Leica SpiderQC v4.4 Quality Report


Program Run: 2015/11/12 00:00:46.73

File Details:


Observation File: graf3150.15o
GPS Navigation File: graf3150.15n
GLONASS Navigation File: graf3150.15g
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:  2.1 m dX  -6.9 m dY  5.3 m dZ 
Diff. Est-Header:  8.9 m (2880 estimates) 

Session Summary:


Time of first obs:  2015/11/11 00:00:00.00 GPS 
Time of last obs:  2015/11/11 23:59:30.00 GPS 
Session length:  23.99 hours 
GPS week:  1870, day 3 
Observation interval:  30.00 seconds 
UTC leap seconds:  17 seconds 

Num SVs with obs:  53 
Num SVs with nav:  55 
Total GPS orbits:  174 
Total GLONASS orbits:  373 
Total Galileo orbits:  0 
SVs with obs:  G1 G2 G3 G5 G6 G7 G8 G9 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 R18 R19 R20 R21 R22 R23 R24  
SVs without obs:  G4 G10 R17 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 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:  G10  
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 12 slips, Threshold 43 slips 
Multipath:  Pass  Value 0.40m MP1 / 0.43m MP2, Threshold 0.5 m 
Data Completeness:  Pass  Value 100.0 %, Threshold 95.0 % 
Navigation Data:  Pass   
     
GLONASS Specific Tests 
Cycle Slips:  Pass  Value 20 slips, Threshold 100 slips 
Multipath:  Fail  Value 0.39m MP1 / 0.54m MP2, Threshold 0.5 m 
Data Completeness:  Pass  Value 99.9 %, Threshold 90.0 % 
Navigation Data:  Pass   

General Quality Indicators:


Tracking   
Num obs > 0°:  42697 
Num possible obs > 0°:  50870 
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°:  23921 
Num obs GLONASS > 0°:  18776 
Num obs Galileo > 0°:  0 
Num obs All > 0°:  42697 

Epochs with < 5 SV > 15°:  0  (0.0 %) 
Epochs with all SV > 15°:  2880  (100.0 %) 
Epochs with full data > 15°:  2859  (99.3 %) 

Satellite Geometry 
DOP  Minimum  Maximum  Average 
PDOP  2.6  5.8  3.4 
GDOP  3.2  7.0  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:  0.000048 ms (at 2015/11/11 13:54:30.00) 
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°:  38199  21469  16730  - 
% obs > 15°:   100.0 %  100.0 %  100.0 %  - 
Num possible obs > 15°:  38199  21469  16730  - 
Num complete obs > 15°:  38178  21469  16709  - 
% complete obs > 15°:   99.9 %  100.0 %  99.9 %  - 
Average # SV per Epoch:  13.3   7.5   5.8   - 
         
Obs L2 : Obs L1:  0.999   1.000   0.999   - 
Obs L5 : Obs L1:  -  -  -  - 

Cycle Slips         
Num cycle slips > 15°:  32  12  20  - 
% slips per complete obs:  0.084 %  0.056 %  0.120 %  - 
Num complete obs per slip:  119306   178908   83545   - 
IOD Slips > 15°:  24  -  24  - 
Outliers > 15°:  -  -  -  - 
LLI L1 : Obs L1:  -  -  -  - 
LLI L2 : Obs L2:  -  -  -  - 
LLI L5 : Obs L5:  -  -  -  - 

