Leica SpiderQC v4.2 Quality Report


Program Run: 2014/09/05 00:01:21.93

File Details:


Observation File: 02na2470.14o
GPS Navigation File: 02na2470.14n
GLONASS Navigation File: 02na2470.14g
Quality Testing:  Fail (See below for details) 

Station Details:


Marker Name/Number:  Tiwi_RDH  02NA   
Observer/Agency:  DLPE Survey  DLPE Survey   
Receiver #/Type/Vers:  355552  LEICA GRX1200GGPRO  5.62/3.055 
Antenna #/Type:    LEIAX1202GG NONE   
Antenna Offsets (HEN):  0.000  0.000  0.000 
Approx Position (XYZ):  -4078495.928  4711380.453  -1355916.133 
Approx Position (plh):  12° 21' 21.35483" S  130° 52' 54.20363" E  117.758m 
Diff. Est-Header:  -1.8 m dX  9.7 m dY  -5.4 m dZ 
Diff. Est-Header:  11.2 m (2348 estimates) 

Session Summary:


Time of first obs:  2014/09/04 04:26:00.00 GPS 
Time of last obs:  2014/09/04 23:59:30.00 GPS 
Session length:  19.56 hours 
GPS week:  1808, day 4 
Observation interval:  30.00 seconds 
UTC leap seconds:  16 seconds 

Num SVs with obs:  54 
Num SVs with nav:  56 
Total GPS orbits:  143 
Total GLONASS orbits:  301 
Total Galileo orbits:  0 
SVs with obs:  G1 G2 G4 G5 G6 G7 G8 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:  G3 G9 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:  Pass  Value 18 slips, Threshold 35 slips 
Multipath:  Pass  Value 0.18m MP1 / 0.26m MP2, Threshold 0.5 m 
Data Completeness:  Pass  Value 100.0 %, Threshold 95.0 % 
Navigation Data:  Pass   
     
GLONASS Specific Tests 
Cycle Slips:  Fail  Value 110 slips, Threshold 79 slips 
Multipath:  Pass  Value 0.19m MP1 / 0.34m MP2, Threshold 0.5 m 
Data Completeness:  Pass  Value 98.4 %, Threshold 90.0 % 
Navigation Data:  Pass   

General Quality Indicators:


Tracking   
Num obs > 0°:  35593 
Num possible obs > 0°:  43472 
Num obs with invalid nav:  0 
Num obs without nav:  0 
Num obs to unhealthy SV:  0 
Num obs with WLF change:  0 
Num complete loss of lock:  0 

Num obs GPS > 0°:  20416 
Num obs GLONASS > 0°:  15177 
Num obs Galileo > 0°:  0 
Num obs All > 0°:  35593 

Epochs with < 5 SV > 15°:  0  (0.0 %) 
Epochs with all SV > 15°:  2167  (92.3 %) 
Epochs with full data > 15°:  2137  (91.0 %) 

Satellite Geometry 
DOP  Minimum  Maximum  Average 
PDOP  2.6  5.2  3.4 
GDOP  3.1  6.4  4.1 

Data Gaps 
Num epochs with data:  2348 
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:  0.000091 ms (at 2014/09/04 08:47:30.00) 
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°:  30926  17704  13222  - 
% obs > 15°:   99.4 %  100.0 %  98.7 %  - 
Num possible obs > 15°:  31107  17705  13402  - 
Num complete obs > 15°:  30896  17702  13194  - 
% complete obs > 15°:   99.3 %  100.0 %  98.4 %  - 
Average # SV per Epoch:  13.2   7.5   5.6   - 
         
Obs L2 : Obs L1:  0.999   1.000   0.998   - 
Obs L5 : Obs L1:  -  -  -  - 

Cycle Slips         
Num cycle slips > 15°:  128  18  110  - 
% slips per complete obs:  0.414 %  0.102 %  0.834 %  - 
Num complete obs per slip:  24138   98344   11995   - 
IOD Slips > 15°:  1  1  -  - 
Outliers > 15°:  -  -  -  - 
LLI L1 : Obs L1:  0.0027   0.0007   0.0052   - 
LLI L2 : Obs L2:  0.0029   0.0007   0.0059   - 
LLI L5 : Obs L5:  -  -  -  - 

