[PP Field
   lbyr: 0
   lbmon: 0
   lbdat: 0
   lbhr: 0
   lbmin: 0
   lbsec: 0
   lbyrd: 0
   lbmond: 0
   lbdatd: 0
   lbhrd: 0
   lbmind: 0
   lbsecd: 0
   lbtim: 0
   lbft: 0
   lblrec: 46
   lbcode: 12304
   lbhem: 0
   lbrow: 4
   lbnpt: 4
   lbext: 30
   lbpack: 0
   lbrel: 3
   lbfc: 0
   lbcfc: 0
   lbproc: 0
   lbvc: 0
   lbrvc: 0
   lbexp: 0
   lbegin: 0
   lbnrec: 0
   lbproj: 0
   lbtyp: 0
   lblev: 0
   lbrsvd: (0, 0, 0, 0)
   lbsrce: 0
   lbuser: (1, -99, 0, 0, 0, 0, 0)
   brsvd: (0.0, 0.0, 0.0, 0.0)
   bdatum: 0.0
   bacc: 0.0
   blev: 0.0
   brlev: 0.0
   bhlev: 0.0
   bhrlev: 0.0
   bplat: 90.0
   bplon: 0.0
   bgor: 0.0
   bzy: 0.0
   bdy: 0.0
   bzx: 0.0
   bdx: 0.0
   bmdi: -1e+30
   bmks: 1.0
   data: [[  0.   1.   2.   3.]
 [  4.   5.   6.   7.]
 [  8.   9.  10.  11.]
 [ 12.  13.  14.  15.]]
   x: [ 1.  2.  3.  4.]
   x_lower_bound: [ 0.89999998  1.89999998  2.9000001   3.9000001 ]
   x_upper_bound: [ 1.10000002  2.0999999   3.0999999   4.0999999 ]
   y: [ 111.  222.  333.  444.]
   y_lower_bound: [ 110.90000153  221.8999939   332.8999939   443.8999939 ]
   y_upper_bound: [ 111.09999847  222.1000061   333.1000061   444.1000061 ]
]