Leica SpiderQC v7.8 Quality Report


Program Run: 2024/03/13 10:26:59.28

File Details:


Observation File: miiw073k00.24o
GPS Navigation File: miiw073k00.24n
GLONASS Navigation File: miiw073k00.24g
Galileo Navigation File: miiw073k00.24l
BeiDou Navigation File: miiw073k00.24f
Quality Testing:  Fail (See below for details) 

Station Details:


Marker Name/Number:  IRONWOOD  MIIW   
Observer/Agency:  Shawn Roy  Michigan DOT   
Receiver #/Type/Vers:  1871100  LEICA GR50  4.60/7.811 
Antenna #/Type:  18274017  LEIAR20 LEIM   
Antenna Offsets (HEN):  0.000  0.000  0.000 
Approx Position (XYZ):  -12728.184  -4400842.554  4601707.196 
Approx Position (plh):  46° 28' 12.86537" N  90° 09' 56.56053" W  420.085m 
Diff. Est-Header:  -5.9 m dX  0.7 m dY  1.2 m dZ 
Diff. Est-Header:  6.1 m (900 estimates) 

Session Summary:


Time of first obs:  2024/03/13 10:00:00.00 GPS 
Time of last obs:  2024/03/13 10:14:59.00 GPS 
Session length:  14.98 minutes 
GPS week:  2305, day 3 
Observation interval:  1.00 seconds 
UTC leap seconds:  18 seconds 

Num SVs with obs:  33 
Num SVs with nav:  87 
Total GPS orbits:  54 
Total GLONASS orbits:  31 
Total Galileo orbits:  270 
Total BeiDou orbits:  37 
SVs with obs:  G2 G3 G4 G10 G12 G21 G25 G26 G28 G31 G32 R5 R6 R7 R9 R15 R16 R23 R24 E2 E3 E5 E8 E13 E24 E25 E31 C19 C20 C23 C32 C37 C46  
SVs without obs:  G1 G5 G6 G7 G8 G9 G11 G13 G14 G15 G16 G17 G18 G19 G20 G22 G23 G24 G27 G29 G30 R1 R2 R3 R4 R8 R10 R11 R12 R13 R14 R17 R18 R19 R20 R21 R22 E1 E4 E6 E7 E9 E10 E11 E12 E14 E15 E16 E17 E18 E19 E20 E21 E22 E23 E26 E27 E28 E29 E30 E32 E33 E34 E35 E36 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 C16 C17 C18 C21 C22 C24 C25 C26 C27 C28 C29 C30 C31 C33 C34 C35 C36 C38 C39 C40 C41 C42 C43 C44 C45 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 G5 G7 G8 G10 G11 G12 G13 G15 G16 G17 G18 G20 G21 G22 G23 G24 G25 G26 G27 G28 G29 G30 G31 G32 R2 R3 R4 R5 R6 R7 R9 R10 R11 R12 R13 R14 R15 R16 R17 R18 R19 R20 R21 R22 R23 R24 E2 E3 E4 E5 E8 E9 E10 E11 E12 E13 E15 E19 E21 E24 E25 E31 E34 C14 C19 C20 C23 C24 C25 C26 C27 C28 C29 C30 C32 C33 C35 C37 C40 C41 C42 C44 C46 C58  
SVs without nav:  G1 G6 G9 G14 G19 R1 R8 E1 E6 E7 E14 E16 E17 E18 E20 E22 E23 E26 E27 E28 E29 E30 E32 E33 E35 E36 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C15 C16 C17 C18 C21 C22 C31 C34 C36 C38 C39 C43 C45 C47 C48 C49 C50 C51 C52 C53 C54 C55 C56 C57 C59 C60 C61 C62 C63  
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 8 slips, Threshold 12 slips 
Multipath:  Pass  Value 0.04m MP1 / 0.06m MP2 / 0.06m MP5, Threshold 0.5 m 
Data Completeness:  Fail  Value 94.2 %, Threshold 95.0 % 
Navigation Data:  Pass   
     
GLONASS Specific Tests 
Cycle Slips:  Pass  Value 0 slips, Threshold 27 slips 
Multipath:  Pass  Value 0.02m 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 2 slips, Threshold 31 slips 
Multipath:  Pass  Value 0.08m MP1 / 0.08m MP5a / 0.13m MP5b / 0.07m 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 32 slips 
Multipath:  Pass  Value 0.05m MP1 / 0.05m MP3, Threshold 0.5 m 
Data Completeness:  Fail  Value 0.0 %, Threshold 90.0 % 
Navigation Data:  Pass   

General Quality Indicators:


Tracking   
Num obs > 0°:  25100 
Num possible obs > 0°:  34772 
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°:  (0.0 %) 
Epochs with full data > 15°:  (0.0 %) 

