Leica SpiderQC v7.5 Quality Report


Program Run: 2021/06/01 09:01:49.33

File Details:


Observation File: algc152i.21o
GPS Navigation File: algc152i.21n
GLONASS Navigation File: algc152i.21g
Galileo Navigation File: algc152i.21l
BeiDou Navigation File: algc152i.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:  -0.2 m dX  -5.0 m dY  1.6 m dZ 
Diff. Est-Header:  5.2 m (3600 estimates) 

Session Summary:


Time of first obs:  2021/06/01 08:00:00.00 GPS 
Time of last obs:  2021/06/01 08:59:59.00 GPS 
Session length:  59.98 minutes 
GPS week:  2160, 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:  41 
Total GLONASS orbits:  43 
Total Galileo orbits:  138 
Total BeiDou orbits:  30 
Total QZSS orbits: 
Total NavIC orbits: 
SVs with obs:  G2 G6 G12 G18 G24 G25 G26 G29 G31 G32 R2 R3 R4 R5 R12 R13 R14 R21 R22 R23 R24 E1 E4 E9 E13 E15 E19 E21 E26 E27 E31 E33 C5 C8 C12 C13 C14 C24 C25 C26 C29  
SVs without obs:  G1 G3 G4 G5 G7 G8 G9 G10 G11 G13 G14 G15 G16 G17 G19 G20 G21 G22 G23 G27 G28 G30 R1 R6 R7 R8 R9 R10 R11 R15 R16 R17 R18 R19 R20 E2 E3 E5 E6 E7 E8 E10 E11 E12 E14 E16 E17 E18 E20 E22 E23 E24 E25 E28 E29 E30 E32 E34 E35 E36 C1 C2 C3 C4 C6 C7 C9 C10 C11 C15 C16 C17 C18 C19 C20 C21 C22 C23 C27 C28 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 1 slips, Threshold 45 slips 
Multipath:  Pass  Value 0.09m MP1 / 0.09m 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 1 slips, Threshold 127 slips 
Multipath:  Pass  Value 0.16m MP1 / 0.16m MP2, Threshold 0.5 m 
Data Completeness:  Pass  Value 100.0 %, Threshold 90.0 % 
Navigation Data:  Pass   
     
Galileo Specific Tests 
Cycle Slips:  Pass  Value 7 slips, Threshold 143 slips 
Multipath:  Pass  Value 0.07m MP1 / 0.13m MP5a / 0.13m MP5b / 0.05m MP5a+b, Threshold 0.5 m 
Data Completeness:  Pass  Value 99.0 %, Threshold 90.0 % 
Navigation Data:  Pass   
     
BeiDou Specific Tests 
Cycle Slips:  Pass  Value 0 slips, Threshold 96 slips 
Multipath:  Pass  Value 0.24m MP1 / 0.25m MP2b, Threshold 0.5 m 
Data Completeness:  Pass  Value 100.0 %, Threshold 90.0 % 
Navigation Data:  Fail   

General Quality Indicators:


Tracking   
Num obs > 0°:  125062 
Num possible obs > 0°:  125011 
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°:  3600  (100.0 %) 
Epochs with full data > 15°:  3372  (93.7 %) 

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 
None   

Receiver Clock 
Clock Slips > 15°: 
Max RX clock offset:  0.000015 ms (at 2021/06/01 08:43:24.00) 
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°:  125062  31543  31679  34653  27187 
Num possible obs > 0°:  125011  31651  32356  35835  25169 
Num obs with invalid nav: 
Num obs without nav:  3600  3600 
Num obs to unhealthy SV: 
               
Tracking over Elevation Mask (15°) 
Num obs > 15°:  83560  22632  21203  23796  15929 
% obs > 15°:   100.0 %  100.0 %  100.0 %  100.0 %  100.0 % 
Num possible obs > 15°:  83560  22632  21203  23796  15929 
Num complete obs > 15°:  83332  22632  21203  23568  15929 
% complete obs > 15°:   99.7 %  100.0 %  100.0 %  99.0 %  100.0 % 
Num obs with WLF change:  
Average # SV per Epoch:  23.2   6.3   5.9   6.6   4.4  
               
Observation ratio w.r.t. L1/E1/B1I: 
Obs L2/B1C:  1.798   1.926   1.660  
Obs E5b/B2I:  0.785   1.010   0.452  
Obs L5/E5a/B2a:  0.739   0.456   1.010  
Obs E5a+b/B2a+b:  1.010   1.010  
Obs L6/E6/B3I/G2a: 
Obs G3: 

