GPS Space Vehicle Time Integrity for MJD 51846

As viewed from the National Institute of Metrology, Thailand
Latitude 13.7645066 degrees, longitude 100.5282384 degrees, height 13.0 metres

ABCDEFGHIJK
PRNBlock
no.		StartEndMeasure-
ments		UTC(NIMT)
-GPSSV (ns)		UTC(NIMT)
-SV (ns)		Std.Dev.
(ns)		Outliers
> 4 s		Outliers
> 500 ns		Health 
1
-
 
 
 
 
 
 
 
 
 
2
-
 
 
 
 
 
 
 
 
 
3
-
 
 
 
 
 
 
 
 
 
4
-
 
 
 
 
 
 
 
 
 
5
1
00:10
04:13
 14,421
  -139
  -270,581
51
0
0
0
 
6
1
00:00
01:50
  6,643
  -142
     -193
50
0
0
0
 
7
-
 
 
 
 
 
 
 
 
 
8
-
 
 
 
 
 
 
 
 
 
9
1
00:00
02:46
  9,983
  -142
    14,630
51
0
0
0
 
10
-
 
 
 
 
 
 
 
 
 
11
-
 
 
 
 
 
 
 
 
 
12
-
 
 
 
 
 
 
 
 
 
13
-
 
 
 
 
 
 
 
 
 
14
-
 
 
 
 
 
 
 
 
 
15
1
00:51
04:54
 14,507
  -130
    -9,282
51
0
0
0
 
16
-
 
 
 
 
 
 
 
 
 
17
1
00:00
03:50
 13,796
  -125
   280,393
52
0
0
0
 
18
-
 
 
 
 
 
 
 
 
 
19
-
 
 
 
 
 
 
 
 
 
20
-
 
 
 
 
 
 
 
 
 
21
1
00:51
04:54
 14,506
  -123
   -18,024
54
0
0
0
 







23
1
01:51
04:54
 10,908
  -129
    -2,080
51
0
0
0







24
-
 
 
 
 
 
 
 
 
 







25
1
02:47
04:54
  7,561
  -123
    -9,290
50
0
0
0














27
-
 
 
 
 
 
 
 
 
 







28
-
 
 
 
 
 
 
 
 
 







29
1
00:00
04:54
 17,591
  -137
  -193,562
154
0
0
0







30
1
00:34
04:54
 15,516
  -130
    44,032
53
0
0
0







31
-
 
 
 
 
 
 
 
 
 







32
-
 
 
 
 
 
 
 
 
 







33
-
 
 
 
 
 
 
 
 
 







34
-
 
 
 
 
 
 
 
 
 







35
-
 
 
 
 
 
 
 
 
 







36
-
 
 
 
 
 
 
 
 
 







37
-
 
 
 
 
 
 
 
 
 







38
-
 
 
 
 
 
 
 
 
 







39
-
 
 
 
 
 
 
 
 
 







40
-
 
 
 
 
 
 
 
 
 







A: Space vehicle identification number.

B: The period when the satellite was in view. Each of these measurement blocks is a series of
measurements longer than 60 minutes, containing no breaks of more than 60 seconds.


C: Time at the start of the block (UTC).

D: Time at the end of the block (UTC).

E: Number of 1 second pseudorange measurements in the block.

F: Average value of UTC(NIMT) minus GPS satellite time during the block
   (A constant offset over the course of a day is to be expected).

G: Average value of UTC(NIMT) minus space vehicle time during the block, in nanoseconds.

H: Standard deviation of G during the block, in nanoseconds.

I: Number of measurements more than 4 standard deviations from the average.

J: Number of measurements more than 500 ns from the average.

K: Number of non-zero health flags in the block.