Leica SpiderQC v4.4 Quality Report


Program Run: 2015/04/05 00:17:49.45

File Details:


Observation File: yaiz0940.15o
GPS Navigation File: yaiz0940.15n
GLONASS Navigation File: yaiz0940.15g
Quality Testing:  Fail (See below for details) 

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:  4.4 m dX  -7.8 m dY  8.7 m dZ 
Diff. Est-Header:  12.5 m (2880 estimates) 

Session Summary:


Time of first obs:  2015/04/04 00:00:00.00 GPS 
Time of last obs:  2015/04/04 23:59:30.00 GPS 
Session length:  23.99 hours 
GPS week:  1838, day 6 
Observation interval:  30.00 seconds 
UTC leap seconds:  16 seconds 

Num SVs with obs:  54 
Num SVs with nav:  56 
Total GPS orbits:  183 
Total GLONASS orbits:  380 
Total Galileo orbits:  0 
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 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 G26 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:  0 
Auxiliary epochs:  0 

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:  Fail  Value 55 slips, Threshold 43 slips 
Multipath:  Pass  Value 0.14m MP1 / 0.21m MP2, Threshold 0.5 m 
Data Completeness:  Pass  Value 99.6 %, Threshold 95.0 % 
Navigation Data:  Pass   
     
GLONASS Specific Tests 
Cycle Slips:  Pass  Value 42 slips, Threshold 103 slips 
Multipath:  Pass  Value 0.15m MP1 / 0.26m MP2, Threshold 0.5 m 
Data Completeness:  Pass  Value 99.0 %, Threshold 90.0 % 
Navigation Data:  Fail   

General Quality Indicators:


Tracking   
Num obs > 0°:  43566 
Num possible obs > 0°:  51622 
Num obs with invalid nav:  0 
Num obs without nav:  1 
Num obs to unhealthy SV:  0 
Num obs with WLF change:  0 
Num complete loss of lock:  0 

Num obs GPS > 0°:  24364 
Num obs GLONASS > 0°:  19202 
Num obs Galileo > 0°:  0 
Num obs All > 0°:  43566 

Epochs with < 5 SV > 15°:  0  (0.0 %) 
Epochs with all SV > 15°:  2827  (98.2 %) 
Epochs with full data > 15°:  2657  (92.3 %) 

Satellite Geometry 
DOP  Minimum  Maximum  Average 
PDOP  2.7  6.9  3.5 
GDOP  3.2  8.5  4.2 

Data Gaps 
Num epochs with data:  2880 
Num epochs without data:  0 
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°:  0 
Max RX clock offset:  0.000101 ms (at 2015/04/04 14:28:00.00) 
Num of RX clock resets:  0 
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°:  38823  21695  17128  - 
% obs > 15°:   99.9 %  99.9 %  99.8 %  - 
Num possible obs > 15°:  38878  21723  17155  - 
Num complete obs > 15°:  38622  21636  16986  - 
% complete obs > 15°:   99.3 %  99.6 %  99.0 %  - 
Average # SV per Epoch:  13.5   7.5   5.9   - 
         
Obs L2 : Obs L1:  0.996   0.998   0.993   - 
Obs L5 : Obs L1:  -  -  -  - 

Cycle Slips         
Num cycle slips > 15°:  97  55  42  - 
% slips per complete obs:  0.251 %  0.254 %  0.247 %  - 
Num complete obs per slip:  39816   39338   40443   - 
IOD Slips > 15°:  193  54  139  - 
Outliers > 15°:  -  -  -  - 
LLI L1 : Obs L1:  0.0004   0.0004   0.0005   - 
LLI L2 : Obs L2:  0.0010   0.0010   0.0011   - 
LLI L5 : Obs L5:  -  -  -  - 

