Leica SpiderQC v4.2 Quality Report


Program Run: 2014/02/03 00:00:47.59

File Details:


Observation File: graf0330.14o
GPS Navigation File: graf0330.14n
GLONASS Navigation File: graf0330.14g
Quality Testing:  Fail (See below for details) 

Station Details:


Marker Name/Number:  GRAF  31327M001   
Observer/Agency:       
Receiver #/Type/Vers:  495479  LEICA GRX1200+GNSS  8.71/6.112 
Antenna #/Type:  09270069  LEIAX1203+GNSS NONE   
Antenna Offsets (HEN):  0.000  0.000  0.000 
Approx Position (XYZ):  5387360.552  -1572097.162  3020885.985 
Approx Position (plh):  28° 27' 13.82589" N  16° 16' 4.38766" W  138.392m 
Diff. Est-Header:  3.0 m dX  -7.2 m dY  7.8 m dZ 
Diff. Est-Header:  11.0 m (2880 estimates) 

Session Summary:


Time of first obs:  2014/02/02 00:00:00.00 GPS 
Time of last obs:  2014/02/02 23:59:30.00 GPS 
Session length:  23.99 hours 
GPS week:  1778, day 0 
Observation interval:  30.00 seconds 
UTC leap seconds:  16 seconds 

Num SVs with obs:  55 
Num SVs with nav:  55 
Total GPS orbits:  187 
Total GLONASS orbits:  382 
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 G27 G28 G29 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:  G30 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 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:  G30  
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 0.41m MP1 / 0.43m MP2, Threshold 0.5 m 
Data Completeness:  Pass  Value 99.9 %, Threshold 95.0 % 
Navigation Data:  Pass   
     
GLONASS Specific Tests 
Cycle Slips:  Pass  Value 21 slips, Threshold 103 slips 
Multipath:  Fail  Value 0.41m MP1 / 0.51m MP2, Threshold 0.5 m 
Data Completeness:  Pass  Value 99.5 %, Threshold 90.0 % 
Navigation Data:  Pass   

General Quality Indicators:


Tracking   
Num obs > 0°:  44601 
Num possible obs > 0°:  52653 
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°:  25165 
Num obs GLONASS > 0°:  19436 
Num obs Galileo > 0°: 
Num obs All > 0°:  44601 

Epochs with < 5 SV > 15°:  (0.0 %) 
Epochs with all SV > 15°:  2858  (99.2 %) 
Epochs with full data > 15°:  2767  (96.1 %) 

Satellite Geometry 
DOP  Minimum  Maximum  Average 
PDOP  2.6  5.9  3.4 
GDOP  3.1  7.5  4.2 

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:  0.000076 ms (at 2014/02/02 14:25:30.00) 
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°:  39675  22426  17249 
% obs > 15°:   99.9 %  100.0 %  99.9 % 
Num possible obs > 15°:  39697  22437  17260 
Num complete obs > 15°:  39580  22405  17175 
% complete obs > 15°:   99.7 %  99.9 %  99.5 % 
Average # SV per Epoch:  13.8   7.8   6.0  
         
Obs L2 : Obs L1:  0.998   1.000   0.996  
Obs L5 : Obs L1: 

Cycle Slips         
Num cycle slips > 15°:  41  20  21 
% slips per complete obs:  0.104 %  0.089 %  0.122 % 
Num complete obs per slip:  96537   112025   81786  
IOD Slips > 15°:  89  14  75 
Outliers > 15°: 
LLI L1 : Obs L1:  0.0000   0.0000  
LLI L2 : Obs L2:  0.0002   0.0003  
LLI L5 : Obs L5: 

