Leica SpiderQC v4.2 Quality Report


Program Run: 2013/10/14 00:00:21.50

File Details:


Observation File: 02na2860.13o
GPS Navigation File: 02na2860.13n
GLONASS Navigation File: 02na2860.13g
Quality Testing:  Fail (See below for details) 

Station Details:


Marker Name/Number:  Tiwi_RDH  02NA   
Observer/Agency:       
Receiver #/Type/Vers:  355552  LEICA GRX1200GGPRO  5.62/3.014 
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:  -1.5 m dX  10.1 m dY  -3.4 m dZ 
Diff. Est-Header:  10.7 m (2880 estimates) 

Session Summary:


Time of first obs:  2013/10/13 00:00:00.00 GPS 
Time of last obs:  2013/10/13 23:59:30.00 GPS 
Session length:  23.99 hours 
GPS week:  1762, day 0 
Observation interval:  30.00 seconds 
UTC leap seconds:  16 seconds 

Num SVs with obs:  53 
Num SVs with nav:  54 
Total GPS orbits:  191 
Total GLONASS orbits:  342 
Total Galileo orbits:  0 
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 R11 R12 R13 R15 R16 R17 R18 R19 R20 R21 R22 R23 R24  
SVs without obs:  G30 R10 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 R11 R12 R13 R15 R16 R17 R18 R19 R20 R21 R22 R23 R24  
SVs without nav:  R10 R14  
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 150 slips, Threshold 47 slips 
Multipath:  Pass  Value 0.17m MP1 / 0.23m MP2, Threshold 0.5 m 
Data Completeness:  Pass  Value 99.5 %, Threshold 95.0 % 
Navigation Data:  Pass   
     
GLONASS Specific Tests 
Cycle Slips:  Pass  Value 64 slips, Threshold 86 slips 
Multipath:  Pass  Value 0.19m MP1 / 0.34m MP2, Threshold 0.5 m 
Data Completeness:  Pass  Value 96.4 %, Threshold 90.0 % 
Navigation Data:  Fail   

General Quality Indicators:


Tracking   
Num obs > 0°:  43442 
Num possible obs > 0°:  52407 
Num obs with invalid nav:  0 
Num obs without nav:  8 
Num obs to unhealthy SV:  2 
Num obs with WLF change:  0 
Num complete loss of lock:  0 

Num obs GPS > 0°:  26945 
Num obs GLONASS > 0°:  16497 
Num obs Galileo > 0°:  0 
Num obs All > 0°:  43442 

Epochs with < 5 SV > 15°:  0  (0.0 %) 
Epochs with all SV > 15°:  2737  (95.0 %) 
Epochs with full data > 15°:  2333  (81.0 %) 

Satellite Geometry 
DOP  Minimum  Maximum  Average 
PDOP  2.6  6.8  3.4 
GDOP  3.1  8.4  4.1 

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 
G26  4.500  1330 / 1339  20.60° / 18.97°  0.66° / 1.85° 
R15  2.000  1535 / 1539  16.06° / 15.13°  24.35° / 24.01° 
R16  2.500  1679 / 1684  29.79° / 29.79°  7.22° / 7.22° 
G24  4.000  1708 / 1716  22.25° / 20.75°  6.08° / 6.86° 
R16  7.500  1702 / 1717  23.57° / 19.82°  7.42° / 7.77° 
Total:  20.500 (41 observations) 

Receiver Clock 
Clock Slips > 15°:  0 
Max RX clock offset:  0.000072 ms (at 2013/10/13 10:51:30.00) 
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°:  38067  23746  14321  - 
% obs > 15°:   99.6 %  99.6 %  99.5 %  - 
Num possible obs > 15°:  38223  23835  14388  - 
Num complete obs > 15°:  37589  23712  13877  - 
% complete obs > 15°:   98.3 %  99.5 %  96.4 %  - 
Average # SV per Epoch:  13.2   8.2   5.0   - 
         