Multipath         
MP1 RMS:  0.149 m  0.144 m  0.154 m  - 
MP2 RMS:  0.235 m  0.213 m  0.261 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 99.5 %
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 15.15° 56.12° 854 850 (99.5 %)
0 (0.0 %) 5
G2 15.00° 60.71° 567 567 (100.0 %)
0 (0.0 %) 0
G3 15.03° 76.81° 744 742 (99.7 %)
0 (0.0 %) 4
G4 15.01° 62.03° 826 825 (99.9 %)
0 (0.0 %) 10
G5 15.00° 87.74° 692 692 (100.0 %)
0 (0.0 %) 0
G6 15.03° 85.24° 654 654 (100.0 %)
0 (0.0 %) 1
G7 15.05° 54.15° 732 732 (100.0 %)
0 (0.0 %) 0
G9 15.06° 86.83° 662 662 (100.0 %)
0 (0.0 %) 0
G10 15.06° 61.85° 816 816 (100.0 %)
0 (0.0 %) 1
G11 15.08° 62.78° 827 827 (100.0 %)
0 (0.0 %) 0
G12 15.12° 82.24° 691 691 (100.0 %)
0 (0.0 %) 0
G13 15.04° 55.48° 842 842 (100.0 %)
0 (0.0 %) 0
G14 15.11° 59.88° 555 555 (100.0 %)
0 (0.0 %) 0
G15 15.01° 74.00° 770 770 (100.0 %)
0 (0.0 %) 0
G16 15.05° 81.23° 714 714 (100.0 %)
0 (0.0 %) 0
G17 15.01° 60.67° 558 558 (100.0 %)
0 (0.0 %) 0
G18 15.00° 37.57° 825 821 (99.5 %)
0 (0.0 %) 7
G19 15.03° 61.77° 827 827 (100.0 %)
0 (0.0 %) 1
G20 15.00° 74.23° 767 767 (100.0 %)
0 (0.0 %) 0
G21 15.12° 59.47° 583 583 (100.0 %)
0 (0.0 %) 0
G22 15.09° 45.98° 784 781 (99.6 %)
0 (0.0 %) 6
G23 15.02° 70.84° 615 612 (99.5 %)
0 (0.0 %) 3
G24 15.03° 56.97° 846 846 (100.0 %)
0 (0.0 %) 1
G25 15.03° 64.26° 805 805 (100.0 %)
0 (0.0 %) 0
G27 15.01° 56.54° 855 855 (100.0 %)
0 (0.0 %) 0
G28 15.01° 37.29° 822 822 (100.0 %)
0 (0.0 %) 0
G29 15.04° 79.10° 626 626 (100.0 %)
0 (0.0 %) 0
G30 15.11° 66.34° 584 584 (100.0 %)
0 (0.0 %) 0
G31 15.11° 83.29° 650 641 (98.6 %)
0 (0.0 %) 13
G32 15.02° 77.77° 630 628 (99.7 %)
0 (0.0 %) 3
R1 15.19° 80.50° 531 531 (100.0 %)
0 (0.0 %) 0
R2 15.06° 56.49° 868 868 (100.0 %)
0 (0.0 %) 1
R3 15.02° 62.73° 931 931 (100.0 %)
0 (0.0 %) 4
R4 15.01° 87.57° 657 657 (100.0 %)
0 (0.0 %) 3
R5 15.01° 68.65° 636 636 (100.0 %)
0 (0.0 %) 0
R6 15.03° 47.45° 764 764 (100.0 %)
0 (0.0 %) 2
R7 15.01° 53.11° 737 737 (100.0 %)
0 (0.0 %) 0
R8 15.08° 74.89° 607 607 (100.0 %)
0 (0.0 %) 0
R9 15.00° 63.04° 689 689 (100.0 %)
0 (0.0 %) 0
R10 15.03° 87.00° 541 541 (100.0 %)
0 (0.0 %) 1
R11 15.01° 68.54° 626 626 (100.0 %)
0 (0.0 %) 0
R12 15.01° 47.62° 760 760 (100.0 %)
0 (0.0 %) 2
R13 15.05° 52.70° 731 716 (97.9 %)
0 (0.0 %) 6
R14 15.01° 74.56° 595 584 (98.2 %)
1 (0.2 %) 12
R15 15.05° 82.88° 832 831 (99.9 %)
0 (0.0 %) 10
R16 15.01° 55.84° 931 931 (100.0 %)
0 (0.0 %) 0
R17 15.11° 69.55° 926 926 (100.0 %)
0 (0.0 %) 0
R18 15.04° 51.25° 1028 1028 (100.0 %)
0 (0.0 %) 1
R19 15.03° 74.34° 774 774 (100.0 %)
0 (0.0 %) 0
R20 15.06° 81.21° 530 530 (100.0 %)
0 (0.0 %) 0
R21 15.02° 58.02° 631 631 (100.0 %)
0 (0.0 %) 0
R22 15.07° 38.90° 712 712 (100.0 %)
0 (0.0 %) 0
R23 15.02° 62.48° 578 578 (100.0 %)
0 (0.0 %) 0
R24 15.07° 85.48° 540 540 (100.0 %)
0 (0.0 %) 0

