 18 ecart_type_moyen=   3.55852175
  71.4283752  483.07196  3.55852222  1210.86816
  136.92337  3443.06665  3.55852222  8630.39062
  238.660217  1340.20801  3.55852222  3359.36523
  245.507797  1176.26416  3.55852222  2948.42358
  362.129364  6629.65967  3.55852222  16617.9043
  443.710724  2448.95947  3.55852222  6138.56152
  449.575928  2565.36914  3.55852222  6430.354
  458.187256  3372.28076  3.55852222  8452.95898
  466.5289  1617.18896  3.55852222  4053.64575
  473.77652  1668.40942  3.55852222  4182.03467
  496.447296  20111.5176  3.55852222  50411.5273
  537.583069  1679.70166  3.55852222  4210.33984
  579.334778  536.306641  3.55852222  1344.30615
  604.489502  234.449234  3.55852222  587.67041
  656.303223  289.554321  3.55852222  725.796814
  675.512512  821.165771  3.55852222  2058.33398
  696.200439  694.488647  3.55852222  1740.80518
  700.210999  763.144775  3.55852222  1912.89856