Satellite Geometry 
DOP  Minimum  Maximum  Average 
PDOP  2.5  2.7  2.6 
GDOP  3.0  3.3  3.1 

Data Gaps 
Num epochs with data:  900 
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 
E8  3.550  1 / 214  17.34° / 18.32°  288.53° / 289.32° 
G4  5.733  1 / 345  16.18° / 18.22°  287.87° / 289.22° 
E15  14.983  1 / 900  21.87° / 17.57°  256.69° / 252.55° 
Total:  24.267 (1456 observations) 

Receiver Clock 
Clock Slips > 15°: 
Max RX clock offset:  0.000006 ms (at 2024/03/13 10:11:31.00) 
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°:  25100  6869  6632  6199  5400 
Num possible obs > 0°:  34772  10999  8907  9466  5400 
Num obs with invalid nav: 
Num obs without nav: 
Num obs to unhealthy SV: 
               
Tracking over Elevation Mask (15°) 
Num obs > 15°:  21057  5945  4526  5186  5400 
% obs > 15°:   93.5 %  94.4 %  100.0 %  82.3 %  100.0 % 
Num possible obs > 15°:  22526  6300  4526  6300  5400 
Num complete obs > 15°:  5937  5937 
% complete obs > 15°:   26.4 %  94.2 % 
Num obs with WLF change:  
Average # SV per Epoch:  23.4   6.6   5.0   5.8   6.0  
               
Observation ratio w.r.t. L1/E1/B1I: 
Obs L2/B1C:  1.828   2.001   1.602  
Obs E5b/B2I:  1.000   1.000  
Obs L5/E5a/B2a:  0.920   0.850   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°:  10 
% slips per complete obs:  0.168 %  0.135 % 
Num complete obs per slip:  593   742  
IOD Slips > 15°: 
Outliers > 15°: 
LLI : Obs L1/E1/B1I:  0.0002   0.0007   0.0002  
LLI : Obs L2/B1C:  0.0002   0.0003  
LLI : Obs E5b/B2I:  0.0002   0.0002  
LLI : Obs L5/E5a/B2a:  0.0002   0.0002   0.0002  
LLI : Obs E5a+b/B2a+b:  0.0002   0.0002  
LLI : Obs L6/E6/B3I/G2a: 
LLI : Obs G3: 

Multipath               
MP (L1/E1/B1I) RMS:  0.050 m  0.038 m  0.022 m  0.082 m  0.050 m 
MP (L2/B1C) RMS:  0.050 m  0.055 m  0.041 m 
MP (L5/E5a/B2a) RMS:  0.068 m  0.061 m  0.076 m 
MP (E5b/B2I) RMS:  0.126 m  0.126 m 
MP (E5a+b/B2a+b) RMS:  0.068 m  0.068 m 
MP (L6/E6/B3I/G2a) RMS:  0.053 m  0.053 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 %
100.0 %
100.0 %
100.0 %
L2C 80.1 %
80.1 %
80.1 %
80.1 %
L2P 80.1 %
80.1 %
80.1 %
80.1 %
L2S 99.9 %
99.9 %
99.9 %
99.9 %
L2W 99.9 %
99.8 %
99.9 %
99.9 %
L5Q 91.9 %
91.9 %
91.9 %
91.9 %
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 44.19° 49.17° 900 900 (100.0 %)
0 (0.0 %) 0
G4 18.22° 21.56° 900 545 (60.6 %)
0 (0.0 %) 8
G25 21.63° 26.13° 900 900 (100.0 %)
0 (0.0 %) 0
G26 32.75° 39.67° 900 900 (100.0 %)
0 (0.0 %) 0
G28 63.16° 70.07° 900 900 (100.0 %)
0 (0.0 %) 0
G31 77.77° 84.79° 900 900 (100.0 %)
0 (0.0 %) 0
G32 31.52° 37.19° 900 900 (100.0 %)
0 (0.0 %) 0

SV GLONASS Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
R5 15.00° 15.58° 87 87 (100.0 %)
0 (0.0 %) 0
R6 71.76° 76.14° 900 900 (100.0 %)
0 (0.0 %) 0
R7 41.50° 48.84° 900 900 (100.0 %)
0 (0.0 %) 0
R9 40.29° 48.78° 900 900 (100.0 %)
0 (0.0 %) 0
R15 15.00° 21.46° 839 839 (100.0 %)
0 (0.0 %) 0
R16 66.30° 71.31° 900 900 (100.0 %)
0 (0.0 %) 0

