Leica SpiderQC v7.5 Quality Report


Program Run: 2021/06/08 13:02:11.51

File Details:


Observation File: algc159m.21o
GPS Navigation File: algc159m.21n
GLONASS Navigation File: algc159m.21g
Galileo Navigation File: algc159m.21l
BeiDou Navigation File: algc159m.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:  5.2 m dX  -4.8 m dY  5.5 m dZ 
Diff. Est-Header:  9.0 m (3600 estimates) 

Session Summary:


Time of first obs:  2021/06/08 12:00:00.00 GPS 
Time of last obs:  2021/06/08 12:59:59.00 GPS 
Session length:  59.98 minutes 
GPS week:  2161, day 2 
Observation interval:  1.00 seconds 
UTC leap seconds:  18 seconds 

Num SVs with obs:  41 
Num SVs with nav:  102 
Total GPS orbits:  43 
Total GLONASS orbits:  43 
Total Galileo orbits:  89 
Total BeiDou orbits:  32 
Total QZSS orbits: 
Total NavIC orbits: 
SVs with obs:  G1 G7 G8 G10 G16 G18 G21 G23 G26 G27 G31 R1 R2 R7 R8 R13 R14 R15 R17 R18 R23 R24 E1 E7 E12 E13 E21 E24 E26 E31 E33 C5 C11 C12 C13 C21 C22 C23 C24 C25 C28  
SVs without obs:  G2 G3 G4 G5 G6 G9 G11 G12 G13 G14 G15 G17 G19 G20 G22 G24 G25 G28 G29 G30 G32 R3 R4 R5 R6 R9 R10 R11 R12 R16 R19 R20 R21 R22 E2 E3 E4 E5 E6 E8 E9 E10 E11 E14 E15 E16 E17 E18 E19 E20 E22 E23 E25 E27 E28 E29 E30 E32 E34 E35 E36 C1 C2 C3 C4 C6 C7 C8 C9 C10 C14 C15 C16 C17 C18 C19 C20 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 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 24 slips, Threshold 53 slips 
Multipath:  Pass  Value 0.08m MP1 / 0.07m MP2 / 0.13m MP5, Threshold 0.5 m 
Data Completeness:  Pass  Value 99.8 %, Threshold 95.0 % 
Navigation Data:  Pass   
     
GLONASS Specific Tests 
Cycle Slips:  Pass  Value 11 slips, Threshold 138 slips 
Multipath:  Pass  Value 0.25m MP1 / 0.20m MP2, Threshold 0.5 m 
Data Completeness:  Pass  Value 99.8 %, Threshold 90.0 % 
Navigation Data:  Pass   
     
Galileo Specific Tests 
Cycle Slips:  Pass  Value 10 slips, Threshold 115 slips 
Multipath:  Pass  Value 0.09m MP1 / 0.13m MP5a / 0.12m MP5b / 0.05m MP5a+b, Threshold 0.5 m 
Data Completeness:  Pass  Value 96.5 %, Threshold 90.0 % 
Navigation Data:  Pass   
     
BeiDou Specific Tests 
Cycle Slips:  Pass  Value 0 slips, Threshold 121 slips 
Multipath:  Fail  Value 0.54m MP1 / 0.09m MP2b, Threshold 0.5 m 
Data Completeness:  Pass  Value 100.0 %, Threshold 90.0 % 
Navigation Data:  Fail   

General Quality Indicators:


Tracking   
Num obs > 0°:  119964 
Num possible obs > 0°:  125167 
Num obs with invalid nav: 
Num obs without nav:  3596 
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°:  2978  (82.7 %) 
Epochs with full data > 15°:  2871  (79.8 %) 

Satellite Geometry 
DOP  Minimum  Maximum  Average 
PDOP  2.1  2.3  2.2 
GDOP  2.6  2.9  2.7 

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 
E12  9.983  335 / 934  15.00° / 17.70°  234.47° / 237.30° 
Total:  9.983 (598 observations) 

