
                              FORMAT OF USGS/NEIC HDS FILE (VX-format)


Char. Pos.       Description
 1-5             Catalog source (a5)
 6               Blank
 7-24            EVENT TIME, in YYYY MMDDHHmmSS.ss format
25-26            Coordinate quality
27-33            LATITUDE, in -DD.ddd format
34-41            LONGITUDE, in -DDD.ddd format
42-46            DEPTH, in DDD.d format
 47              depth control designator
48-49            number of depth phases used and other HYPOCENTER QUALITY INDICATORS
54-56            GS AVERAGE MB, in D.d format
57-58            number of amplitudes used
59-61            GS AVERAGE MS, in D.d format
 62              Z/H component
63-64            number of amplitudes used
65-68            CONTRIBUTED MAGNITUDE NUMBER 1, in D.dd format
69-70            magnitude type (MW, ME, MS, MB, ML, LG, RG, MD or CL)
71-75            contributor (left justified a5 format)
76-79            CONTRIBUTED MAGNITUDE NUMBER 2, in D.dd format
80-81            magnitude type (MW, ME, MS, MB, ML, LG, RG, MD or CL)
82-86            contributor (left justified a5 format)
87-89            FLINN-ENGDAHL GEOGRAPHIC REGION NUMBER
90-92            Sta.No./Qual(a3)
 93              MAXIMUM INTENSITY (a1 format - 1-9, X, E or T)
94-115           FLAGS on macroseismic and other info
