Leica SpiderQC v4.4 Quality Report


Program Run: 2015/05/06 00:10:22.65

File Details:


Observation File: yaiz1250.15o
GPS Navigation File: yaiz1250.15n
GLONASS Navigation File: yaiz1250.15g
Quality Testing:  Pass 

Station Details:


Marker Name/Number:  YAIZ  31326M001   
Observer/Agency:       
Receiver #/Type/Vers:  495478  LEICA GRX1200+GNSS  8.71/6.112 
Antenna #/Type:  09260119  LEIAX1203+GNSS NONE   
Antenna Offsets (HEN):  0.000  0.000  0.000 
Approx Position (XYZ):  5425196.210  -1329094.129  3069344.538 
Approx Position (plh):  28° 57' 6.62215" N  13° 45' 55.85104" W  233.531m 
Diff. Est-Header:  3.9 m dX  -7.3 m dY  4.8 m dZ 
Diff. Est-Header:  9.5 m (2880 estimates) 

Session Summary:


Time of first obs:  2015/05/05 00:00:00.00 GPS 
Time of last obs:  2015/05/05 23:59:30.00 GPS 
Session length:  23.99 hours 
GPS week:  1843, day 2 
Observation interval:  30.00 seconds 
UTC leap seconds:  16 seconds 

Num SVs with obs:  55 
Num SVs with nav:  56 
Total GPS orbits:  190 
Total GLONASS orbits:  378 
Total Galileo orbits: 
SVs with obs:  G1 G2 G3 G4 G5 G6 G7 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 obs:  G8 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 20 slips, Threshold 45 slips 
Multipath:  Pass  Value 0.15m MP1 / 0.19m MP2, Threshold 0.5 m 
Data Completeness:  Pass  Value 99.8 %, Threshold 95.0 % 
Navigation Data:  Pass   
     
GLONASS Specific Tests 
Cycle Slips:  Pass  Value 11 slips, Threshold 103 slips 
Multipath:  Pass  Value 0.16m MP1 / 0.25m MP2, Threshold 0.5 m 
Data Completeness:  Pass  Value 100.0 %, Threshold 90.0 % 
Navigation Data:  Pass   

General Quality Indicators:


Tracking   
Num obs > 0°:  44462 
Num possible obs > 0°:  52721 
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°:  25213 
Num obs GLONASS > 0°:  19249 
Num obs Galileo > 0°: 
Num obs All > 0°:  44462 

Epochs with < 5 SV > 15°:  (0.0 %) 
Epochs with all SV > 15°:  2873  (99.8 %) 
Epochs with full data > 15°:  2840  (98.6 %) 

Satellite Geometry 
DOP  Minimum  Maximum  Average 
PDOP  2.5  6.2  3.4 
GDOP  3.0  7.7  4.1 

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 
None   

Receiver Clock 
Clock Slips > 15°: 
Max RX clock offset:  0.000060 ms (at 2015/05/05 16:16:30.00) 
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°:  39530  22388  17142 
% obs > 15°:   100.0 %  100.0 %  100.0 % 
Num possible obs > 15°:  39537  22395  17142 
Num complete obs > 15°:  39494  22359  17135 
% complete obs > 15°:   99.9 %  99.8 %  100.0 % 
Average # SV per Epoch:  13.7   7.8   6.0  
         
Obs L2 : Obs L1:  1.000   1.000   1.000  
Obs L5 : Obs L1: 

Cycle Slips         
Num cycle slips > 15°:  31  20  11 
% slips per complete obs:  0.078 %  0.089 %  0.064 % 
Num complete obs per slip:  127400   111795   155773  
IOD Slips > 15°:  29  22 
Outliers > 15°: 
LLI L1 : Obs L1:  0.0000   0.0000  
LLI L2 : Obs L2:  0.0002   0.0003   0.0001  
LLI L5 : Obs L5: 

Multipath         
MP1 RMS:  0.151 m  0.145 m  0.158 m 
MP2 RMS:  0.216 m  0.190 m  0.250 m 
MP5 RMS: 

Extended Quality Information:


Tracking by observation type > 15°: 
Type Code Phase SNR Doppler
L1 100.0 %
99.9 %
N/A N/A
L2 N/A 99.9 %
N/A N/A
L2P 100.0 %
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 15.06° 56.13° 855 855 (100.0 %)
0 (0.0 %) 0
G2 15.01° 59.79° 563 563 (100.0 %)
0 (0.0 %) 0
G3 15.05° 76.63° 753 753 (100.0 %)
0 (0.0 %) 0
G4 15.07° 61.91° 826 826 (100.0 %)
0 (0.0 %) 0
G5 15.00° 87.89° 692 692 (100.0 %)
0 (0.0 %) 0
G6 15.04° 84.82° 653 653 (100.0 %)
0 (0.0 %) 1
G7 15.01° 54.52° 719 719 (100.0 %)
0 (0.0 %) 0
G9 15.13° 86.43° 660 659 (99.8 %)
0 (0.0 %) 3
G10 15.05° 61.90° 816 816 (100.0 %)
0 (0.0 %) 1
G11 15.12° 62.94° 826 826 (100.0 %)
0 (0.0 %) 0
G12 15.03° 82.01° 693 693 (100.0 %)
0 (0.0 %) 0
G13 15.08° 55.49° 842 842 (100.0 %)
0 (0.0 %) 0
G14 15.08° 60.52° 558 558 (100.0 %)
0 (0.0 %) 1
G15 15.00° 73.70° 771 771 (100.0 %)
0 (0.0 %) 0
G16 15.02° 80.91° 708 708 (100.0 %)
0 (0.0 %) 0
G17 15.10° 60.15° 555 555 (100.0 %)
0 (0.0 %) 0
G18 15.00° 37.08° 818 818 (100.0 %)
0 (0.0 %) 1
G19 15.08° 61.95° 825 825 (100.0 %)
0 (0.0 %) 0
G20 15.13° 88.49° 692 692 (100.0 %)
0 (0.0 %) 0
G21 15.02° 58.76° 580 580 (100.0 %)
0 (0.0 %) 0
G22 15.08° 46.09° 774 774 (100.0 %)
0 (0.0 %) 0
G23 15.02° 70.56° 614 608 (99.0 %)
0 (0.0 %) 11
G24 15.08° 56.98° 846 846 (100.0 %)
0 (0.0 %) 1
G25 15.01° 64.11° 806 806 (100.0 %)
0 (0.0 %) 0
G26 15.05° 71.96° 771 771 (100.0 %)
0 (0.0 %) 0
G27 15.03° 56.52° 854 854 (100.0 %)
0 (0.0 %) 0
G28 15.03° 37.45° 829 829 (100.0 %)
0 (0.0 %) 0
G29 15.05° 79.87° 629 629 (100.0 %)
0 (0.0 %) 0
G30 15.01° 66.93° 587 587 (100.0 %)
0 (0.0 %) 0
G31 15.04° 82.58° 648 648 (100.0 %)
0 (0.0 %) 1
G32 15.10° 78.62° 632 632 (100.0 %)
0 (0.0 %) 0
R1 15.01° 56.46° 637 637 (100.0 %)
0 (0.0 %) 1
R2 15.04° 57.89° 897 897 (100.0 %)
0 (0.0 %) 0
R3 15.01° 87.10° 781 781 (100.0 %)
0 (0.0 %) 0
R4 15.10° 68.28° 782 782 (100.0 %)
0 (0.0 %) 3
R5 15.02° 48.11° 762 762 (100.0 %)
0 (0.0 %) 0
R6 15.10° 54.31° 728 728 (100.0 %)
0 (0.0 %) 0
R7 15.04° 75.37° 604 604 (100.0 %)
0 (0.0 %) 0
R8 15.08° 80.63° 532 532 (100.0 %)
0 (0.0 %) 0
R9 15.03° 87.44° 635 635 (100.0 %)
0 (0.0 %) 0
R10 15.10° 68.74° 622 622 (100.0 %)
0 (0.0 %) 0
R11 15.12° 47.52° 759 759 (100.0 %)
0 (0.0 %) 0
R12 15.04° 52.36° 734 734 (100.0 %)
0 (0.0 %) 2
R13 15.00° 75.13° 597 597 (100.0 %)
0 (0.0 %) 1
R14 15.06° 80.85° 726 726 (100.0 %)
0 (0.0 %) 0
R15 15.15° 58.85° 823 823 (100.0 %)
0 (0.0 %) 0
R16 15.01° 64.19° 810 810 (100.0 %)
0 (0.0 %) 0
R17 15.06° 53.27° 986 986 (100.0 %)
0 (0.0 %) 2
R18 15.01° 73.05° 959 959 (100.0 %)
0 (0.0 %) 0
R19 15.04° 81.40° 616 616 (100.0 %)
0 (0.0 %) 0
R20 15.00° 57.31° 643 643 (100.0 %)
0 (0.0 %) 0
R21 15.12° 39.14° 711 711 (100.0 %)
0 (0.0 %) 0
R22 15.03° 61.31° 597 597 (100.0 %)
0 (0.0 %) 1
R23 15.03° 86.84° 544 544 (100.0 %)
0 (0.0 %) 0
R24 15.02° 70.23° 657 657 (100.0 %)
0 (0.0 %) 1