Multipath         
MP1 RMS:  0.185 m  0.180 m  0.191 m  - 
MP2 RMS:  0.295 m  0.258 m  0.341 m  - 
MP5 RMS:  -  -  -  - 

Extended Quality Information:


Tracking by observation type > 15°: 
Type Code Phase SNR Doppler
L1 100.0 %
100.0 %
N/A N/A
L2 N/A 99.9 %
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 15.00° 27.85° 104 104 (100.0 %)
0 (0.0 %) 1
G2 15.00° 65.79° 608 608 (100.0 %)
0 (0.0 %) 0
G4 15.04° 37.41° 157 157 (100.0 %)
0 (0.0 %) 1
G5 15.06° 33.11° 924 924 (100.0 %)
0 (0.0 %) 0
G6 15.01° 44.86° 771 771 (100.0 %)
0 (0.0 %) 1
G7 15.01° 58.06° 580 580 (100.0 %)
0 (0.0 %) 1
G8 15.04° 64.10° 436 436 (100.0 %)
0 (0.0 %) 1
G10 15.07° 58.98° 597 597 (100.0 %)
0 (0.0 %) 0
G11 15.08° 48.52° 177 177 (100.0 %)
0 (0.0 %) 0
G12 15.05° 58.80° 864 864 (100.0 %)
0 (0.0 %) 0
G13 15.13° 41.78° 520 520 (100.0 %)
0 (0.0 %) 2
G14 15.05° 68.82° 609 609 (100.0 %)
0 (0.0 %) 1
G15 15.00° 45.76° 835 835 (100.0 %)
0 (0.0 %) 0
G16 15.07° 37.42° 515 515 (100.0 %)
0 (0.0 %) 1
G17 15.02° 70.17° 610 610 (100.0 %)
0 (0.0 %) 0
G18 15.03° 88.06° 666 666 (100.0 %)
0 (0.0 %) 0
G19 15.09° 59.52° 369 369 (100.0 %)
0 (0.0 %) 0
G20 15.08° 69.06° 251 251 (100.0 %)
0 (0.0 %) 1
G21 15.02° 48.62° 928 928 (100.0 %)
0 (0.0 %) 0
G22 15.05° 67.62° 772 772 (100.0 %)
0 (0.0 %) 0
G23 15.04° 35.48° 452 452 (100.0 %)
0 (0.0 %) 2
G24 15.05° 80.18° 641 641 (100.0 %)
0 (0.0 %) 1
G25 15.06° 80.56° 677 677 (100.0 %)
0 (0.0 %) 0
G26 15.02° 71.81° 619 619 (100.0 %)
0 (0.0 %) 0
G27 15.03° 71.78° 523 523 (100.0 %)
0 (0.0 %) 0
G28 15.01° 76.79° 666 666 (100.0 %)
0 (0.0 %) 0
G29 15.00° 44.95° 974 974 (100.0 %)
0 (0.0 %) 0
G30 15.25° 45.36° 834 833 (99.9 %)
0 (0.0 %) 4
G31 15.03° 46.31° 580 580 (100.0 %)
0 (0.0 %) 0
G32 15.11° 34.48° 446 446 (100.0 %)
0 (0.0 %) 1
R1 15.22° 81.85° 463 463 (100.0 %)
0 (0.0 %) 2
R2 15.09° 71.16° 515 515 (100.0 %)
0 (0.0 %) 0
R3 15.02° 45.09° 632 632 (100.0 %)
0 (0.0 %) 0
R4 15.02° 43.61° 647 647 (100.0 %)
0 (0.0 %) 0
R5 15.02° 69.30° 514 514 (100.0 %)
0 (0.0 %) 0
R6 15.17° 82.36° 554 554 (100.0 %)
0 (0.0 %) 1
R7 15.05° 56.31° 615 615 (100.0 %)
0 (0.0 %) 1
R8 15.08° 54.31° 619 619 (100.0 %)
0 (0.0 %) 1
R9 15.04° 45.29° 564 564 (100.0 %)
0 (0.0 %) 0
R10 15.02° 32.28° 355 355 (100.0 %)
0 (0.0 %) 0
R11 15.12° 61.22° 198 198 (100.0 %)
0 (0.0 %) 2
R12 15.06° 57.00° 442 442 (100.0 %)
0 (0.0 %) 2
R13 15.03° 31.00° 912 912 (100.0 %)
0 (0.0 %) 15
R14 15.01° 54.22° 600 600 (100.0 %)
0 (0.0 %) 0
R15 15.01° 80.29° 546 546 (100.0 %)
0 (0.0 %) 0
R16 15.16° 70.54° 513 513 (100.0 %)
0 (0.0 %) 0
R17 15.06° 84.70° 547 547 (100.0 %)
0 (0.0 %) 0
R18 15.00° 57.73° 597 597 (100.0 %)
0 (0.0 %) 0
R19 15.05° 30.84° 910 910 (100.0 %)
0 (0.0 %) 0
R20 15.02° 55.05° 604 604 (100.0 %)
0 (0.0 %) 0
R21 15.10° 80.10° 529 349 (66.0 %)
0 (0.0 %) 86
R22 15.01° 73.01° 493 493 (100.0 %)
0 (0.0 %) 0
R23 15.05° 42.51° 527 527 (100.0 %)
0 (0.0 %) 0
R24 15.01° 66.99° 506 506 (100.0 %)
0 (0.0 %) 0

