Leica SpiderQC v7.5 Quality Report


Program Run: 2021/11/05 20:01:43.88

File Details:


Observation File: algc309t.21o
GPS Navigation File: algc309t.21n
GLONASS Navigation File: algc309t.21g
Galileo Navigation File: algc309t.21l
BeiDou Navigation File: algc309t.21f
Quality Testing:  Fail (See below for details) 

Station Details:


Marker Name/Number:  ALGC  13456M001   
Observer/Agency:  IECA  Junta de Andalucia   
Receiver #/Type/Vers:  1832466  LEICA GR50  4.31/7.403 
Antenna #/Type:  2110213  LEIAR20 LEIM   
Antenna Offsets (HEN):  0.000  0.000  0.000 
Approx Position (XYZ):  5135570.619  -489449.771  3738221.713 
Approx Position (plh):  36° 06' 39.74829" N  5° 26' 39.03897" W  117.170m 
Diff. Est-Header:  0.1 m dX  -3.2 m dY  2.3 m dZ 
Diff. Est-Header:  3.9 m (3600 estimates) 

Session Summary:


Time of first obs:  2021/11/05 19:00:00.00 GPS 
Time of last obs:  2021/11/05 19:59:59.00 GPS 
Session length:  59.98 minutes 
GPS week:  2182, day 5 
Observation interval:  1.00 seconds 
UTC leap seconds:  18 seconds 

Num SVs with obs:  39 
Num SVs with nav:  101 
Total GPS orbits:  36 
Total GLONASS orbits:  39 
Total Galileo orbits:  117 
Total BeiDou orbits:  31 
Total QZSS orbits: 
Total NavIC orbits: 
SVs with obs:  G2 G6 G10 G12 G13 G15 G19 G23 G24 G25 G29 G31 G32 R1 R6 R7 R8 R9 R10 R16 R18 R20 R21 E2 E3 E5 E7 E8 E25 E30 E36 C5 C11 C12 C13 C20 C23 C25 C28  
SVs without obs:  G1 G3 G4 G5 G7 G8 G9 G11 G14 G16 G17 G18 G20 G21 G22 G26 G27 G28 G30 R2 R3 R4 R5 R11 R12 R13 R14 R15 R17 R19 R22 R23 R24 E1 E4 E6 E9 E10 E11 E12 E13 E14 E15 E16 E17 E18 E19 E20 E21 E22 E23 E24 E26 E27 E28 E29 E31 E32 E33 E34 E35 C1 C2 C3 C4 C6 C7 C8 C9 C10 C14 C15 C16 C17 C18 C19 C21 C22 C24 C26 C27 C29 C30 C31 C32 C33 C34 C35 C36 C37 J1 J2 J3 J4 J5 J6 J7 J8 J9 J10 I1 I2 I3 I4 I5 I6 I7  
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 R12 R13 R14 R15 R16 R17 R18 R19 R20 R21 R22 R23 R24 E1 E2 E3 E4 E5 E7 E8 E9 E11 E12 E13 E14 E15 E18 E19 E21 E24 E25 E26 E27 E30 E31 E33 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C16 C19 C20 C21 C22 C23 C24 C25 C26 C27 C28 C29 C30  
SVs without nav:  R11 E6 E10 E16 E17 E20 E22 E23 E28 E29 E32 E34 E35 E36 C1 C2 C3 C4 C15 C17 C18 C31 C32 C33 C34 C35 C36 C37  
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 0 slips, Threshold 45 slips 
Multipath:  Pass  Value 0.09m MP1 / 0.13m MP2 / 0.10m MP5, Threshold 0.5 m 
Data Completeness:  Pass  Value 100.0 %, Threshold 95.0 % 
Navigation Data:  Pass   
     
GLONASS Specific Tests 
Cycle Slips:  Pass  Value 3 slips, Threshold 112 slips 
Multipath:  Pass  Value 0.11m MP1 / 0.16m MP2, Threshold 0.5 m 
Data Completeness:  Fail  Value 89.9 %, Threshold 90.0 % 
Navigation Data:  Pass   
     