Multipath         
MP1 RMS:  0.410 m  0.412 m  0.406 m 
MP2 RMS:  0.468 m  0.433 m  0.513 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 99.8 %
N/A N/A
L2P 99.9 %
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 15.08° 55.76° 850 850 (100.0 %)
0 (0.0 %) 0
G2 15.11° 63.80° 577 577 (100.0 %)
0 (0.0 %) 1
G3 15.07° 62.89° 806 806 (100.0 %)
0 (0.0 %) 1
G4 15.11° 88.32° 670 670 (100.0 %)
0 (0.0 %) 1
G5 15.02° 83.86° 710 710 (100.0 %)
0 (0.0 %) 1
G6 15.05° 56.90° 854 854 (100.0 %)
0 (0.0 %) 0
G7 15.02° 53.24° 736 736 (100.0 %)
0 (0.0 %) 0
G8 15.02° 65.12° 577 577 (100.0 %)
0 (0.0 %) 0
G9 15.01° 73.26° 591 591 (100.0 %)
0 (0.0 %) 0
G10 15.03° 60.09° 827 827 (100.0 %)
0 (0.0 %) 0
G11 15.05° 60.59° 831 831 (100.0 %)
0 (0.0 %) 0
G12 15.05° 84.00° 686 686 (100.0 %)
0 (0.0 %) 0
G13 15.16° 79.74° 624 624 (100.0 %)
0 (0.0 %) 0
G14 15.07° 65.09° 584 584 (100.0 %)
0 (0.0 %) 1
G15 15.08° 69.89° 792 792 (100.0 %)
0 (0.0 %) 1
G16 15.11° 79.15° 719 719 (100.0 %)
0 (0.0 %) 0
G17 15.01° 61.68° 563 563 (100.0 %)
0 (0.0 %) 0
G18 15.00° 44.41° 784 776 (99.0 %)
0 (0.0 %) 4
G19 15.02° 61.59° 824 824 (100.0 %)
0 (0.0 %) 0
G20 15.00° 77.95° 742 742 (100.0 %)
0 (0.0 %) 0
G21 15.00° 54.79° 604 601 (99.5 %)
0 (0.0 %) 7
G22 15.02° 39.33° 813 813 (100.0 %)
0 (0.0 %) 2
G23 15.01° 66.99° 597 597 (100.0 %)
0 (0.0 %) 0
G24 15.04° 58.42° 843 843 (100.0 %)
0 (0.0 %) 0
G25 15.06° 65.91° 807 807 (100.0 %)
0 (0.0 %) 0
G26 15.02° 54.35° 826 826 (100.0 %)
0 (0.0 %) 0
G27 15.02° 55.50° 853 853 (100.0 %)
0 (0.0 %) 0
G28 15.03° 37.52° 821 821 (100.0 %)
0 (0.0 %) 0
G29 15.02° 77.60° 631 631 (100.0 %)
0 (0.0 %) 0
G31 15.00° 86.16° 669 669 (100.0 %)
0 (0.0 %) 1
G32 15.13° 78.63° 626 626 (100.0 %)
0 (0.0 %) 0
R1 15.00° 84.46° 660 660 (100.0 %)
0 (0.0 %) 1
R2 15.05° 71.25° 620 620 (100.0 %)
0 (0.0 %) 0
R3 15.02° 49.79° 756 756 (100.0 %)
0 (0.0 %) 0
R4 15.04° 50.50° 751 751 (100.0 %)
0 (0.0 %) 1
R5 15.07° 72.45° 616 616 (100.0 %)
0 (0.0 %) 0
R6 15.01° 82.42° 688 688 (100.0 %)
0 (0.0 %) 0
R7 15.01° 59.09° 823 820 (99.6 %)
0 (0.0 %) 0
R8 15.07° 59.56° 822 820 (99.8 %)
0 (0.0 %) 1
R9 15.00° 49.61° 950 950 (100.0 %)
0 (0.0 %) 3
R10 15.01° 69.86° 974 974 (100.0 %)
0 (0.0 %) 1
R11 15.03° 85.01° 763 763 (100.0 %)
0 (0.0 %) 0
R12 15.02° 60.17° 606 602 (99.3 %)
0 (0.0 %) 7
R13 15.08° 38.36° 711 711 (100.0 %)
0 (0.0 %) 0
R14 15.01° 60.23° 620 620 (100.0 %)
0 (0.0 %) 1
R15 15.09° 84.90° 533 533 (100.0 %)
0 (0.0 %) 0
R16 15.06° 70.71° 617 617 (100.0 %)
0 (0.0 %) 1
R17 15.03° 84.87° 540 540 (100.0 %)
0 (0.0 %) 0
R18 15.05° 61.74° 578 578 (100.0 %)
0 (0.0 %) 0
R19 15.10° 39.43° 803 803 (100.0 %)
0 (0.0 %) 0
R20 15.03° 85.89° 812 812 (100.0 %)
0 (0.0 %) 0
R21 15.06° 83.84° 799 799 (100.0 %)
0 (0.0 %) 2
R22 15.01° 50.75° 841 839 (99.8 %)
0 (0.0 %) 2
R23 15.03° 49.24° 755 755 (100.0 %)
0 (0.0 %) 0
R24 15.01° 69.90° 622 622 (100.0 %)
0 (0.0 %) 1

