A summary of supporting and secondary databases and the approximate size is provided in the following table. Certain database sets are automatically included when a Software installation or full upgrade is performed (described in previous section). All database files are also available on Exabyte tape (``ydb tape'') To receive a tape containing the mission-long Yohkoh database and to be placed on the distribution list for future releases, send e-mail:
TO: firstname.lastname@example.org SUBJ: ydb tape request
The IDL routine RD_YDBTAP (described in the User's Guide) can be used to extract and install user specified portions (or all) of the Yohkoh database from the ydb tape. That routine will optionally provide assistance in setting up and customizing the local environment prior to extraction and installation. The physical disk locations where each database resides at any given site are flexible since all software references are through the use of environmentals (Unix) or logicals (VMS). The IDL routine HELP_PREFIX provides some additional information about the specific database contents.
This table can be used to estimate current and future disk space requirements for the Yohkoh database. Unless otherwise noted, the distributed files contain one week of data. Column one (PFX) indicates the three letter prefix associated with each database set. Items marked with an asterisk are included in the automatic software installation procedure described in the preceding sections.
PFX Contents Avg File Size Mission Size (Thru 1/94) ATR Raw S/C Attitude Database 2684 Kb 314.6 Mb ATT Processed S/C Attitude Database 2024 Kb 237.2 Mb EVN* Yohkoh Event Log 14 Kb 1.8 Mb FEM* Yohkoh Orbital Ephemeris 7 Kb 1.2 Mb G6D GOES 3 Sec Light Curve for S/C 6 2725 Kb 181.0 Mb G7D GOES 3 Sec Light Curve for S/C 7 2742 Kb 182.2 Mb GBE GRO BATSE Event Log 19525 Kb  19.1 Mb GBL* GRO BATSE Light Curves 143 Kb 19.1 Mb GEV* GOES Event Log 5 Kb 0.7 Mb GXD GOES Derived One Minute Light Curve Data 5 Kb 0.0 Mb GXT* GOES One Minute Light Curve Data 330 Kb 40.0 Mb NAR* NOAA Active Region 3 Kb 0.4 Mb OBD BCS Observing Log 690 Kb 81.7 Mb OSF SXT Full Frame Observing Log 52 Kb 6.3 Mb OSP SXT Partial Frame Observing Log 385 Kb 45.6 Mb OWH WBS/HXT Observing Log 1266 Kb 150.9 Mb SDC SXT Dark Current Images 1827 Kb 201.7 Mb SDW SXT Dark Current Images for Warm CCD 5196 Kb 81.2 Mb SFC SXT FFI Calibration (Leak) Image 528 Kb 4.2 Mb SFM SXT FFI Monthly File (daily SFD image) 6506 Kb [M] 158.9 Mb SSC SXT Synoptic Images (centered) 697 Kb 77.6 Mb SSE SXT Synoptic Images (east of center) 703 Kb (inc) SSW SXT Synoptic Images (west of center) 703 Kb (inc) XAD* Exabyte ASCII Directory for Archive Tape 10 Kb 2.1 Mb XBD* Exabyte Binary Directory for Archive Tape 7 Kb 1.5 Mb  - only 1 file for mission [M] - each file contains one month of data
The following table indicates which datasets are important for various purposes.