Galileo Specific Tests 
Cycle Slips:  Pass  Value 3 slips, Threshold 118 slips 
Multipath:  Pass  Value 0.08m MP1 / 0.12m MP5a / 0.12m MP5b / 0.04m MP5a+b, Threshold 0.5 m 
Data Completeness:  Pass  Value 100.0 %, Threshold 90.0 % 
Navigation Data:  Pass   
     
BeiDou Specific Tests 
Cycle Slips:  Pass  Value 0 slips, Threshold 91 slips 
Multipath:  Pass  Value 0.45m MP1 / 0.20m MP2b, Threshold 0.5 m 
Data Completeness:  Pass  Value 100.0 %, Threshold 90.0 % 
Navigation Data:  Pass   

General Quality Indicators:


Tracking   
Num obs > 0°:  112985 
Num possible obs > 0°:  118964 
Num obs with invalid nav: 
Num obs without nav:  3600 
Num obs to unhealthy SV: 
Num obs with WLF change: 
Num complete loss of lock: 

Epochs with < 5 SV > 15°:  (0.0 %) 
Epochs with all SV > 15°:  1500  (41.7 %) 
Epochs with full data > 15°:  1500  (41.7 %) 

Satellite Geometry 
DOP  Minimum  Maximum  Average 
PDOP  2.5  2.8  2.7 
GDOP  3.1  3.5  3.3 

Data Gaps 
Num epochs with data:  3600 
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 
R20  34.983  434 / 2533  15.00° / 29.36°  133.28° / 121.58° 
Total:  34.983 (2099 observations) 

Receiver Clock 
Clock Slips > 15°: 
Max RX clock offset:  0.000028 ms (at 2021/11/05 19:13:41.00) 
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  BeiDou  QZSS  NavIC 
Tracking information over 0° 
Num obs > 0°:  112985  39212  23840  26118  23815 
Num possible obs > 0°:  118964  40948  27558  23766  26692 
Num obs with invalid nav: 
Num obs without nav:  3600  3600 
Num obs to unhealthy SV: 
               
Tracking over Elevation Mask (15°) 
Num obs > 15°:  75899  22283  18748  19726  15142 
% obs > 15°:   97.3 %  100.0 %  89.9 %  100.0 %  100.0 % 
Num possible obs > 15°:  77999  22283  20848  19726  15142 
Num complete obs > 15°:  75899  22283  18748  19726  15142 
% complete obs > 15°:   97.3 %  100.0 %  89.9 %  100.0 %  100.0 % 
Num obs with WLF change:  
Average # SV per Epoch:  21.1   6.2   5.2   5.5   4.2  
               
Observation ratio w.r.t. L1/E1/B1I: 
Obs L2/B1C:  1.796   1.947   1.616  
Obs E5b/B2I:  0.727   1.000   0.372  
Obs L5/E5a/B2a:  0.772   0.570   1.000  
Obs E5a+b/B2a+b:  1.000   1.000  
Obs L6/E6/B3I/G2a: 
Obs G3: 

Cycle Slips               
Num cycle slips > 15°: 
% slips per complete obs:  0.008 %  0.016 %  0.015 % 
Num complete obs per slip:  12649   6249   6575  
IOD Slips > 15°: 
Outliers > 15°: 
LLI : Obs L1/E1/B1I:  0.0000   0.0001  
LLI : Obs L2/B1C:  0.0000   0.0000  
LLI : Obs E5b/B2I: 
LLI : Obs L5/E5a/B2a: 
LLI : Obs E5a+b/B2a+b: 
LLI : Obs L6/E6/B3I/G2a: 
LLI : Obs G3: 

