Leica SpiderQC v7.5 Quality Report


Program Run: 2021/07/20 18:01:24.32

File Details:


Observation File: algc201r.21o
GPS Navigation File: algc201r.21n
GLONASS Navigation File: algc201r.21g
Galileo Navigation File: algc201r.21l
BeiDou Navigation File: algc201r.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:  1.6 m dX  -6.3 m dY  4.1 m dZ 
Diff. Est-Header:  7.7 m (3600 estimates) 

Session Summary:


Time of first obs:  2021/07/20 17:00:00.00 GPS 
Time of last obs:  2021/07/20 17:59:59.00 GPS 
Session length:  59.98 minutes 
GPS week:  2167, day 2 
Observation interval:  1.00 seconds 
UTC leap seconds:  18 seconds 

Num SVs with obs:  43 
Num SVs with nav:  102 
Total GPS orbits:  35 
Total GLONASS orbits:  44 
Total Galileo orbits:  98 
Total BeiDou orbits:  33 
Total QZSS orbits: 
Total NavIC orbits: 
SVs with obs:  G1 G2 G3 G4 G6 G7 G9 G17 G19 G20 G21 G22 G30 R1 R6 R7 R8 R9 R10 R15 R16 R21 R22 R23 R24 E2 E3 E5 E7 E8 E13 E15 E26 C5 C9 C20 C23 C24 C25 C27 C28 C29 C30  
SVs without obs:  G5 G8 G10 G11 G12 G13 G14 G15 G16 G18 G23 G24 G25 G26 G27 G28 G29 G31 G32 R2 R3 R4 R5 R11 R12 R13 R14 R17 R18 R19 R20 E1 E4 E6 E9 E10 E11 E12 E14 E16 E17 E18 E19 E20 E21 E22 E23 E24 E25 E27 E28 E29 E30 E31 E32 E33 E34 E35 E36 C1 C2 C3 C4 C6 C7 C8 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19 C21 C22 C26 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 R11 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:  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 1 slips, Threshold 58 slips 
Multipath:  Pass  Value 0.10m MP1 / 0.11m MP2 / 0.11m MP5, Threshold 0.5 m 
Data Completeness:  Pass  Value 100.0 %, Threshold 95.0 % 
Navigation Data:  Pass   
     
GLONASS Specific Tests 
Cycle Slips:  Pass  Value 0 slips, Threshold 143 slips 
Multipath:  Pass  Value 0.15m MP1 / 0.20m MP2, Threshold 0.5 m 
Data Completeness:  Pass  Value 100.0 %, Threshold 90.0 % 
Navigation Data:  Pass   
     
Galileo Specific Tests 
Cycle Slips:  Pass  Value 3 slips, Threshold 106 slips 
Multipath:  Pass  Value 0.05m MP1 / 0.15m MP5a / 0.08m 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 82 slips 
Multipath:  Fail  Value 0.77m MP1, Threshold 0.5 m 
Data Completeness:  Pass  Value 100.0 %, Threshold 90.0 % 
Navigation Data:  Pass   

General Quality Indicators:


Tracking   
Num obs > 0°:  124292 
Num possible obs > 0°:  131820 
Num obs with invalid nav: 
Num obs without nav: 
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°:  3600  (100.0 %) 
Epochs with full data > 15°:  3600  (100.0 %) 

Satellite Geometry 
DOP  Minimum  Maximum  Average 
PDOP  2.2  2.4  2.3 
GDOP  2.7  2.9  2.8 

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 
None   

Receiver Clock 
Clock Slips > 15°: 
Max RX clock offset:  0.000023 ms (at 2021/07/20 17:51:28.00) 
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°:  124292  39712  31103  20954  32523 
Num possible obs > 0°:  131820  41134  33083  23617  33986 
Num obs with invalid nav: 
Num obs without nav: 
Num obs to unhealthy SV: 
               
Tracking over Elevation Mask (15°) 
Num obs > 15°:  84023  28846  23866  17696  13615 
% obs > 15°:   100.0 %  100.0 %  100.0 %  100.0 %  100.0 % 
Num possible obs > 15°:  84023  28846  23866  17696  13615 
Num complete obs > 15°:  84023  28846  23866  17696  13615 
% complete obs > 15°:   100.0 %  100.0 %  100.0 %  100.0 %  100.0 % 
Num obs with WLF change:  
Average # SV per Epoch:  23.3   8.0   6.6   4.9   3.8  
               
