Leica SpiderQC v4.2 Quality Report


Program Run: 2014/04/05 00:08:13.27

File Details:


Observation File: hria0940.14o
GPS Navigation File: hria0940.14n
GLONASS Navigation File: hria0940.14g
Quality Testing:  Fail (See below for details) 

Station Details:


Marker Name/Number:  HRIA  31324M001   
Observer/Agency:       
Receiver #/Type/Vers:  495463  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):  5421588.361  -1300118.396  3088124.968 
Approx Position (plh):  29° 08' 42.80055" N  13° 29' 6.40557" W  319.874m 
Diff. Est-Header:  6.0 m dX  -8.9 m dY  9.7 m dZ 
Diff. Est-Header:  14.5 m (2880 estimates) 

Session Summary:


Time of first obs:  2014/04/04 00:00:00.00 GPS 
Time of last obs:  2014/04/04 23:59:30.00 GPS 
Session length:  23.99 hours 
GPS week:  1786, day 5 
Observation interval:  30.00 seconds 
UTC leap seconds:  16 seconds 

Num SVs with obs:  53 
Num SVs with nav:  55 
Total GPS orbits:  184 
Total GLONASS orbits:  384 
Total Galileo orbits:  0 
SVs with obs:  G1 G2 G3 G4 G5 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 R19 R20 R21 R22 R23 R24  
SVs without obs:  G6 G30 R18 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:  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 51 slips, Threshold 43 slips 
Multipath:  Pass  Value 0.20m MP1 / 0.28m MP2, Threshold 0.5 m 
Data Completeness:  Pass  Value 99.6 %, Threshold 95.0 % 
Navigation Data:  Pass   
     
GLONASS Specific Tests 
Cycle Slips:  Pass  Value 39 slips, Threshold 100 slips 
Multipath:  Pass  Value 0.20m MP1 / 0.31m MP2, Threshold 0.5 m 
Data Completeness:  Pass  Value 98.4 %, Threshold 90.0 % 
Navigation Data:  Pass   

General Quality Indicators:


Tracking   
Num obs > 0°:  43101 
Num possible obs > 0°:  51202 
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°:  24362 
Num obs GLONASS > 0°:  18739 
Num obs Galileo > 0°:  0 
Num obs All > 0°:  43101 

Epochs with < 5 SV > 15°:  0  (0.0 %) 
Epochs with all SV > 15°:  2853  (99.1 %) 
Epochs with full data > 15°:  2564  (89.0 %) 

Satellite Geometry 
DOP  Minimum  Maximum  Average 
PDOP  2.6  5.8  3.6 
GDOP  3.1  7.0  4.3 

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:  0.000127 ms (at 2014/04/04 15:13:00.00) 
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°:  38091  21494  16597  - 
% obs > 15°:   99.9 %  100.0 %  99.9 %  - 
Num possible obs > 15°:  38119  21503  16616  - 
Num complete obs > 15°:  37765  21421  16344  - 
% complete obs > 15°:   99.1 %  99.6 %  98.4 %  - 
Average # SV per Epoch:  13.2   7.5   5.8   - 
         
Obs L2 : Obs L1:  0.993   0.998   0.986   - 
Obs L5 : Obs L1:  -  -  -  - 

Cycle Slips         
Num cycle slips > 15°:  90  51  39  - 
% slips per complete obs:  0.238 %  0.238 %  0.239 %  - 
Num complete obs per slip:  41961   42002   41908   - 
IOD Slips > 15°:  319  65  254  - 
Outliers > 15°:  -  -  -  - 
LLI L1 : Obs L1:  -  -  -  - 
LLI L2 : Obs L2:  0.0005   0.0008   -  - 
LLI L5 : Obs L5:  -  -  -  - 