Receiver Clock 
Clock Slips > 15°: 
Max RX clock offset:  0.000049 ms (at 2021/06/08 12:50:05.00) 
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°:  119964  34829  31469  23953  29713 
Num possible obs > 0°:  125167  35481  33081  29028  27577 
Num obs with invalid nav: 
Num obs without nav:  3596  3596 
Num obs to unhealthy SV: 
               
Tracking over Elevation Mask (15°) 
Num obs > 15°:  88986  26621  23072  19154  20139 
% obs > 15°:   99.3 %  100.0 %  99.9 %  97.0 %  100.0 % 
Num possible obs > 15°:  89610  26621  23096  19754  20139 
Num complete obs > 15°:  88813  26567  23044  19063  20139 
% complete obs > 15°:   99.1 %  99.8 %  99.8 %  96.5 %  100.0 % 
Num obs with WLF change:  
Average # SV per Epoch:  24.7   7.4   6.4   5.3   5.6  
               
Observation ratio w.r.t. L1/E1/B1I: 
Obs L2/B1C:  1.752   1.794   1.704  
Obs E5b/B2I:  0.672   1.005   0.358  
Obs L5/E5a/B2a:  0.882   0.795   1.005  
Obs E5a+b/B2a+b:  1.005   1.005  
Obs L6/E6/B3I/G2a: 
Obs G3: 

Cycle Slips               
Num cycle slips > 15°:  45  24  11  10 
% slips per complete obs:  0.051 %  0.090 %  0.048 %  0.052 % 
Num complete obs per slip:  1973   1106   2094   1906  
IOD Slips > 15°: 
Outliers > 15°: 
LLI : Obs L1/E1/B1I:  0.0002   0.0003   0.0003   0.0002  
LLI : Obs L2/B1C:  0.0002   0.0002   0.0001  
LLI : Obs E5b/B2I:  0.0000   0.0001  
LLI : Obs L5/E5a/B2a:  0.0000   0.0001  
LLI : Obs E5a+b/B2a+b:  0.0001   0.0001  
LLI : Obs L6/E6/B3I/G2a: 
LLI : Obs G3: 

Multipath               
MP (L1/E1/B1I) RMS:  0.224 m  0.082 m  0.249 m  0.090 m  0.543 m 
MP (L2/B1C) RMS:  0.130 m  0.069 m  0.199 m 
MP (L5/E5a/B2a) RMS:  0.131 m  0.134 m  0.129 m 
MP (E5b/B2I) RMS:  0.116 m  0.123 m  0.092 m 
MP (E5a+b/B2a+b) RMS:  0.047 m  0.047 m 
MP (L6/E6/B3I/G2a) RMS: 
MP (G3) RMS: 

Extended Quality Information:


Tracking by observation type > 15°: 
Type Code Phase SNR Doppler
L1C 99.8 %
99.8 %
99.8 %
99.8 %
L1I 100.0 %
100.0 %
100.0 %
100.0 %
L2C 85.1 %
85.1 %
85.1 %
85.1 %
L2P 85.1 %
85.1 %
85.1 %
85.1 %
L2S 79.2 %
79.2 %
79.2 %
79.2 %
L2W 99.9 %
99.8 %
99.9 %
99.9 %
L5Q 88.0 %
88.0 %
88.0 %
88.0 %
L7I 35.8 %
35.8 %
35.8 %
35.8 %
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
G8 21.02° 39.61° 3600 3600 (100.0 %)
0 (0.0 %) 1
G10 32.68° 49.48° 3600 3600 (100.0 %)
0 (0.0 %) 1
G16 71.44° 89.47° 3600 3600 (100.0 %)
0 (0.0 %) 0
G18 15.01° 35.64° 3112 3112 (100.0 %)
0 (0.0 %) 19
G21 15.00° 26.76° 1909 1909 (100.0 %)
0 (0.0 %) 0
G23 33.60° 37.68° 3600 3600 (100.0 %)
0 (0.0 %) 1
G26 41.60° 70.42° 3600 3600 (100.0 %)
0 (0.0 %) 2
G27 49.78° 64.11° 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° 24.64° 2057 2051 (99.7 %)
0 (0.0 %) 3
R8 15.00° 15.05° 541 541 (100.0 %)
0 (0.0 %) 0
R13 15.00° 38.67° 2649 2649 (100.0 %)
0 (0.0 %) 2
R14 50.41° 70.52° 3600 3600 (100.0 %)
0 (0.0 %) 1
R15 23.08° 46.22° 3600 3600 (100.0 %)
0 (0.0 %) 0
R17 31.42° 45.67° 3600 3600 (100.0 %)
0 (0.0 %) 0
R23 15.00° 35.50° 3449 3431 (99.5 %)
0 (0.0 %) 5
R24 45.91° 62.63° 3600 3600 (100.0 %)
0 (0.0 %) 0

