Leica SpiderQC v7.8 Quality Report


Program Run: 2024/03/12 15:51:09.77

File Details:


Observation File: clre072p15.24o
GPS Navigation File: clre072p15.24n
GLONASS Navigation File: clre072p15.24g
Galileo Navigation File: clre072p15.24l
BeiDou Navigation File: clre072p15.24f
Quality Testing:  Fail (See below for details) 

Station Details:


Marker Name/Number:  MARINE CITY  49556S001   
Observer/Agency:  Shawn Roy  Michigan DOT   
Receiver #/Type/Vers:  1870875  LEICA GR50  4.80/7.900 
Antenna #/Type:  18274005  LEIAR20 LEIM   
Antenna Offsets (HEN):  0.000  0.000  0.000 
Approx Position (XYZ):  604778.586  -4653802.201  4305122.114 
Approx Position (plh):  42° 43' 25.91607" N  82° 35' 44.51772" W  155.543m 
Diff. Est-Header:  -5.9 m dX  0.8 m dY  0.8 m dZ 
Diff. Est-Header:  6.0 m (479 estimates) 

Session Summary:


Time of first obs:  2024/03/12 15:22:01.00 GPS 
Time of last obs:  2024/03/12 15:29:59.00 GPS 
Session length:  7.97 minutes 
GPS week:  2305, day 2 
Observation interval:  1.00 seconds 
UTC leap seconds:  18 seconds 

Num SVs with obs:  40 
Num SVs with nav:  82 
Total GPS orbits:  37 
Total GLONASS orbits:  31 
Total Galileo orbits:  222 
Total BeiDou orbits:  34 
SVs with obs:  G2 G4 G7 G8 G9 G14 G16 G21 G27 G30 R1 R7 R8 R9 R10 R11 R18 R19 R20 R21 E4 E13 E15 E19 E21 E27 E34 C13 C14 C21 C24 C26 C29 C30 C33 C36 C42 C45 C50 C57  
SVs without obs:  G1 G3 G5 G6 G10 G11 G12 G13 G15 G17 G18 G19 G20 G22 G23 G24 G25 G26 G28 G29 G31 G32 R2 R3 R4 R5 R6 R12 R13 R14 R15 R16 R17 R22 R23 R24 E1 E2 E3 E5 E6 E7 E8 E9 E10 E11 E12 E14 E16 E17 E18 E20 E22 E23 E24 E25 E26 E28 E29 E30 E31 E32 E33 E35 E36 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C15 C16 C17 C18 C19 C20 C22 C23 C25 C27 C28 C31 C32 C34 C35 C37 C38 C39 C40 C41 C43 C44 C46 C47 C48 C49 C51 C52 C53 C54 C55 C56 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 G14 G16 G18 G20 G21 G23 G24 G25 G26 G27 G28 G29 G30 G31 G32 R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R14 R15 R16 R17 R18 R19 R20 R21 R22 R23 R24 E2 E4 E7 E8 E10 E13 E15 E18 E19 E21 E26 E27 E30 E33 E34 C8 C13 C14 C19 C20 C21 C22 C24 C26 C27 C28 C29 C30 C33 C35 C36 C37 C38 C42 C45 C46  
SVs without nav:  G1 G5 G11 G13 G15 G17 G19 G22 R12 R13 E1 E3 E5 E6 E9 E11 E12 E14 E16 E17 E20 E22 E23 E24 E25 E28 E29 E31 E32 E35 E36 C1 C2 C3 C4 C5 C6 C7 C9 C10 C11 C12 C15 C16 C17 C18 C23 C25 C31 C32 C34 C39 C40 C41 C43 C44 C47 C48 C49 C50 C51 C52 C53 C54 C55 C56 C57 C58 C59 C60 C61 C62 C63  
User Disabled SVs:  None 
Meteo epochs: 
Auxiliary epochs: 

Quality Testing:


  Pass/Fail   Details 
General Tests 
Epochs With Data:  Fail  Value 53.2 %, Threshold 99.0 % 
File Format:  Pass   
RX Clock:  Pass   
Other:  Pass   
     
GPS Specific Tests 
Cycle Slips:  Fail  Value 9 slips, Threshold 7 slips 
Multipath:  Pass  Value 0.02m MP1 / 0.05m MP2 / 0.03m MP5, Threshold 0.5 m 
Data Completeness:  Pass  Value 99.8 %, Threshold 95.0 % 
Navigation Data:  Pass   
     