Multipath               
MP (L1/E1/B1I) RMS:  0.170 m  0.087 m  0.112 m  0.077 m  0.449 m 
MP (L2/B1C) RMS:  0.142 m  0.132 m  0.162 m 
MP (L5/E5a/B2a) RMS:  0.113 m  0.101 m  0.123 m 
MP (E5b/B2I) RMS:  0.143 m  0.125 m  0.198 m 
MP (E5a+b/B2a+b) RMS:  0.041 m  0.041 m 
MP (L6/E6/B3I/G2a) RMS: 
MP (G3) RMS: 

Extended Quality Information:


Tracking by observation type > 15°: 
Type Code Phase SNR Doppler
L1C 100.0 %
100.0 %
100.0 %
100.0 %
L1I 100.0 %
100.0 %
100.0 %
100.0 %
L2C 80.8 %
80.8 %
80.8 %
80.8 %
L2P 80.8 %
80.8 %
80.8 %
80.8 %
L2S 94.7 %
94.7 %
94.7 %
94.7 %
L2W 100.0 %
100.0 %
100.0 %
100.0 %
L5Q 77.2 %
77.2 %
77.2 %
77.2 %
L7I 37.2 %
37.2 %
37.2 %
37.2 %
L7Q 100.0 %
100.0 %
100.0 %
100.0 %
L8Q 100.0 %
100.0 %
100.0 %
100.0 %

Tracking by satellite > 15°: 
SV GPS Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
G2 15.00° 16.90° 565 565 (100.0 %)
0 (0.0 %) 0
G10 15.00° 20.72° 1611 1611 (100.0 %)
0 (0.0 %) 0
G12 59.83° 79.99° 3600 3600 (100.0 %)
0 (0.0 %) 0
G15 15.01° 27.19° 1733 1733 (100.0 %)
0 (0.0 %) 0
G19 15.00° 17.98° 614 614 (100.0 %)
0 (0.0 %) 0
G23 15.00° 16.51° 293 293 (100.0 %)
0 (0.0 %) 0
G24 44.47° 62.07° 3600 3600 (100.0 %)
0 (0.0 %) 0
G25 49.86° 66.68° 3600 3600 (100.0 %)
0 (0.0 %) 0
G29 15.01° 38.53° 3067 3067 (100.0 %)
0 (0.0 %) 0
G32 23.68° 43.73° 3600 3600 (100.0 %)
0 (0.0 %) 0

SV GLONASS Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
R1 15.00° 30.24° 3369 3369 (100.0 %)
0 (0.0 %) 0
R7 15.01° 45.52° 3512 3512 (100.0 %)
0 (0.0 %) 1
R8 39.77° 49.80° 3600 3600 (100.0 %)
0 (0.0 %) 0
R9 28.33° 45.03° 3600 3600 (100.0 %)
0 (0.0 %) 0
R10 48.90° 52.96° 3600 3600 (100.0 %)
0 (0.0 %) 0
R20 30.27° 37.52° 3167 1067 (33.7 %)
0 (0.0 %) 2

SV Galileo Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
E2 65.78° 68.28° 3600 3600 (100.0 %)
0 (0.0 %) 0
E3 32.65° 57.09° 3600 3600 (100.0 %)
0 (0.0 %) 1
E7 15.00° 22.09° 1726 1726 (100.0 %)
0 (0.0 %) 1
E8 51.44° 55.24° 3600 3600 (100.0 %)
0 (0.0 %) 0
E25 33.43° 49.86° 3600 3600 (100.0 %)
0 (0.0 %) 1
E30 19.66° 33.06° 3600 3600 (100.0 %)
0 (0.0 %) 0
E36 - - 0 0 (-)
3600 (-) 0

SV BeiDou Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
C11 32.48° 41.14° 3600 3600 (100.0 %)
0 (0.0 %) 0
C12 15.00° 20.05° 2039 2039 (100.0 %)
0 (0.0 %) 0
C20 15.00° 17.20° 1395 1395 (100.0 %)
0 (0.0 %) 0
C23 58.56° 67.12° 3600 3600 (100.0 %)
0 (0.0 %) 0
C25 35.36° 50.43° 3600 3600 (100.0 %)
0 (0.0 %) 0
C28 15.00° 20.86° 908 908 (100.0 %)
0 (0.0 %) 0