SV Galileo Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
E1 47.94° 73.39° 3600 3600 (100.0 %)
0 (0.0 %) 2
E12 17.71° 29.00° 3266 2666 (81.6 %)
0 (0.0 %) 6
E21 15.00° 23.29° 1478 1478 (100.0 %)
0 (0.0 %) 0
E24 15.00° 18.02° 610 610 (100.0 %)
0 (0.0 %) 1
E26 39.64° 59.40° 3600 3600 (100.0 %)
0 (0.0 %) 1
E31 46.55° 62.08° 3600 3600 (100.0 %)
0 (0.0 %) 0
E33 64.21° 72.10° 3600 3600 (100.0 %)
0 (0.0 %) 0

SV BeiDou Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
C5 - - 0 0 (-)
3596 (-) 0
C11 58.14° 63.90° 3600 3600 (100.0 %)
0 (0.0 %) 0
C12 34.54° 51.66° 3600 3600 (100.0 %)
0 (0.0 %) 0
C21 16.47° 30.02° 3600 3600 (100.0 %)
0 (0.0 %) 0
C23 26.05° 36.56° 3600 3600 (100.0 %)
0 (0.0 %) 0
C24 15.01° 29.39° 2139 2139 (100.0 %)
0 (0.0 %) 0
C25 39.17° 56.75° 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
G8 4.0 %
0.0 %
0.0 %
0.0 %
0.0 %
G10 4.0 %
0.0 %
0.0 %
0.0 %
0.0 %
G16 4.0 %
0.0 %
100.0 %
0.0 %
100.0 %
G18 3.5 %
1.7 %
0.8 %
1.7 %
0.0 %
G21 2.1 %
0.0 %
100.0 %
0.0 %
100.0 %
G23 4.0 %
0.0 %
0.0 %
0.0 %
0.0 %
G26 4.0 %
0.0 %
0.0 %
0.0 %
0.0 %
G27 4.0 %
0.0 %
0.0 %
0.0 %
0.0 %

SV GLONASS Observations Missing L1C Missing L2C Missing L2P
R1 2.3 %
0.3 %
0.3 %
0.3 %
R8 0.6 %
0.0 %
0.0 %
0.0 %
R13 3.0 %
0.2 %
0.0 %
0.0 %
R14 4.0 %
0.0 %
0.0 %
0.0 %
R15 4.0 %
0.0 %
0.0 %
0.0 %
R17 4.0 %
0.0 %
0.0 %
0.0 %
R23 3.9 %
0.5 %
100.0 %
100.0 %
R24 4.0 %
0.0 %
0.0 %
0.0 %

SV Galileo Observations Missing L1C Missing L5Q Missing L7Q Missing L8Q
E1 4.0 %
0.0 %
0.0 %
0.0 %
0.0 %
E12 3.0 %
0.1 %
0.0 %
0.1 %
0.1 %
E21 1.7 %
0.0 %
0.0 %
0.0 %
0.0 %
E24 0.7 %
14.4 %
0.0 %
0.0 %
0.0 %
E26 4.0 %
0.0 %
0.0 %
0.0 %
0.0 %
E31 4.0 %
0.0 %
0.0 %
0.0 %
0.0 %
E33 4.0 %
0.0 %
0.0 %
0.0 %
0.0 %

