Leica SpiderQC v7.1 Quality Report


Program Run: 2020/10/06 02:01:06.50

File Details:


Observation File: mlga280b.20o
GPS Navigation File: mlga280b.20n
GLONASS Navigation File: mlga280b.20g
Galileo Navigation File: mlga280b.20l
BeiDou Navigation File: mlga280b.20f
Quality Testing:  Fail (See below for details) 

Station Details:


Marker Name/Number:  MLGA  13460M001   
Observer/Agency:  IECA  Junta de Andalucia   
Receiver #/Type/Vers:  1834192  LEICA GR50  4.31/7.403 
Antenna #/Type:  23035023  LEIAR20 LEIM   
Antenna Offsets (HEN):  0.077  0.000  0.000 
Approx Position (XYZ):  5103686.767  -395880.369  3792208.996 
Approx Position (plh):  36° 42' 56.14761" N  4° 26' 7.47851" W  115.727m 
Diff. Est-Header:  3.8 m dX  -5.7 m dY  3.7 m dZ 
Diff. Est-Header:  7.8 m (3600 estimates) 

Session Summary:


Time of first obs:  2020/10/06 01:00:00.00 GPS 
Time of last obs:  2020/10/06 01:59:59.00 GPS 
Session length:  59.98 minutes 
GPS week:  2126, day 2 
Observation interval:  1.00 seconds 
UTC leap seconds:  18 seconds 

Num SVs with obs:  36 
Num SVs with nav:  99 
Total GPS orbits:  33 
Total GLONASS orbits:  41 
Total Galileo orbits:  121 
Total BeiDou orbits:  32 
Total QZSS orbits: 
SVs with obs:  G2 G12 G16 G18 G24 G25 G26 G29 G31 G32 R4 R5 R13 R14 R15 R17 R18 R23 R24 E2 E7 E13 E15 E21 E27 E30 E36 C5 C8 C11 C12 C13 C23 C24 C25 C26  
SVs without obs:  G1 G3 G4 G5 G6 G7 G8 G9 G10 G11 G13 G14 G15 G17 G19 G20 G21 G22 G23 G27 G28 G30 R1 R2 R3 R6 R7 R8 R9 R10 R11 R12 R16 R19 R20 R21 R22 E1 E3 E4 E5 E6 E8 E9 E10 E11 E12 E14 E16 E17 E18 E19 E20 E22 E23 E24 E25 E26 E28 E29 E31 E32 E33 E34 E35 C1 C2 C3 C4 C6 C7 C9 C10 C14 C15 C16 C17 C18 C19 C20 C21 C22 C27 C28 C29 C30 C31 C32 C33 C34 C35 C36 C37 J1 J2 J3 J4 J5 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16 S17 S18 S19 S20 S21 S22 S23 S24 S25 S26 S27 S28 S29 S30 S31 S32 S33 S34 S35 S36 S37 S38 S39 S40 S41 S42 S43 S44 S45 S46 S47 S48 S49 S50 S51 S52 S53 S54 S55 S56 S57 S58 S59 S60  
SVs with nav:  G1 G2 G3 G4 G5 G6 G7 G8 G9 G10 G11 G12 G13 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 E15 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:  G14 E6 E10 E14 E16 E17 E18 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 45 slips 
Multipath:  Pass  Value 0.15m MP1 / 0.14m MP2 / 0.24m MP5, Threshold 0.5 m 
Data Completeness:  Pass  Value 100.0 %, Threshold 95.0 % 
Navigation Data:  Pass   
     
GLONASS Specific Tests 
Cycle Slips:  Pass  Value 1 slips, Threshold 131 slips 
Multipath:  Pass  Value 0.14m MP1 / 0.17m MP2, Threshold 0.5 m 
Data Completeness:  Pass  Value 100.0 %, Threshold 90.0 % 
Navigation Data:  Pass   
     
Galileo Specific Tests 
Cycle Slips:  Pass  Value 0 slips, Threshold 85 slips 
Multipath:  Pass  Value 0.12m MP1 / 0.18m MP5a / 0.17m MP5b / 0.05m 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 1 slips, Threshold 123 slips 
Multipath:  Pass  Value 0.19m MP1 / 0.27m MP5b, Threshold 0.5 m 
Data Completeness:  Fail  Value 52.5 %, Threshold 90.0 % 
Navigation Data:  Pass   

