Leica SpiderQC v7.5 Quality Report


Program Run: 2021/07/06 07:03:15.77

File Details:


Observation File: pozo187g.21o
GPS Navigation File: pozo187g.21n
GLONASS Navigation File: pozo187g.21g
Galileo Navigation File: pozo187g.21l
BeiDou Navigation File: pozo187g.21f
Quality Testing:  Fail (See below for details) 

Station Details:


Marker Name/Number:  POZO  13468M001   
Observer/Agency:  IECA  Junta de Andalucia   
Receiver #/Type/Vers:  1832461  LEICA GR50  4.20/7.300 
Antenna #/Type:  21015005  LEIAR20 LEIM   
Antenna Offsets (HEN):  0.000  0.000  0.000 
Approx Position (XYZ):  4988767.003  -423244.328  3939354.591 
Approx Position (plh):  38° 23' 0.47934" N  4° 50' 57.59105" W  736.051m 
Diff. Est-Header:  2.0 m dX  -4.3 m dY  2.6 m dZ 
Diff. Est-Header:  5.4 m (3600 estimates) 

Session Summary:


Time of first obs:  2021/07/06 06:00:00.00 GPS 
Time of last obs:  2021/07/06 06:59:59.00 GPS 
Session length:  59.98 minutes 
GPS week:  2165, day 2 
Observation interval:  1.00 seconds 
UTC leap seconds:  18 seconds 

Num SVs with obs:  38 
Num SVs with nav:  102 
Total GPS orbits:  44 
Total GLONASS orbits:  42 
Total Galileo orbits:  128 
Total BeiDou orbits:  31 
Total QZSS orbits: 
Total NavIC orbits: 
SVs with obs:  G2 G4 G12 G16 G18 G20 G24 G25 G26 G29 G31 G32 R6 R7 R8 R9 R15 R16 R17 R18 R19 E2 E3 E7 E8 E11 E24 E25 E30 E36 C5 C12 C13 C14 C24 C25 C26 C29  
SVs without obs:  G1 G3 G5 G6 G7 G8 G9 G10 G11 G13 G14 G15 G17 G19 G21 G22 G23 G27 G28 G30 R1 R2 R3 R4 R5 R10 R11 R12 R13 R14 R20 R21 R22 R23 R24 E1 E4 E5 E6 E9 E10 E12 E13 E14 E15 E16 E17 E18 E19 E20 E21 E22 E23 E26 E27 E28 E29 E31 E32 E33 E34 E35 C1 C2 C3 C4 C6 C7 C8 C9 C10 C11 C15 C16 C17 C18 C19 C20 C21 C22 C23 C27 C28 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 E15 E18 E19 E21 E24 E25 E26 E27 E30 E31 E33 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C16 C18 C19 C20 C21 C22 C23 C24 C25 C26 C27 C28 C29 C30  
SVs without nav:  E6 E10 E14 E16 E17 E20 E22 E23 E28 E29 E32 E34 E35 E36 C1 C2 C3 C4 C15 C17 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 0 slips, Threshold 46 slips 
Multipath:  Pass  Value 0.17m MP1 / 0.15m MP2 / 0.17m MP5, Threshold 0.5 m 
Data Completeness:  Pass  Value 100.0 %, Threshold 95.0 % 
Navigation Data:  Fail   
     
GLONASS Specific Tests 
Cycle Slips:  Pass  Value 2 slips, Threshold 124 slips 
Multipath:  Pass  Value 0.12m MP1 / 0.17m MP2, Threshold 0.5 m 
Data Completeness:  Pass  Value 96.6 %, Threshold 90.0 % 
Navigation Data:  Pass   
     
Galileo Specific Tests 
Cycle Slips:  Pass  Value 1 slips, Threshold 119 slips 
Multipath:  Pass  Value 0.18m MP1 / 0.29m MP5a / 0.27m MP5b / 0.12m 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 0 slips, Threshold 90 slips 
Multipath:  Pass  Value 0.17m MP1 / 0.18m MP2b, Threshold 0.5 m 
Data Completeness:  Pass  Value 100.0 %, Threshold 90.0 % 
Navigation Data:  Pass   