Missing phase observations by satellite > 15°: 
SV Observations Missing L1 Missing L2
G1 0.3 %
0.0 %
0.0 %
G2 2.0 %
0.0 %
0.0 %
G4 0.5 %
0.0 %
0.0 %
G5 3.0 %
0.0 %
0.0 %
G6 2.5 %
0.0 %
0.0 %
G7 1.9 %
0.0 %
0.0 %
G8 1.4 %
0.0 %
0.0 %
G10 1.9 %
0.0 %
0.0 %
G11 0.6 %
0.0 %
0.0 %
G12 2.8 %
0.0 %
0.0 %
G13 1.7 %
0.0 %
0.0 %
G14 2.0 %
0.0 %
0.0 %
G15 2.7 %
0.0 %
0.0 %
G16 1.7 %
0.0 %
0.0 %
G17 2.0 %
0.0 %
0.0 %
G18 2.2 %
0.0 %
0.0 %
G19 1.2 %
0.0 %
0.0 %
G20 0.8 %
0.0 %
0.0 %
G21 3.0 %
0.0 %
0.0 %
G22 2.5 %
0.0 %
0.0 %
G23 1.5 %
0.0 %
0.0 %
G24 2.1 %
0.0 %
0.0 %
G25 2.2 %
0.0 %
0.0 %
G26 2.0 %
0.0 %
0.0 %
G27 1.7 %
0.0 %
0.0 %
G28 2.2 %
0.0 %
0.0 %
G29 3.1 %
0.0 %
0.0 %
G30 2.7 %
0.0 %
0.2 %
G31 1.9 %
0.0 %
0.0 %
G32 1.4 %
0.0 %
0.0 %
R1 1.5 %
0.0 %
0.0 %
R2 1.7 %
0.0 %
0.0 %
R3 2.0 %
0.0 %
0.0 %
R4 2.1 %
0.0 %
0.0 %
R5 1.7 %
0.0 %
0.0 %
R6 1.8 %
0.0 %
0.0 %
R7 2.0 %
0.0 %
0.0 %
R8 2.0 %
0.0 %
0.0 %
R9 1.8 %
0.0 %
0.0 %
R10 1.1 %
0.0 %
0.0 %
R11 0.6 %
0.0 %
0.0 %
R12 1.4 %
0.0 %
0.0 %
R13 2.9 %
0.1 %
0.0 %
R14 1.9 %
0.0 %
0.0 %
R15 1.8 %
0.0 %
0.0 %
R16 1.7 %
0.0 %
0.0 %
R17 1.8 %
0.0 %
0.0 %
R18 1.9 %
0.0 %
0.0 %
R19 2.9 %
0.0 %
0.0 %
R20 2.0 %
0.0 %
0.0 %
R21 1.1 %
0.0 %
7.7 %
R22 1.6 %
0.0 %
0.0 %
R23 1.7 %
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 %
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 %
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 %
0.0 %
G20 0.0 %
0.0 %
G21 0.0 %
0.0 %
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 %
G30 0.0 %
0.2 %
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 %