Obs L2 : Obs L1:  0.988   0.999   0.970   - 
Obs L5 : Obs L1:  -  -  -  - 

Cycle Slips         
Num cycle slips > 15°:  214  150  64  - 
% slips per complete obs:  0.569 %  0.633 %  0.461 %  - 
Num complete obs per slip:  17565   15808   21683   - 
IOD Slips > 15°:  414  10  404  - 
Outliers > 15°:  -  -  -  - 
LLI L1 : Obs L1:  0.0033   0.0037   0.0026   - 
LLI L2 : Obs L2:  0.0038   0.0050   0.0018   - 
LLI L5 : Obs L5:  -  -  -  - 

Multipath         
MP1 RMS:  0.177 m  0.171 m  0.185 m  - 
MP2 RMS:  0.276 m  0.232 m  0.342 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 98.8 %
N/A N/A
L2P 98.8 %
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 15.10° 75.43° 637 637 (100.0 %)
0 (0.0 %) 0
G2 15.09° 65.84° 608 608 (100.0 %)
0 (0.0 %) 0
G3 15.11° 57.44° 602 602 (100.0 %)
0 (0.0 %) 0
G4 15.01° 43.66° 855 855 (100.0 %)
0 (0.0 %) 0
G5 15.00° 33.12° 924 923 (99.9 %)
0 (0.0 %) 22
G6 15.08° 73.96° 627 627 (100.0 %)
0 (0.0 %) 0
G7 15.06° 55.84° 898 898 (100.0 %)
0 (0.0 %) 0
G8 15.04° 43.99° 973 973 (100.0 %)
0 (0.0 %) 0
G9 15.01° 38.95° 1006 1006 (100.0 %)
0 (0.0 %) 0
G10 15.02° 60.23° 600 600 (100.0 %)
0 (0.0 %) 0
G11 15.04° 69.29° 659 659 (100.0 %)
0 (0.0 %) 1
G12 15.03° 60.12° 842 841 (99.9 %)
0 (0.0 %) 14
G13 15.02° 44.78° 989 989 (100.0 %)
0 (0.0 %) 0
G14 15.11° 71.82° 613 599 (97.7 %)
0 (0.0 %) 24
G15 15.02° 45.31° 841 841 (100.0 %)
0 (0.0 %) 7
G16 15.01° 36.94° 888 888 (100.0 %)
0 (0.0 %) 0
G17 15.01° 71.72° 614 614 (100.0 %)
0 (0.0 %) 1
G18 15.03° 88.55° 664 655 (98.6 %)
0 (0.0 %) 39
G19 15.03° 57.60° 589 589 (100.0 %)
0 (0.0 %) 0
G20 15.02° 73.91° 751 751 (100.0 %)
0 (0.0 %) 1
G21 15.08° 50.21° 922 906 (98.3 %)
0 (0.0 %) 18
G22 15.01° 69.84° 754 754 (100.0 %)
0 (0.0 %) 0
G23 15.03° 40.93° 987 987 (100.0 %)
0 (0.0 %) 0
G24 15.09° 81.54° 643 620 (96.4 %)
0 (0.0 %) 12
G25 15.02° 83.45° 670 670 (100.0 %)
0 (0.0 %) 0
G26 15.12° 73.20° 619 594 (96.0 %)
0 (0.0 %) 8
G27 15.13° 71.71° 623 623 (100.0 %)
0 (0.0 %) 1
G28 15.11° 76.62° 666 666 (100.0 %)
0 (0.0 %) 1
G29 15.05° 42.72° 978 978 (100.0 %)
0 (0.0 %) 0
G31 15.04° 46.04° 836 836 (100.0 %)
0 (0.0 %) 0
G32 15.10° 49.78° 957 957 (100.0 %)
0 (0.0 %) 1
R1 15.05° 55.12° 1151 1151 (100.0 %)
0 (0.0 %) 0
R2 15.05° 81.37° 597 597 (100.0 %)
0 (0.0 %) 0
R3 15.13° 71.25° 515 515 (100.0 %)
0 (0.0 %) 0
R4 15.05° 44.80° 634 634 (100.0 %)
0 (0.0 %) 0
R5 15.01° 43.27° 649 643 (99.1 %)
8 (1.2 %) 20
R6 15.09° 69.78° 514 509 (99.0 %)
0 (0.0 %) 5
R7 15.00° 83.44° 551 551 (100.0 %)
0 (0.0 %) 1
R8 15.06° 56.62° 941 941 (100.0 %)
0 (0.0 %) 0
R9 15.12° 71.84° 512 512 (100.0 %)
0 (0.0 %) 0
R11 15.02° 68.38° 875 875 (100.0 %)
0 (0.0 %) 1
R12 15.04° 84.46° 719 719 (100.0 %)
0 (0.0 %) 0
R13 15.03° 56.21° 633 633 (100.0 %)
0 (0.0 %) 0
R15 15.04° 54.55° 592 560 (94.6 %)
0 (0.0 %) 25
R16 15.05° 81.30° 553 529 (95.7 %)
0 (0.0 %) 10
R17 15.01° 67.96° 600 600 (100.0 %)
0 (0.0 %) 0
R18 15.04° 85.65° 549 549 (100.0 %)
0 (0.0 %) 1
R19 15.01° 53.77° 617 617 (100.0 %)
0 (0.0 %) 0
R20 15.00° 31.68° 910 910 (100.0 %)
0 (0.0 %) 0
R22 15.02° 79.62° 552 552 (100.0 %)
0 (0.0 %) 1
R23 15.00° 72.15° 814 814 (100.0 %)
0 (0.0 %) 0
R24 15.03° 46.92° 910 910 (100.0 %)
0 (0.0 %) 0

