Leica SpiderQC v7.5 Quality Report


Program Run: 2021/08/04 10:01:52.85

File Details:


Observation File: algc216j.21o
GPS Navigation File: algc216j.21n
GLONASS Navigation File: algc216j.21g
Galileo Navigation File: algc216j.21l
BeiDou Navigation File: algc216j.21f
Quality Testing:  Pass 

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:  2.5 m dX  -6.9 m dY  2.6 m dZ 
Diff. Est-Header:  7.7 m (3600 estimates) 

Session Summary:


Time of first obs:  2021/08/04 09:00:00.00 GPS 
Time of last obs:  2021/08/04 09:59:59.00 GPS 
Session length:  59.98 minutes 
GPS week:  2169, day 3 
Observation interval:  1.00 seconds 
UTC leap seconds:  18 seconds 

Num SVs with obs:  40 
Num SVs with nav:  102 
Total GPS orbits:  36 
Total GLONASS orbits:  42 
Total Galileo orbits:  91 
Total BeiDou orbits:  32 
Total QZSS orbits: 
Total NavIC orbits: 
SVs with obs:  G1 G7 G8 G10 G16 G18 G21 G22 G23 G26 G27 G30 G32 R1 R2 R3 R9 R14 R15 R16 R17 R18 R24 E1 E7 E13 E21 E26 E31 E33 C5 C11 C12 C19 C21 C22 C23 C24 C25 C26  
SVs without obs:  G2 G3 G4 G5 G6 G9 G11 G12 G13 G14 G15 G17 G19 G20 G24 G25 G28 G29 G31 R4 R5 R6 R7 R8 R10 R11 R12 R13 R19 R20 R21 R22 R23 E2 E3 E4 E5 E6 E8 E9 E10 E11 E12 E14 E15 E16 E17 E18 E19 E20 E22 E23 E24 E25 E27 E28 E29 E30 E32 E34 E35 E36 C1 C2 C3 C4 C6 C7 C8 C9 C10 C13 C14 C15 C16 C17 C18 C20 C27 C28 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 2 slips, Threshold 53 slips 
Multipath:  Pass  Value 0.07m MP1 / 0.07m MP2 / 0.12m 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 127 slips 
Multipath:  Pass  Value 0.11m MP1 / 0.15m MP2, Threshold 0.5 m 
Data Completeness:  Pass  Value 100.0 %, Threshold 90.0 % 
Navigation Data:  Pass   
     
Galileo Specific Tests 
Cycle Slips:  Pass  Value 5 slips, Threshold 135 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 100.0 %, Threshold 90.0 % 
Navigation Data:  Pass   
     
BeiDou Specific Tests 
Cycle Slips:  Pass  Value 1 slips, Threshold 131 slips 
Multipath:  Pass  Value 0.26m MP1 / 0.08m MP2b, Threshold 0.5 m 
Data Completeness:  Pass  Value 100.0 %, Threshold 90.0 % 
Navigation Data:  Pass   

General Quality Indicators:


Tracking   
Num obs > 0°:  128201 
Num possible obs > 0°:  131901 
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  2.1  2.5  2.2 
GDOP  2.5  3.1  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:  0.000024 ms (at 2021/08/04 09:40:17.00) 
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°:  128201  40001  31227  23165  33808 
Num possible obs > 0°:  131901  40761  31739  25200  34201 
Num obs with invalid nav: 
Num obs without nav: 
Num obs to unhealthy SV: 
               
Tracking over Elevation Mask (15°) 
Num obs > 15°:  91865  26429  21124  22445  21867 
% obs > 15°:   100.0 %  100.0 %  100.0 %  100.0 %  100.0 % 
Num possible obs > 15°:  91865  26429  21124  22445  21867 
Num complete obs > 15°:  91865  26429  21124  22445  21867 
% complete obs > 15°:   100.0 %  100.0 %  100.0 %  100.0 %  100.0 % 
Num obs with WLF change:  
Average # SV per Epoch:  25.5   7.3   5.9   6.2   6.1  
               
