Leica SpiderQC v4.2 Quality Report


Program Run: 2014/04/05 00:04:02.21

File Details:


Observation File: alde0940.14o
GPS Navigation File: alde0940.14n
GLONASS Navigation File: alde0940.14g
Quality Testing:  Fail (See below for details) 

Station Details:


Marker Name/Number:  ALDE  31323M001   
Observer/Agency:       
Receiver #/Type/Vers:  495465  LEICA GRX1200+GNSS  8.71/6.112 
Antenna #/Type:  09270059  LEIAX1203+GNSS NONE   
Antenna Offsets (HEN):  0.000  0.000  0.000 
Approx Position (XYZ):  5424185.364  -1532872.880  2975072.419 
Approx Position (plh):  27° 59' 5.17379" N  15° 46' 48.98392" W  122.366m 
Diff. Est-Header:  6.3 m dX  -9.5 m dY  9.4 m dZ 
Diff. Est-Header:  14.8 m (2880 estimates) 

Session Summary:


Time of first obs:  2014/04/04 00:00:00.00 GPS 
Time of last obs:  2014/04/04 23:59:30.00 GPS 
Session length:  23.99 hours 
GPS week:  1786, day 5 
Observation interval:  30.00 seconds 
UTC leap seconds:  16 seconds 

Num SVs with obs:  54 
Num SVs with nav:  55 
Total GPS orbits:  175 
Total GLONASS orbits:  375 
Total Galileo orbits: 
SVs with obs:  G1 G2 G3 G4 G5 G7 G8 G9 G10 G11 G12 G13 G14 G15 G16 G17 G18 G19 G20 G21 G22 G23 G24 G25 G26 G27 G28 G29 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  
SVs without obs:  G6 G30 E1 E2 E3 E4 E5 E6 E7 E8 E9 E10 E11 E12 E13 E14 E15 E16 E17 E18 E19 E20 E21 E22 E23 E24 E25 E26 E27 E28 E29 E30 E31 E32 E33 E34 E35 E36 E37 E38 E39 E40 E41 E42 E43 E44 E45 E46 E47 E48 E49 E50 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16 S17 S18 S19 S20  
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 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  
SVs without nav:  G30  
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:  Fail  Value 44 slips, Threshold 43 slips 
Multipath:  Pass  Value 0.32m MP1 / 0.38m MP2, Threshold 0.5 m 
Data Completeness:  Pass  Value 99.4 %, Threshold 95.0 % 
Navigation Data:  Pass   
     
GLONASS Specific Tests 
Cycle Slips:  Pass  Value 43 slips, Threshold 100 slips 
Multipath:  Pass  Value 0.31m MP1 / 0.47m MP2, Threshold 0.5 m 
Data Completeness:  Pass  Value 98.6 %, Threshold 90.0 % 
Navigation Data:  Pass   

General Quality Indicators:


Tracking   
Num obs > 0°:  41812 
Num possible obs > 0°:  50832 
Num obs with invalid nav: 
Num obs without nav: 
Num obs to unhealthy SV: 
Num obs with WLF change: 
Num complete loss of lock: 

Num obs GPS > 0°:  23490 
Num obs GLONASS > 0°:  18322 
Num obs Galileo > 0°: 
Num obs All > 0°:  41812 

Epochs with < 5 SV > 15°:  (0.0 %) 
Epochs with all SV > 15°:  2790  (96.9 %) 
Epochs with full data > 15°:  2559  (88.9 %) 

Satellite Geometry 
DOP  Minimum  Maximum  Average 
PDOP  2.6  6.2  3.6 
GDOP  3.1  7.5  4.3 

Data Gaps 
Num epochs with data:  2880 
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 
G27  3.500  443 / 450  16.28° / 15.08°  127.74° / 128.75° 
G11  3.000  784 / 790  16.10° / 15.09°  126.93° / 127.68° 
G28  4.500  1265 / 1274  15.10° / 16.32°  126.50° / 124.79° 
G10  2.500  1513 / 1518  15.93° / 15.01°  138.81° / 139.32° 
G26  3.000  1894 / 1900  15.97° / 15.02°  124.49° / 125.43° 
R5  2.500  2826 / 2831  15.16° / 16.04°  125.13° / 124.13° 
Total:  19.000 (37 observations) 