Observation ratio w.r.t. L1/E1/B1I: 
Obs L2/B1C:  1.634   1.773   1.465  
Obs E5b/B2I:  0.565   1.000  
Obs L5/E5a/B2a:  0.707   0.527   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:  0.005 %  0.003 %  0.017 % 
Num complete obs per slip:  21005   28846   5898  
IOD Slips > 15°: 
Outliers > 15°: 
LLI : Obs L1/E1/B1I: 
LLI : Obs L2/B1C: 
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:  0.227 m  0.103 m  0.151 m  0.054 m  0.775 m 
MP (L2/B1C) RMS:  0.139 m  0.106 m  0.195 m 
MP (L5/E5a/B2a) RMS:  0.129 m  0.113 m  0.145 m 
MP (E5b/B2I) RMS:  0.079 m  0.079 m 
MP (E5a+b/B2a+b) RMS:  0.038 m  0.038 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 73.3 %
73.3 %
73.3 %
73.3 %
L2P 73.3 %
73.3 %
73.3 %
73.3 %
L2S 77.3 %
77.3 %
77.3 %
77.3 %
L2W 100.0 %
100.0 %
100.0 %
100.0 %
L5Q 70.7 %
70.7 %
70.7 %
70.7 %
L7I 0.0 %
0.0 %
0.0 %
0.0 %
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
G1 15.00° 20.01° 804 804 (100.0 %)
0 (0.0 %) 0
G2 15.00° 33.29° 2954 2954 (100.0 %)
0 (0.0 %) 0
G3 15.00° 31.24° 3403 3403 (100.0 %)
0 (0.0 %) 0
G4 35.61° 61.56° 3600 3600 (100.0 %)
0 (0.0 %) 0
G6 43.24° 68.87° 3600 3600 (100.0 %)
0 (0.0 %) 0
G7 17.04° 41.31° 3600 3600 (100.0 %)
0 (0.0 %) 0
G9 72.47° 87.64° 3600 3600 (100.0 %)
0 (0.0 %) 0
G17 15.00° 38.25° 3477 3477 (100.0 %)
0 (0.0 %) 0
G19 26.35° 45.55° 3600 3600 (100.0 %)
0 (0.0 %) 1
G30 15.00° 16.40° 208 208 (100.0 %)
0 (0.0 %) 0

SV GLONASS Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
R6 15.00° 35.17° 3353 3353 (100.0 %)
0 (0.0 %) 0
R7 50.91° 63.25° 3600 3600 (100.0 %)
0 (0.0 %) 0
R8 28.19° 44.09° 3600 3600 (100.0 %)
0 (0.0 %) 0
R9 15.00° 21.51° 1216 1216 (100.0 %)
0 (0.0 %) 0
R16 15.00° 16.71° 2013 2013 (100.0 %)
0 (0.0 %) 0
R21 15.01° 46.79° 3456 3456 (100.0 %)
0 (0.0 %) 0
R22 54.60° 73.96° 3600 3600 (100.0 %)
0 (0.0 %) 0
R23 15.00° 36.90° 3028 3028 (100.0 %)
0 (0.0 %) 0

SV Galileo Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
E3 38.88° 58.58° 3600 3600 (100.0 %)
0 (0.0 %) 1
E7 15.00° 28.67° 3077 3077 (100.0 %)
0 (0.0 %) 0
E8 63.54° 74.72° 3600 3600 (100.0 %)
0 (0.0 %) 0
E13 49.21° 65.32° 3600 3600 (100.0 %)
0 (0.0 %) 0
E15 47.82° 73.18° 3600 3600 (100.0 %)
0 (0.0 %) 2
E26 15.00° 16.10° 219 219 (100.0 %)
0 (0.0 %) 0

SV BeiDou Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
C23 15.00° 23.67° 1621 1621 (100.0 %)
0 (0.0 %) 0
C25 16.41° 26.54° 3600 3600 (100.0 %)
0 (0.0 %) 0
C27 36.38° 60.10° 3600 3600 (100.0 %)
0 (0.0 %) 0
C28 15.01° 23.01° 1194 1194 (100.0 %)
0 (0.0 %) 0
C30 35.07° 42.13° 3600 3600 (100.0 %)
0 (0.0 %) 0

Missing phase observations by satellite > 15°: 
SV GPS Observations Missing L1C Missing L2S Missing L2W Missing L5Q
G1 1.0 %
0.0 %
0.0 %
0.0 %
0.0 %
G2 3.5 %
0.0 %
100.0 %
0.0 %
100.0 %
G3 4.1 %
0.0 %
0.0 %
0.0 %
0.0 %
G4 4.3 %
0.0 %
0.0 %
0.0 %
0.0 %
G6 4.3 %
0.0 %
0.0 %
0.0 %
0.0 %
G7 4.3 %
0.0 %
0.0 %
0.0 %
100.0 %
G9 4.3 %
0.0 %
0.0 %
0.0 %
0.0 %
G17 4.1 %
0.0 %
0.0 %
0.0 %
100.0 %
G19 4.3 %
0.0 %
100.0 %
0.0 %
100.0 %
G30 0.2 %
0.0 %
0.0 %
0.0 %
0.0 %