Missing phase observations by satellite > 15°: 
SV Observations Missing L1 Missing L2
G1 2.2 %
0.0 %
0.0 %
G2 1.4 %
0.0 %
0.0 %
G3 1.9 %
0.0 %
0.0 %
G4 2.1 %
0.0 %
0.0 %
G5 1.8 %
0.0 %
0.0 %
G6 1.7 %
0.0 %
0.0 %
G7 1.8 %
0.0 %
0.0 %
G9 1.7 %
1.1 %
1.2 %
G10 2.1 %
0.0 %
0.0 %
G11 2.1 %
0.0 %
0.0 %
G12 1.8 %
0.0 %
0.0 %
G13 2.1 %
0.0 %
0.0 %
G14 1.4 %
0.0 %
0.0 %
G15 2.0 %
0.0 %
0.0 %
G16 1.8 %
0.0 %
0.0 %
G17 1.4 %
0.0 %
0.0 %
G18 2.1 %
0.0 %
0.0 %
G19 2.1 %
0.0 %
0.1 %
G20 1.8 %
0.0 %
0.0 %
G21 1.5 %
0.0 %
0.0 %
G22 2.0 %
0.0 %
0.0 %
G23 1.5 %
2.1 %
3.3 %
G24 2.1 %
0.0 %
0.0 %
G25 2.0 %
0.0 %
0.0 %
G26 2.0 %
0.0 %
0.0 %
G27 2.2 %
0.0 %
0.0 %
G28 2.1 %
0.0 %
0.0 %
G29 1.6 %
0.0 %
0.0 %
G30 1.5 %
0.0 %
0.0 %
G31 1.6 %
0.0 %
0.0 %
G32 1.6 %
0.0 %
0.0 %
R1 1.6 %
0.0 %
0.0 %
R2 2.3 %
0.0 %
0.0 %
R3 2.0 %
0.0 %
0.0 %
R4 2.0 %
0.0 %
0.9 %
R5 1.9 %
0.0 %
0.0 %
R6 1.8 %
0.0 %
0.0 %
R7 1.5 %
0.0 %
0.0 %
R8 1.3 %
0.0 %
0.0 %
R9 1.6 %
0.0 %
0.0 %
R10 1.6 %
0.0 %
0.0 %
R11 1.9 %
0.0 %
0.0 %
R12 1.9 %
0.0 %
0.0 %
R13 1.5 %
0.0 %
0.0 %
R14 1.8 %
0.0 %
0.0 %
R15 2.1 %
0.0 %
0.0 %
R16 2.0 %
0.0 %
0.0 %
R17 2.5 %
0.0 %
0.0 %
R18 2.4 %
0.0 %
0.0 %
R19 1.6 %
0.0 %
0.0 %
R20 1.6 %
0.0 %
0.0 %
R21 1.8 %
0.0 %
0.0 %
R22 1.5 %
0.0 %
0.0 %
R23 1.4 %
0.0 %
0.0 %
R24 1.7 %
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 %
G9 0.0 %
0.3 %
G10 0.0 %
0.0 %
G11 0.0 %
0.0 %
G12 0.0 %
0.0 %
G13 0.0 %
0.0 %
G14 0.0 %
0.0 %
G15 0.0 %
0.0 %
G16 0.0 %
0.0 %
G17 0.0 %
0.0 %
G18 0.0 %
0.0 %
G19 0.0 %
0.1 %
G20 0.0 %
0.0 %
G21 0.0 %
0.0 %
G22 0.0 %
0.0 %
G23 0.0 %
1.6 %
G24 0.0 %
0.0 %
G25 0.0 %
0.0 %
G26 0.0 %
0.0 %
G27 0.0 %
0.0 %
G28 0.0 %
0.0 %
G29 0.0 %
0.0 %
G30 0.0 %
0.0 %
G31 0.0 %
0.0 %
G32 0.0 %
0.0 %
R1 0.0 %
0.0 %