Missing phase observations by satellite > 15°: 
SV Observations Missing L1 Missing L2
G1 1.7 %
0.0 %
0.0 %
G2 1.6 %
0.0 %
0.0 %
G3 1.6 %
0.0 %
0.0 %
G4 2.2 %
0.0 %
0.0 %
G5 2.4 %
0.0 %
0.4 %
G6 1.6 %
0.0 %
0.0 %
G7 2.4 %
0.0 %
0.0 %
G8 2.6 %
0.0 %
0.0 %
G9 2.6 %
0.0 %
0.0 %
G10 1.6 %
0.0 %
0.0 %
G11 1.7 %
0.0 %
0.0 %
G12 2.2 %
0.0 %
0.2 %
G13 2.6 %
0.0 %
0.0 %
G14 1.6 %
0.0 %
0.7 %
G15 2.2 %
0.0 %
0.1 %
G16 2.3 %
0.0 %
0.0 %
G17 1.6 %
0.0 %
0.0 %
G18 1.7 %
0.0 %
1.4 %
G19 1.5 %
0.0 %
0.0 %
G20 2.0 %
0.0 %
0.0 %
G21 2.4 %
0.0 %
0.6 %
G22 2.0 %
0.0 %
0.0 %
G23 2.6 %
0.0 %
0.0 %
G24 1.6 %
0.0 %
0.6 %
G25 1.8 %
0.0 %
0.0 %
G26 1.6 %
0.0 %
0.8 %
G27 1.6 %
0.0 %
0.0 %
G28 1.7 %
0.0 %
0.0 %
G29 2.6 %
0.0 %
0.0 %
G31 2.2 %
0.0 %
0.0 %
G32 2.5 %
0.0 %
0.0 %
R1 3.0 %
0.0 %
0.0 %
R2 1.6 %
0.0 %
0.0 %
R3 1.4 %
0.0 %
0.0 %
R4 1.7 %
0.0 %
0.0 %
R5 1.7 %
0.0 %
65.6 %
R6 1.3 %
0.0 %
0.8 %
R7 1.4 %
0.0 %
0.0 %
R8 2.5 %
0.0 %
0.0 %
R9 1.3 %
0.0 %
0.0 %
R11 2.3 %
0.0 %
0.0 %
R12 1.9 %
0.0 %
0.0 %
R13 1.7 %
0.0 %
0.0 %
R15 1.5 %
0.9 %
1.3 %
R16 1.4 %
0.0 %
1.1 %
R17 1.6 %
0.0 %
0.0 %
R18 1.4 %
0.0 %
0.0 %
R19 1.6 %
0.0 %
0.0 %
R20 2.4 %
0.0 %
0.0 %
R22 1.5 %
0.0 %
0.0 %
R23 2.1 %
0.0 %
0.0 %
R24 2.4 %
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 %
0.4 %
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 %
0.2 %
G13 0.0 %
0.0 %
G14 0.0 %
0.7 %
G15 0.0 %
0.1 %
G16 0.0 %
0.0 %
G17 0.0 %
0.0 %
G18 0.0 %
1.4 %
G19 0.0 %
0.0 %
G20 0.0 %
0.0 %
G21 0.0 %
0.6 %
G22 0.0 %
0.0 %
G23 0.0 %
0.0 %
G24 0.0 %
0.6 %
G25 0.0 %
0.0 %
G26 0.0 %
0.8 %
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 %
65.6 %