General Quality Indicators:


Tracking   
Num obs > 0°:  111885 
Num possible obs > 0°:  112861 
Num obs with invalid nav: 
Num obs without nav:  3650 
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°:  2863  (79.5 %) 
Epochs with full data > 15°:  2863  (79.5 %) 

Satellite Geometry 
DOP  Minimum  Maximum  Average 
PDOP  2.2  2.4  2.2 
GDOP  2.6  2.9  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 
R19  12.267  1 / 737  24.48° / 30.53°  179.66° / 180.01° 
Total:  12.267 (735 observations) 

Receiver Clock 
Clock Slips > 15°: 
Max RX clock offset:  0.000019 ms (at 2021/07/06 06:54:41.00) 
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°:  111885  30654  28773  29001  23457 
Num possible obs > 0°:  112861  31905  30887  25391  24678 
Num obs with invalid nav: 
Num obs without nav:  3650  50  3600 
Num obs to unhealthy SV: 
               
Tracking over Elevation Mask (15°) 
Num obs > 15°:  78801  23217  20724  19816  15044 
% obs > 15°:   99.1 %  100.0 %  96.6 %  100.0 %  100.0 % 
Num possible obs > 15°:  79538  23217  21461  19816  15044 
Num complete obs > 15°:  78801  23217  20724  19816  15044 
% complete obs > 15°:   99.1 %  100.0 %  96.6 %  100.0 %  100.0 % 
Num obs with WLF change:  
Average # SV per Epoch:  21.9   6.4   5.8   5.5   4.2  
               
Observation ratio w.r.t. L1/E1/B1I: 
Obs L2/B1C:  1.978   1.959   2.000  
Obs E5b/B2I:  0.775   1.000   0.479  
Obs L5/E5a/B2a:  0.755   0.546   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:  0.004 %  0.010 %  0.005 % 
Num complete obs per slip:  26267   10362   19816  
IOD Slips > 15°: 
Outliers > 15°: 
LLI : Obs L1/E1/B1I:  0.0000   0.0000  
LLI : Obs L2/B1C:  0.0000   0.0000  
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:  0.159 m  0.165 m  0.117 m  0.183 m  0.172 m 
MP (L2/B1C) RMS:  0.156 m  0.146 m  0.167 m 
MP (L5/E5a/B2a) RMS:  0.250 m  0.171 m  0.295 m 
MP (E5b/B2I) RMS:  0.253 m  0.274 m  0.183 m 
MP (E5a+b/B2a+b) RMS:  0.116 m  0.116 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 95.9 %
95.9 %
95.9 %
95.9 %
L2W 100.0 %
100.0 %
100.0 %
100.0 %
L5Q 75.5 %
75.5 %
75.5 %
75.5 %
L7I 47.9 %
47.9 %
47.9 %
47.9 %
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
G2 15.00° 18.23° 954 954 (100.0 %)
0 (0.0 %) 0
G4 - - 0 0 (-)
50 (-) 0
G12 15.00° 27.12° 2383 2383 (100.0 %)
0 (0.0 %) 0
G18 15.00° 33.38° 2601 2601 (100.0 %)
0 (0.0 %) 0
G25 41.36° 59.06° 3600 3600 (100.0 %)
0 (0.0 %) 0
G26 15.00° 32.14° 3150 3150 (100.0 %)
0 (0.0 %) 0
G29 67.52° 86.75° 3600 3600 (100.0 %)
0 (0.0 %) 0
G31 40.07° 64.78° 3600 3600 (100.0 %)
0 (0.0 %) 0
G32 15.00° 35.11° 3329 3329 (100.0 %)
0 (0.0 %) 0

