Leica SpiderQC v4.2 Quality Report


Program Run: 2013/04/05 00:10:29.28

File Details:


Observation File: agui0940.13o
GPS Navigation File: agui0940.13n
GLONASS Navigation File: agui0940.13g
Quality Testing:  Pass 

Station Details:


Marker Name/Number:  AGUI  31322M001   
Observer/Agency:       
Receiver #/Type/Vers:  495473  LEICA GRX1200+GNSS  8.51/6.110 
Antenna #/Type:  09260119  LEIAX1203+GNSS NONE   
Antenna Offsets (HEN):  0.000  0.000  0.000 
Approx Position (XYZ):  5437265.719  -1502353.293  2967249.534 
Approx Position (plh):  27° 54' 13.95044" N  15° 26' 45.00924" W  329.038m 
Diff. Est-Header:  6.0 m dX  -8.6 m dY  8.7 m dZ 
Diff. Est-Header:  13.6 m (2880 estimates) 

Session Summary:


Time of first obs:  2013/04/04 00:00:00.00 GPS 
Time of last obs:  2013/04/04 23:59:30.00 GPS 
Session length:  23.99 hours 
GPS week:  1734, day 4 
Observation interval:  30.00 seconds 
UTC leap seconds:  16 seconds 

Num SVs with obs:  53 
Num SVs with nav:  56 
Total GPS orbits:  181 
Total GLONASS orbits:  372 
Total Galileo orbits: 
SVs with obs:  G1 G2 G3 G4 G5 G6 G7 G8 G9 G10 G11 G12 G13 G14 G15 G16 G17 G18 G19 G20 G21 G22 G23 G24 G25 G26 G28 G29 G31 G32 R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R15 R16 R17 R18 R19 R20 R21 R22 R23 R24  
SVs without obs:  G27 G30 R14 E1 E2 E3 E4 E5 E6 E7 E8 E9 E10 E11 E12 E13 E14 E15 E16 E17 E18 E19 E20 E21 E22 E23 E24 E25 E26 E27 E28 E29 E30 E31 E32 E33 E34 E35 E36 E37 E38 E39 E40 E41 E42 E43 E44 E45 E46 E47 E48 E49 E50 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16 S17 S18 S19 S20  
SVs with nav:  G1 G2 G3 G4 G5 G6 G7 G8 G9 G10 G11 G12 G13 G14 G15 G16 G17 G18 G19 G20 G21 G22 G23 G24 G25 G26 G27 G28 G29 G30 G31 G32 R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 R18 R19 R20 R21 R22 R23 R24  
SVs without nav:   
User Disabled SVs:  None 
Meteo epochs: 
Auxiliary epochs: 

Quality Testing:


  Pass/Fail   Details 
General Tests 
Epochs With Data:  Pass  Value 100.0 %, Threshold 99.0 % 
File Format:  Pass   
RX Clock:  Pass   
Other:  Pass   
     
GPS Specific Tests 
Cycle Slips:  Pass  Value 28 slips, Threshold 43 slips 
Multipath:  Pass  Value 0.27m MP1 / 0.32m MP2, Threshold 0.5 m 
Data Completeness:  Pass  Value 99.1 %, Threshold 95.0 % 
Navigation Data:  Pass   
     
GLONASS Specific Tests 
Cycle Slips:  Pass  Value 20 slips, Threshold 100 slips 
Multipath:  Pass  Value 0.25m MP1 / 0.34m MP2, Threshold 0.5 m 
Data Completeness:  Pass  Value 99.3 %, Threshold 90.0 % 
Navigation Data:  Pass   

General Quality Indicators:


Tracking   
Num obs > 0°:  43034 
Num possible obs > 0°:  51297 
Num obs with invalid nav: 
Num obs without nav: 
Num obs to unhealthy SV: 
Num obs with WLF change: 
Num complete loss of lock: 

Num obs GPS > 0°:  24131 
Num obs GLONASS > 0°:  18903 
Num obs Galileo > 0°: 
Num obs All > 0°:  43034 

Epochs with < 5 SV > 15°:  (0.0 %) 
Epochs with all SV > 15°:  2769  (96.1 %) 
Epochs with full data > 15°:  2603  (90.4 %) 

Satellite Geometry 
DOP  Minimum  Maximum  Average 
PDOP  2.6  5.3  3.5 
GDOP  3.1  6.7  4.3 