SV GLONASS Observations Missing L1C Missing L2C Missing L2P
R6 4.0 %
0.0 %
100.0 %
100.0 %
R7 4.3 %
0.0 %
0.0 %
0.0 %
R8 4.3 %
0.0 %
0.0 %
0.0 %
R9 1.4 %
0.0 %
0.0 %
0.0 %
R16 2.4 %
0.0 %
0.0 %
0.0 %
R21 4.1 %
0.0 %
0.0 %
0.0 %
R22 4.3 %
0.0 %
0.0 %
0.0 %
R23 3.6 %
0.0 %
100.0 %
100.0 %

SV Galileo Observations Missing L1C Missing L5Q Missing L7Q Missing L8Q
E3 4.3 %
0.0 %
0.0 %
0.0 %
0.0 %
E7 3.7 %
0.0 %
0.0 %
0.0 %
0.0 %
E8 4.3 %
0.0 %
0.0 %
0.0 %
0.0 %
E13 4.3 %
0.0 %
0.0 %
0.0 %
0.0 %
E15 4.3 %
0.0 %
0.0 %
0.0 %
0.0 %
E26 0.3 %
0.0 %
0.0 %
0.0 %
0.0 %

SV BeiDou Observations Missing L2I Missing L7I
C23 1.9 %
0.0 %
100.0 %
C25 4.3 %
0.0 %
100.0 %
C27 4.3 %
0.0 %
100.0 %
C28 1.4 %
0.0 %
100.0 %
C30 4.3 %
0.0 %
100.0 %

Missing code observations by satellite > 15°: 
SV GPS Missing C1C Missing C2S Missing C2W Missing C5Q
G1 0.0 %
0.0 %
0.0 %
0.0 %
G2 0.0 %
100.0 %
0.0 %
100.0 %
G3 0.0 %
0.0 %
0.0 %
0.0 %
G4 0.0 %
0.0 %
0.0 %
0.0 %
G6 0.0 %
0.0 %
0.0 %
0.0 %
G7 0.0 %
0.0 %
0.0 %
100.0 %
G9 0.0 %
0.0 %
0.0 %
0.0 %
G17 0.0 %
0.0 %
0.0 %
100.0 %
G19 0.0 %
100.0 %
0.0 %
100.0 %
G30 0.0 %
0.0 %
0.0 %
0.0 %

SV GLONASS Missing C1C Missing C2C Missing C2P
R6 0.0 %
100.0 %
100.0 %
R7 0.0 %
0.0 %
0.0 %
R8 0.0 %
0.0 %
0.0 %
R9 0.0 %
0.0 %
0.0 %
R16 0.0 %
0.0 %
0.0 %
R21 0.0 %
0.0 %
0.0 %
R22 0.0 %
0.0 %
0.0 %
R23 0.0 %
100.0 %
100.0 %

SV Galileo Missing C1C Missing C5Q Missing C7Q Missing C8Q
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 %
E13 0.0 %
0.0 %
0.0 %
0.0 %
E15 0.0 %
0.0 %
0.0 %
0.0 %
E26 0.0 %
0.0 %
0.0 %
0.0 %

SV BeiDou Missing C2I Missing C7I
C23 0.0 %
100.0 %
C25 0.0 %
100.0 %
C27 0.0 %
100.0 %
C28 0.0 %
100.0 %
C30 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
1.3 %
80 - 85 0
0
0
0
0
0
1.5 %
75 - 80 0
0
0
0
0
0
1.1 %
70 - 75 0
0
0
0
0
0
5.6 %
65 - 70 0
0
0
0
0
0
3.9 %
60 - 65 0
0
0
0
0
0
6.3 %
55 - 60 0
0
2
0
0
0
7.6 %
50 - 55 0
0
0
0
0
0
6.6 %
45 - 50 0
0
0
0
0
0
4.5 %
40 - 45 0
0
1
0
0
0
9.1 %
35 - 40 0
0
0
0
0
0
8.3 %
30 - 35 0
0
0
0
0
0
7.3 %
25 - 30 1
0
0
0
0
0
9.5 %
20 - 25 0
0
0
0
0
0
11.6 %
15 - 20 0
0
0
0
0
0
15.7 %
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
G1 38.8
42.5
46.9
G2 43.4
41.8
-
G3 41.2
44.8
49.1
G4 48.3
51.0
53.7
G6 51.6
53.4
56.5
G7 44.8
44.1
-
G9 54.8
55.7
58.8
G17 44.6
44.4
-
G19 47.2
46.5
-
G30 39.0
40.5
47.3
Average GPS: 45.4
46.5
52.0