Cycle Slips               
Num cycle slips > 15°: 
% slips per complete obs:  0.011 %  0.004 %  0.005 %  0.030 % 
Num complete obs per slip:  9259   22632   21203   3366  
IOD Slips > 15°: 
Outliers > 15°: 
LLI : Obs L1/E1/B1I:  0.0001   0.0003  
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:  0.127 m  0.088 m  0.157 m  0.071 m  0.236 m 
MP (L2/B1C) RMS:  0.126 m  0.095 m  0.161 m 
MP (L5/E5a/B2a) RMS:  0.124 m  0.112 m  0.130 m 
MP (E5b/B2I) RMS:  0.150 m  0.125 m  0.248 m 
MP (E5a+b/B2a+b) RMS:  0.054 m  0.054 m 
MP (L6/E6/B3I/G2a) RMS: 
MP (G3) RMS: 

Extended Quality Information:


Tracking by observation type > 15°: 
Type Code Phase SNR Doppler
L1C 99.7 %
99.7 %
99.7 %
99.7 %
L1I 100.0 %
100.0 %
100.0 %
100.0 %
L2C 83.0 %
83.0 %
83.0 %
83.0 %
L2P 83.0 %
83.0 %
83.0 %
83.0 %
L2S 92.6 %
92.6 %
92.6 %
92.6 %
L2W 100.0 %
100.0 %
100.0 %
100.0 %
L5Q 73.5 %
73.5 %
73.5 %
73.5 %
L7I 45.2 %
45.2 %
45.2 %
45.2 %
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° 19.33° 1674 1674 (100.0 %)
0 (0.0 %) 0
G12 15.00° 32.05° 3433 3433 (100.0 %)
0 (0.0 %) 1
G18 15.00° 25.45° 1536 1536 (100.0 %)
0 (0.0 %) 0
G24 15.00° 15.71° 119 119 (100.0 %)
0 (0.0 %) 0
G25 47.62° 62.54° 3600 3600 (100.0 %)
0 (0.0 %) 0
G26 15.00° 22.44° 1470 1470 (100.0 %)
0 (0.0 %) 0
G29 71.37° 87.53° 3600 3600 (100.0 %)
0 (0.0 %) 0
G31 28.09° 53.51° 3600 3600 (100.0 %)
0 (0.0 %) 0
G32 24.03° 44.12° 3600 3600 (100.0 %)
0 (0.0 %) 0

SV GLONASS Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
R3 15.00° 22.83° 1539 1539 (100.0 %)
0 (0.0 %) 0
R4 15.00° 15.08° 653 653 (100.0 %)
0 (0.0 %) 0
R12 31.51° 46.51° 3600 3600 (100.0 %)
0 (0.0 %) 0
R13 47.08° 63.46° 3600 3600 (100.0 %)
0 (0.0 %) 0
R14 15.00° 26.05° 1809 1809 (100.0 %)
0 (0.0 %) 1
R22 22.57° 46.62° 3600 3600 (100.0 %)
0 (0.0 %) 0
R23 41.80° 74.61° 3600 3600 (100.0 %)
0 (0.0 %) 0
R24 15.00° 40.23° 2802 2802 (100.0 %)
0 (0.0 %) 0

SV Galileo Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
E1 55.94° 65.88° 3600 3600 (100.0 %)
0 (0.0 %) 0
E4 22.54° 34.19° 3600 3600 (100.0 %)
0 (0.0 %) 0
E13 30.36° 36.45° 3600 3600 (100.0 %)
0 (0.0 %) 0
E19 15.00° 24.29° 1668 1668 (100.0 %)
0 (0.0 %) 7
E21 39.70° 51.21° 3600 3600 (100.0 %)
0 (0.0 %) 0
E26 34.16° 54.65° 3600 3600 (100.0 %)
0 (0.0 %) 0
E31 15.00° 24.05° 2423 2423 (100.0 %)
0 (0.0 %) 0
E33 15.01° 25.61° 1705 1705 (100.0 %)
0 (0.0 %) 0

SV BeiDou Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
C8 - - 0 0 (-)
3600 (-) 0
C12 15.04° 40.16° 3600 3600 (100.0 %)
0 (0.0 %) 0
C13 17.64° 21.03° 3600 3600 (100.0 %)
0 (0.0 %) 0
C24 34.64° 56.03° 3600 3600 (100.0 %)
0 (0.0 %) 0
C26 68.17° 74.86° 3600 3600 (100.0 %)
0 (0.0 %) 0
C29 15.00° 23.35° 1529 1529 (100.0 %)
0 (0.0 %) 0

