GPS Space Vehicle Time Integrity for MJD 51787

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

ABCDEFGHIJK
PRNBlock
no.		StartEndMeasure-
ments		UTC(PSB)
-GPSSV (ns)		UTC(PSB)
-SV (ns)		Std.Dev.
(ns)		Outliers
> 4 s		Outliers
> 500 ns		Health 
1
1
12:03
17:43
 20,454
 -1,931
  -144,505
12
0
0
0
 
2
1
17:44
23:33
 20,912
 -1,938
   261,645
24
0
0
0
 
3
1
09:07
14:58
 21,045
 -1,924
   -37,773
37
0
0
0
 
4
4
1
2
00:00
17:18
02:22
23:59
  8,516
 24,117
 -1,909
 -1,938
  -379,145
  -381,585
79
243
1
0
1
0
0
0
 
5
5
1
2
00:00
22:10
05:24
23:59
 19,398
  6,548
 -1,922
 -1,955
  -264,832
  -264,974
6
10
5
65
0
0
0
0
 
6
1
01:01
05:24
 15,754
 -1,913
    -1,927
8
163
0
0
 
7
7
1
2
00:00
15:58
01:00
23:59
  3,608
 28,887
 -1,933
 -1,935
  -108,415
  -106,634
37
199
1
0
1
0
0
0
 
8
1
15:58
21:52
 21,230
 -1,943
  -455,712
244
0
0
0
 
9
9
1
2
00:00
22:03
05:24
23:59
 19,405
  7,015
 -1,926
 -1,950
     4,040
     4,143
15
7
2
30
0
0
0
0
 
10
10
1
2
00:00
20:20
02:17
23:59
  8,187
 13,191
 -1,926
 -1,951
   -57,964
   -58,027
9
5
2
28
0
0
0
0
 
11
1
12:29
18:27
 21,463
 -1,918
  -568,251
148
0
0
0
 
12
-
 
 
 
 
 
 
 
 
 
13
1
14:36
23:59
 33,837
 -1,940
   827,456
13
22
0
0
 
14
-
 
 
 
 
 
 
 
 
 
15
1
08:55
14:55
 21,637
 -1,897
  -855,842
12
114
0
0
 
16
-
 
 
 
 
 
 
 
 
 
17
1
02:40
05:24
  9,833
 -1,928
   269,470
8
44
0
0
 
18
-
 
 
 
 
 
 
 
 
 
19
1
13:34
17:43
 14,974
 -1,930
  -278,600
60
0
0
0
 
20
20
1
2
10:33
17:44
17:17
20:19
 24,204
  9,283
 -1,912
 -1,942
    59,030
    58,925
31
13
1
0
0
0
0
0
 
21
1
08:55
11:41
 10,001
 -1,934
   -17,090
11
126
0
0
 
22
1
08:55
13:33
 16,714
 -1,937
  -247,012
162
0
0
0
 
23
23
1
2
01:01
08:55
05:24
10:02
 15,761
  4,040
 -1,923
 -1,915
   -16,765
   -16,769
12
17
71
55
0
0
0
0
 
24
24
1
2
00:00
18:27
04:09
23:59
 14,913
 19,928
 -1,911
 -1,944
  -782,331
  -782,594
6
26
33
0
0
0
0
0
 
25
1
08:55
14:35
 20,408
 -1,932
    -9,759
13
97
0
0
 
26
1
00:00
04:31
 16,230
 -1,929
  -549,710
26
1
1
0
 
27
1
17:17
20:39
 12,110
 -1,951
   -31,632
6
3
0
0
 
28
1
09:07
12:28
 12,061
 -1,922
    52,127
52
0
0
0
 
29
29
1
2
04:09
10:01
05:24
12:28
  4,449
  8,822
 -1,913
 -1,922
   -22,667
   -23,544
52
91
1
0
1
0
0
0
 
30
1
02:17
05:24
 11,176
 -1,899
    33,628
12
0
0
0
 
31
1
12:29
16:27
 14,286
 -1,928
   -11,476
7
0
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(PSB) 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(PSB) 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.