Multipath         
MP1 RMS:  0.200 m  0.198 m  0.202 m  - 
MP2 RMS:  0.290 m  0.278 m  0.307 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 99.1 %
N/A N/A
L2P 99.5 %
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 15.01° 56.47° 846 846 (100.0 %)
0 (0.0 %) 2
G2 15.09° 61.42° 567 567 (100.0 %)
0 (0.0 %) 0
G3 15.01° 66.74° 793 793 (100.0 %)
0 (0.0 %) 1
G4 15.04° 84.59° 656 656 (100.0 %)
0 (0.0 %) 1
G5 15.08° 87.19° 694 694 (100.0 %)
0 (0.0 %) 0
G7 15.01° 55.96° 703 703 (100.0 %)
0 (0.0 %) 0
G8 15.01° 66.49° 582 582 (100.0 %)
0 (0.0 %) 0
G9 15.02° 76.59° 602 602 (100.0 %)
0 (0.0 %) 0
G10 15.04° 62.99° 813 813 (100.0 %)
0 (0.0 %) 0
G11 15.01° 62.14° 832 832 (100.0 %)
0 (0.0 %) 0
G12 15.00° 81.25° 700 700 (100.0 %)
0 (0.0 %) 0
G13 15.03° 82.01° 634 634 (100.0 %)
0 (0.0 %) 0
G14 15.05° 62.56° 565 565 (100.0 %)
0 (0.0 %) 2
G15 15.02° 72.82° 776 776 (100.0 %)
0 (0.0 %) 0
G16 15.07° 81.68° 714 713 (99.9 %)
0 (0.0 %) 9
G17 15.00° 58.74° 603 603 (100.0 %)
0 (0.0 %) 0
G18 15.04° 41.56° 810 809 (99.9 %)
0 (0.0 %) 5
G19 15.09° 63.51° 821 821 (100.0 %)
0 (0.0 %) 0
G20 15.02° 76.98° 747 747 (100.0 %)
0 (0.0 %) 0
G21 15.01° 59.14° 583 583 (100.0 %)
0 (0.0 %) 0
G22 15.06° 43.06° 804 804 (100.0 %)
0 (0.0 %) 12
G23 15.01° 68.73° 604 604 (100.0 %)
0 (0.0 %) 0
G24 15.01° 57.87° 843 843 (100.0 %)
0 (0.0 %) 0
G25 15.07° 64.16° 807 806 (99.9 %)
0 (0.0 %) 1
G26 15.02° 55.33° 820 820 (100.0 %)
0 (0.0 %) 0
G27 15.03° 56.95° 854 854 (100.0 %)
0 (0.0 %) 0
G28 15.02° 36.72° 822 822 (100.0 %)
0 (0.0 %) 0
G29 15.02° 81.62° 638 638 (100.0 %)
0 (0.0 %) 0
G31 15.04° 81.15° 641 640 (99.8 %)
0 (0.0 %) 7
G32 15.06° 79.23° 629 624 (99.2 %)
0 (0.0 %) 11
R1 15.01° 53.87° 732 732 (100.0 %)
0 (0.0 %) 0
R2 15.03° 75.37° 603 603 (100.0 %)
0 (0.0 %) 0
R3 15.09° 80.19° 622 622 (100.0 %)
0 (0.0 %) 2
R4 15.05° 55.93° 886 886 (100.0 %)
0 (0.0 %) 4
R5 15.01° 63.16° 873 871 (99.8 %)
0 (0.0 %) 3
R6 15.03° 88.22° 553 551 (99.6 %)
0 (0.0 %) 2
R7 15.03° 68.47° 637 637 (100.0 %)