General Quality Indicators:


Tracking   
Num obs > 0°:  111739 
Num possible obs > 0°:  115024 
Num obs with invalid nav: 
Num obs without nav:  1081 
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°:  (0.0 %) 

Satellite Geometry 
DOP  Minimum  Maximum  Average 
PDOP  2.2  2.5  2.4 
GDOP  2.8  3.0  2.9 

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:  0.000028 ms (at 2020/10/06 01:35:32.00) 
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 
Tracking information over 0° 
Num obs > 0°:  111739  29660  27381  24054  30644 
Num possible obs > 0°:  115024  30917  27940  25154  31013 
Num obs with invalid nav: 
Num obs without nav:  1081  1081 
Num obs to unhealthy SV: 
             
Tracking over Elevation Mask (15°) 
Num obs > 15°:  78910  22343  21846  14155  20566 
% obs > 15°:   100.0 %  100.0 %  100.0 %  100.0 %  100.0 % 
Num possible obs > 15°:  78910  22343  21846  14155  20566 
Num complete obs > 15°:  69144  22343  21846  14155  10800 
% complete obs > 15°:   87.6 %  100.0 %  100.0 %  100.0 %  52.5 % 
Num obs with WLF change:  
Average # SV per Epoch:  21.9   6.2   6.1   3.9   5.7  
             
Obs L2 : Obs L1  1.992   1.985   2.000  
Obs B2/E5b : Obs B1/E1  0.719   1.000   0.525  
Obs L5/E5a : Obs L1/E1  0.758   0.605   1.000  

Cycle Slips             
Num cycle slips > 15°: 
% slips per complete obs:  0.004 %  0.004 %  0.005 %  0.009 % 
Num complete obs per slip:  23048   22343   21846   10800  
IOD Slips > 15°:  9763  9763 
Outliers > 15°: 
LLI L1/B1/E1 : Obs L1/B1/E1: 
LLI L2 : Obs L2: 
LLI B2/E5b : Obs B2/E5b: 
LLI L5 : Obs L5: 

Multipath             
MP (L1/E1/B1) RMS:  0.144 m  0.151 m  0.139 m  0.116 m  0.190 m 
MP (L2) RMS:  0.155 m  0.138 m  0.174 m 
MP (L5/E5a) RMS:  0.204 m  0.244 m  0.177 m 
MP (E5b/B2) RMS:  0.204 m  0.170 m  0.271 m 
MP (E5a+b) RMS:  0.047 m  0.047 m 

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 100.0 %
100.0 %
100.0 %
100.0 %
L2P 100.0 %
100.0 %
100.0 %
100.0 %
L2S 98.5 %
98.5 %
98.5 %
98.5 %
L2W 100.0 %
100.0 %
100.0 %
100.0 %
L5Q 75.8 %
75.8 %
75.8 %
75.8 %
L7I 52.5 %
52.5 %
52.5 %
52.5 %
L7Q 100.0 %
100.0 %
100.0 %
100.0 %
L8Q 100.0 %
100.0 %
100.0 %
100.0 %

