GPS Space Vehicle Time Integrity for MJD 51987

As viewed from the Measurement Standards Laboratory, Lower Hutt, New Zealand
Latitude -41.2348000 degrees, longitude 174.9175025 degrees, height 26.2 metres

ABCDEFGHIJK
PRNBlock
no.		StartEndMeasure-
ments		REF
-GPSSV (ns)		REF
-SV (ns)		Std.Dev.
(ns)		Outliers
> 4 s		Outliers
> 500 ns		Health 
1
1
02:10
07:50
 20,350
-20,192
  -189,312
27
1
0
0
 
2
1
07:31
13:54
 22,959
-20,189
   334,613
27
104
0
0
 
3
3
1
2
04:00
19:36
08:01
21:36
 14,397
  7,198
-20,188
-20,238
   -33,204
   -33,426
26
19
7
174
0
0
0
0
 
4
1
10:39
16:10
 19,898
-20,201
  -714,729
44
0
0
0
 
5
1
12:38
17:28
 17,358
-20,213
  -311,837
32
1
0
0
 
6
1
14:59
20:31
 19,909
-20,225
   -19,926
25
5
0
0
 
7
1
08:33
14:45
 22,207
-20,196
  -599,693
57
0
0
0
 
8
1
05:49
11:50
 21,659
-20,184
   -31,388
314
0
1698
0
 
9
9
1
2
10:58
19:52
14:37
23:18
 13,190
 12,397
-20,207
-20,227
    15,929
    15,962
24
19
36
206
0
0
0
0
 
10
1
14:07
19:27
 19,148
-20,210
   -21,406
35
0
0
0
 
11
11
1
2
00:00
07:51
02:39
11:22
  9,402
 12,675
-20,187
-20,187
   -21,686
   -21,689
22
23
38
0
0
0
0
0
 
12
-
 
 
 
 
 
 
 
 
 
13
1
03:19
08:42
 19,318
-20,188
   -19,526
21
37
0
0
 
14
14
1
2
00:00
20:32
02:39
23:59
  9,386
 12,395
-20,199
-20,235
    75,360
    75,513
23
18
48
328
0
0
0
0
 
15
-
 
 
 
 
 
 
 
 
 
16
-
 
 
 
 
 
 
 
 
 
17
1
16:31
22:58
 23,236
-20,224
   283,290
20
614
0
0
 
18
1
17:51
23:59
 22,089
-20,234
    34,611
86
0
0
0
 
19
-
 
 
 
 
 
 
 
 
 
20
1
00:53
05:42
 17,296
-20,186
    40,470
15
326
0
0
 
21
21
1
2
00:00
19:36
02:09
23:59
  7,643
 15,802
-20,204
-20,220
   -21,893
   -21,942
25
22
21
3
0
0
0
0
 
22
1
01:30
06:36
 18,286
-20,186
  -583,471
48
0
0
0
 
23
1
17:35
22:58
 19,392
-20,236
   -30,020
25
288
0
0
 
24
1
11:59
17:51
 21,055
-20,204
   -57,054
39
1
0
0
 
25
25
25
1
2
3
00:00
02:48
22:55
02:47
04:34
23:59
  9,921
  6,281
  3,897
-20,181
-20,199
-20,226
   -32,411
   -32,432
   -32,470
23
20
18
17
170
56
0
0
0
0
0
0
 
26
26
1
2
08:53
16:43
11:10
21:17
  8,242
 16,467
-20,183
-20,225
  -406,626
  -407,350
63
116
1
0
1
0
0
0
 
27
1
04:37
10:51
 22,477
-20,191
   -34,986
29
0
0
0
 
28
1
02:39
08:02
 19,251
-20,194
   -34,431
18
282
0
0
 
29
29
29
1
2
3
00:00
21:37
22:59
03:19
22:54
23:59
 11,844
  4,617
  3,632
-20,197
-20,237
-20,238
  -500,882
  -502,134
  -502,212
65
32
19
1
0
0
1
0
0
0
0
0
 
30
30
1
2
00:17
13:52
02:15
18:11
  7,013
 15,525
-20,195
-20,217
    -8,050
    -7,990
27
30
1
0
0
0
0
0
 
31
31
1
2
05:04
21:37
09:41
22:54
 16,616
  4,616
-20,176
-20,246
   -55,625
   -55,775
28
23
62
7
0
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.