Missing phase observations by satellite > 15°: 
SV GPS Observations Missing L1C Missing L2S Missing L2W Missing L5Q
G2 0.7 %
0.0 %
100.0 %
0.0 %
100.0 %
G10 2.1 %
0.0 %
0.0 %
0.0 %
0.0 %
G12 4.7 %
0.0 %
0.0 %
0.0 %
100.0 %
G15 2.3 %
0.0 %
0.0 %
0.0 %
100.0 %
G19 0.8 %
0.0 %
100.0 %
0.0 %
100.0 %
G23 0.4 %
0.0 %
0.0 %
0.0 %
0.0 %
G24 4.7 %
0.0 %
0.0 %
0.0 %
0.0 %
G25 4.7 %
0.0 %
0.0 %
0.0 %
0.0 %
G29 4.0 %
0.0 %
0.0 %
0.0 %
100.0 %
G32 4.7 %
0.0 %
0.0 %
0.0 %
0.0 %

SV GLONASS Observations Missing L1C Missing L2C Missing L2P
R1 4.4 %
0.0 %
0.0 %
0.0 %
R7 4.6 %
0.0 %
0.0 %
0.0 %
R8 4.7 %
0.0 %
0.0 %
0.0 %
R9 4.7 %
0.0 %
0.0 %
0.0 %
R10 4.7 %
0.0 %
100.0 %
100.0 %
R20 1.4 %
0.0 %
0.4 %
0.4 %

SV Galileo Observations Missing L1C Missing L5Q Missing L7Q Missing L8Q
E2 4.7 %
0.0 %
0.0 %
0.0 %
0.0 %
E3 4.7 %
0.0 %
0.0 %
0.0 %
0.0 %
E7 2.3 %
0.0 %
0.0 %
0.0 %
0.0 %
E8 4.7 %
0.0 %
0.0 %
0.0 %
0.0 %
E25 4.7 %
0.0 %
0.0 %
0.0 %
0.0 %
E30 4.7 %
0.0 %
0.0 %
0.0 %
0.0 %

SV BeiDou Observations Missing L2I Missing L7I
C11 4.7 %
0.0 %
0.0 %
C12 2.7 %
0.0 %
0.0 %
C20 1.8 %
0.0 %
100.0 %
C23 4.7 %
0.0 %
100.0 %
C25 4.7 %
0.0 %
100.0 %
C28 1.2 %
0.0 %
100.0 %

Missing code observations by satellite > 15°: 
SV GPS Missing C1C Missing C2S Missing C2W Missing C5Q
G2 0.0 %
100.0 %
0.0 %
100.0 %
G10 0.0 %
0.0 %
0.0 %
0.0 %
G12 0.0 %
0.0 %
0.0 %
100.0 %
G15 0.0 %
0.0 %
0.0 %
100.0 %
G19 0.0 %
100.0 %
0.0 %
100.0 %
G23 0.0 %
0.0 %
0.0 %
0.0 %
G24 0.0 %
0.0 %
0.0 %
0.0 %
G25 0.0 %
0.0 %
0.0 %
0.0 %
G29 0.0 %
0.0 %
0.0 %
100.0 %
G32 0.0 %
0.0 %
0.0 %
0.0 %

SV GLONASS Missing C1C Missing C2C Missing C2P
R1 0.0 %
0.0 %
0.0 %
R7 0.0 %
0.0 %
0.0 %
R8 0.0 %
0.0 %
0.0 %
R9 0.0 %
0.0 %
0.0 %
R10 0.0 %
100.0 %
100.0 %
R20 0.0 %
0.1 %
0.1 %

SV Galileo Missing C1C Missing C5Q Missing C7Q Missing C8Q
E2 0.0 %
0.0 %
0.0 %
0.0 %
E3 0.0 %
0.0 %
0.0 %
0.0 %
E7 0.0 %
0.0 %
0.0 %
0.0 %
E8 0.0 %
0.0 %
0.0 %
0.0 %
E25 0.0 %
0.0 %
0.0 %
0.0 %
E30 0.0 %
0.0 %
0.0 %
0.0 %

