Leica SpiderQC v7.5 Quality Report


Program Run: 2021/04/05 15:02:14.54

File Details:


Observation File: pozo095o.21o
GPS Navigation File: pozo095o.21n
GLONASS Navigation File: pozo095o.21g
Galileo Navigation File: pozo095o.21l
BeiDou Navigation File: pozo095o.21f
Quality Testing:  Pass 

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:  1.8 m dX  -4.0 m dY  1.7 m dZ 
Diff. Est-Header:  4.7 m (3600 estimates) 

Session Summary:


Time of first obs:  2021/04/05 14:00:00.00 GPS 
Time of last obs:  2021/04/05 14:59:59.00 GPS 
Session length:  59.98 minutes 
GPS week:  2152, day 1 
Observation interval:  1.00 seconds 
UTC leap seconds:  18 seconds 

Num SVs with obs:  35 
Num SVs with nav:  102 
Total GPS orbits:  45 
Total GLONASS orbits:  37 
Total Galileo orbits:  98 
Total BeiDou orbits:  31 
Total QZSS orbits: 
Total NavIC orbits: 
SVs with obs:  G4 G5 G10 G16 G18 G20 G23 G25 G26 G27 G29 G31 R12 R13 R14 R17 R22 R23 R24 E1 E5 E9 E12 E24 E26 E31 E33 C5 C11 C12 C13 C23 C24 C25 C28  
SVs without obs:  G1 G2 G3 G6 G7 G8 G9 G11 G12 G13 G14 G15 G17 G19 G21 G22 G24 G28 G30 G32 R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R15 R16 R18 R19 R20 R21 E2 E3 E4 E6 E7 E8 E10 E11 E13 E14 E15 E16 E17 E18 E19 E20 E21 E22 E23 E25 E27 E28 E29 E30 E32 E34 E35 E36 C1 C2 C3 C4 C6 C7 C8 C9 C10 C14 C15 C16 C17 C18 C19 C20 C21 C22 C26 C27 C29 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 1 slips, Threshold 50 slips 
Multipath:  Pass  Value 0.15m MP1 / 0.14m MP2 / 0.20m MP5, Threshold 0.5 m 
Data Completeness:  Pass  Value 100.0 %, Threshold 95.0 % 
Navigation Data:  Pass   
     
GLONASS Specific Tests 
Cycle Slips:  Pass  Value 8 slips, Threshold 124 slips 
Multipath:  Pass  Value 0.12m MP1 / 0.16m MP2, Threshold 0.5 m 
Data Completeness:  Pass  Value 100.0 %, Threshold 90.0 % 
Navigation Data:  Pass   
     
Galileo Specific Tests 
Cycle Slips:  Pass  Value 1 slips, Threshold 119 slips 
Multipath:  Pass  Value 0.11m MP1 / 0.17m MP5a / 0.16m MP5b / 0.04m 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 125 slips 
Multipath:  Pass  Value 0.46m MP1 / 0.23m MP2b, Threshold 0.5 m 
Data Completeness:  Pass  Value 100.0 %, Threshold 90.0 % 
Navigation Data:  Pass   

General Quality Indicators:


Tracking   
Num obs > 0°:  112507 
Num possible obs > 0°:  114708 
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°:  3598  (99.9 %) 
Epochs with full data > 15°:  3590  (99.7 %) 

Satellite Geometry 
DOP  Minimum  Maximum  Average 
PDOP  2.0  2.2  2.1 
GDOP  2.5  2.7  2.6 

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 
None   

Receiver Clock 
Clock Slips > 15°: 
Max RX clock offset:  0.000046 ms (at 2021/04/05 14:06:10.00) 
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°:  112507  39064  21824  24996  26623 
Num possible obs > 0°:  114708  39248  21840  24986  28634 
Num obs with invalid nav: 
Num obs without nav: 
Num obs to unhealthy SV: 
               
Tracking over Elevation Mask (15°) 
Num obs > 15°:  86250  24875  20686  19899  20790 
% obs > 15°:   100.0 %  100.0 %  100.0 %  100.0 %  100.0 % 
Num possible obs > 15°:  86252  24875  20688  19899  20790 
Num complete obs > 15°:  86242  24875  20678  19899  20790 
% complete obs > 15°:   100.0 %  100.0 %  100.0 %  100.0 %  100.0 % 
Num obs with WLF change:  
Average # SV per Epoch:  24.0   6.9   5.7   5.5   5.8  
               
Observation ratio w.r.t. L1/E1/B1I: 
Obs L2/B1C:  1.714   1.768   1.649  
Obs E5b/B2I:  0.750   1.000   0.510  
Obs L5/E5a/B2a:  0.711   0.479   1.000  
Obs E5a+b/B2a+b:  1.000   1.000  
Obs L6/E6/B3I/G2a: 
Obs G3: 

