[teqc] understanding qc indicators in the ASCII time plot

Lou Estey lou at unavco.org
Thu Jan 18 06:33:53 MST 2018


Harvey,

See http://www.unavco.org/software/data-processing/teqc/tutorial/tutorial.html#sec_21

But basically, any 'o' for GPS is good and '+' means you even have good data below the elevation
cutoff angle (10 degrees by default). 'L' is loss-of-lock, as logged by the receiver format,
and having these at low elevation is normal.

cheers,
--lou

On 18-Jan-18 06:24 AM, harvey mada chilembwe wrote:
> Dear Louis
> Happy new year.
> I was going through the TEQC manual to find out the meaning of L++00 and 00+L but could not find any. in the attachement I have many of 
> these characters does it mean my data is not good?
> 
>   SV+--------|--------|--------|--------|--------|--------|--------|--------|+ SV
> 
>    2|                        L+++ooooooooooooooooooooooo+L_                  |  2
> 
>    3|Loooooooooooooooo+++LL_                                            L+ooo|  3
> 
>    4|                 L++oooooooooooooooooooooooooo+L                        |  4
> 
>    5|                           LL+oooooooooooooooooooooooooo+L              |  5
> 
>    6|Looooooooooooo+LL                                                L++oooo|  6
> 
>    7|        _L+oooooooooooooooo++LLL++LL+++++L_                             |  7
> 
>    8|             L+oooooooooooooooo++++oooooooooo+L                         |  8
> 
>    9|                                        L++oooooooooooooooo+LL_         |  9
> 
>   10|                       +L+ooooooooooooooooooooooo+LL_                   | 10
> 
>   11|     L+ooooooooooooooooooooo+++L_                                       | 11
> 
>   regards


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