SV BeiDou Missing C2I Missing C7I
C11 0.0 %
0.0 %
C12 0.0 %
0.0 %
C20 0.0 %
100.0 %
C23 0.0 %
100.0 %
C25 0.0 %
100.0 %
C28 0.0 %
100.0 %

Tracking by satellite elevation > 15°: 
Elevation Cycle Slips GPS Cycle Slips GLONASS Cycle Slips Galileo Cycle Slips BeiDou Cycle Slips QZSS Cycle Slips NavIC Observations
85 - 90 0
0
0
0
0
0
0.0 %
80 - 85 0
0
0
0
0
0
0.0 %
75 - 80 0
0
0
0
0
0
1.6 %
70 - 75 0
0
0
0
0
0
1.1 %
65 - 70 0
0
0
0
0
0
8.2 %
60 - 65 0
0
0
0
0
0
5.7 %
55 - 60 0
0
0
0
0
0
5.1 %
50 - 55 0
0
0
0
0
0
11.0 %
45 - 50 0
0
0
0
0
0
9.3 %
40 - 45 0
0
1
0
0
0
10.1 %
35 - 40 0
0
0
0
0
0
10.7 %
30 - 35 0
2
1
0
0
0
8.1 %
25 - 30 0
0
0
0
0
0
7.2 %
20 - 25 0
0
0
0
0
0
7.1 %
15 - 20 0
1
1
0
0
0
14.7 %
10 - 15 0
0
0
0
0
0
0.0 %
5 - 10 0
0
0
0
0
0
0.0 %
0 - 5 0
0
0
0
0
0
0.0 %

Signal to Noise Ratio by satellite > 15°: 
SV GPS L1 L2 L5
G2 40.5
39.5
-
G10 42.2
44.1
47.0
G12 53.7
53.2
-
G15 42.7
42.2
-
G19 39.7
39.2
-
G23 39.6
44.1
47.9
G24 51.1
53.0
56.5
G25 52.4
52.9
57.2
G29 44.3
44.5
-
G32 47.9
48.3
51.0
Average GPS: 45.4
46.1
51.9

SV GLONASS G1 G2
R1 41.2
38.0
R7 46.2
44.8
R8 49.3
48.5
R9 48.5
46.6
R10 51.1
-
R20 36.1
45.7
Average GLONASS: 45.4
44.7

SV Galileo E1 E5a E5b E5a+b
E2 55.1
56.1
56.4
59.4
E3 50.8
52.7
53.0
56.1
E7 42.6
45.7
46.0
49.1
E8 53.5
54.5
54.9
57.9
E25 49.6
51.6
51.8
55.0
E30 45.8
48.2
48.3
51.5
Average Galileo: 49.6
51.5
51.7
54.8

SV BeiDou B1I B2I
C11 46.0
50.3
C12 38.2
44.7
C20 41.4
-
C23 54.0
-
C25 49.4
-
C28 42.2
-
Average BeiDou: 45.2
47.5

Code multipath by satellite > 15°: 
SV GPS Av Elev MP (L1) MP (L2) MP (L5)
G2 16.0 ° 0.17 m
0.18 m
-
G10 17.9 ° 0.06 m
0.06 m
0.10 m
G12 69.9 ° 0.03 m
0.04 m
-
G15 21.1 ° 0.11 m
0.27 m
-
G19 16.5 ° 0.14 m
0.22 m
-
G23 15.8 ° 0.06 m
0.07 m
0.11 m
G24 53.3 ° 0.05 m
0.04 m
0.07 m
G25 58.3 ° 0.03 m
0.04 m
0.06 m
G29 26.8 ° 0.11 m
0.31 m
-
G32 33.7 ° 0.10 m
0.08 m
0.16 m
Average GPS: - 0.09 m
0.13 m
0.10 m

