CD_9.PROBLEMS

October 21, 1994
H. Kent Hills


INTRODUCTION

This is a current list of the known problems and solutions encountered in using
the CDAW-9/PROMIS Data Base Prototype CD-ROM.  This document, B44508 in NSSDC's
Technical Reference File, will be maintained in digital format by NSSDC, and
will be kept up to date as additional information becomes available.   A paper
copy will be distributed with the CD-ROMs.  Although the original documentation
indicated a different address for an electronic copy of these information
updates, they will be available for copy as follows: 

Anonymous ftp from node nssdca.gsfc.nasa.gov as file
[space_physics.cdaw.cdrom]cd_9.problems.

DECnet copy from 
NSSDCA::ANON_DIR:[SPACE_PHYSICS.CDAW.CDROM]CD_9.PROBLEMS.


A "latest information" file about CDAW-9 and the CDAW-9 CD-ROM will also be kept
up to date in this same directory, with the filename CD_9.LATEST_INFO. 
       
We ask users that if they encounter problems with this CD-ROM, to please
contact: 
  H. Kent Hills                 
  DECnet: NSSDCA::HILLS
  Internet:  hills@nssdca.gsfc.nasa.gov
  Phone: (301)-441-4195
  FAX: (301)-441-9486

           or

  NSSDC User Support Office
  DECnet: NSSDCA::REQUEST
  Internet: request@nssdca.gsfc.nasa.gov
  (301)-286-6695


SPECIFIC PROBLEMS AND SOLUTIONS

1. There is an uncatalogued CDF named ZRG which for Event B does not have the
whole CDAW time period.  ZRG is cataloged in our on-line catalogs, although its
variable list is blank. The reason is unknown.  However, our browser software
was able to retrieve data from it for event B. The CDF runs from April 2, 1986
at 1800 to April 3 at 1000, but there is mostly (or completely) fill data
starting 1 minute before April 3 and continuing to the end of the CDF. 
Sampling a relatively small fraction of the different stations indicated that
all had fill data for the numerous points checked on April 3.  The original
data are available from NGDC in Boulder (for a fee).  The data for ZRG was
obtained from their ground magnetic station data, from a collection they call
RGON stations (hence our name: Z for ground magnetic, and RG from RGON).  Our
contact to obtain the data was Herb Kroehl, whose phone number is (303)
497-6121, and e-mail is  hkroehl@ngdc.noaa.gov. 


2. The ZSSR CDF is listed in the catalog as being for events A and B, but data
in the CDF for event B is really for event A.  (The CDF listed under event A is
correct.)   ZSSR for event B is contained correctly in our on-line data
directory for event B. 


3. The CDF named XISY is not in the printed catalogue but is  
on the on-CD catalog.  However, XISY under EventB might not be readable
(on a PC) with CDFLIST and might come up as 'corrupted'.  This CDF (XISY) is in
our on-line catalog and data directory.  The CDF is structured as an array of
size 4 (to accomodate certain variables).  There are 19 variables and 28,800
records in this CDF.  It can be accessed from our on-line CDAW system for use as
needed, or you can use the Data Manipulation feature to copy the CDF to your
machine.  It can also be copied by DECnet copy or ftp.  The directory listing
for XISYB is given below.  Note that these files are in VAX representation, and
that the CDF software must have all 20 of the files, even if certain files have
little or no data in them.  The CDF utilities provide routines for converting
from this multi-file format to a single-file format, and for converting among
various machine representations.  These comments also apply to accessing ZSSR,
too. 

Directory NCF_CDAW9_DATA:[CDAW9CDF.EVENTB]

XISYB.CDF;1              40   4-FEB-1992 17:33:55.69
XISYB.V0;1              450   4-FEB-1992 17:33:55.90
XISYB.V1;1              900   4-FEB-1992 17:33:56.13
XISYB.V10;1             900   4-FEB-1992 17:33:58.39
XISYB.V11;1             900   4-FEB-1992 17:33:58.59
XISYB.V12;1             900   4-FEB-1992 17:33:58.95
XISYB.V13;1             900   4-FEB-1992 17:33:59.11
XISYB.V14;1             900   4-FEB-1992 17:33:59.46
XISYB.V15;1               1   4-FEB-1992 17:33:59.61
XISYB.V16;1               1   4-FEB-1992 17:33:59.90
XISYB.V17;1               1   4-FEB-1992 17:34:00.61
XISYB.V18;1               1   4-FEB-1992 17:34:00.80
XISYB.V2;1              900   4-FEB-1992 17:33:56.36
XISYB.V3;1              900   4-FEB-1992 17:33:56.62
XISYB.V4;1              900   4-FEB-1992 17:33:56.94
XISYB.V5;1              900   4-FEB-1992 17:33:57.18
XISYB.V6;1              900   4-FEB-1992 17:33:57.38
XISYB.V7;1              900   4-FEB-1992 17:33:57.59
XISYB.V8;1              900   4-FEB-1992 17:33:57.92
XISYB.V9;1              900   4-FEB-1992 17:33:58.20

Total of 20 files, 13094 blocks. 


The on-line data noted above are available in our anonymous account. The 
CDAW 9 catalog and information files therein are listed below.

Directory ANON_DIR:[SPACE_PHYSICS.CDAW]

CDAW_9_DATA_SETS.TXT;2        23  18-MAY-1994 17:00:22.27
CDAW_9_GRND_STATIONS.TXT;1    20   6-APR-1994 12:50:01.76
CDAW_9_VARIABLES.TXT;1       477  17-DEC-1993 15:02:00.44


4. In the CDF named ZFI, data from Sodankyla is listed as being in X,Y,Z
coordinates but it is thought to be in HDZ at least for Event B.