Leica SpiderQC v7.8 Quality Report


Program Run: 2024/03/12 12:59:06.92

File Details:


Observation File: wrun072m30.24o
GPS Navigation File: wrun072m30.24n
GLONASS Navigation File: wrun072m30.24g
Galileo Navigation File: wrun072m30.24l
BeiDou Navigation File: wrun072m30.24f
Quality Testing:  Fail (See below for details) 

Station Details:


Marker Name/Number:  WILLOW RUN  WRUN   
Observer/Agency:  Shawn Roy  Michigan DOT   
Receiver #/Type/Vers:  1870858  LEICA GR50  4.70/7.813 
Antenna #/Type:  20031024  LEIAR20 LEIM   
Antenna Offsets (HEN):  0.000  0.000  0.000 
Approx Position (XYZ):  531992.713  -4699635.110  4265072.839 
Approx Position (plh):  42° 14' 5.14932" N  83° 32' 30.05727" W  187.722m 
Diff. Est-Header:  -6.1 m dX  1.6 m dY  -0.5 m dZ 
Diff. Est-Header:  6.3 m (900 estimates) 

Session Summary:


Time of first obs:  2024/03/12 12:30:00.00 GPS 
Time of last obs:  2024/03/12 12:44:59.00 GPS 
Session length:  14.98 minutes 
GPS week:  2305, day 2 
Observation interval:  1.00 seconds 
UTC leap seconds:  18 seconds 

Num SVs with obs:  35 
Num SVs with nav:  78 
Total GPS orbits:  49 
Total GLONASS orbits:  33 
Total Galileo orbits:  223 
Total BeiDou orbits:  28 
SVs with obs:  G3 G4 G7 G8 G9 G16 G26 G27 G28 G29 G31 R5 R6 R7 R8 R9 R10 R15 R16 R17 R18 E7 E19 E21 E27 E30 C19 C21 C22 C27 C29 C30 C36 C45 C46  
SVs without obs:  G1 G2 G5 G6 G10 G11 G12 G13 G14 G15 G17 G18 G19 G20 G21 G22 G23 G24 G25 G30 G32 R1 R2 R3 R4 R11 R12 R13 R14 R19 R20 R21 R22 R23 R24 E1 E2 E3 E4 E5 E6 E8 E9 E10 E11 E12 E13 E14 E15 E16 E17 E18 E20 E22 E23 E24 E25 E26 E28 E29 E31 E32 E33 E34 E35 E36 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 C16 C17 C18 C20 C23 C24 C25 C26 C28 C31 C32 C33 C34 C35 C37 C38 C39 C40 C41 C42 C43 C44 C47 C48 C49 C50 C51 C52 C53 C54 C55 C56 C57 C58 C59 C60 C61 C62 C63 J1 J2 J3 J4 J5 J6 J7 J8 J9 J10 I1 I2 I3 I4 I5 I6 I7 I8 I9  
SVs with nav:  G2 G3 G4 G6 G7 G8 G9 G10 G12 G15 G16 G18 G21 G23 G24 G25 G26 G27 G28 G29 G31 G32 R2 R3 R4 R5 R6 R7 R8 R9 R10 R12 R13 R14 R15 R16 R17 R18 R19 R20 R21 R22 R23 R24 E2 E3 E7 E8 E10 E13 E15 E19 E21 E24 E25 E26 E27 E30 E33 C12 C19 C20 C21 C22 C23 C27 C28 C29 C30 C32 C35 C36 C37 C40 C42 C44 C45 C46  
SVs without nav:  G1 G5 G11 G13 G14 G17 G19 G20 G22 G30 R1 R11 E1 E4 E5 E6 E9 E11 E12 E14 E16 E17 E18 E20 E22 E23 E28 E29 E31 E32 E34 E35 E36 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C13 C14 C15 C16 C17 C18 C24 C25 C26 C31 C33 C34 C38 C39 C41 C43 C47 C48 C49 C50 C51 C52 C53 C54 C55 C56 C57 C58 C59 C60 C61 C62 C63  
User Disabled SVs:  None 
Meteo epochs:  0 
Auxiliary epochs:  0 