SV BeiDou Observations Missing L2I Missing L7I
C11 4.0 %
0.0 %
0.0 %
C12 4.0 %
0.0 %
0.0 %
C21 4.0 %
0.0 %
100.0 %
C23 4.0 %
0.0 %
100.0 %
C24 2.4 %
0.0 %
100.0 %
C25 4.0 %
0.0 %
100.0 %

Missing code observations by satellite > 15°: 
SV GPS Missing C1C Missing C2S Missing C2W Missing C5Q
G8 0.0 %
0.0 %
0.0 %
0.0 %
G10 0.0 %
0.0 %
0.0 %
0.0 %
G16 0.0 %
100.0 %
0.0 %
100.0 %
G18 0.7 %
0.8 %
0.8 %
0.0 %
G21 0.0 %
100.0 %
0.0 %
100.0 %
G23 0.0 %
0.0 %
0.0 %
0.0 %
G26 0.0 %
0.0 %
0.0 %
0.0 %
G27 0.0 %
0.0 %
0.0 %
0.0 %

SV GLONASS Missing C1C Missing C2C Missing C2P
R1 0.0 %
0.0 %
0.0 %
R8 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 %
R23 0.0 %
100.0 %
100.0 %
R24 0.0 %
0.0 %
0.0 %

SV Galileo Missing C1C Missing C5Q Missing C7Q Missing C8Q
E1 0.0 %
0.0 %
0.0 %
0.0 %
E12 0.1 %
0.0 %
0.1 %
0.1 %
E21 0.0 %
0.0 %
0.0 %
0.0 %
E24 14.4 %
0.0 %
0.0 %
0.0 %
E26 0.0 %
0.0 %
0.0 %
0.0 %
E31 0.0 %
0.0 %
0.0 %
0.0 %
E33 0.0 %
0.0 %
0.0 %
0.0 %

SV BeiDou Missing C2I Missing C7I
C11 0.0 %
0.0 %
C12 0.0 %
0.0 %
C21 0.0 %
100.0 %
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 Cycle Slips NavIC Observations
85 - 90 0
0
0
0
0
0
1.3 %
80 - 85 0
0
0
0
0
0
1.3 %
75 - 80 0
0
0
0
0
0
0.9 %
70 - 75 0
0
0
0
0
0
4.2 %
65 - 70 0
1
0
0
0
0
4.3 %
60 - 65 0
0
0
0
0
0
8.7 %
55 - 60 0
0
0
0
0
0
8.4 %
50 - 55 0
0
2
0
0
0
8.2 %
45 - 50 3
0
0
0
0
0
8.0 %
40 - 45 0
0
1
0
0
0
7.5 %
35 - 40 2
0
0
0
0
0
10.9 %
30 - 35 0
0
0
0
0
0
7.9 %
25 - 30 0
0
0
0
0
0
9.2 %
20 - 25 0
3
1
0
0
0
10.0 %
15 - 20 19
7
6
0
0
0
9.2 %
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
G8 44.7
47.4
51.3
G10 49.9
50.1
52.7
G16 51.0
51.0
-
G18 42.6
46.0
49.3
G21 41.5
39.5
-
G23 46.9
48.9
52.2
G26 50.8
52.1
55.6
G27 52.3
53.6
56.6
Average GPS: 47.5
48.6
53.0

SV GLONASS G1 G2
R1 39.6
36.4
R8 39.7
39.6
R13 34.9
38.6
R14 53.7
49.8
R15 48.7
46.0
R17 49.5
47.0
R23 44.1
-
R24 52.4
48.3
Average GLONASS: 45.3
43.7

SV Galileo E1 E5a E5b E5a+b
E1 53.2
54.7
54.8
58.0
E12 40.4
43.8
43.6
47.0
E21 42.1
44.7
44.9
48.1
E24 41.4
44.2
44.3
47.5
E26 51.3
52.5
52.8
56.0
E31 52.2
53.9
53.9
57.2
E33 54.3
55.5
55.8
58.9
Average Galileo: 47.8
49.9
50.0
53.3

