Title:
Natural gas annual [electronic resource]
Original diskette files: All diskettes were mounted on a 5 1/4" drive of a
Windows 98 PC and the diskette files were copied to the PC hard drive. To preserve
the original file content, all files were transferred to a UNIX server in binary
format and retain their original time and date stamps.
Processed documentation files: The original DOS ASCII documentation was
examined with Perl "cio" (check-it-out) to identify extraneous control and
high ASCII characters. Form feeds (octal 14), nulls (octal 0) and the
substitute control code (octal 32) were replaced with a blank using Perl
"fix". DOS ASCII carriage return characters (octal 15) were removed with UNIX
"tr". The "fixed" files were saved with .TXT file extensions.
Processed data files: The original DOS ASCII CSV data files were examined
with Perl "cio" (check-it-out) to identify extraneous control and high ASCII
characters. Nulls (octal 0) and the substitute control code (octal 32)
were replaced with a blank using Perl "fix". DOS ASCII carriage return characters
(octal 15) were removed with UNIX "tr". The "fixed" files were saved with .CSV
data file extensions.
Users are advised that the 1989 DOS ASCII CSV data file T18907.PRN has a "bad"
data record (record or line 6). This record contains an octal 377. This octal
ASCII code was replaced with a blank in the "fixed" file T18907.CORRUPTED.CSV.
Users are advised that the 1990.1 DOS ASCII CSV data file T19026.PRN is
corrupted. The first eight records of the file contain WordPerfect for
DOS binary code; the remaining records are ASCII CSV format. The last
record contains the ASCII characters "??". In an attempt to salvage this
file, it was converted in Microsoft Word to ASCII text format and the
"fixed" file was saved as T19026.CORRUPTED.CSV.
Users are advised that the 1990.1 DOS ASCII CSV data file T19096.PRN has a "bad"
data record (record or line 40). This record contains an octal 377. This octal
ASCII code was replaced with a blank in the "fixed" file T19096.CORRUPTED.CSV.
You can view the "cio" output for the
1988.2,
1989,
1990.1,
1990.2,
1992.1, and
1992.2
original diskette files.