Data Gaps 
Num epochs with data:  2880 
Num epochs without data: 
Data Gaps:  0.00 seconds 

List of Data Gaps (-) 
Duration  Start Time  End Time 
None     

Non-tracked satellites > 15° (^): 
SV  Time (minutes)  Epoch Range  Elevation Range  Azimuth Range 
G18  22.000  2042 / 2086  38.28° / 34.16°  257.39° / 245.51° 
G18  12.000  2124 / 2148  29.40° / 26.51°  236.33° / 231.75° 
Total:  34.000 (67 observations) 

Receiver Clock 
Clock Slips > 15°: 
Max RX clock offset:  0.000100 ms (at 2013/04/04 16:09:00.00) 
Num of RX clock resets: 
Total clock drift:  +0.000000 ms 
Rate of clock drift:  +0.000 ms/hr 
Av time between resets:  0.000 minute(s) 

Quality Indicators by Satellite System:


  Total  GPS  GLONASS  Galileo 
Tracking 
Num obs > 15°:  38096  21408  16688 
% obs > 15°:   99.7 %  99.5 %  100.0 % 
Num possible obs > 15°:  38207  21511  16696 
Num complete obs > 15°:  37892  21310  16582 
% complete obs > 15°:   99.2 %  99.1 %  99.3 % 
Average # SV per Epoch:  13.2   7.4   5.8  
         
Obs L2 : Obs L1:  0.996   0.998   0.994  
Obs L5 : Obs L1: 

Cycle Slips         
Num cycle slips > 15°:  48  28  20 
% slips per complete obs:  0.127 %  0.131 %  0.121 % 
Num complete obs per slip:  78942   76107   82910  
IOD Slips > 15°:  188  84  104 
Outliers > 15°: 
LLI L1 : Obs L1: 
LLI L2 : Obs L2:  0.0003   0.0005  
LLI L5 : Obs L5: 

Multipath         
MP1 RMS:  0.262 m  0.270 m  0.252 m 
MP2 RMS:  0.329 m  0.318 m  0.344 m 
MP5 RMS: 

Extended Quality Information:


Tracking by observation type > 15°: 
Type Code Phase SNR Doppler
L1 100.0 %
99.8 %
N/A N/A
L2 N/A 99.5 %
N/A N/A
L2P 99.7 %
N/A N/A N/A