Missing phase observations by satellite > 15°: 
SV Observations Missing L1 Missing L2
G1 2.1 %
0.0 %
0.0 %
G2 1.5 %
0.0 %
0.0 %
G3 2.0 %
0.0 %
0.0 %
G4 1.7 %
0.0 %
0.0 %
G5 1.8 %
0.0 %
0.0 %
G6 2.2 %
0.0 %
0.0 %
G7 1.9 %
0.0 %
0.0 %
G8 1.5 %
0.0 %
0.0 %
G9 1.5 %
0.0 %
0.0 %
G10 2.1 %
0.0 %
0.0 %
G11 2.1 %
0.0 %
0.0 %
G12 1.7 %
0.0 %
0.0 %
G13 1.6 %
0.0 %
0.0 %
G14 1.5 %
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 2.0 %
0.9 %
1.4 %
G19 2.1 %
0.0 %
0.0 %
G20 1.9 %
0.0 %
0.0 %
G21 1.5 %
1.3 %
1.7 %
G22 2.0 %
0.0 %
0.0 %
G23 1.5 %
0.0 %
0.0 %
G24 2.1 %
0.0 %
0.0 %
G25 2.0 %
0.0 %
0.0 %
G26 2.1 %
0.0 %
0.0 %
G27 2.1 %
0.0 %
0.0 %
G28 2.1 %
0.0 %
0.0 %
G29 1.6 %
0.0 %
0.0 %
G31 1.7 %
0.0 %
0.0 %
G32 1.6 %
0.0 %
0.0 %
R1 1.7 %
0.0 %
0.0 %
R2 1.6 %
0.0 %
0.0 %
R3 1.9 %
0.0 %
0.0 %
R4 1.9 %
0.0 %
0.0 %
R5 1.6 %
0.0 %
0.0 %
R6 1.7 %
0.0 %
0.0 %
R7 2.1 %
0.4 %
4.3 %
R8 2.1 %
0.0 %
2.2 %
R9 2.4 %
0.0 %
0.1 %
R10 2.5 %
0.0 %
0.0 %
R11 1.9 %
0.0 %
0.0 %
R12 1.5 %
0.2 %
0.2 %
R13 1.8 %
0.0 %
0.0 %
R14 1.6 %
0.0 %
0.0 %
R15 1.3 %
0.0 %
0.0 %
R16 1.6 %
0.2 %
0.2 %
R17 1.4 %
0.0 %
0.0 %
R18 1.5 %
0.0 %
0.0 %
R19 2.0 %
0.0 %
0.0 %
R20 2.0 %
0.0 %
0.0 %
R21 2.0 %
0.0 %
0.1 %
R22 2.1 %
0.0 %
2.0 %
R23 1.9 %
0.0 %
0.0 %
R24 1.6 %
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 %
0.0 %
G15 0.0 %
0.0 %
G16 0.0 %
0.0 %
G17 0.0 %
0.0 %
G18 0.0 %
0.9 %
G19 0.0 %
0.0 %
G20 0.0 %
0.0 %
G21 0.0 %
0.7 %
G22 0.0 %
0.0 %
G23 0.0 %
0.0 %
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 %
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 %
0.0 %
R5 0.0 %
0.0 %
R6 0.0 %
0.0 %
R7 0.0 %