GLONASS Specific Tests 
Cycle Slips:  Pass  Value 7 slips, Threshold 20 slips 
Multipath:  Pass  Value 0.03m MP1 / 0.04m MP2, Threshold 0.5 m 
Data Completeness:  Fail  Value 0.0 %, Threshold 90.0 % 
Navigation Data:  Pass   
     
Galileo Specific Tests 
Cycle Slips:  Pass  Value 6 slips, Threshold 17 slips 
Multipath:  Pass  Value 0.02m MP1 / 0.04m MP5a / 0.03m MP5b / 0.02m 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 7 slips, Threshold 20 slips 
Multipath:  Pass  Value 0.03m MP1 / 0.13m MP2b / 0.06m MP3, Threshold 0.5 m 
Data Completeness:  Fail  Value 0.0 %, Threshold 90.0 % 
Navigation Data:  Pass   

General Quality Indicators:


Tracking   
Num obs > 0°:  17654 
Num possible obs > 0°:  18773 
Num obs with invalid nav: 
Num obs without nav:  505 
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°:  395  (82.5 %) 
Epochs with full data > 15°:  (0.0 %) 

Satellite Geometry 
DOP  Minimum  Maximum  Average 
PDOP  2.4  2.5  2.4 
GDOP  2.9  3.1  3.0 

Data Gaps 
Num epochs with data:  479 
Num epochs without data:  421 
Data Gaps:  7.02 minutes 

List of Data Gaps (-) 
Duration  Start Time  End Time 
7.02 minutes  2024/03/12 15:15:00.00  2024/03/12 15:22:01.00 
Total:  7.02 minutes   

Non-tracked satellites > 15° (^): 
SV  Time (minutes)  Epoch Range  Elevation Range  Azimuth Range 
None   

Receiver Clock 
Clock Slips > 15°: 
Max RX clock offset:  0.000039 ms (at 2024/03/12 15:24:17.00) 
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°:  17654  4788  4346  3285  5235 
Num possible obs > 0°:  18773  4790  4882  3353  5748 
Num obs with invalid nav: 
Num obs without nav:  505  505 
Num obs to unhealthy SV: 
               
Tracking over Elevation Mask (15°) 
Num obs > 15°:  13115  3638  3353  2874  3250 
% obs > 15°:   99.4 %  100.0 %  100.0 %  100.0 %  97.5 % 
Num possible obs > 15°:  13199  3639  3353  2874  3333 
Num complete obs > 15°:  3633  3633 
% complete obs > 15°:   27.5 %  99.8 % 
Num obs with WLF change:  
Average # SV per Epoch:  27.4   7.6   7.0   6.0   6.8  
               
Observation ratio w.r.t. L1/E1/B1I: 
Obs L2/B1C:  1.727   1.738   1.714  
Obs E5b/B2I:  0.534   1.000   0.121  
Obs L5/E5a/B2a:  0.780   0.606   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°:  29 
% slips per complete obs:  0.798 %  0.248 % 
Num complete obs per slip:  125   403  
IOD Slips > 15°: 
Outliers > 15°: 
LLI : Obs L1/E1/B1I:  0.0022   0.0025   0.0021   0.0021   0.0022  
LLI : Obs L2/B1C:  0.0012   0.0014   0.0010  
LLI : Obs E5b/B2I:  0.0021   0.0021   0.0025  
LLI : Obs L5/E5a/B2a:  0.0022   0.0023   0.0021  
LLI : Obs E5a+b/B2a+b:  0.0021   0.0021  
LLI : Obs L6/E6/B3I/G2a:  0.0022   0.0022  
LLI : Obs G3: 

Multipath               
MP (L1/E1/B1I) RMS:  0.023 m  0.019 m  0.028 m  0.019 m  0.028 m 
MP (L2/B1C) RMS:  0.048 m  0.053 m  0.042 m 
MP (L5/E5a/B2a) RMS:  0.036 m  0.031 m  0.039 m 
MP (E5b/B2I) RMS:  0.047 m  0.033 m  0.127 m 
MP (E5a+b/B2a+b) RMS:  0.023 m  0.023 m 
MP (L6/E6/B3I/G2a) RMS:  0.056 m  0.056 m 
MP (G3) RMS: 

Extended Quality Information:


Tracking by observation type > 15°: 
Type Code Phase SNR Doppler
L1C 100.0 %
99.9 %
100.0 %
100.0 %
L1I 100.0 %
99.9 %
100.0 %
100.0 %
L2C 85.7 %
85.7 %
85.7 %
85.7 %
L2P 85.7 %
85.7 %
85.7 %
85.7 %
L2S 73.7 %
73.7 %
73.7 %
73.7 %
L2W 100.0 %
99.9 %
100.0 %
100.0 %
L5Q 77.9 %
77.9 %
77.9 %
77.9 %
L7I 12.2 %
12.1 %
12.2 %
12.2 %
L7Q 100.0 %
100.0 %
100.0 %
100.0 %
L8Q 100.0 %
100.0 %
100.0 %
100.0 %
L6I 100.0 %
99.9 %
100.0 %
100.0 %

Tracking by satellite > 15°: 
SV GPS Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
G4 15.00° 17.05° 286 286 (100.0 %)
0 (0.0 %) 1
G7 60.16° 63.63° 479 479 (100.0 %)
0 (0.0 %) 1
G8 73.96° 74.55° 479 479 (100.0 %)
0 (0.0 %) 1
G9 37.97° 41.14° 479 479 (100.0 %)
0 (0.0 %) 1
G16 19.05° 21.83° 479 479 (100.0 %)
0 (0.0 %) 1
G21 15.78° 18.87° 479 478 (99.8 %)
0 (0.0 %) 2
G27 42.48° 45.64° 479 479 (100.0 %)
0 (0.0 %) 1
G30 27.38° 30.51° 479 479 (100.0 %)
0 (0.0 %) 1

SV GLONASS Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
R1 25.24° 25.83° 479 479 (100.0 %)
0 (0.0 %) 1
R8 27.19° 30.40° 479 479 (100.0 %)
0 (0.0 %) 1
R9 35.37° 37.97° 479 479 (100.0 %)
0 (0.0 %) 1
R10 62.03° 62.37° 479 479 (100.0 %)
0 (0.0 %) 1
R11 25.68° 28.44° 479 479 (100.0 %)
0 (0.0 %) 1
R19 30.95° 32.94° 479 479 (100.0 %)
0 (0.0 %) 1
R20 38.90° 42.66° 479 479 (100.0 %)
0 (0.0 %) 1

SV Galileo Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
E4 25.70° 27.17° 479 479 (100.0 %)
0 (0.0 %) 1
E13 19.12° 21.67° 479 479 (100.0 %)
0 (0.0 %) 1
E15 23.18° 23.84° 479 479 (100.0 %)
0 (0.0 %) 1
E19 46.72° 49.00° 479 479 (100.0 %)
0 (0.0 %) 1
E21 74.19° 74.63° 479 479 (100.0 %)
0 (0.0 %) 1
E27 36.23° 38.43° 479 479 (100.0 %)
0 (0.0 %) 1

SV BeiDou Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
C14 15.55° 15.67° 479 396 (82.7 %)
0 (0.0 %) 1
C26 47.63° 50.41° 479 479 (100.0 %)
0 (0.0 %) 1
C29 51.56° 52.27° 479 479 (100.0 %)
0 (0.0 %) 1
C30 16.45° 18.70° 479 479 (100.0 %)
0 (0.0 %) 1
C36 15.00° 17.25° 459 459 (100.0 %)
0 (0.0 %) 1
C42 19.44° 20.76° 479 479 (100.0 %)
0 (0.0 %) 1
C45 64.85° 67.02° 479 479 (100.0 %)
0 (0.0 %) 1
C50 - - 0 0 (-)
479 (-) 0
C57 - - 0 0 (-)
26 (-) 0

Missing phase observations by satellite > 15°: 
SV GPS Observations Missing L1C Missing L2S Missing L2W Missing L5Q
G4 2.2 %
0.0 %
0.0 %
0.0 %
0.0 %
G7 3.7 %
0.0 %
0.0 %
0.0 %
100.0 %
G8 3.7 %
0.0 %
0.0 %
0.0 %
0.0 %
G9 3.7 %
0.0 %
0.0 %
0.0 %
0.0 %
G16 3.7 %
0.0 %
100.0 %
0.0 %
100.0 %
G21 3.6 %
1.0 %
100.0 %
1.0 %
100.0 %
G27 3.7 %
0.0 %
0.0 %
0.0 %
0.0 %
G30 3.7 %
0.0 %
0.0 %
0.0 %
0.0 %

