P    #regions in PPM
# 2013-02-22 09:11:16 +0100  puk06221@pcch170
# low field   high field   mi   maxi
  27.554840270495713  14.149782841605907  0.453  1.394  # for region 1
  -7.4472541271610035  -31.278467334076215  0.662  3.101  # for region 2
  -34.25736898494062  -67.77001255716513  12.997  18.000  # for region 3