Receiver Clock 
Clock Slips > 15°: 
Max RX clock offset:  0.000127 ms (at 2014/04/04 14:52:30.00) 
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 
Tracking 
Num obs > 15°:  38175  21516  16659 
% obs > 15°:   99.7 %  99.7 %  99.8 % 
Num possible obs > 15°:  38271  21584  16687 
Num complete obs > 15°:  37911  21465  16446 
% complete obs > 15°:   99.1 %  99.4 %  98.6 % 
Average # SV per Epoch:  13.3   7.5   5.8  
         
Obs L2 : Obs L1:  0.995   0.999   0.989  
Obs L5 : Obs L1: 

Cycle Slips         
Num cycle slips > 15°:  87  44  43 
% slips per complete obs:  0.229 %  0.205 %  0.261 % 
Num complete obs per slip:  43576   48784   38247  
IOD Slips > 15°:  246  41  205 
Outliers > 15°: 
LLI L1 : Obs L1: 
LLI L2 : Obs L2:  0.0003   0.0005  
LLI L5 : Obs L5: 

Multipath         
MP1 RMS:  0.313 m  0.318 m  0.307 m 
MP2 RMS:  0.419 m  0.376 m  0.475 m 
MP5 RMS: 

Extended Quality Information:


Tracking by observation type > 15°: 
Type Code Phase SNR Doppler
L1 100.0 %
99.9 %
N/A N/A
L2 N/A 99.3 %
N/A N/A
L2P 99.6 %
N/A N/A N/A

