P    #regions in PPM
# 2012-03-30 10:48:22 -0500  mfjofre@watusi.nmrfam.wisc.edu
# low field   high field   mi   maxi
  1000.0  61.237709195013466  0.000  1000000.000  # for region 1
  61.237709195013466  16.810361543729186  4.246  19.498  # for region 2
  16.810351543729187  0.1  0.000  1000000.000  # for region 3