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 0 slips, Threshold 13 slips 
Multipath:  Pass  Value 0.02m MP1 / 0.04m MP2 / 0.02m 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 27 slips 
Multipath:  Pass  Value 0.01m MP1 / 0.01m MP2, Threshold 0.5 m 
Data Completeness:  Fail  Value 0.0 %, Threshold 90.0 % 
Navigation Data:  Pass   
     
Galileo Specific Tests 
Cycle Slips:  Pass  Value 0 slips, Threshold 27 slips 
Multipath:  Pass  Value 0.01m MP1 / 0.02m MP5a / 0.02m MP5b / 0.01m MP5a+b, Threshold 0.5 m 
Data Completeness:  Fail  Value 0.0 %, Threshold 90.0 % 
Navigation Data:  Pass   
     
BeiDou Specific Tests 
Cycle Slips:  Pass  Value 0 slips, Threshold 36 slips 
Multipath:  Pass  Value 0.01m MP1 / 0.02m MP3, Threshold 0.5 m 
Data Completeness:  Fail  Value 0.0 %, Threshold 90.0 % 
Navigation Data:  Pass   

General Quality Indicators:


Tracking   
Num obs > 0°:  29931 
Num possible obs > 0°:  31043 
Num obs with invalid nav:  0 
Num obs without nav:  0 
Num obs to unhealthy SV:  0 
Num obs with WLF change:  0 
Num complete loss of lock:  0 

Epochs with < 5 SV > 15°:  0  (0.0 %) 
Epochs with all SV > 15°:  900  (100.0 %) 
Epochs with full data > 15°:  0  (0.0 %) 

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

Data Gaps 
Num epochs with data:  900 
Num epochs without data:  0 
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°:  0 
Max RX clock offset:  0.000004 ms (at 2024/03/12 12:44:07.00) 
Num of RX clock resets:  0 
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°:  29931  9277  8465  4500  7689  -  - 
Num possible obs > 0°:  31043  9900  8670  4500  7973  -  - 
Num obs with invalid nav:  -  -  -  -  -  -  - 
Num obs without nav:  -  -  -  -  -  -  - 
Num obs to unhealthy SV:  -  -  -  -  -  -  - 
               
Tracking over Elevation Mask (15°) 
Num obs > 15°:  21408  6533  4446  4500  5929  -  - 
% obs > 15°:   100.0 %  100.0 %  100.0 %  100.0 %  100.0 %  -  - 
Num possible obs > 15°:  21408  6533  4446  4500  5929  -  - 
Num complete obs > 15°:  6533  6533  -  -  -  -  - 
% complete obs > 15°:   30.5 %  100.0 %  -  -  -  -  - 
Num obs with WLF change:   -  -  -  -  -  -  - 
Average # SV per Epoch:  23.8   7.3   4.9   5.0   6.6   -  - 
               
Observation ratio w.r.t. L1/E1/B1I: 
Obs L2/B1C:  1.600   1.862   1.215   -  -  -  - 
Obs E5b/B2I:  1.000   -  -  1.000   -  -  - 
Obs L5/E5a/B2a:  0.837   0.724   -  1.000   -  -  - 
Obs E5a+b/B2a+b:  1.000   -  -  1.000   -  -  - 
Obs L6/E6/B3I/G2a:  1.000   -  -  -  1.000   -  - 
Obs G3:  -  -  -  -  -  -  - 