Tracking by satellite > 15°: 
SV Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
G1 15.00° 55.15° 856 856 (100.0 %)
0 (0.0 %) 1
G2 15.14° 66.00° 585 585 (100.0 %)
0 (0.0 %) 0
G3 15.07° 60.86° 827 827 (100.0 %)
0 (0.0 %) 1
G4 15.01° 86.12° 664 664 (100.0 %)
0 (0.0 %) 0
G5 15.07° 83.41° 711 711 (100.0 %)
0 (0.0 %) 1
G6 15.01° 56.42° 868 868 (100.0 %)
0 (0.0 %) 1
G7 15.01° 53.83° 728 728 (100.0 %)
0 (0.0 %) 0
G8 15.10° 64.60° 574 574 (100.0 %)
0 (0.0 %) 0
G9 15.11° 79.83° 689 689 (100.0 %)
0 (0.0 %) 0
G10 15.05° 60.78° 827 827 (100.0 %)
0 (0.0 %) 1
G11 15.07° 60.02° 837 837 (100.0 %)
0 (0.0 %) 1
G12 15.00° 83.35° 691 691 (100.0 %)
0 (0.0 %) 0
G13 15.17° 78.26° 617 617 (100.0 %)
0 (0.0 %) 0
G14 15.01° 63.96° 571 567 (99.3 %)
0 (0.0 %) 2
G15 15.03° 69.96° 792 792 (100.0 %)
0 (0.0 %) 0
G16 15.02° 77.59° 738 738 (100.0 %)
0 (0.0 %) 0
G17 15.02° 60.74° 560 560 (100.0 %)
0 (0.0 %) 0
G18 15.04° 33.93° 536 465 (86.8 %)
0 (0.0 %) 3
G19 15.00° 59.71° 845 845 (100.0 %)
0 (0.0 %) 1
G20 15.07° 77.08° 746 746 (100.0 %)
0 (0.0 %) 0
G21 15.12° 58.61° 589 572 (97.1 %)
0 (0.0 %) 2
G22 15.01° 41.85° 813 811 (99.8 %)
0 (0.0 %) 2
G23 15.05° 68.63° 602 602 (100.0 %)
0 (0.0 %) 0
G24 15.07° 56.96° 850 850 (100.0 %)
0 (0.0 %) 1
G25 15.03° 66.85° 796 796 (100.0 %)
0 (0.0 %) 1
G26 15.10° 53.41° 830 830 (100.0 %)
0 (0.0 %) 1
G28 15.03° 35.66° 821 821 (100.0 %)
0 (0.0 %) 0
G29 15.05° 80.21° 634 634 (100.0 %)
0 (0.0 %) 0
G31 15.08° 84.98° 663 654 (98.6 %)
0 (0.0 %) 9
G32 15.01° 84.37° 651 651 (100.0 %)
0 (0.0 %) 0
R1 15.02° 70.18° 625 625 (100.0 %)
0 (0.0 %) 0
R2 15.04° 47.92° 766 766 (100.0 %)
0 (0.0 %) 0
R3 15.05° 50.48° 753 752 (99.9 %)
0 (0.0 %) 3
R4 15.02° 72.87° 611 611 (100.0 %)
0 (0.0 %) 0
R5 15.05° 82.36° 684 684 (100.0 %)
0 (0.0 %) 0
R6 15.01° 57.58° 826 826 (100.0 %)
0 (0.0 %) 1
R7 15.03° 60.56° 819 818 (99.9 %)
0 (0.0 %) 3
R8 15.02° 84.87° 654 654 (100.0 %)
0 (0.0 %) 0
R9 15.06° 49.32° 763 763 (100.0 %)
0 (0.0 %) 2
R10 15.09° 70.39° 781 775 (99.2 %)
0 (0.0 %) 7
R11 15.01° 84.40° 834 834 (100.0 %)
0 (0.0 %) 1
R12 15.00° 48.64° 853 853 (100.0 %)
0 (0.0 %) 0
R13 15.01° 61.21° 594 594 (100.0 %)
0 (0.0 %) 0
R15 15.07° 68.52° 618 618 (100.0 %)
0 (0.0 %) 0
R16 15.08° 48.33° 758 758 (100.0 %)
0 (0.0 %) 0
R17 15.04° 59.29° 604 604 (100.0 %)
0 (0.0 %) 0
R18 15.05° 37.39° 710 710 (100.0 %)
0 (0.0 %) 0
R19 15.02° 62.09° 560 560 (100.0 %)
0 (0.0 %) 0
R20 15.08° 86.64° 710 710 (100.0 %)
0 (0.0 %) 0
R21 15.05° 71.05° 975 975 (100.0 %)
0 (0.0 %) 1
R22 15.01° 49.59° 1037 1037 (100.0 %)
0 (0.0 %) 2
R23 15.06° 71.69° 622 622 (100.0 %)
0 (0.0 %) 0
R24 15.05° 84.49° 539 539 (100.0 %)
0 (0.0 %) 0