Observation ratio w.r.t. L1/E1/B1I: 
Obs L2/B1C:  1.846   1.722   2.000  
Obs E5b/B2I:  0.669   1.000   0.329  
Obs L5/E5a/B2a:  0.850   0.722   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:  0.009 %  0.008 %  0.022 %  0.005 % 
Num complete obs per slip:  11483   13214   4489   21867  
IOD Slips > 15°: 
Outliers > 15°: 
LLI : Obs L1/E1/B1I:  0.0000   0.0000  
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:  0.126 m  0.067 m  0.105 m  0.074 m  0.258 m 
MP (L2/B1C) RMS:  0.110 m  0.075 m  0.155 m 
MP (L5/E5a/B2a) RMS:  0.127 m  0.121 m  0.132 m 
MP (E5b/B2I) RMS:  0.120 m  0.132 m  0.077 m 
MP (E5a+b/B2a+b) RMS:  0.046 m  0.046 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 100.0 %
100.0 %
100.0 %
100.0 %
L2P 100.0 %
100.0 %
100.0 %
100.0 %
L2S 72.2 %
72.2 %
72.2 %
72.2 %
L2W 100.0 %
100.0 %
100.0 %
100.0 %
L5Q 85.0 %
85.0 %
85.0 %
85.0 %
L7I 32.9 %
32.9 %
32.9 %
32.9 %
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 15.01° 20.93° 1084 1084 (100.0 %)
0 (0.0 %) 0
G8 38.58° 59.36° 3600 3600 (100.0 %)
0 (0.0 %) 0
G10 46.53° 50.87° 3600 3600 (100.0 %)
0 (0.0 %) 0
G16 46.00° 76.46° 3600 3600 (100.0 %)
0 (0.0 %) 1
G21 24.31° 44.69° 3600 3600 (100.0 %)
0 (0.0 %) 0
G22 15.00° 16.03° 145 145 (100.0 %)
0 (0.0 %) 0
G23 17.78° 34.71° 3600 3600 (100.0 %)
0 (0.0 %) 0
G26 15.66° 42.40° 3600 3600 (100.0 %)
0 (0.0 %) 1
G27 62.56° 67.83° 3600 3600 (100.0 %)
0 (0.0 %) 0

SV GLONASS Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
R2 20.50° 31.58° 3600 3600 (100.0 %)
0 (0.0 %) 0
R3 15.01° 29.33° 1959 1959 (100.0 %)
0 (0.0 %) 0
R9 15.01° 21.20° 1165 1165 (100.0 %)
0 (0.0 %) 0
R15 22.49° 54.58° 3600 3600 (100.0 %)
0 (0.0 %) 0
R16 40.02° 46.49° 3600 3600 (100.0 %)
0 (0.0 %) 0
R17 30.41° 47.52° 3600 3600 (100.0 %)
0 (0.0 %) 0
R18 46.06° 51.38° 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 56.72° 69.72° 3600 3600 (100.0 %)
0 (0.0 %) 3
E7 15.00° 18.32° 879 879 (100.0 %)
0 (0.0 %) 0
E13 15.00° 30.61° 3566 3566 (100.0 %)
0 (0.0 %) 2
E21 20.82° 44.28° 3600 3600 (100.0 %)
0 (0.0 %) 0
E26 61.44° 74.42° 3600 3600 (100.0 %)
0 (0.0 %) 0
E31 22.26° 37.84° 3600 3600 (100.0 %)
0 (0.0 %) 0
E33 36.23° 48.99° 3600 3600 (100.0 %)
0 (0.0 %) 0

SV BeiDou Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
C11 18.50° 33.17° 3600 3600 (100.0 %)
0 (0.0 %) 1
C12 59.71° 63.65° 3600 3600 (100.0 %)
0 (0.0 %) 0
C19 15.00° 15.22° 152 152 (100.0 %)
0 (0.0 %) 0
C21 15.00° 36.05° 3407 3407 (100.0 %)
0 (0.0 %) 0
C22 28.93° 36.53° 3600 3600 (100.0 %)
0 (0.0 %) 0
C24 23.29° 44.79° 3600 3600 (100.0 %)
0 (0.0 %) 0
C25 29.30° 31.69° 3600 3600 (100.0 %)
0 (0.0 %) 0
C26 15.00° 16.94° 308 308 (100.0 %)
0 (0.0 %) 0

Missing phase observations by satellite > 15°: 
SV GPS Observations Missing L1C Missing L2S Missing L2W Missing L5Q
G1 1.2 %
0.0 %
0.0 %
0.0 %
0.0 %
G8 3.9 %
0.0 %
0.0 %
0.0 %
0.0 %
G10 3.9 %
0.0 %
0.0 %
0.0 %
0.0 %
G16 3.9 %
0.0 %
100.0 %
0.0 %
100.0 %
G21 3.9 %
0.0 %
100.0 %
0.0 %
100.0 %
G22 0.2 %
0.0 %
100.0 %
0.0 %
100.0 %
G23 3.9 %
0.0 %
0.0 %
0.0 %
0.0 %
G26 3.9 %
0.0 %
0.0 %
0.0 %
0.0 %
G27 3.9 %
0.0 %
0.0 %
0.0 %
0.0 %