Missing phase observations by satellite > 15°: 
SV Observations Missing L1 Missing L2
G1 2.2 %
0.2 %
0.5 %
G2 1.5 %
0.0 %
0.0 %
G3 1.9 %
0.1 %
0.8 %
G4 2.1 %
0.1 %
0.4 %
G5 1.8 %
0.0 %
0.0 %
G6 1.7 %
0.0 %
0.0 %
G7 1.9 %
0.0 %
0.0 %
G9 1.7 %
0.0 %
0.0 %
G10 2.1 %
0.0 %
0.0 %
G11 2.1 %
0.0 %
0.0 %
G12 1.8 %
0.0 %
0.0 %
G13 2.2 %
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 %
0.7 %
1.0 %
G19 2.1 %
0.0 %
0.0 %
G20 2.0 %
0.0 %
0.0 %
G21 1.5 %
0.0 %
0.0 %
G22 2.0 %
0.3 %
1.0 %
G23 1.6 %
0.2 %
0.7 %
G24 2.2 %
0.0 %
0.0 %
G25 2.1 %
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 1.7 %
1.2 %
3.3 %
G32 1.6 %
0.5 %
0.8 %
R1 1.4 %
0.0 %
0.0 %
R2 2.2 %
0.0 %
0.0 %
R3 2.4 %
0.0 %
0.4 %
R4 1.7 %
0.0 %
2.1 %
R5 1.6 %
0.0 %
0.0 %
R6 2.0 %
0.0 %
0.1 %
R7 1.9 %
0.0 %
0.0 %
R8 1.6 %
0.0 %
0.0 %
R9 1.8 %
0.0 %
0.0 %
R10 1.4 %
0.0 %
0.0 %
R11 1.6 %
0.0 %
0.0 %
R12 2.0 %
0.0 %
0.0 %
R13 1.8 %
1.7 %
4.2 %
R14 1.5 %
1.0 %
7.4 %
R15 2.1 %
0.5 %
6.0 %
R16 2.4 %
0.0 %
0.0 %
R17 2.4 %
0.0 %
0.0 %
R18 2.6 %
0.0 %
0.0 %
R19 2.0 %
0.0 %
0.0 %
R20 1.4 %
0.0 %
0.0 %
R21 1.6 %
0.0 %
0.0 %
R22 1.8 %
0.0 %
0.0 %
R23 1.5 %
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 %
0.2 %
G2 0.0 %
0.0 %
G3 0.0 %
0.7 %
G4 0.0 %
0.2 %
G5 0.0 %
0.0 %
G6 0.0 %
0.0 %
G7 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 %
0.0 %
G15 0.0 %
0.0 %
G16 0.0 %
0.0 %
G17 0.0 %
0.0 %
G18 0.0 %
0.4 %
G19 0.0 %
0.0 %
G20 0.0 %
0.0 %
G21 0.0 %
0.0 %
G22 0.0 %
0.8 %
G23 0.0 %
0.5 %
G24 0.0 %
0.0 %
G25 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 %
2.7 %
G32 0.0 %
0.5 %
R1 0.0 %
0.0 %
R2 0.0 %
0.0 %
R3 0.0 %
0.3 %
R4 0.0 %
0.5 %
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 %
2.7 %
R14 0.0 %
4.3 %
R15 0.0 %
3.4 %
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
0.4 %
80 - 85 0
0
0
1.3 %
75 - 80 0
0
0
1.9 %
70 - 75 0
0
0
3.0 %
65 - 70 0
0
0
3.4 %
60 - 65 0
0
0
5.5 %
55 - 60 0
0
0
7.8 %
50 - 55 1
0
0
8.7 %
45 - 50 3
1
0
9.0 %
40 - 45 2
3
0
8.6 %
35 - 40 2
3
0
9.5 %
30 - 35 5
2
0
10.2 %
25 - 30 5
10
0
9.5 %
20 - 25 15
12
0
9.8 %
15 - 20 22
11
0
11.7 %
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 8.4
7.3
- - -
G3 8.5
7.4
- - -
G4 8.5
6.9
- - -
G5 8.6
7.7
- - -
G6 8.4
7.7
- - -
G7 8.3
6.8
- - -
G9 8.5
7.6
- - -
G10 8.3
6.9
- - -
G11 8.5
6.8
- - -
G12 8.6
7.5
- - -
G13 8.5
6.5
- - -
G14 8.3
6.6
- - -
G15 8.6
7.6
- - -
G16 8.5
7.0
- - -
G17 8.5
7.4
- - -
G18 7.8
5.4
- - -
G19 8.5
7.4
- - -
G20 8.5
7.0
- - -
G21 8.0
6.3
- - -
G22 8.1
6.3
- - -
G23 8.7
6.9
- - -
G24 8.4
7.4
- - -
G25 8.4
7.2
- - -
G27 8.5
7.6
- - -
G28 8.0
5.6
- - -
G29 8.6
7.6
- - -
G30 8.5
7.3
- - -
G31 8.6
7.6
- - -
G32 8.5
7.0
- - -
R1 7.8
6.1
- - -
R2 7.8
7.3
- - -
R3 7.3
7.4
- - -
R4 7.7
7.4
- - -
R5 6.7
7.6
- - -
R6 7.9
7.6
- - -
R7 7.8
7.7
- - -
R8 8.0
7.6
- - -
R9 7.3
4.4
- - -
R10 8.2
6.0
- - -
R11 7.7
6.1
- - -
R12 6.7
6.8
- - -
R13 5.6
7.5
- - -
R14 6.4
5.9
- - -
R15 7.2
7.2
- - -
R16 7.4
7.1
- - -
R17 7.9
7.4
- - -
R18 8.1
7.8
- - -
R19 8.0
7.5
- - -
R20 6.7
7.7
- - -
R21 7.8
7.3
- - -
R22 7.7
7.4
- - -
R23 7.9
5.6
- - -
R24 7.6
6.3
- - -
Average GPS: 8.4
7.1
- - -
Average GLONASS: 7.5
6.9
- - -
Average Galileo: - - - - -
Average All: 8.0
7.0
- - -

