Known errors in CD-ROMs

STF3A

STF1D/STF3D (104th Congressional Districts)

1992 TIGER

In- and Out- County Migration

defective CD-ROMs (errors in production)

Several STF3A CDs need to be re-mastered by the Bureau of the Census. An explanatory note was received from Jim Clark on 3/1/95.

In November 1994 a replacement (disk90) was issued for the defective 1992 TIGER (DE,DC,VA) (disk 199). Two CDs (disk142 and disk158) were reissued in October 1995 to correct STF3A errors in the New England states. The remaining problems remain to be corrected.

• (disk155) (STF3A for Kansas)
  In the file stf300ks.dbf, the first 15885 records appear OK. records 15887 to 15993 are bad (fileid=TF3A). After that processing continues without problems. The problem has been verified on another copy of the same CD. H.Meij (CIESIN) reported the problem on 9/23/94 to C.Stuber, Bureau of the Census.

• (disk143) (STF3A for DE,DC,MD)
  On 11/23/94, Sidney Wong (sidney@ced.berkeley.edu) discovered that GO and EXTRACT do not work properly for STF3A Delaware data. EXTRACT displays a dictionary that belongs to STF3B instead of STF3A, and GO does not work at all. There is no problem with Maryland STF3A data on the same CD. The Delaware problem affects only GO and EXTRACT, not DBUTIL or LOOKUP.

• (disk178) (STF3A for OH: Morrow-Wyandot)
  On 9/18/95, Mary Snider (mary@spatial.ead.anl.gov) discovered that in the STF3A file at the blockgroup level the following block group is missing:

  State: Ohio
  County: Portage
  Place: Ravenna City
  Tractbna: 6008
  Blockgroup:4

  In the STF1A file this blockgroup shows 107 persons. The problem has been confirmed with both LOOKUP and GO. There are seven other block groups in the same tract which have no problem. The 100% population counts in STF3A (except for the missing block group 4) agree with the population counts in STF1A. On 9/19/95 the problem was reported to Gloria Porter in the Decennial Management Office (gloria_j_porter@ccmail.census.gov).

  On 10/11/95 an explanatory fax was received from Peggy Payne.

On 10/2/95 Sherry Quinones (Sherry@ruf.rice.edu) reported problems with the STF1D/3D CD with 104th Congressional districts (disk250). She reported that employment tables were missing for two states.

Further investigation revealed that in (at least) table 62, state level STF3D data for the following states (only) contain numbers without leading zeros.

        13      Georgia
        22      Louisiana
        27      Minnesota
        45      South Carolina
        51      Virginia

1992 TIGER

• (disk56) (1992 TIGER for ND,UT)
  On 6/9/95, Karl Goldstein and Susan Mohler (karl@ced.berkeley.edu) reported errors with this CD. It was re-mastered by the Census Bureau. A replacement copy was requested from Chris Stuber on 6/12/95.

Several errors were discovered by a Florida newspaper in May 1995. An explanatory note was distributed by Peggy Walker, Florida Atlantic University, on 5/18/95, and subsequently corrected by Dave Paletz of the Census Bureau.

• (disk254) (1990 Census County In-Migration).
  There are errors in eight Florida counties and nine Missouri counties, and in the Florida and Missouri state summaries.

• (disk255) (1990 Census County OutMigration).
  There are errors in one Mississippi county (Harrison), and in the Mississippi state summary.

• (disk141) (STF3A for CO,NM) Errors were reported by:

  RMaurer220@aol.com 12/11/95

  rbarrett@smtpgate.dphe.state.co.us 12/13/95

  and confirmed by dwmerrill@lbl.gov. The CD has visible scratches. A replacement copy was requested from Chris Stuber on 12/11/95. This CD was replaced with a disk copy copy at the Census Bureau on 2/15/96.

• (disk148) (STF3A for IL (first part) Errors were reported by:

  ccalhoun@interaccess.com 1/18/96

  and confirmed by dwmerrill@lbl.gov.
  Can't seem to read record 10703 from file "/CEDRCD/disk148/stf310il.dbf".
  "ls -al" shows 21301267 bytes on ftp://cedrcd.lbl.gov/CEDRCD/disk148 but only 11526144 bytes could be read with wc. After remounting, wc gave the correct result. This CD was replaced with a disk copy copy at the Census Bureau on 2/15/96.