SV GLONASS Observations Missing L1C Missing L2C Missing L2P
R2 3.9 %
0.0 %
0.0 %
0.0 %
R3 2.1 %
0.0 %
0.0 %
0.0 %
R9 1.3 %
0.0 %
0.0 %
0.0 %
R15 3.9 %
0.0 %
0.0 %
0.0 %
R16 3.9 %
0.0 %
0.0 %
0.0 %
R17 3.9 %
0.0 %
0.0 %
0.0 %
R18 3.9 %
0.0 %
0.0 %
0.0 %

SV Galileo Observations Missing L1C Missing L5Q Missing L7Q Missing L8Q
E1 3.9 %
0.0 %
0.0 %
0.0 %
0.0 %
E7 1.0 %
0.0 %
0.0 %
0.0 %
0.0 %
E13 3.9 %
0.0 %
0.0 %
0.0 %
0.0 %
E21 3.9 %
0.0 %
0.0 %
0.0 %
0.0 %
E26 3.9 %
0.0 %
0.0 %
0.0 %
0.0 %
E31 3.9 %
0.0 %
0.0 %
0.0 %
0.0 %
E33 3.9 %
0.0 %
0.0 %
0.0 %
0.0 %

SV BeiDou Observations Missing L2I Missing L7I
C11 3.9 %
0.0 %
0.0 %
C12 3.9 %
0.0 %
0.0 %
C19 0.2 %
0.0 %
100.0 %
C21 3.7 %
0.0 %
100.0 %
C22 3.9 %
0.0 %
100.0 %
C24 3.9 %
0.0 %
100.0 %
C25 3.9 %
0.0 %
100.0 %
C26 0.3 %
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 %
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 %
G21 0.0 %
100.0 %
0.0 %
100.0 %
G22 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
R2 0.0 %
0.0 %
0.0 %
R3 0.0 %
0.0 %
0.0 %
R9 0.0 %
0.0 %
0.0 %
R15 0.0 %
0.0 %
0.0 %
R16 0.0 %
0.0 %
0.0 %
R17 0.0 %
0.0 %
0.0 %
R18 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 %
E7 0.0 %
0.0 %
0.0 %
0.0 %
E13 0.0 %
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
C11 0.0 %
0.0 %
C12 0.0 %
0.0 %
C19 0.0 %
100.0 %
C21 0.0 %
100.0 %
C22 0.0 %
100.0 %
C24 0.0 %
100.0 %
C25 0.0 %
100.0 %
C26 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
0.2 %
70 - 75 0
0
0
0
0
0
2.2 %
65 - 70 0
0
3
0
0
0
7.3 %
60 - 65 0
0
0
0
0
0
7.3 %
55 - 60 1
0
0
0
0
0
2.2 %
50 - 55 0
0
0
0
0
0
6.0 %
45 - 50 0
0
0
0
0
0
10.3 %
40 - 45 0
0
0
0
0
0
8.7 %
35 - 40 0
0
0
0
0
0
9.3 %
30 - 35 0
0
0
0
0
0
16.4 %
25 - 30 1
0
0
0
0
0
12.5 %
20 - 25 0
0
1
1
0
0
9.5 %
15 - 20 0
0
1
0
0
0
8.1 %
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 40.0
43.9
48.4
G8 49.9
51.7
54.9
G10 51.7
51.7
54.7
G16 50.8
49.9
-
G21 46.4
44.0
-
G22 39.9
38.1
-
G23 43.4
46.5
49.3
G26 43.3
45.8
49.7
G27 53.2
54.6
57.5
Average GPS: 46.5
47.4
52.4

SV GLONASS G1 G2
R2 46.1
43.7
R3 43.8
43.0
R9 42.1
41.5
R15 49.3
47.2
R16 46.0
43.6
R17 48.8
46.4
R18 51.9
49.3
Average GLONASS: 46.9
45.0

