# type topo
# cell     1.606600     1.191200     1.596400    90.000000    96.542000    90.000000
4
  1 y      1.114453    0.000000    0.391267   0                             2/12      3/22      3/19      3/13      3/10       4/9      4/12      4/13      4/10 
  2 y      0.310267    0.000000    1.194738   0                             1/14      3/14      3/11      3/13      3/10       4/1       4/4      4/13      4/10 
  3 y      0.311153    0.595600    0.391267   0                              1/4       1/7      1/13      1/16      2/12      2/15      2/13      2/16       4/3 
  4 y      1.113567    0.595600    1.194738   0                             1/17      1/14      1/13      1/16      2/25      2/22      2/13      2/16      3/23