GPS Space Vehicle Time Integrity for MJD 52957

As viewed from the Productivity and Standards Board, Singapore
Latitude 1.2919490 degrees, longitude 103.7855042 degrees, height 67.1 metres

ABCDEFGHIJK
PRNBlock
no.		StartEndMeasure-
ments		UTC(SG)
-GPSSV (ns)		UTC(SG)
-SV (ns)		Std.Dev.
(ns)		Outliers
> 4 s		Outliers
> 500 ns		Health 
1
1
03:51
09:50
 21,533
   -34
  -315,270
44
0
0
0
 
2
1
00:44
09:10
 30,332
   -27
   221,163
70
0
0
0
 
3
1
01:15
07:24
 22,158
   -29
   -61,438
42
0
0
0
 
4
1
09:11
16:07
 24,992
   -34
     9,238
55
0
0
0
 
5
1
14:14
23:58
 35,060
   -38
    -5,058
44
0
0
0
 
6
6
1
2
00:00
17:00
02:12
23:59
  7,905
 25,167
   -36
   -42
     1,391
     1,392
39
39
0
0
0
0
0
0
 
7
1
07:25
16:48
 33,781
   -32
  -643,460
43
0
0
0
 
8
1
09:50
14:00
 14,973
   -30
  -400,630
38
0
0
0
 
9
1
16:08
22:18
 22,204
   -41
    16,746
40
0
0
0
 
10
1
12:12
17:51
 20,319
   -34
   -34,376
39
0
0
0
 
11
1
05:05
10:44
 20,346
   -34
   -77,514
41
0
0
0
 
12
-
 
 
 
 
 
 
 
 
 
13
1
05:05
14:16
 33,099
   -42
    31,787
41
0
0
0
 
14
14
1
2
00:00
19:56
05:04
23:59
 18,244
 14,591
   -34
   -40
    18,913
    18,887
39
39
0
0
0
0
0
0
 
15
15
15
1
2
3
00:00
01:30
21:45
01:15
02:57
23:59
  4,483
  5,185
  8,043
   -28
   -44
   -31
  -185,514
  -185,559
  -185,935
42
33
39
0
1
0
0
0
0
0
0
0
 
16
1
00:00
05:33
 20,003
   -34
   -10,880
42
0
0
0
 
17
17
17
1
2
3
12:40
14:32
17:51
14:16
16:07
21:45
  5,758
  5,696
 14,013
   -38
   -29
   -40
   -62,872
   -62,623
   -62,053
76
70
152
0
0
0
0
0
0
0
0
0
 
18
18
18
1
2
3
00:00
17:51
20:07
02:08
19:02
23:59
  7,671
  4,273
 13,957
   -39
   -38
   -40
    -4,171
    -4,077
    -4,059
39
37
39
0
0
0
0
0
0
0
0
0
 
19
-
 
 
 
 
 
 
 
 
 
20
20
1
2
02:24
05:34
05:04
12:10
  9,612
 23,771
   -28
   -43
   204,101
   204,057
37
39
0
0
0
0
0
0
 
21
1
19:03
23:59
 17,781
   -37
   -64,480
40
0
0
0
 
22
-
 
 
 
 
 
 
 
 
 
23
-
 
 
 
 
 
 
 
 
 
24
24
1
2
10:44
17:00
16:48
19:57
 21,829
 10,637
   -37
   -46
   -75,068
   -75,127
43
40
0
0
0
0
0
0
 
25
25
1
2
00:00
21:45
07:03
23:59
 25,401
  8,050
   -35
   -40
   -55,253
   -55,301
40
38
0
0
0
0
0
0
 
26
26
1
2
14:32
16:08
16:04
19:02
  5,487
 10,482
   -34
   -33
  -497,408
  -497,355
38
42
0
0
0
0
0
0
 
27
1
07:04
12:34
 19,825
   -33
  -797,222
145
0
0
0
 
28
28
1
2
09:11
14:17
14:00
15:18
 17,363
  3,661
   -30
   -37
    -3,325
    -3,359
41
41
0
0
0
0
0
0
 
29
1
16:04
19:19
 11,684
   -39
  -162,032
57
0
0
0
 
30
30
30
30
1
2
3
4
00:00
16:04
20:17
22:19
01:30
17:51
21:45
23:59
  5,394
  6,377
  5,238
  6,054
   -29
   -34
   -41
   -36
  -630,095
  -631,487
  -631,841
  -632,021
58
61
51
56
1
0
0
0
1
0
0
0
0
0
0
0
 
31
1
02:51
08:54
 21,753
   -28
  -433,233
39
2
0
0
 
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(SG) 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(SG) 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.