2.7 %
R8 0.0 %
1.7 %
R9 0.0 %
0.1 %
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 %
0.1 %
R22 0.0 %
0.8 %
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
0.2 %
80 - 85 0
0
0
1.3 %
75 - 80 0
0
0
1.9 %
70 - 75 0
0
0
2.3 %
65 - 70 0
0
0
3.7 %
60 - 65 0
0
0
5.3 %
55 - 60 0
1
0
7.8 %
50 - 55 0
0
0
8.5 %
45 - 50 2
0
0
9.4 %
40 - 45 1
1
0
8.3 %
35 - 40 1
0
0
10.2 %
30 - 35 0
0
0
9.9 %
25 - 30 3
3
0
9.6 %
20 - 25 3
3
0
9.7 %
15 - 20 10
13
0
11.8 %
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 8.2
7.2
- - -
G2 8.5
7.1
- - -
G3 8.4
6.4
- - -
G4 8.5
6.7
- - -
G5 8.6
7.4
- - -
G6 8.1
6.4
- - -
G7 8.0
6.4
- - -
G8 8.3
6.5
- - -
G9 8.5
6.9
- - -
G10 8.4
6.6
- - -
G11 8.4
6.4
- - -
G12 8.6
7.3
- - -
G13 8.4
6.6
- - -
G14 8.2
6.4
- - -
G15 8.5
7.2
- - -
G16 8.4
6.7
- - -
G17 8.5
7.1
- - -
G18 7.7
5.2
- - -
G19 8.3
7.1
- - -
G20 8.2
6.8
- - -
G21 7.6
5.8
- - -
G22 7.8
6.0
- - -
G23 8.6
6.5
- - -
G24 8.1
7.2
- - -
G25 8.2
7.0
- - -
G26 8.4
6.6
- - -
G27 8.4
7.3
- - -
G28 7.8
5.3
- - -
G29 8.4
7.4
- - -
G31 8.6
7.4
- - -
G32 8.4
6.8
- - -
R1 7.4
5.4
- - -
R2 7.9
7.4
- - -
R3 7.3
7.2
- - -
R4 7.6
7.2
- - -
R5 7.8
7.4
- - -
R6 7.8
7.3
- - -
R7 7.6
7.2
- - -
R8 7.5
7.1
- - -
R9 6.0
5.7
- - -
R10 7.8
5.8
- - -
R11 7.3
5.5
- - -
R12 6.1
6.3
- - -
R13 6.3
6.8
- - -
R14 5.9
5.3
- - -
R15 7.4
7.2
- - -
R16 7.4
7.3
- - -
R17 7.8
7.4
- - -
R18 7.3
7.2
- - -
R19 7.4
6.7
- - -
R20 6.3
7.3
- - -
R21 7.4
5.5
- - -
R22 7.7
7.5
- - -
R23 7.6
7.1
- - -
R24 7.7
7.3
- - -
Average GPS: 8.3
6.7
- - -
Average GLONASS: 7.3
6.8
- - -
Average Galileo: - - - - -
Average All: 7.8
6.7
- - -