SV GLONASS Observations Missing L1C Missing L2C Missing L2P
R1 3.7 %
0.0 %
0.0 %
0.0 %
R8 3.7 %
0.0 %
0.0 %
0.0 %
R9 3.7 %
0.0 %
0.0 %
0.0 %
R10 3.7 %
0.0 %
100.0 %
100.0 %
R11 3.7 %
0.0 %
0.0 %
0.0 %
R19 3.7 %
0.0 %
0.0 %
0.0 %
R20 3.7 %
0.0 %
0.0 %
0.0 %

SV Galileo Observations Missing L1C Missing L5Q Missing L7Q Missing L8Q
E4 3.7 %
0.0 %
0.0 %
0.0 %
0.0 %
E13 3.7 %
0.0 %
0.0 %
0.0 %
0.0 %
E15 3.7 %
0.0 %
0.0 %
0.0 %
0.0 %
E19 3.7 %
0.0 %
0.0 %
0.0 %
0.0 %
E21 3.7 %
0.0 %
0.0 %
0.0 %
0.0 %
E27 3.7 %
0.0 %
0.0 %
0.0 %
0.0 %

SV BeiDou Observations Missing L2I Missing L7I Missing L6I
C14 3.0 %
0.8 %
0.8 %
0.8 %
C26 3.7 %
0.0 %
100.0 %
0.0 %
C29 3.7 %
0.0 %
100.0 %
0.0 %
C30 3.7 %
0.0 %
100.0 %
0.0 %
C36 3.5 %
0.0 %
100.0 %
0.0 %
C42 3.7 %
0.0 %
100.0 %
0.0 %
C45 3.7 %
0.0 %
100.0 %
0.0 %

Missing code observations by satellite > 15°: 
SV GPS Missing C1C Missing C2S Missing C2W Missing C5Q
G4 0.0 %
0.0 %
0.0 %
0.0 %
G7 0.0 %
0.0 %
0.0 %
100.0 %
G8 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 %
G21 0.0 %
100.0 %
0.2 %
100.0 %
G27 0.0 %
0.0 %
0.0 %
0.0 %
G30 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 %
R9 0.0 %
0.0 %
0.0 %
R10 0.0 %
100.0 %
100.0 %
R11 0.0 %
0.0 %
0.0 %
R19 0.0 %
0.0 %
0.0 %
R20 0.0 %
0.0 %
0.0 %

SV Galileo Missing C1C Missing C5Q Missing C7Q Missing C8Q
E4 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 %
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 %

SV BeiDou Missing C2I Missing C7I Missing C6I
C14 0.0 %
0.3 %
0.3 %
C26 0.0 %
100.0 %
0.0 %
C29 0.0 %
100.0 %
0.0 %
C30 0.0 %
100.0 %
0.0 %
C36 0.0 %
100.0 %
0.0 %
C42 0.0 %
100.0 %
0.0 %
C45 0.0 %
100.0 %
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
0.0 %
80 - 85 0
0
0
0
0
0
0.0 %
75 - 80 0
0
0
0
0
0
0.0 %
70 - 75 1
0
1
0
0
0
7.3 %
65 - 70 0
0
0
1
0
0
3.4 %
60 - 65 1
1
0
0
0
0
7.5 %
55 - 60 0
0
0
0
0
0
0.0 %
50 - 55 0
0
0
1
0
0
4.2 %
45 - 50 1
0
1
1
0
0
7.5 %
40 - 45 1
0
0
0
0
0
6.8 %
35 - 40 0
2
1
0
0
0
10.7 %
30 - 35 0
2
0
0
0
0
4.7 %
25 - 30 1
2
1
0
0
0
17.2 %
20 - 25 1
0
1
1
0
0
10.6 %
15 - 20 3
0
1
3
0
0
20.0 %
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
G4 36.7
42.0
44.8
G7 49.0
51.0
-
G8 51.9
53.4
57.7
G9 44.3
47.1
51.6
G16 38.7
37.4
-
G21 38.3
36.6
-
G27 46.7
48.9
53.9
G30 42.4
44.0
49.9
Average GPS: 43.5
45.1
51.6