SV BeiDou B1I B2I
C11 51.4
54.1
C12 46.2
50.9
C21 43.5
-
C23 46.5
-
C24 43.1
-
C25 50.8
-
Average BeiDou: 46.9
52.5

Code multipath by satellite > 15°: 
SV GPS Av Elev MP (L1) MP (L2) MP (L5)
G8 30.3 ° 0.09 m
0.07 m
0.12 m
G10 41.1 ° 0.09 m
0.08 m
0.16 m
G16 80.5 ° 0.05 m
0.05 m
-
G18 25.3 ° 0.08 m
0.05 m
0.13 m
G21 20.9 ° 0.10 m
0.10 m
-
G23 35.6 ° 0.12 m
0.07 m
0.20 m
G26 56.0 ° 0.08 m
0.08 m
0.13 m
G27 56.9 ° 0.04 m
0.05 m
0.06 m
Average GPS: - 0.08 m
0.07 m
0.13 m

SV GLONASS Av Elev MP (G1) MP (G2)
R1 19.8 ° 0.27 m
0.29 m
R8 15.0 ° 1.06 m
0.59 m
R13 26.8 ° 0.15 m
0.13 m
R14 60.5 ° 0.05 m
0.06 m
R15 34.7 ° 0.09 m
0.15 m
R17 38.5 ° 0.06 m
0.10 m
R23 - - -
R24 54.3 ° 0.05 m
0.07 m
Average GLONASS: - 0.25 m
0.20 m

SV Galileo Av Elev MP (E1) MP (E5a) MP (E5b) MP (E5a+b)
E1 60.7 ° 0.05 m
0.12 m
0.10 m
0.06 m
E12 23.4 ° 0.07 m
0.09 m
0.08 m
0.05 m
E21 19.1 ° 0.13 m
0.21 m
0.23 m
0.09 m
E24 16.5 ° 0.29 m
0.27 m
0.24 m
0.07 m
E26 49.5 ° 0.02 m
0.07 m
0.07 m
0.02 m
E31 54.3 ° 0.04 m
0.10 m
0.10 m
0.02 m
E33 68.2 ° 0.02 m
0.05 m
0.05 m
0.02 m
Average Galileo: - 0.09 m
0.13 m
0.12 m
0.05 m

SV BeiDou Av Elev MP (B1I) MP (B2I)
C11 61.0 ° 0.05 m
0.06 m
C12 43.1 ° 0.08 m
0.12 m
C21 23.2 ° 0.95 m
-
C23 31.3 ° 0.17 m
-
C24 22.2 ° 1.31 m
-
C25 48.0 ° 0.69 m
-
Average BeiDou: - 0.54 m
0.09 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 0.04 m
0.03 m
- - - - -
80 - 85 0.05 m
0.04 m
- - - - -
75 - 80 0.06 m
0.06 m
- - - - -
70 - 75 0.02 m
0.05 m
0.05 m
0.04 m
0.02 m
- -
65 - 70 0.05 m
0.06 m
0.07 m
0.06 m
0.02 m
- -
60 - 65 0.05 m
0.05 m
0.08 m
0.07 m
0.04 m
- -
55 - 60 0.13 m
0.07 m
0.08 m
0.10 m
0.03 m
- -
50 - 55 0.13 m
0.06 m
0.10 m
0.07 m
0.03 m
- -
45 - 50 0.11 m
0.09 m
0.14 m
0.11 m
0.03 m
- -
40 - 45 0.18 m
0.11 m
0.15 m
0.08 m
0.04 m
- -
35 - 40 0.10 m
0.08 m
0.17 m
0.19 m
- - -
30 - 35 0.11 m
0.10 m
0.15 m
- - - -
25 - 30 0.43 m
0.11 m
0.10 m
0.09 m
0.05 m
- -
20 - 25 0.23 m
0.14 m
0.12 m
0.14 m
0.06 m
- -
15 - 20 0.60 m
0.22 m
0.19 m
0.18 m
0.07 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:


- Orbit missing or expired for SV C5 starting 2021/06/08 12:00:00.00.
- Updated header information or comments after epoch 2021/06/08 12:59:59.00

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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