SV Galileo Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
E3 67.22° 71.97° 900 900 (100.0 %)
0 (0.0 %) 0
E5 49.48° 53.85° 900 900 (100.0 %)
0 (0.0 %) 0
E8 18.32° 21.53° 900 686 (76.2 %)
0 (0.0 %) 2
E13 18.45° 18.78° 900 900 (100.0 %)
0 (0.0 %) 0
E15 - - 900 0 (0.0 %)
0 (0.0 %) 0
E24 42.60° 43.61° 900 900 (100.0 %)
0 (0.0 %) 0
E25 39.35° 45.03° 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 36.46° 42.17° 900 900 (100.0 %)
0 (0.0 %) 0
C20 82.13° 86.57° 900 900 (100.0 %)
0 (0.0 %) 0
C23 21.45° 26.73° 900 900 (100.0 %)
0 (0.0 %) 0
C32 26.28° 32.05° 900 900 (100.0 %)
0 (0.0 %) 0
C37 70.81° 72.22° 900 900 (100.0 %)
0 (0.0 %) 0
C46 35.62° 42.06° 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 4.3 %
0.0 %
0.0 %
0.0 %
0.0 %
G4 2.6 %
1.5 %
0.6 %
1.8 %
0.2 %
G25 4.3 %
0.0 %
0.0 %
0.0 %
0.0 %
G26 4.3 %
0.0 %
0.0 %
0.0 %
0.0 %
G28 4.3 %
0.0 %
0.0 %
0.0 %
0.0 %
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
R5 0.4 %
0.0 %
0.0 %
0.0 %
R6 4.3 %
0.0 %
100.0 %
100.0 %
R7 4.3 %
0.0 %
0.0 %
0.0 %
R9 4.3 %
0.0 %
0.0 %
0.0 %
R15 4.0 %
0.0 %
0.0 %
0.0 %
R16 4.3 %
0.0 %
0.0 %
0.0 %

SV Galileo Observations Missing L1C Missing L5Q Missing L7Q Missing L8Q
E3 4.3 %
0.0 %
0.0 %
0.0 %
0.0 %
E5 4.3 %
0.0 %
0.0 %
0.0 %
0.0 %
E8 3.3 %
0.0 %
0.3 %
0.3 %
0.3 %
E13 4.3 %
0.0 %
0.0 %
0.0 %
0.0 %
E24 4.3 %
0.0 %
0.0 %
0.0 %
0.0 %
E25 4.3 %
0.0 %
0.0 %
0.0 %
0.0 %

SV BeiDou Observations Missing L2I Missing L6I
C19 4.3 %
0.0 %
0.0 %
C20 4.3 %
0.0 %
0.0 %
C23 4.3 %
0.0 %
0.0 %
C32 4.3 %
0.0 %
0.0 %
C37 4.3 %
0.0 %
0.0 %
C46 4.3 %
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 %
0.6 %
1.1 %
0.2 %
G25 0.0 %
0.0 %
0.0 %
0.0 %
G26 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 %
G32 0.0 %
0.0 %
0.0 %
0.0 %

SV GLONASS Missing C1C Missing C2C Missing C2P
R5 0.0 %
0.0 %
0.0 %
R6 0.0 %
100.0 %
100.0 %
R7 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 %

SV Galileo Missing C1C Missing C5Q Missing C7Q Missing C8Q
E3 0.0 %
0.0 %
0.0 %
0.0 %
E5 0.0 %
0.0 %
0.0 %
0.0 %
E8 0.0 %
0.3 %
0.3 %
0.3 %
E13 0.0 %
0.0 %
0.0 %
0.0 %
E24 0.0 %
0.0 %
0.0 %
0.0 %
E25 0.0 %
0.0 %
0.0 %
0.0 %

SV BeiDou Missing C2I Missing C6I
C19 0.0 %
0.0 %
C20 0.0 %
0.0 %
C23 0.0 %
0.0 %
C32 0.0 %
0.0 %
C37 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
2.1 %
80 - 85 0
0
0
0
0
0
5.1 %
75 - 80 0
0
0
0
0
0
2.8 %
70 - 75 0
0
0
0
0
0
10.3 %
65 - 70 0
0
0
0
0
0
8.5 %
60 - 65 0
0
0
0
0
0
1.1 %
55 - 60 0
0
0
0
0
0
0.0 %
50 - 55 0
0
0
0
0
0
3.8 %
45 - 50 0
0
0
0
0
0
8.2 %
40 - 45 0
0
0
0
0
0
16.1 %
35 - 40 0
0
0
0
0
0
10.6 %
30 - 35 0
0
0
0
0
0
5.5 %
25 - 30 0
0
0
0
0
0
5.3 %
20 - 25 5
0
0
0
0
0
9.6 %
15 - 20 3
0
2
0
0
0
10.9 %
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 49.4
50.2
55.4
G4 39.2
43.3
45.8
G25 42.2
44.7
49.6
G26 46.5
48.1
52.8
G28 51.9
56.1
58.9
G31 54.2
55.7
-
G32 47.3
47.7
50.8
Average GPS: 47.2
49.4
52.2

