Defects Index | Documentation Table of Contents
98/08/05 DEFECT in script page4
SYMPTOM: Standard error of unit weight and unweighted, estimated sample
standard deviation differed significantly from value compute
from data when double-difference decorrelation is on.
PROBLEM: A priori observation error (owght) was not correctly included
when decorrelation matrix was used.
CORRECTION: Changed getcor.f to correctly use observation error.
Changed rddata.f, where observation error had been applied,
for all cases, to match getcor.f.
FOUND BY: G. Mader 98/07/15
FIXED BY: S. Hilla and W. Dillinger 98/08/04
VERSION: 9808.05
SOURCE: /g1/HPUX.10/Src/Page4
/g1/HPUX.09/Src/Page4
EXECUTABLE: /g1/HPUX.10/Bin
/g1/HPUX.09/Bin
NOTES: Correcting the weighting resulted in "minor" changes to the
estimated parameters. The following differences are typical.
< old page4
> new page4
STANDARD ERROR OF UNIT WEIGHT
311c311
< STD. ERROR: .0569 M FROM 79644 OBSERVATIONS; 787 OMITTED
---
> STD. ERROR: .1139 M FROM 79644 OBSERVATIONS; 787 OMITTED
PHASE BIASES
460c460
< aaaf01 PRN01-01 94/02/16 14:59:30.00 4243244.04225( .00177)M .88+00 1
---
> aaaf01 PRN01-01 94/02/16 14:59:30.00 4243244.04232( .00177)M .88+00 1
STATION ADJUSTMENTS
1381c1381
< -.0007 -.0038 -.0016 NEU ADJ (M) FOR gode
---
> -.0006 -.0038 -.0014 NEU ADJ (M) FOR gode
TROPO ADJUSTMENTS
899,901c899,901
< gode ZEN WET 94/02/16 00:00:00.00 -.01285( .00142)M .47+00 202
< gode ZEN WET 94/02/16 02:00:00.00 -.03052( .00068)M .31+00 203
---
> gode ZEN WET 94/02/16 00:00:00.00 -.01279( .00142)M .47+00 202
> gode ZEN WET 94/02/16 02:00:00.00 -.03046( .00068)M .31+00 203
980806.page4
June 25, 1999
Steve Hilla