GPS Space Vehicle Time Integrity for MJD 51781

As viewed from the CSIRO NML system installed at the Physics Dept, University of Western Australia, Perth, Australia
Latitude -31.9787720 degrees, longitude 115.8165830 degrees, height 67.0 metres

ABCDEFGHIJK
PRNBlock
no.		StartEndMeasure-
ments		REF
-GPSSV (ns)		REF
-SV (ns)		Std.Dev.
(ns)		Outliers
> 4 s		Outliers
> 500 ns		Health 
1
1
14:03
20:52
 24,558
178,187
    36,306
68
0
0
0
 
2
2
1
2
00:00
20:09
01:52
23:59
  6,708
 13,803
177,725
178,268
   438,261
   439,196
50
86
1
0
1
0
0
0
 
3
1
08:21
14:17
 21,366
178,087
   143,995
79
0
0
0
 
4
4
1
2
01:19
16:41
04:56
20:51
 13,014
 14,968
177,791
178,153
  -181,553
  -183,186
125
162
1
0
1
0
0
0
 
5
1
00:17
07:33
 26,160
177,864
   -84,278
77
0
0
0
 
6
1
03:01
10:08
 25,632
177,954
   177,925
72
0
0
0
 
7
7
7
1
2
3
00:00
14:55
22:03
03:00
17:01
23:59
 10,800
  7,559
  6,976
177,784
178,096
178,245
    58,775
    60,306
    61,055
68
71
112
1
0
0
1
0
0
0
0
0
 
8
1
18:17
23:59
 20,569
178,228
  -255,501
233
0
0
0
 
9
1
00:00
05:43
 20,611
177,851
   182,977
84
1
0
0
 
10
10
1
2
05:12
20:09
07:40
23:59
  8,873
 13,813
177,874
178,218
   122,160
   122,475
37
55
1
0
0
0
0
0
 
11
1
11:58
17:01
 18,199
178,194
  -376,859
100
0
0
0
 
12
-
 
 
 
 
 
 
 
 
 
13
1
17:10
23:52
 24,121
178,213
  1,006,280
69
0
0
0
 
14
-
 
 
 
 
 
 
 
 
 
15
1
07:43
15:08
 26,742
178,080
  -673,602
63
0
0
0
 
16
-
 
 
 
 
 
 
 
 
 
17
1
04:48
10:56
 22,102
177,978
   448,547
70
1
0
0
 
18
-
 
 
 
 
 
 
 
 
 
19
1
15:44
21:49
 21,863
178,198
   -92,796
107
0
0
0
 
20
1
12:35
18:16
 20,438
178,187
   241,369
55
0
0
0
 
21
1
08:10
14:02
 21,155
178,085
   163,205
72
0
0
0
 
22
22
1
2
07:01
17:02
11:57
18:16
 17,786
  4,471
178,018
178,097
   -50,129
   -51,017
144
62
1
0
1
0
0
0
 
23
23
1
2
00:04
06:52
01:19
11:58
  4,522
 18,315
177,672
178,025
   163,086
   163,428
49
69
0
0
0
0
0
0
 
24
24
1
2
01:50
18:17
06:10
20:09
 15,576
  6,711
177,840
178,130
  -600,787
  -600,693
51
47
0
0
0
0
0
0
 
25
25
1
2
05:01
13:07
08:20
17:07
 11,939
 14,383
177,905
178,123
   170,258
   170,468
55
55
0
0
0
0
0
0
 
26
26
1
2
00:00
21:55
03:21
23:59
 12,073
  7,461
177,811
178,213
  -366,238
  -366,408
68
67
0
0
0
0
0
0
 
27
1
17:02
23:20
 22,689
178,204
   149,012
61
0
0
0
 
28
28
28
1
2
3
08:54
10:57
17:10
10:08
12:44
20:09
  4,420
  6,428
 10,742
178,013
178,060
178,124
   238,717
   238,653
   238,398
46
59
64
0
0
0
0
0
0
0
0
0
 
29
29
1
2
02:33
10:08
05:11
14:38
  9,503
 16,202
177,792
178,087
   176,703
   175,837
87
158
1
0
1
0
0
0
 
30
1
01:59
08:53
 24,855
177,914
   212,639
102
0
0
0
 
31
1
10:09
15:25
 18,966
178,130
   169,307
76
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 local reference minus GPS satellite time during the block (A constant offset over the course of a day is to be expected).
G: Average value of local reference 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.