Cycle Slips               
Num cycle slips > 15°:  -  -  -  -  -  -  - 
% slips per complete obs:  -  -  -  -  -  -  - 
Num complete obs per slip:  -  -  -  -  -  -  - 
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:  0.015 m  0.023 m  0.007 m  0.009 m  0.013 m  -  - 
MP (L2/B1C) RMS:  0.029 m  0.036 m  0.009 m  -  -  -  - 
MP (L5/E5a/B2a) RMS:  0.020 m  0.023 m  -  0.017 m  -  -  - 
MP (E5b/B2I) RMS:  0.017 m  -  -  0.017 m  -  -  - 
MP (E5a+b/B2a+b) RMS:  0.011 m  -  -  0.011 m  -  -  - 
MP (L6/E6/B3I/G2a) RMS:  0.024 m  -  -  -  0.024 m  -  - 
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 60.7 %
60.7 %
60.7 %
60.7 %
L2P 60.7 %
60.7 %
60.7 %
60.7 %
L2S 86.2 %
86.2 %
86.2 %
86.2 %
L2W 100.0 %
100.0 %
100.0 %
100.0 %
L5Q 83.7 %
83.7 %
83.7 %
83.7 %
L7Q 100.0 %
100.0 %
100.0 %
100.0 %
L8Q 100.0 %
100.0 %
100.0 %
100.0 %
L6I 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
G3 23.09° 28.78° 900 900 (100.0 %)
0 (0.0 %) 0
G4 68.68° 74.34° 900 900 (100.0 %)
0 (0.0 %) 0
G9 25.41° 31.48° 900 900 (100.0 %)
0 (0.0 %) 0
G16 78.61° 84.25° 900 900 (100.0 %)
0 (0.0 %) 0
G26 53.26° 59.89° 900 900 (100.0 %)
0 (0.0 %) 0
G27 21.45° 27.73° 900 900 (100.0 %)
0 (0.0 %) 0
G28 15.00° 16.24° 233 233 (100.0 %)
0 (0.0 %) 0
G31 36.13° 41.27° 900 900 (100.0 %)
0 (0.0 %) 0

SV GLONASS Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
R6 52.47° 61.35° 900 900 (100.0 %)
0 (0.0 %) 0
R7 52.83° 58.58° 900 900 (100.0 %)
0 (0.0 %) 0
R9 55.45° 59.80° 900 900 (100.0 %)
0 (0.0 %) 0
R10 15.00° 20.12° 846 846 (100.0 %)
0 (0.0 %) 0
R16 45.93° 52.58° 900 900 (100.0 %)
0 (0.0 %) 0

SV Galileo Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
E7 39.72° 45.21° 900 900 (100.0 %)
0 (0.0 %) 0
E19 29.31° 34.12° 900 900 (100.0 %)
0 (0.0 %) 0
E21 28.79° 33.84° 900 900 (100.0 %)
0 (0.0 %) 0
E27 82.09° 87.04° 900 900 (100.0 %)
0 (0.0 %) 0
E30 34.33° 39.21° 900 900 (100.0 %)
0 (0.0 %) 0

SV BeiDou Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
C19 15.01° 19.72° 696 696 (100.0 %)
0 (0.0 %) 0
C21 36.82° 40.13° 900 900 (100.0 %)
0 (0.0 %) 0
C22 51.12° 56.63° 900 900 (100.0 %)
0 (0.0 %) 0
C30 15.00° 18.20° 733 733 (100.0 %)
0 (0.0 %) 0
C36 65.61° 70.84° 900 900 (100.0 %)
0 (0.0 %) 0
C45 47.36° 52.07° 900 900 (100.0 %)
0 (0.0 %) 0
C46 17.40° 22.11° 900 900 (100.0 %)
0 (0.0 %) 0

Missing phase observations by satellite > 15°: 
SV GPS Observations Missing L1C Missing L2S Missing L2W Missing L5Q
G3 4.2 %
0.0 %
0.0 %
0.0 %
0.0 %
G4 4.2 %
0.0 %
0.0 %
0.0 %
0.0 %
G9 4.2 %
0.0 %
0.0 %
0.0 %
0.0 %
G16 4.2 %
0.0 %
100.0 %
0.0 %
100.0 %
G26 4.2 %
0.0 %
0.0 %
0.0 %
0.0 %
G27 4.2 %
0.0 %
0.0 %
0.0 %
0.0 %
G28 1.1 %
0.0 %
0.0 %
0.0 %
0.0 %
G31 4.2 %
0.0 %
0.0 %
0.0 %
100.0 %

SV GLONASS Observations Missing L1C Missing L2C Missing L2P
R6 4.2 %
0.0 %
100.0 %
100.0 %
R7 4.2 %
0.0 %
0.0 %
0.0 %
R9 4.2 %
0.0 %
0.0 %
0.0 %
R10 4.0 %
0.0 %
100.0 %
100.0 %
R16 4.2 %
0.0 %
0.0 %
0.0 %