SV GLONASS G1 G2
R5 44.2
43.1
R6 43.5
-
R7 50.6
49.7
R9 51.2
49.8
R15 44.6
42.9
R16 55.1
52.6
Average GLONASS: 48.2
47.6

SV Galileo E1 E5a E5b E5a+b
E3 54.3
56.3
56.8
59.5
E5 52.2
54.5
54.6
57.6
E8 40.9
44.4
44.3
47.4
E13 41.8
45.7
45.0
48.6
E24 50.6
52.6
52.8
55.7
E25 50.0
52.3
52.3
55.3
Average Galileo: 48.3
51.0
51.0
54.0

SV BeiDou B1I B3I
C19 48.8
49.9
C20 55.5
54.1
C23 44.6
45.5
C32 46.5
46.5
C37 54.4
54.8
C46 48.8
48.8
Average BeiDou: 49.8
49.9

Code multipath by satellite > 15°: 
SV GPS Av Elev MP (L1) MP (L2) MP (L5)
G3 46.7 ° 0.01 m
0.02 m
0.04 m
G4 19.9 ° 0.16 m
0.22 m
0.17 m
G25 23.9 ° 0.03 m
0.05 m
0.03 m
G26 36.2 ° 0.02 m
0.04 m
0.08 m
G28 66.6 ° 0.02 m
0.01 m
0.01 m
G31 81.3 ° 0.01 m
0.02 m
-
G32 34.4 ° 0.02 m
0.02 m
0.04 m
Average GPS: - 0.04 m
0.06 m
0.06 m

SV GLONASS Av Elev MP (G1) MP (G2)
R5 - - -
R6 - - -
R7 45.2 ° 0.03 m
0.04 m
R9 44.5 ° 0.02 m
0.02 m
R15 18.2 ° 0.03 m
0.08 m
R16 68.8 ° 0.01 m
0.01 m
Average GLONASS: - 0.02 m
0.04 m

SV Galileo Av Elev MP (E1) MP (E5a) MP (E5b) MP (E5a+b)
E3 69.6 ° 0.01 m
0.05 m
0.03 m
0.01 m
E5 51.7 ° 0.02 m
0.04 m
0.02 m
0.02 m
E8 19.9 ° 0.20 m
0.13 m
0.30 m
0.09 m
E13 18.6 ° 0.21 m
0.15 m
0.32 m
0.26 m
E24 43.1 ° 0.02 m
0.04 m
0.03 m
0.01 m
E25 42.2 ° 0.03 m
0.05 m
0.05 m
0.02 m
Average Galileo: - 0.08 m
0.08 m
0.13 m
0.07 m

SV BeiDou Av Elev MP (B1I) MP (B3I)
C19 39.3 ° 0.02 m
0.09 m
C20 84.4 ° 0.02 m
0.02 m
C23 24.1 ° 0.12 m
0.06 m
C32 29.2 ° 0.08 m
0.05 m
C37 71.5 ° 0.01 m
0.01 m
C46 38.8 ° 0.05 m
0.08 m
Average BeiDou: - 0.05 m
0.05 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 0.02 m
- - - - 0.02 m
-
80 - 85 0.01 m
0.01 m
- - - 0.03 m
-
75 - 80 0.01 m
0.04 m
- - - - -
70 - 75 0.01 m
0.01 m
0.04 m
0.03 m
0.01 m
0.01 m
-
65 - 70 0.01 m
0.01 m
0.03 m
0.02 m
0.01 m
- -
60 - 65 0.02 m
0.02 m
0.01 m
- - - -
55 - 60 - - - - - - -
50 - 55 0.02 m
- 0.04 m
0.02 m
0.02 m
- -
45 - 50 0.02 m
0.03 m
0.04 m
- - - -
40 - 45 0.03 m
0.03 m
0.04 m
0.04 m
0.01 m
0.08 m
-
35 - 40 0.03 m
0.03 m
0.08 m
0.02 m
0.03 m
0.09 m
-
30 - 35 0.05 m
0.03 m
0.04 m
- - 0.05 m
-
25 - 30 0.06 m
0.10 m
0.04 m
- - 0.04 m
-
20 - 25 0.08 m
0.04 m
0.06 m
0.17 m
0.09 m
0.07 m
-
15 - 20 0.17 m
0.17 m
0.15 m
0.34 m
0.21 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 2024/03/13 10:14:59.00

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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