R6 0.0 %
0.8 %
R7 0.0 %
0.0 %
R8 0.0 %
0.0 %
R9 0.0 %
0.0 %
R11 0.0 %
0.0 %
R12 0.0 %
0.0 %
R13 0.0 %
0.0 %
R15 0.9 %
1.3 %
R16 0.0 %
1.1 %
R17 0.0 %
0.0 %
R18 0.0 %
0.0 %
R19 0.0 %
0.0 %
R20 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
0.1 %
80 - 85 0
0
0
0.9 %
75 - 80 0
0
0
1.3 %
70 - 75 0
0
0
2.8 %
65 - 70 0
0
0
3.9 %
60 - 65 0
0
0
3.3 %
55 - 60 0
0
0
4.7 %
50 - 55 0
0
0
5.5 %
45 - 50 0
0
0
6.1 %
40 - 45 0
3
0
9.6 %
35 - 40 0
10
0
11.3 %
30 - 35 1
0
0
12.2 %
25 - 30 29
8
0
12.8 %
20 - 25 56
18
0
12.4 %
15 - 20 64
25
0
13.0 %
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
7.1
- - -
G2 8.5
6.8
- - -
G3 8.4
6.0
- - -
G4 7.9
5.1
- - -
G5 7.8
6.0
- - -
G6 8.4
6.4
- - -
G7 8.3
6.4
- - -
G8 8.1
5.7
- - -
G9 8.0
5.9
- - -
G10 8.4
6.1
- - -
G11 8.5
6.3
- - -
G12 8.4
6.5
- - -
G13 8.1
5.3
- - -
G14 8.3
6.4
- - -
G15 8.1
6.0
- - -
G16 7.7
4.9
- - -
G17 8.5
7.1
- - -
G18 8.5
6.3
- - -
G19 8.3
6.7
- - -
G20 8.4
6.4
- - -
G21 7.8
5.5
- - -
G22 8.5
6.7
- - -
G23 8.4
5.7
- - -
G24 8.3
7.1
- - -
G25 8.3
6.8
- - -
G26 8.6
6.7
- - -
G27 8.5
7.2
- - -
G28 8.5
6.4
- - -
G29 8.1
6.5
- - -
G31 8.1
6.0
- - -
G32 8.1
5.7
- - -
R1 7.7
5.1
- - -
R2 8.1
6.9
- - -
R3 7.6
7.2
- - -
R4 7.5
6.4
- - -
R5 7.5
6.0
- - -
R6 8.2
7.3
- - -
R7 8.2
7.3
- - -
R8 7.8
6.5
- - -
R9 7.6
6.2
- - -
R11 7.2
4.9
- - -
R12 7.6
6.4
- - -
R13 7.5
6.6
- - -
R15 7.5
6.6
- - -
R16 7.6
7.0
- - -
R17 8.1
7.0
- - -
R18 8.3
7.3
- - -
R19 8.0
6.8
- - -
R20 5.9
6.7
- - -
R22 8.2
7.4
- - -
R23 7.8
6.8
- - -
R24 7.8
6.8
- - -
Average GPS: 8.3
6.2
- - -
Average GLONASS: 7.7
6.6
- - -
Average Galileo: - - - - -
Average All: 8.0
6.4
- - -