R2 0.0 %
0.0 %
R3 0.0 %
0.0 %
R4 0.0 %
0.3 %
R5 0.0 %
0.0 %
R6 0.0 %
0.0 %
R7 0.0 %
0.0 %
R8 0.0 %
0.0 %
R9 0.0 %
0.0 %
R10 0.0 %
0.0 %
R11 0.0 %
0.0 %
R12 0.0 %
0.0 %
R13 0.0 %
0.0 %
R14 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 %
0.0 %
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
0.5 %
80 - 85 0
0
0
1.3 %
75 - 80 0
0
0
2.1 %
70 - 75 0
0
0
2.9 %
65 - 70 0
0
0
3.5 %
60 - 65 0
0
0
5.4 %
55 - 60 0
0
0
8.0 %
50 - 55 0
0
0
8.8 %
45 - 50 0
0
0
8.6 %
40 - 45 1
0
0
8.2 %
35 - 40 2
0
0
9.4 %
30 - 35 2
0
0
10.2 %
25 - 30 2
1
0
9.4 %
20 - 25 7
2
0
10.1 %
15 - 20 6
8
0
11.6 %
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 8.5
7.4
- - -
G2 8.4
7.2
- - -
G3 8.4
7.3
- - -
G4 8.6
7.0
- - -
G5 8.6
7.7
- - -
G6 8.4
7.7
- - -
G7 8.3
6.8
- - -
G9 8.5
7.7
- - -
G10 8.3
6.8
- - -
G11 8.5
6.9
- - -
G12 8.6
7.4
- - -
G13 8.5
6.4
- - -
G14 8.2
6.6
- - -
G15 8.6
7.5
- - -
G16 8.5
7.0
- - -
G17 8.5
7.4
- - -
G18 7.8
5.4
- - -
G19 8.5
7.4
- - -
G20 8.4
7.0
- - -
G21 8.1
6.3
- - -
G22 8.1
6.3
- - -
G23 8.6
6.8
- - -
G24 8.3
7.4
- - -
G25 8.4
7.1
- - -
G26 8.4
7.6
- - -
G27 8.5
7.5
- - -
G28 7.9
5.6
- - -
G29 8.6
7.6
- - -
G30 8.5
7.3
- - -
G31 8.6
7.8
- - -
G32 8.5
7.1
- - -
R1 7.5
5.4
- - -
R2 7.8
7.2
- - -
R3 7.5
7.6
- - -
R4 7.9
7.5
- - -
R5 6.6
7.5
- - -
R6 8.1
7.6
- - -
R7 8.1
7.7
- - -
R8 7.9
7.6
- - -
R9 7.2
4.5
- - -
R10 8.0
5.8
- - -
R11 7.6
5.8
- - -
R12 6.6
6.7
- - -
R13 6.0
7.6
- - -
R14 6.0
5.8
- - -
R15 7.4
7.3
- - -
R16 7.4
7.2
- - -
R17 7.5
4.8
- - -
R18 8.2
7.8
- - -
R19 8.1
7.5
- - -
R20 6.1
7.3
- - -
R21 7.7
7.3
- - -
R22 7.8
7.4
- - -
R23 8.3
5.7
- - -
R24 6.8
6.1
- - -
Average GPS: 8.4
7.1
- - -
Average GLONASS: 7.4
6.8
- - -
Average Galileo: - - - - -
Average All: 8.0
6.9
- - -