Multipath         
MP1 RMS:  0.396 m  0.403 m  0.388 m  - 
MP2 RMS:  0.478 m  0.434 m  0.536 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 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 15.07° 55.81° 848 848 (100.0 %)
0 (0.0 %) 0
G2 15.08° 65.27° 587 587 (100.0 %)
0 (0.0 %) 2
G3 15.04° 81.01° 719 719 (100.0 %)
0 (0.0 %) 1
G5 15.09° 82.24° 718 718 (100.0 %)
0 (0.0 %) 1
G6 15.11° 86.92° 660 660 (100.0 %)
0 (0.0 %) 0
G7 15.02° 53.14° 732 732 (100.0 %)
0 (0.0 %) 0
G8 15.01° 65.91° 810 810 (100.0 %)
0 (0.0 %) 1
G9 15.11° 86.38° 660 660 (100.0 %)
0 (0.0 %) 0
G11 15.13° 61.51° 823 823 (100.0 %)
0 (0.0 %) 0
G12 15.02° 86.12° 680 680 (100.0 %)
0 (0.0 %) 0
G13 15.02° 54.65° 849 849 (100.0 %)
0 (0.0 %) 0
G14 15.16° 65.03° 586 586 (100.0 %)
0 (0.0 %) 1
G15 15.05° 71.60° 791 791 (100.0 %)
0 (0.0 %) 0
G16 15.01° 75.07° 739 739 (100.0 %)
0 (0.0 %) 0
G17 15.00° 63.40° 569 569 (100.0 %)
0 (0.0 %) 1
G18 15.02° 41.84° 809 809 (100.0 %)
0 (0.0 %) 1
G19 15.09° 88.53° 676 676 (100.0 %)
0 (0.0 %) 0
G20 15.14° 69.79° 606 606 (100.0 %)
0 (0.0 %) 2
G21 15.02° 58.72° 580 580 (100.0 %)
0 (0.0 %) 0
G22 15.00° 43.70° 801 801 (100.0 %)
0 (0.0 %) 0
G23 15.02° 66.96° 601 601 (100.0 %)
0 (0.0 %) 0
G24 15.02° 57.49° 855 855 (100.0 %)
0 (0.0 %) 0
G25 15.01° 66.89° 798 798 (100.0 %)
0 (0.0 %) 0
G26 15.03° 67.16° 801 801 (100.0 %)
0 (0.0 %) 1
G27 15.15° 55.29° 850 850 (100.0 %)
0 (0.0 %) 0
G28 15.01° 35.97° 822 822 (100.0 %)
0 (0.0 %) 0
G29 15.14° 79.35° 625 625 (100.0 %)
0 (0.0 %) 0
G30 15.07° 65.97° 585 585 (100.0 %)
0 (0.0 %) 0
G31 15.10° 87.77° 669 669 (100.0 %)
0 (0.0 %) 1
G32 15.07° 77.70° 620 620 (100.0 %)
0 (0.0 %) 0
R1 15.07° 59.19° 615 615 (100.0 %)
0 (0.0 %) 0
R2 15.03° 84.34° 541 541 (100.0 %)
0 (0.0 %) 0
R3 15.09° 71.35° 621 621 (100.0 %)
0 (0.0 %) 0
R4 15.07° 49.30° 757 757 (100.0 %)
0 (0.0 %) 0
R5 15.06° 50.86° 749 749 (100.0 %)
0 (0.0 %) 1
R6 15.00° 73.84° 723 723 (100.0 %)
0 (0.0 %) 2
R7 15.02° 83.07° 837 837 (100.0 %)
0 (0.0 %) 1
R8 15.11° 59.18° 932 932 (100.0 %)
0 (0.0 %) 0
R9 15.02° 70.88° 972 972 (100.0 %)
0 (0.0 %) 11
R10 15.15° 49.30° 1031 1031 (100.0 %)
0 (0.0 %) 1
R11 15.01° 71.28° 698 698 (100.0 %)
0 (0.0 %) 0
R12 15.01° 83.65° 534 534 (100.0 %)
0 (0.0 %) 3
R13 15.05° 58.79° 625 625 (100.0 %)
0 (0.0 %) 0
R14 15.08° 39.07° 712 712 (100.0 %)
0 (0.0 %) 0
R15 15.00° 58.41° 635 635 (100.0 %)
0 (0.0 %) 0
R16 15.01° 85.98° 627 627 (100.0 %)
0 (0.0 %) 0
R18 15.00° 85.88° 615 615 (100.0 %)
0 (0.0 %) 0
R19 15.03° 60.86° 852 852 (100.0 %)
0 (0.0 %) 0
R20 15.02° 59.31° 843 843 (100.0 %)
0 (0.0 %) 0
R21 15.03° 82.88° 694 694 (100.0 %)
0 (0.0 %) 0
R22 15.12° 72.57° 606 606 (100.0 %)
0 (0.0 %) 1
R23 15.00° 49.43° 753 753 (100.0 %)
0 (0.0 %) 0
R24 15.01° 48.26° 758 758 (100.0 %)
0 (0.0 %) 0

