header file 'filtered_func_data', num_fields = 43, fields:

all fields:
  name                offset  nvals  values
  ------------------- ------  -----  ------
  sizeof_hdr             0      1    348 
  data_type              4     10    
  db_name               14     18    
  extents               32      1    0 
  session_error         36      1    0 
  regular               38      1    r
  dim_info              39      1    0 
  dim                   40      8    4 64 64 21 180 1 1 1 
  intent_p1             56      1    0.000000 
  intent_p2             60      1    0.000000 
  intent_p3             64      1    0.000000 
  intent_code           68      1    0 
  datatype              70      1    4 
  bitpix                72      1    16 
  slice_start           74      1    0 
  pixdim                76      8    -1.000000 4.000000 4.000000 6.000000 3.000000 1.000000 1.000000 1.000000 
  vox_offset           108      1    352.000000 
  scl_slope            112      1    0.000000 
  scl_inter            116      1    0.000000 
  slice_end            120      1    0 
  slice_code           122      1    0 
  xyzt_units           123      1    10 
  cal_max              124      1    25500.000000 
  cal_min              128      1    3.000000 
  slice_duration       132      1    0.000000 
  toffset              136      1    0.000000 
  glmax                140      1    0 
  glmin                144      1    0 
  descrip              148     80    FSL3.2beta
  aux_file             228     24    
  qform_code           252      1    1 
  sform_code           254      1    0 
  quatern_b            256      1    0.000000 
  quatern_c            260      1    1.000000 
  quatern_d            264      1    0.000000 
  qoffset_x            268      1    0.000000 
  qoffset_y            272      1    0.000000 
  qoffset_z            276      1    0.000000 
  srow_x               280      4    0.000000 0.000000 0.000000 0.000000 
  srow_y               296      4    0.000000 0.000000 0.000000 0.000000 
  srow_z               312      4    0.000000 0.000000 0.000000 0.000000 
  intent_name          328     16    
  magic                344      4    n+1