  -7  -6  -6  -6  -6  -5  -5  -4  -5  -5  -3  -2  -1   119970228OW