Missing phase observations by satellite > 15°: 
SV Observations Missing L1 Missing L2
G1 2.2 %
0.0 %
0.0 %
G2 1.5 %
0.0 %
0.0 %
G3 1.9 %
0.0 %
0.0 %
G5 1.9 %
0.0 %
0.0 %
G6 1.7 %
0.0 %
0.0 %
G7 1.9 %
0.0 %
0.0 %
G8 2.1 %
0.0 %
0.0 %
G9 1.7 %
0.0 %
0.0 %
G11 2.2 %
0.0 %
0.0 %
G12 1.8 %
0.0 %
0.0 %
G13 2.2 %
0.0 %
0.0 %
G14 1.5 %
0.0 %
0.0 %
G15 2.1 %
0.0 %
0.0 %
G16 1.9 %
0.0 %
0.0 %
G17 1.5 %
0.0 %
0.0 %
G18 2.1 %
0.0 %
0.0 %
G19 1.8 %
0.0 %
0.0 %
G20 1.6 %
0.0 %
0.0 %
G21 1.5 %
0.0 %
0.0 %
G22 2.1 %
0.0 %
0.0 %
G23 1.6 %
0.0 %
0.0 %
G24 2.2 %
0.0 %
0.0 %
G25 2.1 %
0.0 %
0.0 %
G26 2.1 %
0.0 %
0.0 %
G27 2.2 %
0.0 %
0.0 %
G28 2.2 %
0.0 %
0.0 %
G29 1.6 %
0.0 %
0.0 %
G30 1.5 %
0.0 %
0.0 %
G31 1.8 %
0.0 %
0.0 %
G32 1.6 %
0.0 %
0.0 %
R1 1.6 %
0.0 %
0.0 %
R2 1.4 %
0.0 %
0.0 %
R3 1.6 %
0.0 %
0.0 %
R4 2.0 %
0.0 %
0.0 %
R5 2.0 %
0.0 %
0.0 %
R6 1.9 %
0.1 %
1.7 %
R7 2.2 %
0.0 %
0.0 %
R8 2.4 %
0.0 %
0.0 %
R9 2.5 %
0.0 %
0.9 %
R10 2.7 %
0.0 %
0.0 %
R11 1.8 %
0.0 %
0.0 %
R12 1.4 %
0.0 %
0.0 %
R13 1.6 %
0.0 %
0.0 %
R14 1.9 %
0.0 %
0.0 %
R15 1.7 %
0.0 %
0.0 %
R16 1.6 %
0.0 %
0.0 %
R18 1.6 %
0.0 %
0.0 %
R19 2.2 %
0.0 %
0.0 %
R20 2.2 %
0.0 %
0.0 %
R21 1.8 %
0.0 %
0.0 %
R22 1.6 %
0.0 %
0.0 %
R23 2.0 %
0.0 %
0.0 %
R24 2.0 %
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 %
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 %
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 %
0.0 %
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 %
1.5 %
R7 0.0 %
0.0 %
R8 0.0 %
0.0 %
R9 0.0 %
0.8 %
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 %
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
1.5 %
75 - 80 0
0
0
1.8 %
70 - 75 0
0
0
2.8 %
65 - 70 0
0
0
4.1 %
60 - 65 0
0
0
5.0 %
55 - 60 0
0
0
7.1 %
50 - 55 0
0
0
7.9 %
45 - 50 3
1
0
9.3 %
40 - 45 2
2
0
8.5 %
35 - 40 2
1
0
10.0 %
30 - 35 0
0
0
9.8 %
25 - 30 4
3
0
9.4 %
20 - 25 0
7
0
10.0 %
15 - 20 1
6
0
12.3 %
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 8.1
7.0
- - -
G2 8.4
7.0
- - -
G3 8.3
7.2
- - -
G5 8.4
7.4
- - -
G6 8.3
7.3
- - -
G7 7.8
6.3
- - -
G8 8.2
6.9
- - -
G9 8.3
7.3
- - -
G11 8.4
6.3
- - -
G12 8.5
7.3
- - -
G13 8.4
6.2
- - -
G14 8.0
6.4
- - -
G15 8.4
7.2
- - -
G16 8.4
6.5
- - -
G17 8.4
7.1
- - -
G18 7.6
5.1
- - -
G19 8.3
7.2
- - -
G20 8.3
6.8
- - -
G21 7.6
6.0
- - -
G22 7.8
6.0
- - -
G23 8.4
6.4
- - -
G24 8.1
7.3
- - -
G25 8.1
7.0
- - -
G26 8.2
7.1
- - -
G27 8.4
7.4
- - -
G28 7.7
5.2
- - -
G29 8.3
7.5
- - -
G30 8.3
7.1
- - -
G31 8.5
7.3
- - -
G32 8.3
6.7
- - -
R1 7.2
5.3
- - -
R2 7.7
7.4
- - -
R3 7.4
7.4
- - -
R4 7.5
7.1
- - -
R5 6.3
7.2
- - -
R6 7.8
5.6
- - -
R7 7.5
7.3
- - -
R8 7.3
6.8
- - -
R9 6.2
4.3
- - -
R10 7.8
5.8
- - -
R11 7.2
5.4
- - -
R12 6.6
6.7
- - -
R13 5.7
7.0
- - -
R14 5.7
5.1
- - -
R15 6.9
6.9
- - -
R16 7.2
7.0
- - -
R18 7.7
7.4
- - -
R19 7.5
7.0
- - -
R20 6.0
7.2
- - -
R21 7.5
7.0
- - -
R22 7.9
7.6
- - -
R23 7.6
5.3
- - -
R24 6.3
5.5
- - -
Average GPS: 8.2
6.8
- - -
Average GLONASS: 7.1
6.5
- - -
Average Galileo: - - - - -
Average All: 7.7
6.7
- - -