SV GLONASS Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
R7 15.00° 15.10° 194 194 (100.0 %)
0 (0.0 %) 0
R9 15.00° 36.88° 3291 3291 (100.0 %)
0 (0.0 %) 0
R15 23.39° 42.65° 3600 3600 (100.0 %)
0 (0.0 %) 0
R16 54.07° 70.18° 3600 3600 (100.0 %)
0 (0.0 %) 0
R17 15.01° 41.62° 3576 3576 (100.0 %)
0 (0.0 %) 0
R18 62.72° 71.61° 3600 3600 (100.0 %)
0 (0.0 %) 0
R19 31.25° 59.44° 3600 2863 (79.5 %)
0 (0.0 %) 2

SV Galileo Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
E2 61.60° 71.49° 3600 3600 (100.0 %)
0 (0.0 %) 0
E3 15.00° 17.57° 477 477 (100.0 %)
0 (0.0 %) 0
E7 15.00° 15.19° 1339 1339 (100.0 %)
0 (0.0 %) 0
E8 15.43° 30.01° 3600 3600 (100.0 %)
0 (0.0 %) 1
E11 28.32° 37.80° 3600 3600 (100.0 %)
0 (0.0 %) 0
E25 35.20° 48.35° 3600 3600 (100.0 %)
0 (0.0 %) 0
E30 18.19° 33.00° 3600 3600 (100.0 %)
0 (0.0 %) 0
E36 - - 0 0 (-)
3600 (-) 0

SV BeiDou Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
C12 21.29° 46.89° 3600 3600 (100.0 %)
0 (0.0 %) 0
C13 21.43° 23.71° 3600 3600 (100.0 %)
0 (0.0 %) 0
C24 43.18° 66.40° 3600 3600 (100.0 %)
0 (0.0 %) 0
C26 60.28° 77.19° 3600 3600 (100.0 %)
0 (0.0 %) 0
C29 15.00° 18.62° 644 644 (100.0 %)
0 (0.0 %) 0

Missing phase observations by satellite > 15°: 
SV GPS Observations Missing L1C Missing L2S Missing L2W Missing L5Q
G2 1.2 %
0.0 %
100.0 %
0.0 %
100.0 %
G12 3.0 %
0.0 %
0.0 %
0.0 %
100.0 %
G18 3.3 %
0.0 %
0.0 %
0.0 %
0.0 %
G25 4.6 %
0.0 %
0.0 %
0.0 %
0.0 %
G26 4.0 %
0.0 %
0.0 %
0.0 %
0.0 %
G29 4.6 %
0.0 %
0.0 %
0.0 %
100.0 %
G31 4.6 %
0.0 %
0.0 %
0.0 %
100.0 %
G32 4.2 %
0.0 %
0.0 %
0.0 %
0.0 %

SV GLONASS Observations Missing L1C Missing L2C Missing L2P
R7 0.2 %
0.0 %
0.0 %
0.0 %
R9 4.2 %
0.0 %
0.0 %
0.0 %
R15 4.6 %
0.0 %
0.0 %
0.0 %
R16 4.6 %
0.0 %
0.0 %
0.0 %
R17 4.5 %
0.0 %
0.0 %
0.0 %
R18 4.6 %
0.0 %
0.0 %
0.0 %
R19 3.6 %
0.0 %
0.1 %
0.1 %

SV Galileo Observations Missing L1C Missing L5Q Missing L7Q Missing L8Q
E2 4.6 %
0.0 %
0.0 %
0.0 %
0.0 %
E3 0.6 %
0.0 %
0.0 %
0.0 %
0.0 %
E7 1.7 %
0.0 %
0.0 %
0.0 %
0.0 %
E8 4.6 %
0.0 %
0.0 %
0.0 %
0.0 %
E11 4.6 %
0.0 %
0.0 %
0.0 %
0.0 %
E25 4.6 %
0.0 %
0.0 %
0.0 %
0.0 %
E30 4.6 %
0.0 %
0.0 %
0.0 %
0.0 %