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 0.1 %
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 %
7.7 %
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
0.1 %
80 - 85 0
3
0
0.7 %
75 - 80 0
17
0
1.4 %
70 - 75 0
10
0
2.0 %
65 - 70 1
8
0
3.7 %
60 - 65 1
6
0
3.3 %
55 - 60 1
7
0
5.2 %
50 - 55 0
5
0
5.6 %
45 - 50 0
6
0
5.9 %
40 - 45 0
6
0
9.5 %
35 - 40 3
8
0
9.1 %
30 - 35 1
6
0
12.8 %
25 - 30 2
5
0
12.7 %
20 - 25 5
19
0
13.3 %
15 - 20 4
4
0
14.5 %
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 7.4
5.3
- - -
G2 8.5
6.9
- - -
G4 7.8
5.2
- - -
G5 8.0
6.2
- - -
G6 7.9
6.3
- - -
G7 8.3
6.4
- - -
G8 8.3
6.1
- - -
G10 8.5
6.3
- - -
G11 8.2
5.5
- - -
G12 8.5
6.7
- - -
G13 8.4
5.6
- - -
G14 8.4
6.5
- - -
G15 8.2
6.2
- - -
G16 7.9
5.3
- - -
G17 8.6
7.2
- - -
G18 8.6
6.4
- - -
G19 8.7
7.3
- - -
G20 8.5
6.5
- - -
G21 7.9
5.6
- - -
G22 8.5
6.7
- - -
G23 8.2
5.4
- - -
G24 8.4
7.2
- - -
G25 8.4
6.9
- - -
G26 8.6
6.7
- - -
G27 8.7
7.5
- - -
G28 8.6
6.5
- - -
G29 8.4
6.6
- - -
G30 8.4
6.6
- - -
G31 8.1
5.9
- - -
G32 7.8
5.2
- - -
R1 8.1
5.7
- - -
R2 8.2
7.4
- - -
R3 7.1
6.7
- - -
R4 7.4
6.6
- - -
R5 8.2
7.4
- - -
R6 8.2
6.6
- - -
R7 8.0
7.3
- - -
R8 7.9
7.1
- - -
R9 6.0
4.1
- - -
R10 6.9
4.8
- - -
R11 7.5
5.4
- - -
R12 6.9
6.5
- - -
R13 6.5
6.7
- - -
R14 5.9
5.5
- - -
R15 7.5
7.1
- - -
R16 7.5
7.2
- - -
R17 8.2
7.4
- - -
R18 8.0
7.3
- - -
R19 7.7
6.9
- - -
R20 6.4
7.4
- - -
R21 8.2
7.4
- - -
R22 7.9
7.0
- - -
R23 7.7
7.0
- - -
R24 7.5
5.7
- - -
Average GPS: 8.3
6.3
- - -
Average GLONASS: 7.5
6.6
- - -
Average Galileo: - - - - -
Average All: 7.9
6.4
- - -