Missing phase observations by satellite > 15°: 
SV GPS Observations Missing L1C Missing L2S Missing L2W Missing L5Q
G2 2.0 %
0.0 %
100.0 %
0.0 %
100.0 %
G12 4.1 %
0.0 %
0.0 %
0.0 %
100.0 %
G18 1.8 %
0.0 %
0.0 %
0.0 %
0.0 %
G24 0.1 %
0.0 %
0.0 %
0.0 %
0.0 %
G25 4.3 %
0.0 %
0.0 %
0.0 %
0.0 %
G26 1.8 %
0.0 %
0.0 %
0.0 %
0.0 %
G29 4.3 %
0.0 %
0.0 %
0.0 %
100.0 %
G31 4.3 %
0.0 %
0.0 %
0.0 %
100.0 %
G32 4.3 %
0.0 %
0.0 %
0.0 %
0.0 %

SV GLONASS Observations Missing L1C Missing L2C Missing L2P
R3 1.8 %
0.0 %
0.0 %
0.0 %
R4 0.8 %
0.0 %
0.0 %
0.0 %
R12 4.3 %
0.0 %
0.0 %
0.0 %
R13 4.3 %
0.0 %
0.0 %
0.0 %
R14 2.2 %
0.0 %
0.0 %
0.0 %
R22 4.3 %
0.0 %
0.0 %
0.0 %
R23 4.3 %
0.0 %
100.0 %
100.0 %
R24 3.4 %
0.0 %
0.0 %
0.0 %

SV Galileo Observations Missing L1C Missing L5Q Missing L7Q Missing L8Q
E1 4.3 %
0.0 %
0.0 %
0.0 %
0.0 %
E4 4.3 %
0.0 %
0.0 %
0.0 %
0.0 %
E13 4.3 %
0.0 %
0.0 %
0.0 %
0.0 %
E19 2.0 %
13.7 %
0.0 %
0.0 %
0.0 %
E21 4.3 %
0.0 %
0.0 %
0.0 %
0.0 %
E26 4.3 %
0.0 %
0.0 %
0.0 %
0.0 %
E31 2.9 %
0.0 %
0.0 %
0.0 %
0.0 %
E33 2.0 %
0.0 %
0.0 %
0.0 %
0.0 %

SV BeiDou Observations Missing L2I Missing L7I
C12 4.3 %
0.0 %
0.0 %
C13 4.3 %
0.0 %
0.0 %
C24 4.3 %
0.0 %
100.0 %
C26 4.3 %
0.0 %
100.0 %
C29 1.8 %
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 %
G12 0.0 %
0.0 %
0.0 %
100.0 %
G18 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 %
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 %

SV GLONASS Missing C1C Missing C2C Missing C2P
R3 0.0 %
0.0 %
0.0 %
R4 0.0 %
0.0 %
0.0 %
R12 0.0 %
0.0 %
0.0 %
R13 0.0 %
0.0 %
0.0 %
R14 0.0 %
0.0 %
0.0 %
R22 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 %
E4 0.0 %
0.0 %
0.0 %
0.0 %
E13 0.0 %
0.0 %
0.0 %
0.0 %
E19 13.7 %
0.0 %
0.0 %
0.0 %
E21 0.0 %
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
C12 0.0 %
0.0 %
C13 0.0 %
0.0 %
C24 0.0 %
100.0 %
C26 0.0 %
100.0 %
C29 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
1.2 %
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
5.1 %
65 - 70 0
0
0
0
0
0
1.6 %
60 - 65 0
0
0
0
0
0
4.8 %
55 - 60 0
0
0
0
0
0
5.3 %
50 - 55 0
0
0
0
0
0
6.3 %
45 - 50 0
0
0
0
0
0
7.7 %
40 - 45 0
0
0
0
0
0
8.8 %
35 - 40 0
0
0
0
0
0
10.0 %
30 - 35 0
0
0
0
0
0
9.7 %
25 - 30 0
0
0
0
0
0
6.8 %
20 - 25 1
1
0
0
0
0
13.2 %
15 - 20 0
0
7
0
0
0
17.0 %
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 40.6
39.4
-
G12 43.0
42.8
-
G18 41.9
45.0
48.6
G24 38.0
42.3
45.8
G25 51.0
51.6
56.1
G26 40.2
43.1
47.4
G29 54.5
55.0
-
G31 48.7
47.5
-
G32 48.7
48.7
51.9
Average GPS: 45.2
46.1
49.9

SV GLONASS G1 G2
R3 43.4
41.2
R4 40.9
40.1
R12 50.3
46.3
R13 42.1
44.3
R14 43.7
41.8
R22 38.0
32.8
R23 53.1
-
R24 46.1
42.5
Average GLONASS: 44.7
41.3