Code multipath by satellite > 15°: 
SV Av Elev MP1 MP2 MP5 MP5b MP5a+b
G1 35.4 ° 0.37 m
0.42 m
- - -
G2 39.5 ° 0.42 m
0.47 m
- - -
G3 39.0 ° 0.32 m
0.38 m
- - -
G4 51.7 ° 0.41 m
0.41 m
- - -
G5 49.4 ° 0.39 m
0.43 m
- - -
G6 36.0 ° 0.37 m
0.43 m
- - -
G7 34.1 ° 0.44 m
0.40 m
- - -
G8 40.1 ° 0.46 m
0.42 m
- - -
G9 44.1 ° 0.52 m
0.48 m
- - -
G10 37.6 ° 0.36 m
0.46 m
- - -
G11 37.8 ° 0.38 m
0.43 m
- - -
G12 49.5 ° 0.50 m
0.46 m
- - -
G13 47.4 ° 0.41 m
0.35 m
- - -
G14 40.1 ° 0.41 m
0.53 m
- - -
G15 42.5 ° 0.32 m
0.42 m
- - -
G16 47.1 ° 0.34 m
0.40 m
- - -
G17 38.3 ° 0.41 m
0.47 m
- - -
G18 29.7 ° 0.48 m
0.49 m
- - -
G19 38.3 ° 0.35 m
0.41 m
- - -
G20 46.5 ° 0.54 m
0.41 m
- - -
G21 34.9 ° 0.35 m
0.41 m
- - -
G22 27.2 ° 0.51 m
0.49 m
- - -
G23 41.0 ° 0.38 m
0.37 m
- - -
G24 36.7 ° 0.38 m
0.44 m
- - -
G25 40.5 ° 0.47 m
0.40 m
- - -
G26 34.7 ° 0.43 m
0.45 m
- - -
G27 35.3 ° 0.37 m
0.43 m
- - -
G28 26.3 ° 0.48 m
0.54 m
- - -
G29 46.3 ° 0.43 m
0.45 m
- - -
G31 50.6 ° 0.42 m
0.37 m
- - -
G32 46.9 ° 0.37 m
0.43 m
- - -
R1 49.7 ° 0.42 m
0.54 m
- - -
R2 43.2 ° 0.44 m
0.54 m
- - -
R3 32.4 ° 0.41 m
0.53 m
- - -
R4 32.8 ° 0.36 m
0.41 m
- - -
R5 43.8 ° 0.36 m
0.46 m
- - -
R6 48.7 ° 0.37 m
0.51 m
- - -
R7 37.1 ° 0.38 m
0.47 m
- - -
R8 37.3 ° 0.51 m
0.56 m
- - -
R9 32.3 ° 0.36 m
0.50 m
- - -
R10 42.4 ° 0.33 m
0.45 m
- - -
R11 50.0 ° 0.38 m
0.49 m
- - -
R12 37.6 ° 0.46 m
0.60 m
- - -
R13 26.7 ° 0.44 m
0.49 m
- - -
R14 37.6 ° 0.39 m
0.53 m
- - -
R15 50.0 ° 0.43 m
0.57 m
- - -
R16 42.9 ° 0.44 m
0.53 m
- - -
R17 50.0 ° 0.48 m
0.61 m
- - -
R18 38.4 ° 0.37 m
0.44 m
- - -
R19 27.3 ° 0.46 m
0.61 m
- - -
R20 50.5 ° 0.39 m
0.51 m
- - -
R21 49.5 ° 0.53 m
0.51 m
- - -
R22 32.9 ° 0.37 m
0.56 m
- - -
R23 32.1 ° 0.34 m
0.45 m
- - -
R24 42.5 ° 0.33 m
0.44 m
- - -
Average GPS: - 0.41 m
0.43 m
- - -
Average GLONASS: - 0.41 m
0.51 m
- - -
Average Galileo: - - - - - -
Average All: - 0.41 m
0.47 m
- - -

Code multipath by satellite elevation > 15°: 
Elevation MP1 MP2 MP5 MP5b MP5a+b
85 - 90 0.25 m
0.21 m
- - -
80 - 85 0.24 m
0.25 m
- - -
75 - 80 0.22 m
0.27 m
- - -
70 - 75 0.25 m
0.28 m
- - -
65 - 70 0.26 m
0.28 m
- - -
60 - 65 0.29 m
0.33 m
- - -
55 - 60 0.29 m
0.33 m
- - -
50 - 55 0.34 m
0.33 m
- - -
45 - 50 0.36 m
0.42 m
- - -
40 - 45 0.43 m
0.49 m
- - -
35 - 40 0.44 m
0.51 m
- - -
30 - 35 0.46 m
0.57 m
- - -
25 - 30 0.50 m
0.58 m
- - -
20 - 25 0.52 m
0.59 m
- - -
15 - 20 0.53 m
0.61 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  
It took 2.1 seconds to process this file 
This file was processed using version 4.2.0.10