SV BeiDou Observations Missing L2I Missing L7I
C12 4.6 %
0.0 %
0.0 %
C13 4.6 %
0.0 %
0.0 %
C24 4.6 %
0.0 %
100.0 %
C26 4.6 %
0.0 %
100.0 %
C29 0.8 %
0.0 %
100.0 %

Missing code observations by satellite > 15°: 
SV GPS Missing C1C Missing C2S Missing C2W Missing C5Q
G2 0.0 %
100.0 %
0.0 %
100.0 %
G12 0.0 %
0.0 %
0.0 %
100.0 %
G18 0.0 %
0.0 %
0.0 %
0.0 %
G25 0.0 %
0.0 %
0.0 %
0.0 %
G26 0.0 %
0.0 %
0.0 %
0.0 %
G29 0.0 %
0.0 %
0.0 %
100.0 %
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
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 %
R17 0.0 %
0.0 %
0.0 %
R18 0.0 %
0.0 %
0.0 %
R19 0.0 %
0.0 %
0.0 %

SV Galileo Missing C1C Missing C5Q Missing C7Q Missing C8Q
E2 0.0 %
0.0 %
0.0 %
0.0 %
E3 0.0 %
0.0 %
0.0 %
0.0 %
E7 0.0 %
0.0 %
0.0 %
0.0 %
E8 0.0 %
0.0 %
0.0 %
0.0 %
E11 0.0 %
0.0 %
0.0 %
0.0 %
E25 0.0 %
0.0 %
0.0 %
0.0 %
E30 0.0 %
0.0 %
0.0 %
0.0 %

SV BeiDou Missing C2I Missing C7I
C12 0.0 %
0.0 %
C13 0.0 %
0.0 %
C24 0.0 %
100.0 %
C26 0.0 %
100.0 %
C29 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
1.1 %
80 - 85 0
0
0
0
0
0
1.5 %
75 - 80 0
0
0
0
0
0
1.9 %
70 - 75 0
0
0
0
0
0
5.1 %
65 - 70 0
0
0
0
0
0
8.1 %
60 - 65 0
0
0
0
0
0
6.1 %
55 - 60 0
0
0
0
0
0
4.6 %
50 - 55 0
0
0
0
0
0
4.0 %
45 - 50 0
0
0
0
0
0
5.4 %
40 - 45 0
0
0
0
0
0
6.5 %
35 - 40 0
0
0
0
0
0
7.8 %
30 - 35 0
2
0
0
0
0
9.2 %
25 - 30 0
0
0
0
0
0
11.1 %
20 - 25 0
0
0
0
0
0
14.9 %
15 - 20 0
0
1
0
0
0
12.8 %
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
G2 40.5
39.5
-
G12 42.3
42.8
-
G18 42.8
46.5
49.4
G25 50.1
51.6
55.5
G26 41.8
45.3
49.2
G29 54.1
55.4
-
G31 51.4
51.0
-
G32 43.8
45.8
48.2
Average GPS: 45.8
47.2
50.6

SV GLONASS G1 G2
R7 40.2
41.6
R9 45.6
44.4
R15 49.0
46.4
R16 48.7
46.3
R17 45.8
44.5
R18 53.9
51.5
R19 39.0
45.3
Average GLONASS: 46.0
45.7

SV Galileo E1 E5a E5b E5a+b
E2 54.6
55.8
56.2
59.0
E3 40.3
44.3
44.1
47.4
E7 40.8
44.4
44.4
47.5
E8 44.0
46.6
46.9
49.8
E11 44.7
46.5
46.0
49.4
E25 50.1
51.7
52.0
54.9
E30 45.0
47.3
47.5
50.5
Average Galileo: 45.7
48.1
48.2
51.2

SV BeiDou B1I B2I
C12 44.1
49.9
C13 39.9
42.8
C24 51.9
-
C26 53.1
-
C29 40.8
-
Average BeiDou: 46.0
46.3