Missing phase observations by satellite > 15°: 
SV Observations Missing L1 Missing L2
G1 2.2 %
0.0 %
0.0 %
G2 1.5 %
0.0 %
0.0 %
G3 2.2 %
0.0 %
0.0 %
G4 1.7 %
0.0 %
0.0 %
G5 1.9 %
0.0 %
0.0 %
G6 2.3 %
0.0 %
0.0 %
G7 1.9 %
0.0 %
0.0 %
G8 1.5 %
0.0 %
0.0 %
G9 1.8 %
0.0 %
0.0 %
G10 2.2 %
0.0 %
0.0 %
G11 2.2 %
0.0 %
0.0 %
G12 1.8 %
0.0 %
0.0 %
G13 1.6 %
0.0 %
0.0 %
G14 1.5 %
1.9 %
3.0 %
G15 2.1 %
0.0 %
0.0 %
G16 1.9 %
0.0 %
0.0 %
G17 1.5 %
0.0 %
0.0 %
G18 1.2 %
0.6 %
0.6 %
G19 2.2 %
0.0 %
0.0 %
G20 2.0 %
0.0 %
0.0 %
G21 1.5 %
2.3 %
3.8 %
G22 2.1 %
0.7 %
1.2 %
G23 1.6 %
0.0 %
0.0 %
G24 2.2 %
0.0 %
0.0 %
G25 2.1 %
0.0 %
0.0 %
G26 2.2 %
0.0 %
0.0 %
G28 2.2 %
0.0 %
0.0 %
G29 1.7 %
0.0 %
0.0 %
G31 1.7 %
2.6 %
7.0 %
G32 1.7 %
0.0 %
0.0 %
R1 1.6 %
0.0 %
0.0 %
R2 2.0 %
0.0 %
0.0 %
R3 2.0 %
0.0 %
0.0 %
R4 1.6 %
0.0 %
0.0 %
R5 1.8 %
0.0 %
0.0 %
R6 2.2 %
0.0 %
0.0 %
R7 2.1 %
0.1 %
2.4 %
R8 1.7 %
0.0 %
0.0 %
R9 2.0 %
0.0 %
1.8 %
R10 2.0 %
1.0 %
7.6 %
R11 2.2 %
0.0 %
0.6 %
R12 2.2 %
0.0 %
0.0 %
R13 1.6 %
0.0 %
0.0 %
R15 1.6 %
0.0 %
0.0 %
R16 2.0 %
0.0 %
0.0 %
R17 1.6 %
0.0 %
0.0 %
R18 1.9 %
0.0 %
0.0 %
R19 1.5 %
0.0 %
0.0 %
R20 1.9 %
0.0 %
0.0 %
R21 2.6 %
0.0 %
0.0 %
R22 2.7 %
0.0 %
0.8 %
R23 1.6 %
0.0 %
0.0 %
R24 1.4 %
0.0 %
0.0 %

Missing code observations by satellite > 15°: 
SV Missing C1 Missing C2P
G1 0.0 %
0.0 %
G2 0.0 %
0.0 %
G3 0.0 %
0.0 %
G4 0.0 %
0.0 %
G5 0.0 %
0.0 %
G6 0.0 %
0.0 %
G7 0.0 %
0.0 %
G8 0.0 %
0.0 %
G9 0.0 %
0.0 %
G10 0.0 %
0.0 %
G11 0.0 %
0.0 %
G12 0.0 %
0.0 %
G13 0.0 %
0.0 %
G14 0.0 %
2.1 %
G15 0.0 %
0.0 %
G16 0.0 %
0.0 %
G17 0.0 %
0.0 %
G18 0.0 %
0.0 %
G19 0.0 %
0.0 %
G20 0.0 %
0.0 %
G21 0.0 %
2.4 %
G22 0.0 %
1.0 %
G23 0.0 %
0.0 %
G24 0.0 %
0.0 %
G25 0.0 %
0.0 %
G26 0.0 %
0.0 %
G28 0.0 %
0.0 %
G29 0.0 %
0.0 %
G31 0.0 %
5.5 %
G32 0.0 %
0.0 %
R1 0.0 %
0.0 %
R2 0.0 %
0.0 %
R3 0.0 %
0.0 %
R4 0.0 %
0.0 %
R5 0.0 %
0.0 %
R6 0.0 %
0.0 %
R7 0.0 %
1.2 %
R8 0.0 %
0.0 %
R9 0.0 %
1.0 %
R10 0.0 %
4.0 %
R11 0.0 %
0.4 %
R12 0.0 %
0.0 %
R13 0.0 %
0.0 %
R15 0.0 %
0.0 %
R16 0.0 %
0.0 %
R17 0.0 %
0.0 %
R18 0.0 %
0.0 %
R19 0.0 %
0.0 %
R20 0.0 %
0.0 %
R21 0.0 %
0.0 %
R22 0.0 %
0.5 %
R23 0.0 %
0.0 %
R24 0.0 %
0.0 %

Tracking by satellite elevation > 15°: 
Elevation Cycle Slips GPS Cycle Slips GLONASS Cycle Slips Galileo Observations
85 - 90 0
0
0
0.1 %
80 - 85 0
0
0
1.4 %
75 - 80 0
0
0
2.0 %
70 - 75 0
0
0
2.3 %
65 - 70 0
0
0
3.8 %
60 - 65 0
0
0
4.8 %
55 - 60 0
0
0
8.1 %
50 - 55 0
0
0
8.1 %
45 - 50 0
0
0
9.6 %
40 - 45 0
2
0
8.4 %
35 - 40 1
2
0
9.9 %
30 - 35 4
3
0
10.0 %
25 - 30 5
5
0
9.9 %
20 - 25 8
1
0
9.6 %
15 - 20 10
7
0
12.0 %
10 - 15 0
0
0
0.0 %
5 - 10 0
0
0
0.0 %
0 - 5 0
0
0
0.0 %

