GPS Space Vehicle Time Integrity for MJD 51817

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
10:02
15:41
 20,295
 -2,018
  -148,568
10
0
0
0
 
2
1
15:41
21:30
 20,938
 -2,030
   275,071
23
0
0
0
 
3
1
07:04
13:06
 21,715
 -2,026
   -46,661
45
0
0
0
 
4
1
15:08
22:00
 24,687
 -2,029
  -463,518
223
0
0
0
 
5
5
1
2
00:00
20:05
05:45
23:59
 20,728
 14,035
 -2,034
 -2,052
  -269,087
  -269,236
11
17
29
40
0
0
0
0
 
6
6
1
2
00:00
05:46
05:37
07:04
 20,214
  4,650
 -2,033
 -2,016
    -2,005
    -1,987
12
7
1
4
0
0
0
0
 
7
1
13:55
22:00
 29,083
 -2,027
  -151,708
473
0
11206
0
 
8
8
1
2
13:55
15:41
15:08
19:49
  4,352
 14,876
 -2,016
 -2,023
  -548,270
  -548,661
51
133
0
0
0
0
0
0
 
9
9
1
2
00:00
19:53
04:10
22:00
 14,987
  7,601
 -2,030
 -2,037
     8,221
     8,340
9
12
1
0
0
0
0
0
 
10
1
18:19
22:00
 13,276
 -2,038
   -59,454
11
0
0
0
 
11
1
10:11
16:23
 22,317
 -2,016
  -622,914
137
0
0
0
 
12
-
 
 
 
 
 
 
 
 
 
13
1
11:24
20:43
 33,542
 -2,019
   827,291
20
0
0
0
 
14
-
 
 
 
 
 
 
 
 
 
15
15
1
2
03:23
10:32
10:10
11:46
 24,429
  4,412
 -2,012
 -2,019
  -867,028
  -867,103
17
18
0
0
0
0
0
0
 
16
-
 
 
 
 
 
 
 
 
 
17
1
00:38
06:26
 20,840
 -2,039
   273,887
21
32
0
0
 
18
-
 
 
 
 
 
 
 
 
 
19
1
13:07
15:41
  9,156
 -2,026
  -308,431
29
0
0
0
 
20
1
08:32
18:18
 35,166
 -2,016
    51,122
25
0
0
0
 
21
1
04:10
09:39
 19,724
 -2,020
   -18,652
12
0
0
0
 
22
1
05:37
10:10
 16,372
 -2,023
  -322,861
139
0
0
0
 
23
1
00:00
07:58
 28,716
 -2,038
    -2,210
13
8
0
0
 
24
24
1
2
00:00
16:24
02:05
22:00
  7,495
 20,181
 -2,036
 -2,034
    -6,949
    -7,142
6
34
6
0
0
0
0
0
 
25
1
04:10
12:45
 30,812
 -2,036
   -10,633
9
1
0
0
 
26
26
1
2
00:00
20:43
02:25
22:00
  8,681
  4,607
 -2,039
 -2,052
  -562,326
  -562,547
7
11
1
0
0
0
0
0
 
27
27
1
2
12:46
15:08
13:55
18:29
  4,145
 12,013
 -2,050
 -2,031
   -34,424
   -34,419
14
5
0
72
0
0
0
0
 
28
28
1
2
07:04
12:46
10:32
13:55
 12,445
  4,144
 -2,014
 -2,043
    25,167
    24,993
43
6
0
3
0
0
0
0
 
29
29
1
2
02:06
07:56
07:04
10:00
 17,884
  7,399
 -2,040
 -2,023
  -114,973
  -115,491
177
65
0
0
0
0
0
0
 
30
1
00:12
04:10
 14,242
 -2,042
    37,830
12
1
0
0
 
31
1
10:11
14:30
 15,547
 -2,031
   -15,105
12
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.