SV Galileo E1 E5a E5b E5a+b
E1 54.0
55.4
55.9
58.9
E7 41.0
44.2
44.6
47.6
E13 42.7
45.9
46.1
49.2
E21 46.7
49.0
49.3
52.4
E26 54.1
55.1
55.7
58.7
E31 45.7
48.4
48.4
51.6
E33 50.0
51.9
52.1
55.2
Average Galileo: 47.7
50.0
50.3
53.4

SV BeiDou B1I B2I
C11 41.0
47.1
C12 50.8
54.6
C19 39.0
-
C21 44.5
-
C22 47.0
-
C24 47.3
-
C25 46.1
-
C26 39.8
-
Average BeiDou: 44.4
50.9

Code multipath by satellite > 15°: 
SV GPS Av Elev MP (L1) MP (L2) MP (L5)
G1 18.0 ° 0.09 m
0.11 m
0.08 m
G8 49.0 ° 0.05 m
0.07 m
0.10 m
G10 48.7 ° 0.04 m
0.05 m
0.12 m
G16 61.2 ° 0.05 m
0.06 m
-
G21 34.5 ° 0.05 m
0.06 m
-
G22 15.5 ° 0.05 m
0.08 m
-
G23 26.2 ° 0.10 m
0.08 m
0.19 m
G26 29.0 ° 0.12 m
0.10 m
0.17 m
G27 65.2 ° 0.03 m
0.04 m
0.07 m
Average GPS: - 0.07 m
0.07 m
0.12 m

SV GLONASS Av Elev MP (G1) MP (G2)
R2 26.0 ° 0.14 m
0.22 m
R3 22.2 ° 0.16 m
0.15 m
R9 18.1 ° 0.20 m
0.28 m
R15 38.5 ° 0.07 m
0.11 m
R16 43.3 ° 0.05 m
0.11 m
R17 39.0 ° 0.08 m
0.11 m
R18 48.7 ° 0.04 m
0.11 m
Average GLONASS: - 0.11 m
0.15 m

SV Galileo Av Elev MP (E1) MP (E5a) MP (E5b) MP (E5a+b)
E1 63.2 ° 0.04 m
0.07 m
0.07 m
0.04 m
E7 16.7 ° 0.12 m
0.24 m
0.25 m
0.04 m
E13 22.8 ° 0.10 m
0.17 m
0.16 m
0.04 m
E21 32.5 ° 0.10 m
0.12 m
0.14 m
0.10 m
E26 67.9 ° 0.02 m
0.07 m
0.06 m
0.02 m
E31 30.0 ° 0.10 m
0.18 m
0.17 m
0.04 m
E33 42.6 ° 0.04 m
0.07 m
0.08 m
0.04 m
Average Galileo: - 0.07 m
0.13 m
0.13 m
0.05 m

SV BeiDou Av Elev MP (B1I) MP (B2I)
C11 25.8 ° 0.07 m
0.11 m
C12 61.7 ° 0.04 m
0.04 m
C19 15.1 ° 0.20 m
-
C21 25.5 ° 0.36 m
-
C22 32.7 ° 0.23 m
-
C24 34.0 ° 0.71 m
-
C25 30.5 ° 0.22 m
-
C26 16.0 ° 0.23 m
-
Average BeiDou: - 0.26 m
0.08 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 0.02 m
0.02 m
- - - - -
70 - 75 0.03 m
0.04 m
0.05 m
0.05 m
0.01 m
- -
65 - 70 0.03 m
0.04 m
0.07 m
0.05 m
0.02 m
- -
60 - 65 0.04 m
0.05 m
0.09 m
0.06 m
0.05 m
- -
55 - 60 0.05 m
0.09 m
0.09 m
0.09 m
0.04 m
- -
50 - 55 0.04 m
0.08 m
0.12 m
- - - -
45 - 50 0.05 m
0.09 m
0.09 m
0.10 m
0.03 m
- -
40 - 45 0.15 m
0.10 m
0.10 m
0.06 m
0.04 m
- -
35 - 40 0.14 m
0.10 m
0.10 m
0.10 m
0.06 m
- -
30 - 35 0.16 m
0.10 m
0.18 m
0.14 m
0.07 m
- -
25 - 30 0.18 m
0.14 m
0.16 m
0.15 m
0.06 m
- -
20 - 25 0.15 m
0.14 m
0.17 m
0.17 m
0.07 m
- -
15 - 20 0.19 m
0.16 m
0.20 m
0.19 m
0.05 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 2021/08/04 09:59:59.00

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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This file was processed using version 7.5.2.8679