• (disk119) (STF1A for IL) Errors were reported by:

  yezerc@gwis2.circ.gwu.edu 2/20/96

  and confirmed by dwmerrill@lbl.gov.
  Can't seem to read record 34717 from file "/CEDRCD/disk119/stf1a0il.dbf".
  "ls -al" shows 40111989 bytes on ftp://cedrcd.lbl.gov/CEDRCD/disk119/stf1a0il.dbf but only 3497984 bytes could be read with wc. Unmounting and remounting gave different, nonreproducible, results. After remounting, wc gave the correct result.
  A replacement copy was requested from Chris Stuber on 2/20/96. This CD was replaced with a disk copy copy at the Census Bureau on 2/21/96.

• (disk117) (STF1A for PA) Errors were reported by:

  Jjleaman@aol.com 2/20/96

  and confirmed by dwmerrill@lbl.gov.
  "dbiopen:problems reading header of index file "ICDROM/disk117/stf1atpa.ndx
  After unmounting and remounting, "ls -al" shows 2069504 bytes but only 229376 bytes could be read with wc.
  A replacement copy was requested from Chris Stuber on 2/21/96.

• (disk22) (STF1A for CA) Errors were reported by:

  ojking@empirenet.com 2/20/96

  and confirmed by dwmerrill@lbl.gov.
  Can't seem to read record 21974 from file "/CEDRCD/disk22/stf1a7ca.dbf".
  After unmounting and remounting, "ls -al" shows 74193125 bytes but only 1032192 bytes could be read with wc. Unmounting and remounting gave different, nonreproducible, results.
  A replacement copy was requested from Chris Stuber on 2/21/96.

possibly damaged copies

• (disk33) (1992 TIGER for TX Anderson-Floyd, #2 ) A duplicate copy of LBL035. This copy #2 (disk33) has visible scratches but no problems have been reported. Please report any unreadable files to dwmerrill@lbl.gov.

damaged or defective copies already replaced

• (LBL035) (1992 TIGER for TX Anderson-Floyd, #1 )
  On 3/1/95, Henry Grant (grant@prc.utexas.edu) reported that file /48/113/tgr48113.f52 is damaged. Only 573440 bytes of 3.5MB are readable. As of 3/8/95, a possibly damaged duplicate #2 (disk33) is available.

• (LBL076) (STF3B for Zip codes 4,5,6, #1).
  On 2/22/95, Mark Fleury (mgfleury@netcom.com) reported that file stf326.dbf is damaged. As of 4/4/95 a duplicate #2 (disk265) is available.

• (disk142) (STF3A for CT, ME, RI, VT). On 10/18/95, this CD was replaced by a newly issued CD from the Census Bureau. The defective original (LBL097) was taken off line. See explanatory note received from Jim Clark on 3/1/95.

• (disk156) (STF3A for Kentucky)
  On 9/6/95 David Rigg (drigg@etta.auc.edu) discovered that record 14304 of the file stf323ky.dbf on disk156 (STF3A for KY) is damaged. Deane Merrill confirmed that only the first 8.4 MB of the 12.5 MB file can be read with FTP. A replacement CD was installed on 10/20/95. The old defective is on disk319.

• (disk158) (STF3A for MA, NH) On 10/18/95, this CD was replaced by a newly issued CD from the Census Bureau. The defective original (LBL098) was taken off line. See explanatory note received from Jim Clark on 3/1/95.

• (disk170) (STF3A for New York: Albany-Oneida).
  Around 10/1/95 an unusual number of LOOKUP errors began occurring with requests for New York STF3A data. Remounting the CD had no effect, and moving it to another drive had no effect. A replacement CD was installed on 10/20/95. The old defective is on disk320.

• (disk199) (1992 TIGER for DE,DC,VA)
  disk199 is the officially released CD. File names for Delaware are incorrect. There is no problem with DC and Virginia data on the same CD. On 11/29/94 a corrected custom version was received from the Bureau of the Census, and mounted as disk90.

• (disk200) (1992 TIGER for New York: Albany-Warren).
  On 4/6/95 Karl Goldstein (karl@ced.berkeley.edu) reported persistent I/O errors with file 36/035/36035.f51 on disk200. Similar errors were observed for files in directories 36/019, 36/037, and 36/039. A replacement CD was installed on 10/20/95. The old defective is on disk321.