DATA FILE NAME ../pingdata/PINGDATA.000 
 head  prof   date      time      yearday        lat      lon     nbins  binl  btrk
    1    57  98/01/09  13:29:31  8.562164   41.5242   -70.6721    64     8     1
    2   151  98/01/09  18:23:29  8.766308   41.8157   -70.4456    64     8     1

 DATA FILE NAME ../pingdata/PINGDATA.001 
 head  prof   date      time      yearday        lat      lon     nbins  binl  btrk
    1    90  98/01/10  06:58:29  9.290613   42.6880   -69.6192    64     8     1
    2     7  98/01/10  14:40:25  9.611400   42.7046   -69.6394    64     8     1
    3    28  98/01/10  15:34:29  9.648947   42.7026   -69.6294    64     8     1
    4    83  98/01/10  18:02:49  9.751956   42.7024   -69.6270    64     8     1

 DATA FILE NAME ../pingdata/PINGDATA.002 
 head  prof   date      time      yearday        lat      lon     nbins  binl  btrk
    1   176  98/01/11  00:57:49  10.040150   42.3410   -69.1771    64     8     1
    2     1  98/01/11  15:55:30  10.663542   42.7012   -69.6321    64     8     1
    3    31  98/01/11  16:09:57  10.673576   42.7022   -69.6280    64     8     1

 DATA FILE NAME ../pingdata/PINGDATA.003 
 head  prof   date      time      yearday        lat      lon     nbins  binl  btrk
    1    10  98/01/11  18:44:56  10.781204   42.7987   -69.8238    64     8     1
    2   198  98/01/11  19:45:56  10.823565   42.8694   -69.9540    64     8     1

 DATA FILE NAME ../pingdata/PINGDATA.004 
 head  prof   date      time      yearday        lat      lon     nbins  binl  btrk
    1    31  98/01/12  12:15:55  11.511053   41.9220   -70.3911    64     8     1