Code multipath by satellite > 15°: 
SV Av Elev MP1 MP2 MP5 MP5b MP5a+b
G1 35.6 ° 0.13 m
0.17 m
- - -
G2 37.4 ° 0.17 m
0.17 m
- - -
G3 45.8 ° 0.14 m
0.20 m
- - -
G4 38.5 ° 0.13 m
0.17 m
- - -
G5 51.4 ° 0.13 m
0.16 m
- - -
G6 49.9 ° 0.13 m
0.15 m
- - -
G7 34.8 ° 0.17 m
0.21 m
- - -
G9 50.8 ° 0.13 m
0.20 m
- - -
G10 38.5 ° 0.13 m
0.18 m
- - -
G11 39.0 ° 0.13 m
0.19 m
- - -
G12 48.5 ° 0.15 m
0.21 m
- - -
G13 35.3 ° 0.17 m
0.19 m
- - -
G14 37.8 ° 0.15 m
0.19 m
- - -
G15 44.4 ° 0.16 m
0.19 m
- - -
G16 48.0 ° 0.14 m
0.16 m
- - -
G17 37.6 ° 0.16 m
0.15 m
- - -
G18 26.0 ° 0.18 m
0.26 m
- - -
G19 38.5 ° 0.16 m
0.18 m
- - -
G20 51.8 ° 0.14 m
0.19 m
- - -
G21 36.9 ° 0.15 m
0.29 m
- - -
G22 30.6 ° 0.22 m
0.30 m
- - -
G23 42.8 ° 0.10 m
0.13 m
- - -
G24 36.0 ° 0.13 m
0.19 m
- - -
G25 39.6 ° 0.13 m
0.15 m
- - -
G26 43.5 ° 0.15 m
0.16 m
- - -
G27 35.8 ° 0.14 m
0.21 m
- - -
G28 26.2 ° 0.18 m
0.22 m
- - -
G29 47.5 ° 0.13 m
0.19 m
- - -
G30 41.0 ° 0.13 m
0.17 m
- - -
G31 48.8 ° 0.14 m
0.17 m
- - -
G32 46.9 ° 0.10 m
0.19 m
- - -
R1 35.7 ° 0.16 m
0.26 m
- - -
R2 36.5 ° 0.16 m
0.27 m
- - -
R3 51.1 ° 0.13 m
0.20 m
- - -
R4 41.7 ° 0.16 m
0.24 m
- - -
R5 31.6 ° 0.18 m
0.33 m
- - -
R6 34.7 ° 0.14 m
0.22 m
- - -
R7 45.2 ° 0.14 m
0.20 m
- - -
R8 47.9 ° 0.17 m
0.28 m
- - -
R9 51.2 ° 0.13 m
0.20 m
- - -
R10 41.9 ° 0.13 m
0.19 m
- - -
R11 31.3 ° 0.14 m
0.20 m
- - -
R12 33.7 ° 0.17 m
0.20 m
- - -
R13 45.1 ° 0.18 m
0.23 m
- - -
R14 48.0 ° 0.20 m
0.27 m
- - -
R15 37.0 ° 0.19 m
0.22 m
- - -
R16 39.6 ° 0.17 m
0.21 m
- - -
R17 34.2 ° 0.13 m
0.33 m
- - -
R18 44.0 ° 0.14 m
0.19 m
- - -
R19 48.2 ° 0.18 m
0.23 m
- - -
R20 36.2 ° 0.17 m
0.25 m
- - -
R21 27.1 ° 0.17 m
0.29 m
- - -
R22 38.2 ° 0.14 m
0.25 m
- - -
R23 50.9 ° 0.13 m
0.32 m
- - -
R24 42.6 ° 0.18 m
0.41 m
- - -
Average GPS: - 0.15 m
0.19 m
- - -
Average GLONASS: - 0.16 m
0.25 m
- - -
Average Galileo: - - - - - -
Average All: - 0.15 m
0.22 m
- - -

Code multipath by satellite elevation > 15°: 
Elevation MP1 MP2 MP5 MP5b MP5a+b
85 - 90 0.08 m
0.14 m
- - -
80 - 85 0.10 m
0.15 m
- - -
75 - 80 0.10 m
0.13 m
- - -
70 - 75 0.09 m
0.12 m
- - -
65 - 70 0.10 m
0.13 m
- - -
60 - 65 0.09 m
0.13 m
- - -
55 - 60 0.10 m
0.13 m
- - -
50 - 55 0.11 m
0.15 m
- - -
45 - 50 0.12 m
0.18 m
- - -
40 - 45 0.13 m
0.19 m
- - -
35 - 40 0.14 m
0.21 m
- - -
30 - 35 0.17 m
0.23 m
- - -
25 - 30 0.19 m
0.30 m
- - -
20 - 25 0.23 m
0.32 m
- - -
15 - 20 0.25 m
0.35 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 4.4.0.1