Tracking by satellite > 15°: 
SV Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
G2 15.00° 16.34° 344 344 (100.0 %)
0 (0.0 %) 0
G12 15.00° 21.09° 1272 1272 (100.0 %)
0 (0.0 %) 0
G18 19.04° 44.98° 3600 3600 (100.0 %)
0 (0.0 %) 0
G25 36.61° 53.51° 3600 3600 (100.0 %)
0 (0.0 %) 0
G26 21.14° 40.86° 3600 3600 (100.0 %)
0 (0.0 %) 1
G29 55.17° 83.76° 3600 3600 (100.0 %)
0 (0.0 %) 0
G31 52.54° 72.87° 3600 3600 (100.0 %)
0 (0.0 %) 0
G32 15.00° 30.80° 2727 2727 (100.0 %)
0 (0.0 %) 0
R13 15.04° 35.77° 3600 3600 (100.0 %)
0 (0.0 %) 0
R14 61.33° 67.16° 3600 3600 (100.0 %)
0 (0.0 %) 0
R15 22.12° 47.91° 3600 3600 (100.0 %)
0 (0.0 %) 0
R17 34.22° 69.21° 3600 3600 (100.0 %)
0 (0.0 %) 0
R18 15.01° 17.79° 352 352 (100.0 %)
0 (0.0 %) 0
R23 15.01° 42.45° 3494 3494 (100.0 %)
0 (0.0 %) 1
R24 52.40° 71.83° 3600 3600 (100.0 %)
0 (0.0 %) 0
E7 15.00° 16.79° 362 362 (100.0 %)
0 (0.0 %) 0
E13 15.00° 28.07° 2103 2103 (100.0 %)
0 (0.0 %) 0
E15 45.23° 67.81° 3600 3600 (100.0 %)
0 (0.0 %) 0
E21 15.00° 18.82° 890 890 (100.0 %)
0 (0.0 %) 0
E27 50.09° 66.27° 3600 3600 (100.0 %)
0 (0.0 %) 0
E30 45.73° 57.25° 3600 3600 (100.0 %)
0 (0.0 %) 0
E36 - - 0 0 (-)
1081 (-) 0
C11 44.49° 71.65° 3600 3600 (100.0 %)
0 (0.0 %) 1
C12 51.53° 71.28° 3600 3600 (100.0 %)
0 (0.0 %) 0
C13 20.48° 22.71° 3600 3600 (100.0 %)
0 (0.0 %) 0
C23 15.00° 29.75° 2566 2566 (100.0 %)
0 (0.0 %) 0
C24 37.36° 58.17° 3600 3600 (100.0 %)
0 (0.0 %) 0
C25 58.14° 83.06° 3600 3600 (100.0 %)
0 (0.0 %) 0

Missing phase observations by satellite > 15°: 
SV Observations Missing L1C Missing L1I Missing L2C Missing L2P Missing L2S Missing L2W Missing L5Q Missing L7I Missing L7Q Missing L8Q
G2 0.4 %
0.0 %
- - - 100.0 %
0.0 %
100.0 %
- - -
G12 1.6 %
0.0 %
- - - 0.0 %
0.0 %
100.0 %
- - -
G18 4.6 %
0.0 %
- - - 0.0 %
0.0 %
0.0 %
- - -
G25 4.6 %
0.0 %
- - - 0.0 %
0.0 %
0.0 %
- - -
G26 4.6 %
0.0 %
- - - 0.0 %
0.0 %
0.0 %
- - -
G29 4.6 %
0.0 %
- - - 0.0 %
0.0 %
100.0 %
- - -
G31 4.6 %
0.0 %
- - - 0.0 %
0.0 %
100.0 %
- - -
G32 3.5 %
0.0 %
- - - 0.0 %
0.0 %
0.0 %
- - -
R13 4.6 %
0.0 %
- 0.0 %
0.0 %
- - - - - -
R14 4.6 %
0.0 %
- 0.0 %
0.0 %
- - - - - -
R15 4.6 %
0.0 %
- 0.0 %
0.0 %
- - - - - -
R17 4.6 %
0.0 %
- 0.0 %
0.0 %
- - - - - -
R18 0.4 %
0.0 %
- 0.0 %
0.0 %
- - - - - -
R23 4.4 %
0.0 %
- 0.0 %
0.0 %
- - - - - -
R24 4.6 %
0.0 %
- 0.0 %
0.0 %
- - - - - -
E7 0.5 %
0.0 %
- - - - - 0.0 %
- 0.0 %
0.0 %
E13 2.7 %
0.0 %
- - - - - 0.0 %
- 0.0 %
0.0 %
E15 4.6 %
0.0 %
- - - - - 0.0 %
- 0.0 %
0.0 %
E21 1.1 %
0.0 %
- - - - - 0.0 %
- 0.0 %
0.0 %
E27 4.6 %
0.0 %
- - - - - 0.0 %
- 0.0 %
0.0 %
E30 4.6 %
0.0 %
- - - - - 0.0 %
- 0.0 %
0.0 %
C11 4.6 %
- 0.0 %
- - - - - 0.0 %
- -
C12 4.6 %
- 0.0 %
- - - - - 0.0 %
- -
C13 4.6 %
- 0.0 %
- - - - - 0.0 %
- -
C23 3.3 %
- 0.0 %
- - - - - 100.0 %
- -
C24 4.6 %
- 0.0 %
- - - - - 100.0 %
- -
C25 4.6 %
- 0.0 %
- - - - - 100.0 %
- -