Tracking by satellite > 15°: 
SV Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
G1 15.04° 55.10° 855 850 (99.4 %)
0 (0.0 %) 2
G2 15.04° 64.09° 580 580 (100.0 %)
0 (0.0 %) 1
G3 15.10° 63.83° 809 809 (100.0 %)
0 (0.0 %) 0
G4 15.06° 87.55° 667 667 (100.0 %)
0 (0.0 %) 0
G5 15.03° 84.19° 708 708 (100.0 %)
0 (0.0 %) 0
G7 15.02° 53.40° 732 732 (100.0 %)
0 (0.0 %) 0
G8 15.10° 63.93° 573 573 (100.0 %)
0 (0.0 %) 0
G9 15.16° 74.16° 594 594 (100.0 %)
0 (0.0 %) 0
G10 15.06° 60.21° 828 822 (99.3 %)
0 (0.0 %) 0
G11 15.10° 60.14° 842 835 (99.2 %)
0 (0.0 %) 0
G12 15.10° 83.28° 687 687 (100.0 %)
0 (0.0 %) 0
G13 15.09° 79.66° 625 625 (100.0 %)
0 (0.0 %) 1
G14 15.02° 65.19° 578 578 (100.0 %)
0 (0.0 %) 2
G15 15.10° 69.82° 793 793 (100.0 %)
0 (0.0 %) 0
G16 15.06° 78.69° 729 729 (100.0 %)
0 (0.0 %) 1
G17 15.15° 61.31° 561 561 (100.0 %)
0 (0.0 %) 0
G18 15.00° 43.87° 797 795 (99.7 %)
0 (0.0 %) 9
G19 15.04° 60.63° 838 838 (100.0 %)
0 (0.0 %) 0
G20 15.10° 78.62° 737 736 (99.9 %)
0 (0.0 %) 2
G21 15.06° 56.65° 572 572 (100.0 %)
0 (0.0 %) 1
G22 15.01° 40.55° 819 817 (99.8 %)
0 (0.0 %) 9
G23 15.00° 66.27° 595 595 (100.0 %)
0 (0.0 %) 1
G24 15.04° 57.81° 847 847 (100.0 %)
0 (0.0 %) 0
G25 15.04° 65.36° 802 793 (98.9 %)
0 (0.0 %) 2
G26 15.15° 53.76° 829 822 (99.2 %)
0 (0.0 %) 2
G27 15.06° 54.96° 864 856 (99.1 %)
0 (0.0 %) 0
G28 15.01° 37.04° 821 811 (98.8 %)
0 (0.0 %) 1
G29 15.01° 79.28° 629 629 (100.0 %)
0 (0.0 %) 1
G31 15.04° 84.01° 652 643 (98.6 %)
0 (0.0 %) 6
G32 15.01° 76.92° 621 619 (99.7 %)
0 (0.0 %) 3
R1 15.01° 50.97° 750 750 (100.0 %)
0 (0.0 %) 0
R2 15.05° 72.44° 612 612 (100.0 %)
0 (0.0 %) 2
R3 15.01° 82.90° 608 608 (100.0 %)
0 (0.0 %) 1
R4 15.00° 58.23° 864 864 (100.0 %)
0 (0.0 %) 6
R5 15.09° 60.42° 873 865 (99.1 %)
0 (0.0 %) 6
R6 15.03° 85.65° 630 628 (99.7 %)
0 (0.0 %) 1
R7 15.10° 70.60° 622 622 (100.0 %)
0 (0.0 %) 0
R8 15.07° 49.14° 761 761 (100.0 %)
0 (0.0 %) 0
R9 15.02° 83.84° 834 826 (99.0 %)
0 (0.0 %) 10
R10 15.02° 60.60° 930 927 (99.7 %)
0 (0.0 %) 0
R11 15.02° 60.15° 642 642 (100.0 %)
0 (0.0 %) 0
R12 15.10° 84.66° 539 539 (100.0 %)
0 (0.0 %) 3
R13 15.02° 69.65° 617 617 (100.0 %)
0 (0.0 %) 0
R14 15.05° 48.05° 757 756 (99.9 %)
0 (0.0 %) 1
R15 15.04° 48.97° 754 752 (99.7 %)
0 (0.0 %) 4
R16 15.09° 72.34° 698 698 (100.0 %)
0 (0.0 %) 6
R17 15.00° 59.40° 606 606 (100.0 %)
0 (0.0 %) 0
R19 15.05° 68.85° 986 986 (100.0 %)
0 (0.0 %) 0
R20 15.01° 50.84° 1036 1036 (100.0 %)
0 (0.0 %) 0
R21 15.03° 71.65° 713 713 (100.0 %)
0 (0.0 %) 0
R22 15.09° 84.98° 542 542 (100.0 %)
0 (0.0 %) 1
R23 15.02° 59.61° 603 601 (99.7 %)
0 (0.0 %) 2
R24 15.06° 38.14° 710 708 (99.7 %)
0 (0.0 %) 0

