[Git][NTPsec/ntpsec][master] ntpiz.py: Improve description of TDOP.

[Gary E. Miller]

Gary E. Miller pushed to branch master at NTPsec / ntpsec


Commits:
eda087c4 by Gary E. Miller at 2019-11-26T00:28:16Z
ntpiz.py: Improve description of TDOP.

- - - - -


1 changed file:

- ntpclients/ntpviz.py


Changes:

=====================================
ntpclients/ntpviz.py
=====================================
@@ -798,9 +798,10 @@ plot \\
 The number of visible satellites (nSat) is plotted in red.</p>
 <p>TDOP is field 3, and nSats is field 4, from the gpsd log file.  The
 gpsd log file is created by the ntploggps program.</p>
-<p>TDOP is a dimensionless error factor.  TDOP ranges from 1 to greater
-than 20.  1 denotes the highest possible confidence level.  2 to 5 is good.
-Greater than 20 means there will be significant inaccuracy and error.</p>
+<p>TDOP is a dimensionless error factor.  Smaller numbers are better.
+TDOP ranges from 1 (ideal), 2 to 5 (good), to greater than 20 (poor).
+Some GNSS receivers report TDOP less than one which is theoretically
+impossible.</p>
 """
 
         ret = {'html': VizStats.table_head + stats.table +



View it on GitLab: https://gitlab.com/NTPsec/ntpsec/commit/eda087c4fd368545a76e107aaeb09cb276d01a8a

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View it on GitLab: https://gitlab.com/NTPsec/ntpsec/commit/eda087c4fd368545a76e107aaeb09cb276d01a8a
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