SV Galileo Observations Missing L1C Missing L5Q Missing L7Q Missing L8Q
E7 4.2 %
0.0 %
0.0 %
0.0 %
0.0 %
E19 4.2 %
0.0 %
0.0 %
0.0 %
0.0 %
E21 4.2 %
0.0 %
0.0 %
0.0 %
0.0 %
E27 4.2 %
0.0 %
0.0 %
0.0 %
0.0 %
E30 4.2 %
0.0 %
0.0 %
0.0 %
0.0 %

SV BeiDou Observations Missing L2I Missing L6I
C19 3.3 %
0.0 %
0.0 %
C21 4.2 %
0.0 %
0.0 %
C22 4.2 %
0.0 %
0.0 %
C30 3.4 %
0.0 %
0.0 %
C36 4.2 %
0.0 %
0.0 %
C45 4.2 %
0.0 %
0.0 %
C46 4.2 %
0.0 %
0.0 %

Missing code observations by satellite > 15°: 
SV GPS Missing C1C Missing C2S Missing C2W Missing C5Q
G3 0.0 %
0.0 %
0.0 %
0.0 %
G4 0.0 %
0.0 %
0.0 %
0.0 %
G9 0.0 %
0.0 %
0.0 %
0.0 %
G16 0.0 %
100.0 %
0.0 %
100.0 %
G26 0.0 %
0.0 %
0.0 %
0.0 %
G27 0.0 %
0.0 %
0.0 %
0.0 %
G28 0.0 %
0.0 %
0.0 %
0.0 %
G31 0.0 %
0.0 %
0.0 %
100.0 %

SV GLONASS Missing C1C Missing C2C Missing C2P
R6 0.0 %
100.0 %
100.0 %
R7 0.0 %
0.0 %
0.0 %
R9 0.0 %
0.0 %
0.0 %
R10 0.0 %
100.0 %
100.0 %
R16 0.0 %
0.0 %
0.0 %

SV Galileo Missing C1C Missing C5Q Missing C7Q Missing C8Q
E7 0.0 %
0.0 %
0.0 %
0.0 %
E19 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 %

SV BeiDou Missing C2I Missing C6I
C19 0.0 %
0.0 %
C21 0.0 %
0.0 %
C22 0.0 %
0.0 %
C30 0.0 %
0.0 %
C36 0.0 %
0.0 %
C45 0.0 %
0.0 %
C46 0.0 %
0.0 %

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
2.0 %
80 - 85 0
0
0
0
0
0
5.6 %
75 - 80 0
0
0
0
0
0
0.8 %
70 - 75 0
0
0
0
0
0
4.0 %
65 - 70 0
0
0
0
0
0
4.4 %
60 - 65 0
0
0
0
0
0
0.6 %
55 - 60 0
0
0
0
0
0
13.7 %
50 - 55 0
0
0
0
0
0
10.2 %
45 - 50 0
0
0
0
0
0
5.1 %
40 - 45 0
0
0
0
0
0
5.1 %
35 - 40 0
0
0
0
0
0
11.0 %
30 - 35 0
0
0
0
0
0
8.4 %
25 - 30 0
0
0
0
0
0
9.4 %
20 - 25 0
0
0
0
0
0
5.8 %
15 - 20 0
0
0
0
0
0
14.0 %
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
G3 43.6
44.6
50.0
G4 52.2
56.1
59.1
G9 44.0
45.4
51.0
G16 51.8
51.8
-
G26 51.8
51.8
57.3
G27 43.5
45.1
50.5
G28 39.7
43.4
46.8
G31 48.6
47.8
-
Average GPS: 46.9
48.3
52.4

SV GLONASS G1 G2
R6 42.6
-
R7 53.1
50.8
R9 53.6
52.0
R10 37.3
-
R16 52.6
49.6
Average GLONASS: 47.8
50.8

SV Galileo E1 E5a E5b E5a+b
E7 50.5
52.6
53.2
56.1
E19 42.9
44.5
45.2
48.1
E21 46.9
49.6
50.3
53.1
E27 55.1
56.8
57.8
60.5
E30 48.8
51.0
51.6
54.5
Average Galileo: 48.8
50.9
51.6
54.5

SV BeiDou B1I B3I
C19 41.1
43.0
C21 48.8
48.7
C22 53.0
52.1
C30 41.3
41.6
C36 53.4
53.7
C45 51.1
51.6
C46 41.1
42.8
Average BeiDou: 47.1
47.7