Code multipath by satellite > 15°: 
SV Av Elev MP1 MP2 MP5 MP5b MP5a+b
G1 35.6 ° 0.13 m
0.16 m
- - -
G2 37.9 ° 0.17 m
0.17 m
- - -
G3 45.9 ° 0.13 m
0.21 m
- - -
G4 38.5 ° 0.12 m
0.15 m
- - -
G5 51.4 ° 0.13 m
0.25 m
- - -
G6 50.1 ° 0.13 m
0.16 m
- - -
G7 34.6 ° 0.16 m
0.23 m
- - -
G9 50.9 ° 0.13 m
0.22 m
- - -
G10 38.5 ° 0.13 m
0.24 m
- - -
G11 38.9 ° 0.13 m
0.19 m
- - -
G12 48.7 ° 0.14 m
0.21 m
- - -
G13 35.3 ° 0.16 m
0.26 m
- - -
G14 37.5 ° 0.14 m
0.20 m
- - -
G15 44.5 ° 0.15 m
0.24 m
- - -
G16 48.1 ° 0.13 m
0.20 m
- - -
G17 37.8 ° 0.15 m
0.18 m
- - -
G18 26.3 ° 0.20 m
0.32 m
- - -
G19 38.4 ° 0.17 m
0.21 m
- - -
G20 44.6 ° 0.15 m
0.26 m
- - -
G21 37.3 ° 0.14 m
0.19 m
- - -
G22 30.5 ° 0.23 m
0.31 m
- - -
G23 42.9 ° 0.13 m
0.22 m
- - -
G24 36.0 ° 0.13 m
0.20 m
- - -
G25 39.6 ° 0.13 m
0.20 m
- - -
G27 35.8 ° 0.14 m
0.20 m
- - -
G28 26.1 ° 0.17 m
0.22 m
- - -
G29 47.1 ° 0.12 m
0.19 m
- - -
G30 40.7 ° 0.13 m
0.18 m
- - -
G31 49.2 ° 0.14 m
0.17 m
- - -
G32 46.4 ° 0.12 m
0.25 m
- - -
R1 47.8 ° 0.15 m
0.32 m
- - -
R2 35.8 ° 0.14 m
0.28 m
- - -
R3 38.9 ° 0.19 m
0.26 m
- - -
R4 51.3 ° 0.15 m
0.26 m
- - -
R5 41.8 ° 0.16 m
0.31 m
- - -
R6 31.2 ° 0.13 m
0.22 m
- - -
R7 34.1 ° 0.18 m
0.32 m
- - -
R8 45.0 ° 0.15 m
0.27 m
- - -
R9 39.0 ° 0.14 m
0.22 m
- - -
R10 51.0 ° 0.10 m
0.15 m
- - -
R11 41.8 ° 0.13 m
0.22 m
- - -
R12 31.3 ° 0.15 m
0.22 m
- - -
R13 33.9 ° 0.22 m
0.29 m
- - -
R14 44.8 ° 0.15 m
0.26 m
- - -
R15 49.0 ° 0.16 m
0.28 m
- - -
R16 35.4 ° 0.18 m
0.25 m
- - -
R17 42.3 ° 0.15 m
0.25 m
- - -
R18 33.1 ° 0.12 m
0.21 m
- - -
R19 44.7 ° 0.16 m
0.22 m
- - -
R20 48.1 ° 0.19 m
0.29 m
- - -
R21 36.5 ° 0.15 m
0.28 m
- - -
R22 27.0 ° 0.15 m
0.29 m
- - -
R23 38.7 ° 0.14 m
0.31 m
- - -
R24 50.3 ° 0.17 m
0.30 m
- - -
Average GPS: - 0.14 m
0.21 m
- - -
Average GLONASS: - 0.15 m
0.26 m
- - -
Average Galileo: - - - - - -
Average All: - 0.15 m
0.23 m
- - -