Signal to Noise Ratio by satellite > 15°: 
SV L1/E1 L2 L5/E5a E5b E5a+b
G1 8.4
7.3
- - -
G2 8.6
7.0
- - -
G3 8.5
6.8
- - -
G4 8.6
6.8
- - -
G5 8.6
7.5
- - -
G6 8.5
6.6
- - -
G7 8.3
6.5
- - -
G8 8.4
6.6
- - -
G9 8.6
6.9
- - -
G10 8.4
6.7
- - -
G11 8.5
6.7
- - -
G12 8.6
7.3
- - -
G13 8.6
6.6
- - -
G14 8.3
6.5
- - -
G15 8.5
7.3
- - -
G16 8.5
6.8
- - -
G17 8.5
7.2
- - -
G18 7.5
4.7
- - -
G19 8.4
7.3
- - -
G20 8.4
6.8
- - -
G21 7.8
6.1
- - -
G22 8.0
6.2
- - -
G23 8.6
6.7
- - -
G24 8.3
7.3
- - -
G25 8.4
7.1
- - -
G26 8.5
6.6
- - -
G28 7.9
5.4
- - -
G29 8.6
7.4
- - -
G31 8.6
7.5
- - -
G32 8.4
6.9
- - -
R1 8.0
5.8
- - -
R2 8.1
5.7
- - -
R3 7.5
7.3
- - -
R4 8.1
7.5
- - -
R5 8.1
7.4
- - -
R6 8.0
7.4
- - -
R7 7.8
7.4
- - -
R8 7.7
7.3
- - -
R9 8.1
7.4
- - -
R10 8.1
5.9
- - -
R11 7.5
5.7
- - -
R12 7.9
6.4
- - -
R13 7.5
7.2
- - -
R15 7.5
7.3
- - -
R16 7.6
7.3
- - -
R17 7.9
7.2
- - -
R18 7.6
7.3
- - -
R19 8.0
7.1
- - -
R20 6.6
7.5
- - -
R21 7.6
5.7
- - -
R22 8.1
7.8
- - -
R23 8.2
7.6
- - -
R24 8.4
7.0
- - -
Average GPS: 8.4
6.8
- - -
Average GLONASS: 7.8
7.0
- - -
Average Galileo: - - - - -
Average All: 8.1
6.9
- - -