Missing phase observations by satellite > 15°: 
SV Observations Missing L1 Missing L2
G1 2.2 %
0.0 %
0.0 %
G2 1.5 %
0.0 %
0.0 %
G3 2.1 %
0.0 %
0.0 %
G4 1.7 %
0.0 %
0.0 %
G5 1.9 %
0.0 %
0.0 %
G7 1.9 %
0.0 %
0.0 %
G8 1.5 %
0.0 %
0.0 %
G9 1.6 %
0.0 %
0.0 %
G10 2.2 %
0.0 %
0.0 %
G11 2.2 %
0.0 %
0.1 %
G12 1.8 %
0.0 %
0.0 %
G13 1.6 %
0.0 %
0.0 %
G14 1.5 %
0.0 %
0.0 %
G15 2.1 %
0.0 %
0.0 %
G16 1.9 %
0.4 %
0.7 %
G17 1.5 %
0.0 %
0.0 %
G18 2.1 %
0.1 %
0.1 %
G19 2.2 %
0.0 %
0.0 %
G20 1.9 %
0.0 %
0.0 %
G21 1.5 %
0.0 %
0.0 %
G22 2.1 %
0.1 %
0.7 %
G23 1.6 %
0.0 %
0.0 %
G24 2.2 %
0.0 %
0.0 %
G25 2.1 %
1.4 %
1.8 %
G26 2.2 %
0.0 %
0.0 %
G27 2.2 %
0.0 %
0.1 %
G28 2.1 %
0.0 %
0.0 %
G29 1.6 %
0.0 %
0.0 %
G31 1.7 %
1.9 %
2.8 %
G32 1.6 %
0.3 %
0.8 %
R1 2.0 %
0.0 %
0.0 %
R2 1.6 %
0.0 %
0.3 %
R3 1.6 %
0.0 %
0.0 %
R4 2.3 %
0.0 %
0.7 %
R5 2.3 %
0.1 %
5.8 %
R6 1.6 %
1.4 %
3.2 %
R7 1.6 %
0.0 %
0.0 %
R8 2.0 %
0.0 %
0.0 %
R9 2.2 %
1.2 %
7.0 %
R10 2.4 %
0.0 %
0.1 %
R11 1.7 %
0.0 %
0.0 %
R12 1.4 %
0.2 %
0.2 %
R13 1.6 %
0.0 %
0.0 %
R14 2.0 %
0.0 %
0.0 %
R15 2.0 %
0.4 %
2.4 %
R16 1.8 %
0.1 %
8.2 %
R17 1.6 %
0.0 %
0.0 %
R19 2.6 %
0.0 %
0.0 %
R20 2.7 %
0.0 %
0.0 %
R21 1.9 %
0.0 %
0.0 %
R22 1.4 %
0.0 %
0.0 %
R23 1.6 %
0.0 %
0.0 %
R24 1.9 %
0.0 %
0.0 %

Missing code observations by satellite > 15°: 
SV Missing C1 Missing C2P
G1 0.0 %
0.0 %
G2 0.0 %
0.0 %
G3 0.0 %
0.0 %
G4 0.0 %
0.0 %
G5 0.0 %
0.0 %
G7 0.0 %
0.0 %
G8 0.0 %
0.0 %
G9 0.0 %
0.0 %
G10 0.0 %
0.0 %
G11 0.0 %
0.1 %
G12 0.0 %
0.0 %
G13 0.0 %
0.0 %
G14 0.0 %
0.0 %
G15 0.0 %
0.0 %
G16 0.0 %
0.4 %
G17 0.0 %
0.0 %
G18 0.0 %
0.0 %
G19 0.0 %
0.0 %
G20 0.0 %
0.0 %
G21 0.0 %
0.0 %
G22 0.0 %
0.6 %
G23 0.0 %
0.0 %
G24 0.0 %
0.0 %
G25 0.0 %
0.6 %
G26 0.0 %
0.0 %
G27 0.0 %
0.1 %
G28 0.0 %
0.0 %
G29 0.0 %
0.0 %
G31 0.0 %
1.6 %
G32 0.0 %
0.5 %
R1 0.0 %
0.0 %
R2 0.0 %
0.3 %
R3 0.0 %
0.0 %
R4 0.0 %
0.3 %
R5 0.0 %
3.0 %
R6 0.0 %
2.1 %
R7 0.0 %
0.0 %
R8 0.0 %
0.0 %
R9 0.0 %
3.1 %
R10 0.0 %
0.0 %
R11 0.0 %
0.0 %
R12 0.0 %
0.0 %
R13 0.0 %
0.0 %
R14 0.0 %
0.0 %
R15 0.0 %
1.3 %
R16 0.0 %
4.2 %
R17 0.0 %
0.0 %
R19 0.0 %
0.0 %
R20 0.0 %
0.0 %
R21 0.0 %
0.0 %
R22 0.0 %
0.0 %
R23 0.0 %
0.0 %
R24 0.0 %
0.0 %