Code multipath by satellite elevation > 15°: 
Elevation MP1 MP2 MP5 MP5b MP5a+b
85 - 90 0.10 m
0.15 m
- - -
80 - 85 0.09 m
0.15 m
- - -
75 - 80 0.09 m
0.13 m
- - -
70 - 75 0.09 m
0.13 m
- - -
65 - 70 0.09 m
0.15 m
- - -
60 - 65 0.09 m
0.13 m
- - -
55 - 60 0.10 m
0.15 m
- - -
50 - 55 0.11 m
0.17 m
- - -
45 - 50 0.12 m
0.20 m
- - -
40 - 45 0.12 m
0.22 m
- - -
35 - 40 0.14 m
0.24 m
- - -
30 - 35 0.16 m
0.27 m
- - -
25 - 30 0.20 m
0.31 m
- - -
20 - 25 0.22 m
0.34 m
- - -
15 - 20 0.26 m
0.36 m
- - -
10 - 15 - - - - -
5 - 10 - - - - -
0 - 5 - - - - -


Observation File Messages:





GPS Navigation File Messages:




GLONASS Navigation File Messages:




General Messages:


- Orbit missing or expired for SV R14 starting 2015/04/04 00:01:00.00.

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  
-  It took 3.0 seconds to process this file 
-  This file was processed using version 4.4.0.1