Code multipath by satellite > 15°: 
SV GPS Av Elev MP (L1) MP (L2) MP (L5)
G3 25.9 ° 0.02 m
0.04 m
0.03 m
G4 71.5 ° 0.02 m
0.04 m
0.02 m
G9 28.4 ° 0.02 m
0.04 m
0.02 m
G16 81.4 ° 0.01 m
0.03 m
-
G26 56.6 ° 0.02 m
0.04 m
0.01 m
G27 24.6 ° 0.02 m
0.04 m
0.03 m
G28 15.6 ° 0.04 m
0.04 m
0.02 m
G31 38.7 ° 0.01 m
0.01 m
-
Average GPS: - 0.02 m
0.04 m
0.02 m

SV GLONASS Av Elev MP (G1) MP (G2)
R6 - - -
R7 55.7 ° 0.01 m
0.01 m
R9 57.6 ° 0.01 m
0.01 m
R10 - - -
R16 49.3 ° 0.01 m
0.01 m
Average GLONASS: - 0.01 m
0.01 m

SV Galileo Av Elev MP (E1) MP (E5a) MP (E5b) MP (E5a+b)
E7 42.5 ° 0.01 m
0.01 m
0.01 m
0.01 m
E19 31.7 ° 0.01 m
0.02 m
0.03 m
0.01 m
E21 31.3 ° 0.01 m
0.02 m
0.02 m
0.01 m
E27 84.6 ° 0.01 m
0.02 m
0.01 m
0.01 m
E30 36.8 ° 0.01 m
0.01 m
0.01 m
0.01 m
Average Galileo: - 0.01 m
0.02 m
0.02 m
0.01 m

SV BeiDou Av Elev MP (B1I) MP (B3I)
C19 17.4 ° 0.01 m
0.04 m
C21 38.5 ° 0.01 m
0.02 m
C22 53.9 ° 0.01 m
0.01 m
C30 16.6 ° 0.02 m
0.04 m
C36 68.2 ° 0.01 m
0.02 m
C45 49.7 ° 0.02 m
0.01 m
C46 19.8 ° 0.02 m
0.04 m
Average BeiDou: - 0.01 m
0.02 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 0.01 m
- 0.02 m
0.01 m
0.01 m
- -
80 - 85 0.01 m
0.03 m
0.02 m
0.01 m
0.01 m
- -
75 - 80 0.01 m
0.04 m
- - - - -
70 - 75 0.02 m
0.04 m
0.02 m
- - 0.01 m
-
65 - 70 0.01 m
0.04 m
0.03 m
- - 0.02 m
-
60 - 65 - - - - - - -
55 - 60 0.01 m
0.02 m
0.01 m
- - 0.01 m
-
50 - 55 0.01 m
0.01 m
0.01 m
- - 0.01 m
-
45 - 50 0.01 m
0.01 m
- - - 0.01 m
-
40 - 45 0.01 m
0.01 m
0.01 m
0.01 m
0.01 m
- -
35 - 40 0.01 m
0.01 m
0.01 m
0.02 m
0.01 m
0.02 m
-
30 - 35 0.01 m
0.04 m
0.02 m
0.02 m
0.01 m
- -
25 - 30 0.02 m
0.04 m
0.03 m
0.02 m
0.02 m
- -
20 - 25 0.02 m
0.04 m
0.03 m
- - 0.04 m
-
15 - 20 0.02 m
0.04 m
0.02 m
- - 0.04 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 2024/03/12 12:44:59.00

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, L2 code and phase measurements with a SNR of at least 0 
(#)  A complete GLONASS observation contains non-zero G1, G2, G2a code and phase measurements with a SNR of at least 0 
(#)  A complete Galileo observation contains non-zero E1, E5a, E5b, E5a+b, E6 code and phase measurements with a SNR of at least 0 
(#)  A complete BeiDou observation contains non-zero B1I, B1C, B2a, B2I, B2a+b code and phase measurements with a SNR of at least 0 
(#)  A complete QZSS observation contains non-zero code and phase measurements with a SNR of at least 0 
(#)  A complete NavIC observation contains non-zero 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  
-  It took 0.5 seconds to process this file 
-  This file was processed using version 7.8.0.9445