0 (0.0 %) 2
R8 15.04° 48.17° 762 762 (100.0 %)
0 (0.0 %) 1
R9 15.08° 81.14° 867 865 (99.8 %)
0 (0.0 %) 5
R10 15.01° 58.29° 933 933 (100.0 %)
0 (0.0 %) 1
R11 15.00° 62.92° 625 625 (100.0 %)
0 (0.0 %) 0
R12 15.15° 87.27° 546 544 (99.6 %)
0 (0.0 %) 7
R13 15.00° 67.50° 632 632 (100.0 %)
0 (0.0 %) 0
R14 15.05° 46.95° 759 759 (100.0 %)
0 (0.0 %) 0
R15 15.04° 51.86° 735 731 (99.5 %)
0 (0.0 %) 2
R16 15.07° 75.26° 683 676 (99.0 %)
0 (0.0 %) 7
R17 15.02° 62.16° 583 583 (100.0 %)
0 (0.0 %) 0
R19 15.13° 66.75° 989 989 (100.0 %)
0 (0.0 %) 1
R20 15.04° 53.75° 1025 1025 (100.0 %)
0 (0.0 %) 0
R21 15.03° 74.58° 683 683 (100.0 %)
0 (0.0 %) 0
R22 15.10° 82.26° 535 535 (100.0 %)
0 (0.0 %) 1
R23 15.05° 57.30° 640 640 (100.0 %)
0 (0.0 %) 1
R24 15.01° 39.11° 713 713 (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 2.1 %
0.0 %
0.0 %
G4 1.7 %
0.0 %
0.0 %
G5 1.8 %
0.0 %
0.0 %
G7 1.8 %
0.0 %
0.0 %
G8 1.5 %
0.0 %
0.0 %
G9 1.6 %
0.0 %
0.0 %
G10 2.1 %
0.0 %
0.0 %
G11 2.2 %
0.0 %
0.0 %
G12 1.8 %
0.0 %
0.0 %
G13 1.7 %
0.0 %
0.0 %
G14 1.5 %
0.5 %
0.9 %
G15 2.0 %
0.0 %
0.0 %
G16 1.9 %
0.6 %
1.1 %
G17 1.6 %
0.0 %
0.0 %
G18 2.1 %
0.5 %
0.9 %
G19 2.2 %
0.0 %
0.0 %
G20 2.0 %
0.3 %
1.1 %
G21 1.5 %
0.0 %
0.0 %
G22 2.1 %
0.5 %
0.5 %
G23 1.6 %
0.0 %
0.0 %
G24 2.2 %
0.0 %
0.0 %
G25 2.1 %
0.0 %
0.0 %
G26 2.2 %
0.0 %
0.0 %
G27 2.2 %
0.0 %
0.0 %
G28 2.2 %
0.0 %
0.0 %
G29 1.7 %
0.0 %
0.0 %
G31 1.7 %
0.2 %
1.9 %
G32 1.6 %
2.2 %
4.6 %
R1 1.9 %
0.0 %
0.0 %
R2 1.6 %
0.0 %
0.0 %
R3 1.6 %
0.0 %
0.0 %
R4 2.3 %
0.0 %
0.1 %
R5 2.3 %
0.5 %
4.2 %
R6 1.4 %
0.0 %
4.5 %
R7 1.7 %
0.0 %
0.2 %
R8 2.0 %
0.0 %
0.0 %
R9 2.3 %
0.1 %
3.0 %
R10 2.4 %
0.0 %
0.0 %
R11 1.6 %
0.0 %
0.0 %
R12 1.4 %
0.0 %
0.0 %
R13 1.7 %
0.0 %
0.0 %
R14 2.0 %
0.0 %
0.0 %
R15 1.9 %
0.7 %
7.1 %
R16 1.8 %
1.0 %
16.4 %
R17 1.5 %
0.0 %
0.0 %
R19 2.6 %
0.0 %
0.0 %
R20 2.7 %
0.0 %
0.0 %
R21 1.8 %
0.0 %
0.0 %
R22 1.4 %
0.0 %
0.0 %
R23 1.7 %
0.0 %
0.0 %
R24 1.9 %
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 %