SV GLONASS Av Elev MP (G1) MP (G2)
R1 22.6 ° 0.17 m
0.23 m
R7 30.3 ° 0.08 m
0.18 m
R8 44.8 ° 0.06 m
0.08 m
R9 36.7 ° 0.07 m
0.13 m
R10 - - -
R20 33.9 ° 0.18 m
0.20 m
Average GLONASS: - 0.11 m
0.16 m

SV Galileo Av Elev MP (E1) MP (E5a) MP (E5b) MP (E5a+b)
E2 67.0 ° 0.03 m
0.06 m
0.05 m
0.02 m
E3 44.9 ° 0.07 m
0.07 m
0.09 m
0.06 m
E7 18.5 ° 0.22 m
0.39 m
0.37 m
0.08 m
E8 53.3 ° 0.03 m
0.06 m
0.06 m
0.02 m
E25 41.6 ° 0.04 m
0.11 m
0.10 m
0.02 m
E30 26.4 ° 0.07 m
0.05 m
0.08 m
0.04 m
Average Galileo: - 0.08 m
0.12 m
0.12 m
0.04 m

SV BeiDou Av Elev MP (B1I) MP (B2I)
C11 36.8 ° 0.09 m
0.12 m
C12 17.5 ° 0.23 m
0.27 m
C20 16.1 ° 0.22 m
-
C23 62.8 ° 0.05 m
-
C25 42.9 ° 0.21 m
-
C28 17.9 ° 1.88 m
-
Average BeiDou: - 0.45 m
0.20 m

Code multipath by satellite elevation > 15°: 
Elevation MP (L1/E1/B1I) MP (L2/B1C) MP (L5/E5a/B2a) MP (E5b/B2I) MP (E5a+b/B2a+b) MP (L6/E6/B3I/G2a) MP (G3)
85 - 90 - - - - - - -
80 - 85 - - - - - - -
75 - 80 0.03 m
0.03 m
- - - - -
70 - 75 0.03 m
0.03 m
- - - - -
65 - 70 0.03 m
0.04 m
0.06 m
0.05 m
0.02 m
- -
60 - 65 0.04 m
0.04 m
0.06 m
- - - -
55 - 60 0.05 m
0.04 m
0.07 m
0.06 m
0.03 m
- -
50 - 55 0.05 m
0.04 m
0.06 m
0.06 m
0.03 m
- -
45 - 50 0.09 m
0.07 m
0.05 m
0.05 m
0.02 m
- -
40 - 45 0.06 m
0.12 m
0.08 m
0.08 m
0.04 m
- -
35 - 40 0.11 m
0.13 m
0.15 m
0.14 m
0.05 m
- -
30 - 35 0.10 m
0.15 m
0.11 m
0.12 m
0.05 m
- -
25 - 30 0.13 m
0.17 m
0.11 m
0.08 m
0.04 m
- -
20 - 25 0.18 m
0.18 m
0.20 m
0.23 m
0.05 m
- -
15 - 20 0.27 m
0.26 m
0.18 m
0.27 m
0.08 m
- -
10 - 15 - - - - - - -
5 - 10 - - - - - - -
0 - 5 - - - - - - -


Observation File Messages:





GPS Navigation File Messages:




GLONASS Navigation File Messages:




Galileo Navigation File Messages:




BeiDou Navigation File Messages:




General Messages:


- Updated header information or comments after epoch 2021/11/05 19:59:59.00

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 code and phase measurements with a SNR of at least 0 
(#)  A complete GLONASS observation contains non-zero G1 code and phase measurements with a SNR of at least 0 
(#)  A complete Galileo observation contains non-zero E1, E5a code and phase measurements with a SNR of at least 0 
(#)  A complete BeiDou observation contains non-zero B1I code and phase measurements with a SNR of at least 0 
(#)  A complete QZSS observation contains non-zero L1 code and phase measurements with a SNR of at least 0 
(#)  A complete NavIC observation contains non-zero L5 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  
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