Missing code observations by satellite > 15°: 
SV Missing C1C Missing C1I Missing C2C Missing C2P Missing C2S Missing C2W Missing C5Q Missing C7I Missing C7Q Missing C8Q
G2 0.0 %
- - - 100.0 %
0.0 %
100.0 %
- - -
G12 0.0 %
- - - 0.0 %
0.0 %
100.0 %
- - -
G18 0.0 %
- - - 0.0 %
0.0 %
0.0 %
- - -
G25 0.0 %
- - - 0.0 %
0.0 %
0.0 %
- - -
G26 0.0 %
- - - 0.0 %
0.0 %
0.0 %
- - -
G29 0.0 %
- - - 0.0 %
0.0 %
100.0 %
- - -
G31 0.0 %
- - - 0.0 %
0.0 %
100.0 %
- - -
G32 0.0 %
- - - 0.0 %
0.0 %
0.0 %
- - -
R13 0.0 %
- 0.0 %
0.0 %
- - - - - -
R14 0.0 %
- 0.0 %
0.0 %
- - - - - -
R15 0.0 %
- 0.0 %
0.0 %
- - - - - -
R17 0.0 %
- 0.0 %
0.0 %
- - - - - -
R18 0.0 %
- 0.0 %
0.0 %
- - - - - -
R23 0.0 %
- 0.0 %
0.0 %
- - - - - -
R24 0.0 %
- 0.0 %
0.0 %
- - - - - -
E7 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 %
E21 0.0 %
- - - - - 0.0 %
- 0.0 %
0.0 %
E27 0.0 %
- - - - - 0.0 %
- 0.0 %
0.0 %
E30 0.0 %
- - - - - 0.0 %
- 0.0 %
0.0 %
C11 - 0.0 %
- - - - - 0.0 %
- -
C12 - 0.0 %
- - - - - 0.0 %
- -
C13 - 0.0 %
- - - - - 0.0 %
- -
C23 - 0.0 %
- - - - - 100.0 %
- -
C24 - 0.0 %
- - - - - 100.0 %
- -
C25 - 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 Observations
85 - 90 0
0
0
0
0
0.0 %
80 - 85 0
0
0
0
0
1.2 %
75 - 80 0
0
0
0
0
1.7 %
70 - 75 0
0
0
0
0
5.2 %
65 - 70 0
0
0
0
0
10.7 %
60 - 65 0
0
0
1
0
9.9 %
55 - 60 0
0
0
0
0
9.5 %
50 - 55 0
0
0
0
0
9.5 %
45 - 50 0
0
0
0
0
6.8 %
40 - 45 0
0
0
0
0
5.4 %
35 - 40 0
0
0
0
0
5.9 %
30 - 35 0
1
0
0
0
5.2 %
25 - 30 0
0
0
0
0
7.6 %
20 - 25 1
0
0
0
0
12.3 %
15 - 20 0
0
0
0
0
9.1 %
10 - 15 0
0
0
0
0
0.0 %
5 - 10 0
0
0
0
0
0.0 %
0 - 5 0
0
0
0
0
0.0 %

Signal to Noise Ratio by satellite > 15°: 
SV L1/E1/B1 L2 L5/E5a E5b/B2 E5a+b
G2 41.5
40.0
- - -
G12 42.5
43.0
- - -
G18 46.8
49.0
52.5
- -
G25 50.2
51.1
55.3
- -
G26 45.2
48.0
52.2
- -
G29 54.3
54.5
- - -
G31 53.6
53.2
- - -
G32 44.9
45.8
48.6
- -
R13 37.3
38.6
- - -
R14 55.2
53.4
- - -
R15 49.8
47.9
- - -
R17 53.1
51.6
- - -
R18 41.5
44.3
- - -
R23 47.9
42.4
- - -
R24 54.8
52.6
- - -
E7 41.2
- 45.4
45.7
48.8
E13 44.2
- 47.0
47.6
50.5
E15 54.0
- 55.7
56.2
59.1
E21 42.1
- 45.4
45.7
48.8
E27 54.4
- 55.9
56.3
59.2
E30 53.9
- 55.0
55.5
58.4
C11 51.7
- - 55.2
-
C12 50.8
- - 56.3
-
C13 40.9
- - 42.5
-
C23 43.5
- - - -
C24 52.2
- - - -
C25 54.9
- - - -
Average GPS: 47.4
48.1
52.2
- -
Average GLONASS: 48.5
47.3
- - -
Average Galileo: 48.3
- 50.8
51.2
54.1
Average BeiDou: 49.0
- - 51.3
-
Average QZSS: - - - - -
Average All: 48.2
47.7
51.3
51.2
54.1