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 %
0.9 %
G15 0.0 %
0.0 %
G16 0.0 %
0.7 %
G17 0.0 %
0.0 %
G18 0.0 %
0.6 %
G19 0.0 %
0.0 %
G20 0.0 %
0.8 %
G21 0.0 %
0.0 %
G22 0.0 %
0.1 %
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 %
1.9 %
G32 0.0 %
3.7 %
R1 0.0 %
0.0 %
R2 0.0 %
0.0 %
R3 0.0 %
0.0 %
R4 0.0 %
0.0 %
R5 0.0 %
2.5 %
R6 0.0 %
2.9 %
R7 0.0 %
0.2 %
R8 0.0 %
0.0 %
R9 0.0 %
1.5 %
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 %
3.3 %
R16 0.0 %
10.1 %
R17 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
0.2 %
80 - 85 0
0
0
1.2 %
75 - 80 0
0
0
2.1 %
70 - 75 1
0
0
2.6 %
65 - 70 2
0
0
3.5 %
60 - 65 0
1
0
5.8 %
55 - 60 2
1
0
7.8 %
50 - 55 2
1
0
8.5 %
45 - 50 1
0
0
8.5 %
40 - 45 6
5
0
8.9 %
35 - 40 0
2
0
9.7 %
30 - 35 8
3
0
9.9 %
25 - 30 8
7
0
9.6 %
20 - 25 7
10
0
10.2 %
15 - 20 14
9
0
11.4 %
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 8.5
7.3
- - -
G2 8.5
7.2
- - -
G3 8.6
7.0
- - -
G4 8.5
6.9
- - -
G5 8.6
7.7
- - -
G7 8.3
6.8
- - -
G8 8.5
6.8
- - -
G9 8.6
7.1
- - -
G10 8.5
7.0
- - -
G11 8.6
6.8
- - -
G12 8.6
7.5
- - -
G13 8.5
6.7
- - -
G14 8.3
6.7
- - -
G15 8.6
7.5
- - -
G16 8.5
6.9
- - -
G17 8.5
7.2
- - -
G18 8.0
5.4
- - -
G19 8.5
7.5
- - -
G20 8.5
7.0
- - -
G21 8.1
6.2
- - -
G22 8.1
6.3
- - -
G23 8.7
6.9
- - -
G24 8.4
7.4
- - -
G25 8.4
7.2
- - -
G26 8.5
7.0
- - -
G27 8.6
7.5
- - -
G28 7.9
5.6
- - -
G29 8.6
7.6
- - -
G31 8.6
7.6
- - -
G32 8.5
7.0
- - -
R1 7.9
5.8
- - -
R2 8.3
7.6
- - -
R3 7.5
7.5
- - -
R4 7.9
7.3
- - -
R5 8.0
7.4
- - -
R6 8.4
7.6
- - -
R7 8.2
7.6
- - -
R8 8.0
7.5
- - -
R9 6.8
4.8
- - -
R10 8.0
5.9
- - -
R11 7.4
5.6
- - -
R12 7.1
7.0
- - -
R13 7.4
7.6
- - -
R14 6.6
5.7
- - -
R15 7.4
7.4
- - -
R16 7.6
7.4
- - -
R17 8.1
7.5
- - -
R19 8.2
7.7
- - -
R20 6.7
7.8
- - -
R21 7.5
5.9
- - -
R22 8.4
7.7
- - -
R23 8.0
7.3
- - -
R24 7.8
7.4
- - -
Average GPS: 8.4
7.0
- - -
Average GLONASS: 7.7
7.0
- - -
Average Galileo: - - - - -
Average All: 8.1
7.0
- - -