Code multipath by satellite > 15°: 
SV Av Elev MP1 MP2 MP5 MP5b MP5a+b
G1 21.4 ° 0.22 m
0.28 m
- - -
G2 40.4 ° 0.19 m
0.30 m
- - -
G4 26.2 ° 0.22 m
0.42 m
- - -
G5 24.1 ° 0.21 m
0.35 m
- - -
G6 29.9 ° 0.20 m
0.34 m
- - -
G7 36.5 ° 0.17 m
0.23 m
- - -
G8 39.6 ° 0.20 m
0.24 m
- - -
G10 37.0 ° 0.16 m
0.37 m
- - -
G11 31.8 ° 0.22 m
0.25 m
- - -
G12 36.9 ° 0.17 m
0.23 m
- - -
G13 28.5 ° 0.15 m
0.18 m
- - -
G14 41.9 ° 0.19 m
0.19 m
- - -
G15 30.4 ° 0.17 m
0.28 m
- - -
G16 26.2 ° 0.21 m
0.29 m
- - -
G17 42.6 ° 0.20 m
0.23 m
- - -
G18 51.5 ° 0.17 m
0.22 m
- - -
G19 37.3 ° 0.15 m
0.18 m
- - -
G20 42.1 ° 0.15 m
0.20 m
- - -
G21 31.8 ° 0.18 m
0.24 m
- - -
G22 41.3 ° 0.20 m
0.27 m
- - -
G23 25.3 ° 0.17 m
0.25 m
- - -
G24 47.6 ° 0.15 m
0.20 m
- - -
G25 47.8 ° 0.15 m
0.19 m
- - -
G26 43.4 ° 0.14 m
0.28 m
- - -
G27 43.4 ° 0.12 m
0.16 m
- - -
G28 45.9 ° 0.20 m
0.28 m
- - -
G29 30.0 ° 0.18 m
0.29 m
- - -
G30 30.3 ° 0.16 m
0.27 m
- - -
G31 30.7 ° 0.21 m
0.29 m
- - -
G32 24.8 ° 0.19 m
0.23 m
- - -
R1 48.5 ° 0.13 m
0.23 m
- - -
R2 43.1 ° 0.13 m
0.36 m
- - -
R3 30.1 ° 0.22 m
0.46 m
- - -
R4 29.3 ° 0.24 m
0.47 m
- - -
R5 42.2 ° 0.21 m
0.25 m
- - -
R6 48.8 ° 0.17 m
0.26 m
- - -
R7 35.7 ° 0.19 m
0.27 m
- - -
R8 34.7 ° 0.23 m
0.30 m
- - -
R9 30.2 ° 0.19 m
0.30 m
- - -
R10 23.6 ° 0.26 m
0.67 m
- - -
R11 38.2 ° 0.18 m
0.30 m
- - -
R12 36.0 ° 0.20 m
0.28 m
- - -
R13 23.0 ° 0.24 m
0.46 m
- - -
R14 34.6 ° 0.27 m
0.32 m
- - -
R15 47.7 ° 0.15 m
0.19 m
- - -
R16 42.9 ° 0.14 m
0.21 m
- - -
R17 49.9 ° 0.18 m
0.41 m
- - -
R18 36.4 ° 0.19 m
0.45 m
- - -
R19 22.9 ° 0.24 m
0.50 m
- - -
R20 35.0 ° 0.19 m
0.28 m
- - -
R21 47.6 ° 0.13 m
0.28 m
- - -
R22 44.0 ° 0.14 m
0.28 m
- - -
R23 28.8 ° 0.19 m
0.33 m
- - -
R24 41.0 ° 0.19 m
0.34 m
- - -
Average GPS: - 0.18 m
0.26 m
- - -
Average GLONASS: - 0.19 m
0.34 m
- - -
Average Galileo: - - - - - -
Average All: - 0.18 m
0.29 m
- - -

Code multipath by satellite elevation > 15°: 
Elevation MP1 MP2 MP5 MP5b MP5a+b
85 - 90 0.06 m
0.10 m
- - -
80 - 85 0.07 m
0.10 m
- - -
75 - 80 0.08 m
0.12 m
- - -
70 - 75 0.09 m
0.14 m
- - -
65 - 70 0.09 m
0.15 m
- - -
60 - 65 0.10 m
0.15 m
- - -
55 - 60 0.10 m
0.16 m
- - -
50 - 55 0.12 m
0.20 m
- - -
45 - 50 0.12 m
0.21 m
- - -
40 - 45 0.13 m
0.23 m
- - -
35 - 40 0.16 m
0.26 m
- - -
30 - 35 0.18 m
0.28 m
- - -
25 - 30 0.24 m
0.36 m
- - -
20 - 25 0.27 m
0.44 m
- - -
15 - 20 0.30 m
0.46 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 1.4 seconds to process this file 
-  This file was processed using version 4.2.0.10