Code multipath by satellite > 15°: 
SV Av Elev MP1 MP2 MP5 MP5b MP5a+b
G1 35.1 ° 0.26 m
0.29 m
- - -
G2 40.6 ° 0.26 m
0.32 m
- - -
G3 38.0 ° 0.30 m
0.30 m
- - -
G4 50.6 ° 0.26 m
0.33 m
- - -
G5 49.2 ° 0.22 m
0.32 m
- - -
G6 35.7 ° 0.25 m
0.31 m
- - -
G7 34.4 ° 0.31 m
0.35 m
- - -
G8 39.9 ° 0.24 m
0.32 m
- - -
G9 47.5 ° 0.20 m
0.33 m
- - -
G10 37.9 ° 0.33 m
0.34 m
- - -
G11 37.5 ° 0.30 m
0.34 m
- - -
G12 49.2 ° 0.23 m
0.30 m
- - -
G13 46.7 ° 0.27 m
0.23 m
- - -
G14 39.5 ° 0.27 m
0.30 m
- - -
G15 42.5 ° 0.26 m
0.37 m
- - -
G16 46.3 ° 0.23 m
0.25 m
- - -
G17 37.9 ° 0.30 m
0.30 m
- - -
G18 24.5 ° 0.33 m
0.43 m
- - -
G19 37.4 ° 0.30 m
0.32 m
- - -
G20 46.1 ° 0.30 m
0.30 m
- - -
G21 36.9 ° 0.26 m
0.27 m
- - -
G22 28.4 ° 0.34 m
0.45 m
- - -
G23 41.8 ° 0.29 m
0.30 m
- - -
G24 36.0 ° 0.25 m
0.31 m
- - -
G25 40.9 ° 0.24 m
0.29 m
- - -
G26 34.3 ° 0.26 m
0.29 m
- - -
G28 25.3 ° 0.35 m
0.35 m
- - -
G29 47.6 ° 0.24 m
0.30 m
- - -
G31 50.0 ° 0.20 m
0.31 m
- - -
G32 49.7 ° 0.26 m
0.32 m
- - -
R1 42.6 ° 0.23 m
0.30 m
- - -
R2 31.5 ° 0.26 m
0.31 m
- - -
R3 32.8 ° 0.30 m
0.36 m
- - -
R4 43.9 ° 0.21 m
0.27 m
- - -
R5 48.7 ° 0.22 m
0.39 m
- - -
R6 36.3 ° 0.28 m
0.40 m
- - -
R7 37.8 ° 0.27 m
0.31 m
- - -
R8 49.9 ° 0.26 m
0.35 m
- - -
R9 32.2 ° 0.29 m
0.40 m
- - -
R10 42.7 ° 0.20 m
0.31 m
- - -
R11 49.7 ° 0.22 m
0.34 m
- - -
R12 31.8 ° 0.28 m
0.34 m
- - -
R13 38.1 ° 0.28 m
0.40 m
- - -
R15 41.8 ° 0.23 m
0.27 m
- - -
R16 31.7 ° 0.25 m
0.38 m
- - -
R17 37.2 ° 0.26 m
0.36 m
- - -
R18 26.2 ° 0.29 m
0.44 m
- - -
R19 38.6 ° 0.28 m
0.39 m
- - -
R20 50.9 ° 0.24 m
0.36 m
- - -
R21 43.0 ° 0.25 m
0.29 m
- - -
R22 32.3 ° 0.26 m
0.39 m
- - -
R23 43.4 ° 0.23 m
0.25 m
- - -
R24 49.8 ° 0.21 m
0.30 m
- - -
Average GPS: - 0.27 m
0.32 m
- - -
Average GLONASS: - 0.25 m
0.34 m
- - -
Average Galileo: - - - - - -
Average All: - 0.26 m
0.33 m
- - -

Code multipath by satellite elevation > 15°: 
Elevation MP1 MP2 MP5 MP5b MP5a+b
85 - 90 0.19 m
0.20 m
- - -
80 - 85 0.15 m
0.24 m
- - -
75 - 80 0.16 m
0.23 m
- - -
70 - 75 0.16 m
0.23 m
- - -
65 - 70 0.16 m
0.22 m
- - -
60 - 65 0.19 m
0.23 m
- - -
55 - 60 0.20 m
0.25 m
- - -
50 - 55 0.21 m
0.25 m
- - -
45 - 50 0.22 m
0.27 m
- - -
40 - 45 0.23 m
0.29 m
- - -
35 - 40 0.26 m
0.32 m
- - -
30 - 35 0.30 m
0.36 m
- - -
25 - 30 0.32 m
0.39 m
- - -
20 - 25 0.37 m
0.45 m
- - -
15 - 20 0.39 m
0.51 m
- - -
10 - 15 - - - - -
5 - 10 - - - - -
0 - 5 - - - - -


Observation File Messages:





GPS Navigation File Messages:




GLONASS Navigation File Messages:




General Messages:



Notes:


(*)  Signal strength is mapped between 1 (worst) and 9 (best), 5 is the threshold for good SNR, 0 indicates value is unknown 
(#)  A complete GPS observation contains non-zero L1, L2 code and phase measurements with a SNR of at least 0 
(#)  A complete GLONASS observation contains non-zero L1, L2 code and phase measurements with a SNR of at least 0 
(#)  A complete Galileo observation contains non-zero code and phase measurements with a SNR of at least 0 
(-)  The minimum duration of a data gap to be reported is 5 seconds 
(^)  A satellite has to be above the elevation mask with no observations recorded for at least 120 seconds to be reported 
The elevation mask is set at 15° 
Abbreviations: Av=Average, IOD=Ionospheric delay, Num=Number, Obs=Observations, MP=Multipath, SV=Satellite vehicle, Elev=Elevation, Nav=Navigation data (ephemeris), WLF=Wavelength factor  
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This file was processed using version 4.2.0.10