Code multipath by satellite > 15°: 
SV Av Elev MP1 MP2 MP5 MP5b MP5a+b
G1 35.7 ° 0.20 m
0.28 m
- - -
G2 38.3 ° 0.19 m
0.22 m
- - -
G3 40.9 ° 0.19 m
0.20 m
- - -
G4 49.8 ° 0.17 m
0.17 m
- - -
G5 51.1 ° 0.16 m
0.27 m
- - -
G7 35.5 ° 0.21 m
0.35 m
- - -
G8 40.7 ° 0.19 m
0.32 m
- - -
G9 45.8 ° 0.19 m
0.33 m
- - -
G10 39.0 ° 0.17 m
0.26 m
- - -
G11 38.6 ° 0.19 m
0.30 m
- - -
G12 48.1 ° 0.23 m
0.29 m
- - -
G13 48.5 ° 0.21 m
0.30 m
- - -
G14 38.8 ° 0.19 m
0.21 m
- - -
G15 43.9 ° 0.19 m
0.30 m
- - -
G16 48.4 ° 0.15 m
0.20 m
- - -
G17 36.9 ° 0.22 m
0.25 m
- - -
G18 28.3 ° 0.25 m
0.40 m
- - -
G19 39.3 ° 0.20 m
0.24 m
- - -
G20 46.0 ° 0.21 m
0.26 m
- - -
G21 37.1 ° 0.22 m
0.28 m
- - -
G22 29.1 ° 0.27 m
0.33 m
- - -
G23 41.9 ° 0.19 m
0.31 m
- - -
G24 36.4 ° 0.18 m
0.30 m
- - -
G25 39.6 ° 0.20 m
0.25 m
- - -
G26 35.2 ° 0.20 m
0.37 m
- - -
G27 36.0 ° 0.17 m
0.24 m
- - -
G28 25.9 ° 0.25 m
0.34 m
- - -
G29 48.3 ° 0.21 m
0.29 m
- - -
G31 48.1 ° 0.18 m
0.20 m
- - -
G32 47.1 ° 0.17 m
0.27 m
- - -
R1 34.4 ° 0.20 m
0.35 m
- - -
R2 45.2 ° 0.16 m
0.29 m
- - -
R3 47.6 ° 0.21 m
0.29 m
- - -
R4 35.5 ° 0.31 m
0.37 m
- - -
R5 39.1 ° 0.21 m
0.32 m
- - -
R6 51.6 ° 0.15 m
0.27 m
- - -
R7 41.8 ° 0.19 m
0.28 m
- - -
R8 31.6 ° 0.22 m
0.30 m
- - -
R9 48.1 ° 0.21 m
0.31 m
- - -
R10 36.7 ° 0.20 m
0.29 m
- - -
R11 39.0 ° 0.22 m
0.35 m
- - -
R12 51.2 ° 0.15 m
0.22 m
- - -
R13 41.3 ° 0.19 m
0.37 m
- - -
R14 31.0 ° 0.20 m
0.38 m
- - -
R15 33.4 ° 0.16 m
0.27 m
- - -
R16 45.2 ° 0.16 m
0.27 m
- - -
R17 38.6 ° 0.23 m
0.34 m
- - -
R19 40.9 ° 0.20 m
0.29 m
- - -
R20 34.4 ° 0.19 m
0.33 m
- - -
R21 44.8 ° 0.18 m
0.23 m
- - -
R22 48.7 ° 0.18 m
0.21 m
- - -
R23 36.2 ° 0.26 m
0.36 m
- - -
R24 27.1 ° 0.25 m
0.38 m
- - -
Average GPS: - 0.20 m
0.28 m
- - -
Average GLONASS: - 0.20 m
0.31 m
- - -
Average Galileo: - - - - - -
Average All: - 0.20 m
0.29 m
- - -

Code multipath by satellite elevation > 15°: 
Elevation MP1 MP2 MP5 MP5b MP5a+b
85 - 90 0.10 m
0.15 m
- - -
80 - 85 0.17 m
0.14 m
- - -
75 - 80 0.13 m
0.17 m
- - -
70 - 75 0.12 m
0.19 m
- - -
65 - 70 0.12 m
0.20 m
- - -
60 - 65 0.12 m
0.19 m
- - -
55 - 60 0.12 m
0.20 m
- - -
50 - 55 0.13 m
0.22 m
- - -
45 - 50 0.15 m
0.25 m
- - -
40 - 45 0.16 m
0.24 m
- - -
35 - 40 0.21 m
0.31 m
- - -
30 - 35 0.24 m
0.32 m
- - -
25 - 30 0.28 m
0.38 m
- - -
20 - 25 0.32 m
0.44 m
- - -
15 - 20 0.32 m
0.45 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 1.7 seconds to process this file 
-  This file was processed using version 4.2.0.10