Code multipath by satellite > 15°: 
SV Av Elev MP1 MP2 MP5 MP5b MP5a+b
G1 45.3 ° 0.14 m
0.18 m
- - -
G2 40.5 ° 0.18 m
0.21 m
- - -
G3 36.3 ° 0.17 m
0.22 m
- - -
G4 29.3 ° 0.21 m
0.28 m
- - -
G5 24.1 ° 0.21 m
0.29 m
- - -
G6 44.5 ° 0.16 m
0.20 m
- - -
G7 35.4 ° 0.17 m
0.22 m
- - -
G8 29.5 ° 0.17 m
0.22 m
- - -
G9 27.0 ° 0.17 m
0.23 m
- - -
G10 37.6 ° 0.17 m
0.26 m
- - -
G11 42.2 ° 0.14 m
0.19 m
- - -
G12 37.6 ° 0.19 m
0.24 m
- - -
G13 29.9 ° 0.18 m
0.20 m
- - -
G14 43.5 ° 0.21 m
0.22 m
- - -
G15 30.2 ° 0.18 m
0.27 m
- - -
G16 26.0 ° 0.21 m
0.26 m
- - -
G17 43.4 ° 0.18 m
0.24 m
- - -
G18 51.8 ° 0.17 m
0.23 m
- - -
G19 36.3 ° 0.17 m
0.22 m
- - -
G20 44.5 ° 0.16 m
0.20 m
- - -
G21 32.6 ° 0.17 m
0.27 m
- - -
G22 42.4 ° 0.20 m
0.25 m
- - -
G23 28.0 ° 0.16 m
0.21 m
- - -
G24 48.3 ° 0.15 m
0.20 m
- - -
G25 49.2 ° 0.15 m
0.23 m
- - -
G26 44.2 ° 0.14 m
0.24 m
- - -
G27 43.4 ° 0.14 m
0.19 m
- - -
G28 45.9 ° 0.18 m
0.25 m
- - -
G29 28.9 ° 0.17 m
0.26 m
- - -
G31 30.5 ° 0.19 m
0.28 m
- - -
G32 32.4 ° 0.15 m
0.25 m
- - -
R1 35.1 ° 0.20 m
0.37 m
- - -
R2 48.2 ° 0.15 m
0.25 m
- - -
R3 43.2 ° 0.18 m
0.29 m
- - -
R4 29.9 ° 0.24 m
0.43 m
- - -
R5 29.1 ° 0.25 m
0.74 m
- - -
R6 42.4 ° 0.20 m
0.40 m
- - -
R7 49.2 ° 0.19 m
0.27 m
- - -
R8 35.8 ° 0.21 m
0.29 m
- - -
R9 43.5 ° 0.15 m
0.29 m
- - -
R11 41.7 ° 0.19 m
0.36 m
- - -
R12 49.8 ° 0.15 m
0.23 m
- - -
R13 35.6 ° 0.20 m
0.32 m
- - -
R15 34.8 ° 0.15 m
0.32 m
- - -
R16 48.2 ° 0.13 m
0.20 m
- - -
R17 41.5 ° 0.20 m
0.36 m
- - -
R18 50.3 ° 0.15 m
0.29 m
- - -
R19 34.4 ° 0.20 m
0.39 m
- - -
R20 23.3 ° 0.24 m
0.52 m
- - -
R22 47.3 ° 0.15 m
0.21 m
- - -
R23 43.6 ° 0.15 m
0.30 m
- - -
R24 31.0 ° 0.20 m
0.37 m
- - -
Average GPS: - 0.17 m
0.23 m
- - -
Average GLONASS: - 0.19 m
0.34 m
- - -
Average Galileo: - - - - - -
Average All: - 0.18 m
0.28 m
- - -

Code multipath by satellite elevation > 15°: 
Elevation MP1 MP2 MP5 MP5b MP5a+b
85 - 90 0.10 m
0.09 m
- - -
80 - 85 0.08 m
0.10 m
- - -
75 - 80 0.08 m
0.13 m
- - -
70 - 75 0.08 m
0.13 m
- - -
65 - 70 0.09 m
0.16 m
- - -
60 - 65 0.10 m
0.15 m
- - -
55 - 60 0.10 m
0.16 m
- - -
50 - 55 0.12 m
0.18 m
- - -
45 - 50 0.12 m
0.19 m
- - -
40 - 45 0.13 m
0.20 m
- - -
35 - 40 0.15 m
0.22 m
- - -
30 - 35 0.18 m
0.26 m
- - -
25 - 30 0.22 m
0.33 m
- - -
20 - 25 0.27 m
0.43 m
- - -
15 - 20 0.29 m
0.45 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 R5 starting 2013/10/13 12:54:00.00.

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 1.7 seconds to process this file 
-  This file was processed using version 4.2.0.10