Code multipath by satellite > 15°: 
SV Av Elev MP (L1/E1/B1) MP (L2) MP (L5/E5a) MP (E5b/B2) MP (E5a+b)
G2 15.7 ° 0.26 m
0.37 m
- - -
G12 18.0 ° 0.16 m
0.16 m
- - -
G18 32.0 ° 0.17 m
0.13 m
0.21 m
- -
G25 45.1 ° 0.11 m
0.07 m
0.17 m
- -
G26 31.0 ° 0.12 m
0.12 m
0.28 m
- -
G29 69.5 ° 0.07 m
0.07 m
- - -
G31 62.7 ° 0.09 m
0.07 m
- - -
G32 22.9 ° 0.24 m
0.11 m
0.31 m
- -
R13 25.4 ° 0.22 m
0.24 m
- - -
R14 64.2 ° 0.07 m
0.12 m
- - -
R15 35.0 ° 0.17 m
0.23 m
- - -
R17 51.7 ° 0.11 m
0.17 m
- - -
R18 16.4 ° 0.14 m
0.21 m
- - -
R23 28.7 ° 0.20 m
0.16 m
- - -
R24 62.1 ° 0.06 m
0.09 m
- - -
E7 15.9 ° 0.15 m
- 0.19 m
0.16 m
0.03 m
E13 21.5 ° 0.14 m
- 0.21 m
0.30 m
0.09 m
E15 56.5 ° 0.10 m
- 0.14 m
0.14 m
0.03 m
E21 16.9 ° 0.14 m
- 0.23 m
0.20 m
0.03 m
E27 58.2 ° 0.08 m
- 0.15 m
0.10 m
0.04 m
E30 51.5 ° 0.10 m
- 0.15 m
0.12 m
0.05 m
C11 58.1 ° 0.08 m
- - 0.10 m
-
C12 61.4 ° 0.21 m
- - 0.16 m
-
C13 21.6 ° 0.27 m
- - 0.55 m
-
C23 - - - - - -
C24 - - - - - -
C25 - - - - - -
Average GPS: - 0.15 m
0.14 m
0.24 m
- -
Average GLONASS: - 0.14 m
0.17 m
- - -
Average Galileo: - 0.12 m
- 0.18 m
0.17 m
0.05 m
Average BeiDou: - 0.19 m
- - 0.27 m
-
Average QZSS: - - - - - -
Average All: - 0.14 m
0.15 m
0.20 m
0.20 m
0.05 m

Code multipath by satellite elevation > 15°: 
Elevation MP (L1/E1/B1) MP (L2) MP (L5/E5a) MP (E5b/B2) MP (E5a+b)
85 - 90 - - - - -
80 - 85 0.06 m
0.05 m
- - -
75 - 80 0.05 m
0.05 m
- - -
70 - 75 0.10 m
0.08 m
- 0.22 m
-
65 - 70 0.09 m
0.10 m
0.13 m
0.12 m
0.04 m
60 - 65 0.08 m
0.12 m
0.10 m
0.11 m
0.03 m
55 - 60 0.10 m
0.07 m
0.13 m
0.12 m
0.04 m
50 - 55 0.11 m
0.09 m
0.19 m
0.13 m
0.05 m
45 - 50 0.11 m
0.09 m
0.14 m
0.13 m
0.05 m
40 - 45 0.13 m
0.13 m
0.17 m
0.04 m
-
35 - 40 0.15 m
0.15 m
0.25 m
- -
30 - 35 0.17 m
0.16 m
0.27 m
- -
25 - 30 0.17 m
0.17 m
0.23 m
0.19 m
0.06 m
20 - 25 0.20 m
0.20 m
0.26 m
0.51 m
0.11 m
15 - 20 0.24 m
0.19 m
0.26 m
0.25 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 2020/10/06 01:59:59.00

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 L1 code and phase measurements with a SNR of at least 0 
(#)  A complete Galileo observation contains non-zero E1, E5a, E5b, E5a+b code and phase measurements with a SNR of at least 0 
(#)  A complete BeiDou observation contains non-zero B1, B2 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 
(-)  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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This file was processed using version 7.1.0.7438