SV GLONASS G1 G2
R1 40.5
38.2
R8 40.5
43.6
R9 45.8
45.8
R10 46.5
-
R11 43.8
44.1
R19 35.3
42.5
R20 37.0
38.8
Average GLONASS: 41.3
42.2

SV Galileo E1 E5a E5b E5a+b
E4 43.1
46.3
47.8
50.0
E13 40.7
45.5
45.6
48.5
E15 41.7
46.6
46.4
49.4
E19 44.2
47.2
48.0
50.5
E21 52.3
55.6
56.6
59.0
E27 46.4
50.1
50.4
53.2
Average Galileo: 44.8
48.6
49.1
51.8

SV BeiDou B1I B2I B3I
C14 36.0
44.8
41.3
C26 48.5
- 49.8
C29 49.6
- 49.8
C30 40.8
- 42.2
C36 38.5
- 42.9
C42 40.3
- 43.4
C45 51.2
- 53.2
Average BeiDou: 43.6
44.8
46.1

Code multipath by satellite > 15°: 
SV GPS Av Elev MP (L1) MP (L2) MP (L5)
G4 16.0 ° 0.02 m
0.02 m
0.05 m
G7 61.9 ° 0.01 m
0.01 m
-
G8 74.3 ° 0.01 m
0.02 m
0.01 m
G9 39.6 ° 0.01 m
0.02 m
0.03 m
G16 20.4 ° 0.01 m
0.04 m
-
G21 17.3 ° 0.08 m
0.30 m
-
G27 44.1 ° 0.01 m
0.01 m
0.02 m
G30 28.9 ° 0.01 m
0.02 m
0.05 m
Average GPS: - 0.02 m
0.05 m
0.03 m

SV GLONASS Av Elev MP (G1) MP (G2)
R1 25.5 ° 0.05 m
0.04 m
R8 28.8 ° 0.02 m
0.03 m
R9 36.7 ° 0.02 m
0.06 m
R10 - - -
R11 27.1 ° 0.02 m
0.01 m
R19 31.9 ° 0.04 m
0.06 m
R20 40.8 ° 0.02 m
0.05 m
Average GLONASS: - 0.03 m
0.04 m

SV Galileo Av Elev MP (E1) MP (E5a) MP (E5b) MP (E5a+b)
E4 26.4 ° 0.03 m
0.08 m
0.06 m
0.02 m
E13 20.4 ° 0.02 m
0.05 m
0.05 m
0.03 m
E15 23.5 ° 0.02 m
0.03 m
0.04 m
0.03 m
E19 47.9 ° 0.01 m
0.01 m
0.02 m
0.01 m
E21 74.4 ° 0.01 m
0.03 m
0.01 m
0.01 m
E27 37.3 ° 0.01 m
0.03 m
0.02 m
0.04 m
Average Galileo: - 0.02 m
0.04 m
0.03 m
0.02 m

SV BeiDou Av Elev MP (B1I) MP (B2I) MP (B3I)
C14 15.6 ° 0.09 m
0.13 m
0.22 m
C26 49.0 ° 0.01 m
- 0.02 m
C29 51.9 ° 0.03 m
- 0.02 m
C30 17.6 ° 0.02 m
- 0.03 m
C36 16.1 ° 0.02 m
- 0.07 m
C42 20.1 ° 0.01 m
- 0.01 m
C45 65.9 ° 0.03 m
- 0.01 m
Average BeiDou: - 0.03 m
0.13 m
0.06 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 - - - - - - -
70 - 75 0.01 m
0.02 m
0.02 m
0.01 m
0.01 m
- -
65 - 70 0.03 m
- - - - 0.01 m
-
60 - 65 0.01 m
0.01 m
- - - - -
55 - 60 - - - - - - -
50 - 55 0.03 m
- - - - 0.02 m
-
45 - 50 0.01 m
0.01 m
0.01 m
0.02 m
0.01 m
0.02 m
-
40 - 45 0.01 m
0.03 m
0.02 m
- - - -
35 - 40 0.02 m
0.04 m
0.03 m
0.02 m
0.04 m
- -
30 - 35 0.04 m
0.06 m
- - - - -
25 - 30 0.03 m
0.02 m
0.07 m
0.06 m
0.02 m
- -
20 - 25 0.02 m
0.04 m
0.04 m
0.05 m
0.03 m
0.01 m
-
15 - 20 0.04 m
0.19 m
0.05 m
0.11 m
0.04 m
0.10 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 15:29:59.00

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  
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