Tracking by satellite elevation > 15°: 
Elevation Cycle Slips GPS Cycle Slips GLONASS Cycle Slips Galileo Observations
85 - 90 0
0
0
0.1 %
80 - 85 0
0
0
1.2 %
75 - 80 0
0
0
1.9 %
70 - 75 0
0
0
2.4 %
65 - 70 0
0
0
3.5 %
60 - 65 0
1
0
5.1 %
55 - 60 1
2
0
7.5 %
50 - 55 0
1
0
8.7 %
45 - 50 0
1
0
9.3 %
40 - 45 1
3
0
8.6 %
35 - 40 1
2
0
10.2 %
30 - 35 3
4
0
10.0 %
25 - 30 7
7
0
9.6 %
20 - 25 14
10
0
9.9 %
15 - 20 17
12
0
11.9 %
10 - 15 0
0
0
0.0 %
5 - 10 0
0
0
0.0 %
0 - 5 0
0
0
0.0 %

Signal to Noise Ratio by satellite > 15°: 
SV L1/E1 L2 L5/E5a E5b E5a+b
G1 8.3
7.2
- - -
G2 8.3
7.1
- - -
G3 8.4
6.8
- - -
G4 8.5
6.8
- - -
G5 8.5
7.5
- - -
G7 8.1
6.5
- - -
G8 8.4
6.6
- - -
G9 8.5
7.0
- - -
G10 8.3
6.7
- - -
G11 8.4
6.6
- - -
G12 8.4
7.2
- - -
G13 8.5
6.5
- - -
G14 8.1
6.5
- - -
G15 8.4
7.2
- - -
G16 8.4
6.8
- - -
G17 8.4
7.3
- - -
G18 7.7
5.2
- - -
G19 8.4
7.3
- - -
G20 8.2
6.7
- - -
G21 7.7
6.0
- - -
G22 7.9
6.0
- - -
G23 8.6
6.6
- - -
G24 8.2
7.2
- - -
G25 8.2
7.0
- - -
G26 8.3
6.6
- - -
G27 8.5
7.4
- - -
G28 7.8
5.5
- - -
G29 8.5
7.4
- - -
G31 8.5
7.5
- - -
G32 8.4
6.8
- - -
R1 7.7
5.8
- - -
R2 8.1
7.6
- - -
R3 7.4
7.4
- - -
R4 7.5
7.0
- - -
R5 7.9
7.4
- - -
R6 8.1
7.6
- - -
R7 8.1
7.6
- - -
R8 7.8
7.4
- - -
R9 6.4
4.7
- - -
R10 7.9
5.9
- - -
R11 7.3
5.5
- - -
R12 6.8
6.8
- - -
R13 7.1
7.4
- - -
R14 6.2
5.5
- - -
R15 7.3
7.2
- - -
R16 7.5
7.4
- - -
R17 7.8
7.4
- - -
R19 8.1
7.6
- - -
R20 6.7
7.7
- - -
R21 7.4
5.7
- - -
R22 8.4
7.7
- - -
R23 7.7
7.2
- - -
R24 7.8
7.3
- - -
Average GPS: 8.3
6.8
- - -
Average GLONASS: 7.5
6.9
- - -
Average Galileo: - - - - -
Average All: 8.0
6.8
- - -