SV Galileo E1 E5a E5b E5a+b
E1 54.0
55.7
55.9
58.9
E4 46.5
49.0
49.0
52.2
E13 47.6
50.1
50.1
53.2
E19 38.6
41.2
41.0
44.2
E21 50.7
52.5
52.7
55.8
E26 50.6
52.5
52.8
55.8
E31 42.3
45.7
45.6
48.8
E33 42.9
46.2
46.1
49.3
Average Galileo: 46.6
49.1
49.2
52.3

SV BeiDou B1I B2I
C12 42.5
47.8
C13 39.0
41.1
C24 50.5
-
C26 53.8
-
C29 42.0
-
Average BeiDou: 45.6
44.5

Code multipath by satellite > 15°: 
SV GPS Av Elev MP (L1) MP (L2) MP (L5)
G2 17.2 ° 0.16 m
0.24 m
-
G12 23.5 ° 0.10 m
0.09 m
-
G18 20.2 ° 0.12 m
0.11 m
0.17 m
G24 - - - -
G25 55.1 ° 0.04 m
0.04 m
0.06 m
G26 18.7 ° 0.09 m
0.09 m
0.14 m
G29 79.5 ° 0.03 m
0.04 m
-
G31 40.8 ° 0.08 m
0.09 m
-
G32 34.1 ° 0.07 m
0.06 m
0.08 m
Average GPS: - 0.09 m
0.09 m
0.11 m

SV GLONASS Av Elev MP (G1) MP (G2)
R3 18.9 ° 0.09 m
0.13 m
R4 15.0 ° 0.49 m
0.35 m
R12 39.0 ° 0.07 m
0.10 m
R13 55.3 ° 0.08 m
0.08 m
R14 20.5 ° 0.13 m
0.22 m
R22 34.6 ° 0.12 m
0.12 m
R23 - - -
R24 27.6 ° 0.12 m
0.13 m
Average GLONASS: - 0.16 m
0.16 m

SV Galileo Av Elev MP (E1) MP (E5a) MP (E5b) MP (E5a+b)
E1 60.9 ° 0.04 m
0.06 m
0.07 m
0.02 m
E4 28.4 ° 0.05 m
0.06 m
0.08 m
0.04 m
E13 33.4 ° 0.07 m
0.19 m
0.15 m
0.02 m
E19 19.6 ° 0.07 m
0.09 m
0.09 m
0.07 m
E21 45.5 ° 0.05 m
0.10 m
0.09 m
0.01 m
E26 44.4 ° 0.06 m
0.12 m
0.10 m
0.05 m
E31 19.5 ° 0.09 m
0.17 m
0.19 m
0.07 m
E33 20.3 ° 0.15 m
0.25 m
0.24 m
0.16 m
Average Galileo: - 0.07 m
0.13 m
0.13 m
0.05 m

SV BeiDou Av Elev MP (B1I) MP (B2I)
C12 27.6 ° 0.11 m
0.14 m
C13 19.3 ° 0.28 m
0.36 m
C24 45.3 ° 0.45 m
-
C26 71.5 ° 0.05 m
-
C29 19.2 ° 0.30 m
-
Average BeiDou: - 0.24 m
0.25 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
- - - - -
80 - 85 0.02 m
0.04 m
- - - - -
75 - 80 0.04 m
0.05 m
- - - - -
70 - 75 0.04 m
0.08 m
- - - - -
65 - 70 0.11 m
- 0.07 m
0.07 m
0.01 m
- -
60 - 65 0.04 m
0.04 m
0.05 m
0.06 m
0.02 m
- -
55 - 60 0.06 m
0.06 m
0.06 m
0.07 m
0.02 m
- -
50 - 55 0.15 m
0.06 m
0.07 m
0.08 m
0.02 m
- -
45 - 50 0.09 m
0.09 m
0.09 m
0.09 m
0.03 m
- -
40 - 45 0.07 m
0.09 m
0.13 m
0.12 m
0.03 m
- -
35 - 40 0.15 m
0.09 m
0.15 m
0.14 m
0.03 m
- -
30 - 35 0.09 m
0.10 m
0.13 m
0.11 m
0.03 m
- -
25 - 30 0.09 m
0.10 m
0.06 m
0.08 m
0.05 m
- -
20 - 25 0.15 m
0.15 m
0.14 m
0.22 m
0.07 m
- -
15 - 20 0.17 m
0.17 m
0.18 m
0.25 m
0.12 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 C8 starting 2021/06/01 08:00:00.00.
- Updated header information or comments after epoch 2021/06/01 08:59:59.00

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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