SV GLONASS G1 G2
R6 35.5
-
R7 52.8
50.4
R8 46.6
46.6
R9 42.1
41.5
R16 37.1
36.2
R21 46.2
45.2
R22 42.4
38.9
R23 45.5
-
Average GLONASS: 43.5
43.1

SV Galileo E1 E5a E5b E5a+b
E3 51.1
52.8
53.4
56.2
E7 43.5
46.6
46.9
49.9
E8 54.6
55.7
56.6
59.3
E13 53.3
54.6
55.2
58.1
E15 53.2
54.9
55.6
58.4
E26 40.9
44.4
44.7
47.8
Average Galileo: 49.4
51.5
52.1
54.9

SV BeiDou B1I
C23 41.5
C25 42.7
C27 51.8
C28 41.7
C30 49.1
Average BeiDou: 45.4

Code multipath by satellite > 15°: 
SV GPS Av Elev MP (L1) MP (L2) MP (L5)
G1 17.5 ° 0.23 m
0.14 m
0.23 m
G2 24.1 ° 0.17 m
0.18 m
-
G3 23.1 ° 0.15 m
0.09 m
0.15 m
G4 48.6 ° 0.04 m
0.05 m
0.06 m
G6 56.1 ° 0.08 m
0.05 m
0.10 m
G7 29.2 ° 0.11 m
0.11 m
-
G9 80.1 ° 0.03 m
0.04 m
0.05 m
G17 26.6 ° 0.11 m
0.10 m
-
G19 35.9 ° 0.07 m
0.06 m
-
G30 15.7 ° 0.05 m
0.24 m
0.08 m
Average GPS: - 0.10 m
0.11 m
0.11 m

SV GLONASS Av Elev MP (G1) MP (G2)
R6 - - -
R7 57.1 ° 0.04 m
0.06 m
R8 36.1 ° 0.07 m
0.11 m
R9 18.3 ° 0.09 m
0.27 m
R16 15.9 ° 0.51 m
0.56 m
R21 30.9 ° 0.11 m
0.11 m
R22 64.3 ° 0.09 m
0.07 m
R23 - - -
Average GLONASS: - 0.15 m
0.20 m

SV Galileo Av Elev MP (E1) MP (E5a) MP (E5b) MP (E5a+b)
E3 48.7 ° 0.03 m
0.07 m
0.07 m
0.02 m
E7 21.8 ° 0.08 m
0.08 m
0.08 m
0.05 m
E8 69.1 ° 0.03 m
0.06 m
0.04 m
0.02 m
E13 57.3 ° 0.03 m
0.09 m
0.08 m
0.02 m
E15 60.5 ° 0.05 m
0.10 m
0.09 m
0.05 m
E26 15.6 ° 0.11 m
0.46 m
0.11 m
0.08 m
Average Galileo: - 0.05 m
0.15 m
0.08 m
0.04 m

SV BeiDou Av Elev MP (B1I)
C23 19.3 ° 1.03 m
C25 21.5 ° 1.27 m
C27 48.2 ° 0.66 m
C28 19.0 ° 0.76 m
C30 38.6 ° 0.16 m
Average BeiDou: - 0.77 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 0.03 m
0.03 m
0.04 m
- - - -
80 - 85 0.03 m
0.05 m
0.06 m
- - - -
75 - 80 0.03 m
0.05 m
0.06 m
- - - -
70 - 75 0.04 m
0.06 m
0.04 m
0.04 m
0.01 m
- -
65 - 70 0.07 m
0.06 m
0.06 m
0.05 m
0.02 m
- -
60 - 65 0.05 m
0.05 m
0.08 m
0.07 m
0.03 m
- -
55 - 60 0.17 m
0.06 m
0.08 m
0.10 m
0.03 m
- -
50 - 55 0.10 m
0.06 m
0.10 m
0.10 m
0.02 m
- -
45 - 50 0.07 m
0.05 m
0.11 m
0.08 m
0.03 m
- -
40 - 45 0.14 m
0.08 m
0.07 m
0.06 m
0.01 m
- -
35 - 40 0.17 m
0.09 m
0.07 m
0.05 m
0.02 m
- -
30 - 35 0.10 m
0.08 m
0.07 m
- - - -
25 - 30 0.28 m
0.10 m
0.13 m
0.06 m
0.04 m
- -
20 - 25 0.40 m
0.13 m
0.11 m
0.09 m
0.06 m
- -
15 - 20 0.46 m
0.28 m
0.16 m
0.08 m
0.06 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 2021/07/20 17:59:59.00

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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