Code multipath by satellite > 15°: 
SV Av Elev MP1 MP2 MP5 MP5b MP5a+b
G1 35.4 ° 0.39 m
0.44 m
- - -
G2 40.2 ° 0.46 m
0.50 m
- - -
G3 48.0 ° 0.47 m
0.39 m
- - -
G5 48.7 ° 0.36 m
0.40 m
- - -
G6 51.0 ° 0.38 m
0.47 m
- - -
G7 34.1 ° 0.45 m
0.42 m
- - -
G8 40.5 ° 0.34 m
0.32 m
- - -
G9 50.7 ° 0.43 m
0.39 m
- - -
G11 38.3 ° 0.38 m
0.42 m
- - -
G12 50.6 ° 0.47 m
0.50 m
- - -
G13 34.8 ° 0.38 m
0.45 m
- - -
G14 40.1 ° 0.44 m
0.47 m
- - -
G15 43.3 ° 0.33 m
0.36 m
- - -
G16 45.0 ° 0.40 m
0.44 m
- - -
G17 39.2 ° 0.42 m
0.42 m
- - -
G18 28.4 ° 0.48 m
0.49 m
- - -
G19 51.8 ° 0.37 m
0.45 m
- - -
G20 42.5 ° 0.44 m
0.48 m
- - -
G21 36.9 ° 0.42 m
0.40 m
- - -
G22 29.4 ° 0.43 m
0.44 m
- - -
G23 41.0 ° 0.42 m
0.45 m
- - -
G24 36.3 ° 0.37 m
0.42 m
- - -
G25 40.9 ° 0.42 m
0.43 m
- - -
G26 41.1 ° 0.33 m
0.35 m
- - -
G27 35.2 ° 0.39 m
0.41 m
- - -
G28 25.5 ° 0.46 m
0.49 m
- - -
G29 47.2 ° 0.37 m
0.47 m
- - -
G30 40.5 ° 0.36 m
0.40 m
- - -
G31 51.4 ° 0.38 m
0.47 m
- - -
G32 46.4 ° 0.40 m
0.48 m
- - -
R1 37.1 ° 0.42 m
0.57 m
- - -
R2 49.7 ° 0.38 m
0.62 m
- - -
R3 43.2 ° 0.47 m
0.59 m
- - -
R4 32.2 ° 0.40 m
0.56 m
- - -
R5 33.0 ° 0.33 m
0.44 m
- - -
R6 44.4 ° 0.30 m
0.42 m
- - -
R7 49.0 ° 0.45 m
0.47 m
- - -
R8 37.1 ° 0.44 m
0.53 m
- - -
R9 43.0 ° 0.38 m
0.55 m
- - -
R10 32.2 ° 0.34 m
0.56 m
- - -
R11 43.1 ° 0.35 m
0.47 m
- - -
R12 49.3 ° 0.33 m
0.48 m
- - -
R13 36.9 ° 0.41 m
0.49 m
- - -
R14 27.1 ° 0.42 m
0.59 m
- - -
R15 36.7 ° 0.36 m
0.68 m
- - -
R16 50.5 ° 0.39 m
0.61 m
- - -
R18 50.4 ° 0.35 m
0.53 m
- - -
R19 37.9 ° 0.42 m
0.56 m
- - -
R20 37.2 ° 0.40 m
0.60 m
- - -
R21 49.0 ° 0.45 m
0.57 m
- - -
R22 43.8 ° 0.41 m
0.48 m
- - -
R23 32.2 ° 0.36 m
0.53 m
- - -
R24 31.6 ° 0.35 m
0.43 m
- - -
Average GPS: - 0.40 m
0.43 m
- - -
Average GLONASS: - 0.39 m
0.54 m
- - -
Average Galileo: - - - - - -
Average All: - 0.40 m
0.48 m
- - -

Code multipath by satellite elevation > 15°: 
Elevation MP1 MP2 MP5 MP5b MP5a+b
85 - 90 0.19 m
0.22 m
- - -
80 - 85 0.23 m
0.28 m
- - -
75 - 80 0.22 m
0.27 m
- - -
70 - 75 0.23 m
0.27 m
- - -
65 - 70 0.25 m
0.31 m
- - -
60 - 65 0.27 m
0.33 m
- - -
55 - 60 0.28 m
0.34 m
- - -
50 - 55 0.32 m
0.36 m
- - -
45 - 50 0.35 m
0.43 m
- - -
40 - 45 0.42 m
0.46 m
- - -
35 - 40 0.41 m
0.53 m
- - -
30 - 35 0.45 m
0.55 m
- - -
25 - 30 0.47 m
0.57 m
- - -
20 - 25 0.52 m
0.60 m
- - -
15 - 20 0.52 m
0.65 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 1.3 seconds to process this file 
-  This file was processed using version 4.4.0.1