Num   center,px   len,px    S/N
      0    188.73      375    267.69
      1    402.02       57    351.15
      2    460.07       59    352.92
      3    519.52       60    352.13
      4    580.04       61    352.59
      5    641.02       61    350.94
      6    702.52       62    351.26
      7    764.00       61    350.24
      8    825.50       62    350.01
      9    888.01       63    351.26
     10    951.03       63    352.18
     11   1013.50       62    350.56
     12   1075.96       63    352.70
     13   1138.98       63    352.71
     14   1202.01       63    352.59
     15   1264.97       63    352.06
     16   1328.00       63    351.08
     17   1390.97       63    351.42
     18   1453.97       63    351.40
     19   1516.98       63    351.84
     20   1579.95       63    351.46
     21   1643.01       63    351.37
     22   1705.96       63    350.87
     23   1768.97       63    350.53
     24   1831.95       63    351.17
     25   1895.44       64    352.27
     26   1958.91       63    351.55
     27   2019.44       57    231.04