Code multipath by satellite > 15°: 
SV GPS Av Elev MP (L1) MP (L2) MP (L5)
G2 16.6 ° 0.27 m
0.33 m
-
G12 21.1 ° 0.20 m
0.22 m
-
G18 24.2 ° 0.15 m
0.16 m
0.24 m
G25 50.2 ° 0.09 m
0.09 m
0.09 m
G26 23.6 ° 0.30 m
0.18 m
0.21 m
G29 77.1 ° 0.06 m
0.03 m
-
G31 52.4 ° 0.10 m
0.07 m
-
G32 25.1 ° 0.15 m
0.10 m
0.14 m
Average GPS: - 0.17 m
0.15 m
0.17 m

SV GLONASS Av Elev MP (G1) MP (G2)
R7 15.1 ° 0.09 m
0.22 m
R9 25.9 ° 0.17 m
0.28 m
R15 33.0 ° 0.13 m
0.18 m
R16 62.1 ° 0.06 m
0.07 m
R17 28.3 ° 0.19 m
0.23 m
R18 67.2 ° 0.07 m
0.08 m
R19 45.3 ° 0.11 m
0.10 m
Average GLONASS: - 0.12 m
0.17 m

SV Galileo Av Elev MP (E1) MP (E5a) MP (E5b) MP (E5a+b)
E2 66.5 ° 0.06 m
0.06 m
0.06 m
0.02 m
E3 16.3 ° 0.14 m
0.20 m
0.21 m
0.17 m
E7 15.1 ° 0.47 m
0.91 m
0.67 m
0.21 m
E8 22.7 ° 0.18 m
0.28 m
0.33 m
0.19 m
E11 33.1 ° 0.13 m
0.22 m
0.22 m
0.06 m
E25 41.8 ° 0.10 m
0.14 m
0.12 m
0.03 m
E30 25.6 ° 0.21 m
0.25 m
0.29 m
0.13 m
Average Galileo: - 0.18 m
0.29 m
0.27 m
0.12 m

SV BeiDou Av Elev MP (B1I) MP (B2I)
C12 34.1 ° 0.13 m
0.13 m
C13 22.6 ° 0.21 m
0.23 m
C24 54.8 ° 0.08 m
-
C26 68.7 ° 0.26 m
-
C29 16.8 ° 0.18 m
-
Average BeiDou: - 0.17 m
0.18 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 0.08 m
0.03 m
- - - - -
80 - 85 0.05 m
0.03 m
- - - - -
75 - 80 0.22 m
0.02 m
- - - - -
70 - 75 0.09 m
0.05 m
0.06 m
0.10 m
0.03 m
- -
65 - 70 0.08 m
0.07 m
0.07 m
0.06 m
0.02 m
- -
60 - 65 0.11 m
0.06 m
0.05 m
0.06 m
0.03 m
- -
55 - 60 0.09 m
0.09 m
0.10 m
- - - -
50 - 55 0.08 m
0.08 m
0.06 m
- - - -
45 - 50 0.10 m
0.08 m
0.11 m
0.12 m
0.02 m
- -
40 - 45 0.10 m
0.12 m
0.13 m
0.10 m
0.03 m
- -
35 - 40 0.12 m
0.14 m
0.20 m
0.17 m
0.05 m
- -
30 - 35 0.12 m
0.18 m
0.18 m
0.18 m
0.06 m
- -
25 - 30 0.18 m
0.17 m
0.19 m
0.23 m
0.09 m
- -
20 - 25 0.21 m
0.19 m
0.26 m
0.29 m
0.17 m
- -
15 - 20 0.27 m
0.26 m
0.42 m
0.48 m
0.24 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:


- Orbit missing or expired for SV G4 starting 2021/07/06 06:53:51.00.
- Updated header information or comments after epoch 2021/07/06 06:59:59.00

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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