Code multipath by satellite > 15°: 
SV Av Elev MP1 MP2 MP5 MP5b MP5a+b
G1 35.1 ° 0.28 m
0.37 m
- - -
G2 39.6 ° 0.30 m
0.32 m
- - -
G3 39.5 ° 0.34 m
0.37 m
- - -
G4 51.3 ° 0.25 m
0.30 m
- - -
G5 49.6 ° 0.25 m
0.39 m
- - -
G7 34.2 ° 0.48 m
0.55 m
- - -
G8 39.5 ° 0.39 m
0.38 m
- - -
G9 44.7 ° 0.24 m
0.37 m
- - -
G10 37.6 ° 0.32 m
0.48 m
- - -
G11 37.6 ° 0.29 m
0.34 m
- - -
G12 49.2 ° 0.30 m
0.37 m
- - -
G13 47.4 ° 0.32 m
0.38 m
- - -
G14 40.1 ° 0.27 m
0.29 m
- - -
G15 42.5 ° 0.41 m
0.44 m
- - -
G16 46.9 ° 0.29 m
0.31 m
- - -
G17 38.2 ° 0.31 m
0.27 m
- - -
G18 29.4 ° 0.43 m
0.40 m
- - -
G19 37.8 ° 0.33 m
0.37 m
- - -
G20 46.9 ° 0.25 m
0.39 m
- - -
G21 35.9 ° 0.33 m
0.45 m
- - -
G22 27.8 ° 0.42 m
0.53 m
- - -
G23 40.6 ° 0.34 m
0.39 m
- - -
G24 36.4 ° 0.30 m
0.31 m
- - -
G25 40.2 ° 0.29 m
0.31 m
- - -
G26 34.5 ° 0.30 m
0.39 m
- - -
G27 35.0 ° 0.32 m
0.34 m
- - -
G28 26.0 ° 0.31 m
0.35 m
- - -
G29 47.1 ° 0.32 m
0.33 m
- - -
G31 49.5 ° 0.28 m
0.40 m
- - -
G32 46.0 ° 0.29 m
0.35 m
- - -
R1 33.0 ° 0.36 m
0.61 m
- - -
R2 43.7 ° 0.27 m
0.43 m
- - -
R3 49.0 ° 0.29 m
0.40 m
- - -
R4 36.6 ° 0.35 m
0.44 m
- - -
R5 37.8 ° 0.30 m
0.47 m
- - -
R6 50.3 ° 0.27 m
0.50 m
- - -
R7 42.9 ° 0.32 m
0.47 m
- - -
R8 32.1 ° 0.31 m
0.40 m
- - -
R9 49.4 ° 0.24 m
0.49 m
- - -
R10 37.8 ° 0.29 m
0.39 m
- - -
R11 37.6 ° 0.41 m
0.62 m
- - -
R12 49.9 ° 0.22 m
0.34 m
- - -
R13 42.3 ° 0.30 m
0.51 m
- - -
R14 31.5 ° 0.29 m
0.42 m
- - -
R15 32.0 ° 0.34 m
0.59 m
- - -
R16 43.7 ° 0.34 m
0.46 m
- - -
R17 37.2 ° 0.39 m
0.73 m
- - -
R19 42.0 ° 0.26 m
0.38 m
- - -
R20 32.9 ° 0.33 m
0.50 m
- - -
R21 43.3 ° 0.36 m
0.42 m
- - -
R22 50.0 ° 0.22 m
0.38 m
- - -
R23 37.3 ° 0.28 m
0.44 m
- - -
R24 26.6 ° 0.34 m
0.51 m
- - -
Average GPS: - 0.32 m
0.38 m
- - -
Average GLONASS: - 0.31 m
0.47 m
- - -
Average Galileo: - - - - - -
Average All: - 0.31 m
0.42 m
- - -

Code multipath by satellite elevation > 15°: 
Elevation MP1 MP2 MP5 MP5b MP5a+b
85 - 90 0.11 m
0.16 m
- - -
80 - 85 0.14 m
0.27 m
- - -
75 - 80 0.17 m
0.27 m
- - -
70 - 75 0.13 m
0.29 m
- - -
65 - 70 0.16 m
0.32 m
- - -
60 - 65 0.18 m
0.28 m
- - -
55 - 60 0.21 m
0.31 m
- - -
50 - 55 0.23 m
0.30 m
- - -
45 - 50 0.26 m
0.32 m
- - -
40 - 45 0.29 m
0.37 m
- - -
35 - 40 0.31 m
0.39 m
- - -
30 - 35 0.35 m
0.43 m
- - -
25 - 30 0.42 m
0.53 m
- - -
20 - 25 0.44 m
0.56 m
- - -
15 - 20 0.53 m
0.73 m
- - -
10 - 15 - - - - -
5 - 10 - - - - -
0 - 5 - - - - -


Observation File Messages:





GPS Navigation File Messages:




GLONASS Navigation File Messages:




General Messages:



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 L1, L2 code and phase measurements with a SNR of at least 0 
(#)  A complete Galileo 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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This file was processed using version 4.2.0.10