GPS - SIMT(LNM) for 2021-04-23
(as received at Centro Nacional de Metrologia de Guatemala)


1 Day Averages 1 Hour Averages 10 Minute Averages Next Date Last Date    


GPS - SIMT(LNM)
(one-hour averages using all satellites in view)
Hours Mean Time
Offset (ns)		 Range (ns) Frequency Offset Confidence (r)
24 -34.31 22.10 +1.61 x 10-13 +0.55




Allan Deviation
Averaging Period ()
(hours, minutes)		 Samples Frequency
Stability
0 h, 10 min 142 4.63 x 10-12
0 h, 20 min 140 3.85 x 10-12
0 h, 40 min 136 2.40 x 10-12
1 h, 20 min 128 1.49 x 10-12
2 h, 40 min 112 9.82 x 10-13
5 h, 20 min 80 4.79 x 10-13


Time Deviation
Averaging Period ()
(hours, minutes)		 Samples Time
Stability (ns)
0 h, 10 min 142 1.60
0 h, 20 min 139 2.16
0 h, 40 min 133 2.42
1 h, 20 min 121 2.82
2 h, 40 min 97 4.21
5 h, 20 min 49 5.14


GPS PRN - SIMT(LNM)
(data from individual GPS satellites)
GPS
PRN		 Minutes
(In-View)		 Mean Time
Offset		 Range (ns) Time
Deviation		 Frequency Offset Confidence (r) View
Track
1 340 -25.35 26.39 2.13 +4.5 x 10-13 +0.67 View
2 340 -29.19 17.13 1.42 +5.6 x 10-14 +0.41 View
3 180 -35.82 36.84 1.11 +1.2 x 10-12 +0.98 View
4 --- --- ---------- ------- -------------- ------ ----
5 340 -31.05 26.39 2.74 +1.5 x 10-14 +0.13 View
6 340 -24.67 51.34 2.81 +1.7 x 10-12 +0.85 View
7 300 -29.29 28.81 2.27 -7.5 x 10-13 -0.55 View
8 270 -37.40 31.11 1.03 +1.8 x 10-12 +0.87 View
9 220 -35.80 23.18 1.35 +1.6 x 10-12 +0.90 View
10 410 -37.75 16.23 2.17 -1.2 x 10-13 -0.21 View
11 --- --- ---------- ------- -------------- ------ ----
12 200 -31.21 14.06 1.43 +8.2 x 10-14 +0.75 View
13 350 -33.86 21.19 1.78 -1.1 x 10-13 -0.70 View
14 460 -24.74 26.50 2.36 -2.6 x 10-13 -0.34 View
15 310 -37.14 20.78 1.51 -1.9 x 10-13 -0.71 View
16 270 -44.93 26.66 2.29 +8.3 x 10-13 +0.59 View
17 320 -21.18 44.54 2.28 +1.1 x 10-12 +0.73 View
18 300 -40.55 15.92 1.33 +2.7 x 10-13 +0.33 View
19 360 -28.99 45.95 2.31 +1.7 x 10-13 +0.30 View
20 400 -38.04 12.13 1.26 -8.4 x 10-14 -0.39 View
21 320 -29.27 34.77 1.48 +9.0 x 10-13 +0.97 View
22 230 -48.49 16.22 2.07 +4.8 x 10-13 +0.62 View
23 260 -38.00 15.59 1.70 -1.3 x 10-13 -0.28 View
24 320 -29.32 15.31 1.41 +1.3 x 10-13 +0.75 View
25 220 -32.56 13.41 1.70 +2.1 x 10-15 +0.01 View
26 300 -43.49 16.49 1.48 +1.3 x 10-13 +0.14 View
27 310 -35.74 31.48 1.74 +2.5 x 10-13 +0.39 View
28 250 -25.09 19.52 1.44 -5.0 x 10-13 -0.77 View
29 250 -41.17 12.26 1.26 -4.1 x 10-13 -0.58 View
30 250 -35.42 30.10 2.51 -5.5 x 10-13 -0.27 View
31 330 -43.90 16.40 2.22 +3.2 x 10-13 +0.38 View
32 350 -39.94 13.09 1.35 +2.0 x 10-13 +0.45 View


Legend
GPS PRNThe unique pseudo random noise (PRN) code (1 to 32) used to identify each satellite. If no satellite is assigned to a given PRN code, then no data are shown.
Minutes
(In-View)		The number of minutes when the satellite was visible. During this period, the time difference between the satellite clock and SIMT(LNM) is measured every second, and 10 minute averages are stored. Since data is recorded in 10 minute segments, the values are even multiples of 10 minutes.
Mean Time
Offset		The mean time offset (nanoseconds) of the 10-minute averages recorded from each satellite.
RangeThe difference between the maximum and minimum time offset values (nanoseconds).
Time
Deviation		The time deviation (TDEV) of the 10-minute averages (nanoseconds).
Frequency
Offset		The estimated frequency offset of the satellite clock with respect to SIMT(LNM). This estimate is obtained by fitting a least squares line to all of the recorded data.
Confidence
Level (r)		The confidence level of the estimated frequency offset. The confidence level is the correlation coefficient (r) of the least squares line fitted to the data.
View
Track		Clicking on the View link displays a plot of data from the selected satellite. The number of previous days shown equals the number of previous days shown on this page, up to a maximum of 30 days.