Cycle Slips               
Num cycle slips > 15°:  10 
% slips per complete obs:  0.012 %  0.004 %  0.039 %  0.005 % 
Num complete obs per slip:  8624   24875   2584   19899  
IOD Slips > 15°: 
Outliers > 15°: 
LLI : Obs L1/E1/B1I:  0.0000   0.0001  
LLI : Obs L2/B1C:  0.0001   0.0001  
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:  0.218 m  0.152 m  0.119 m  0.109 m  0.459 m 
MP (L2/B1C) RMS:  0.151 m  0.142 m  0.164 m 
MP (L5/E5a/B2a) RMS:  0.185 m  0.201 m  0.175 m 
MP (E5b/B2I) RMS:  0.182 m  0.157 m  0.231 m 
MP (E5a+b/B2a+b) RMS:  0.041 m  0.041 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 82.5 %
82.3 %
82.5 %
82.5 %
L2P 82.6 %
82.6 %
82.6 %
82.6 %
L2S 76.8 %
76.8 %
76.8 %
76.8 %
L2W 100.0 %
100.0 %
100.0 %
100.0 %
L5Q 71.1 %
71.1 %
71.1 %
71.1 %
L7I 51.0 %
51.0 %
51.0 %
51.0 %
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
G16 21.07° 43.54° 3600 3600 (100.0 %)
0 (0.0 %) 0
G18 52.55° 66.47° 3600 3600 (100.0 %)
0 (0.0 %) 0
G20 15.00° 24.54° 2161 2161 (100.0 %)
0 (0.0 %) 0
G25 15.00° 29.63° 2725 2725 (100.0 %)
0 (0.0 %) 1
G26 46.70° 71.77° 3600 3600 (100.0 %)
0 (0.0 %) 0
G27 15.00° 25.74° 1989 1989 (100.0 %)
0 (0.0 %) 0
G29 25.83° 49.06° 3600 3600 (100.0 %)
0 (0.0 %) 0
G31 45.07° 69.24° 3600 3600 (100.0 %)
0 (0.0 %) 0

SV GLONASS Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
R12 28.64° 56.10° 3600 3600 (100.0 %)
0 (0.0 %) 0
R13 61.11° 87.76° 3600 3600 (100.0 %)
0 (0.0 %) 0
R14 15.01° 36.79° 2782 2782 (100.0 %)
0 (0.0 %) 0
R22 15.00° 43.20° 3506 3504 (99.9 %)
0 (0.0 %) 8
R23 63.78° 80.16° 3600 3600 (100.0 %)
0 (0.0 %) 0
R24 22.57° 50.45° 3600 3600 (100.0 %)
0 (0.0 %) 0

SV Galileo Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
E1 15.45° 31.81° 3600 3600 (100.0 %)
0 (0.0 %) 0
E12 42.35° 67.55° 3600 3600 (100.0 %)
0 (0.0 %) 0
E24 36.27° 55.89° 3600 3600 (100.0 %)
0 (0.0 %) 0
E26 15.01° 24.61° 1899 1899 (100.0 %)
0 (0.0 %) 0
E31 68.99° 77.33° 3600 3600 (100.0 %)
0 (0.0 %) 0
E33 53.99° 67.12° 3600 3600 (100.0 %)
0 (0.0 %) 1

SV BeiDou Min Elev Max Elev Possible Observations Actual Observations Observations with Invalid Ephemeris Cycle Slips
C11 74.86° 85.01° 3600 3600 (100.0 %)
0 (0.0 %) 0
C12 24.84° 47.13° 3600 3600 (100.0 %)
0 (0.0 %) 0
C13 15.00° 20.77° 3407 3407 (100.0 %)
0 (0.0 %) 0
C23 36.84° 57.59° 3600 3600 (100.0 %)
0 (0.0 %) 0
C24 15.00° 29.66° 2337 2337 (100.0 %)
0 (0.0 %) 0
C25 58.03° 84.27° 3600 3600 (100.0 %)
0 (0.0 %) 0
C28 15.00° 18.41° 646 646 (100.0 %)
0 (0.0 %) 0

Missing phase observations by satellite > 15°: 
SV GPS Observations Missing L1C Missing L2S Missing L2W Missing L5Q
G16 4.2 %
0.0 %
100.0 %
0.0 %
100.0 %
G18 4.2 %
0.0 %
0.0 %
0.0 %
0.0 %
G20 2.5 %
0.0 %
100.0 %
0.0 %
100.0 %
G25 3.2 %
0.0 %
0.0 %
0.0 %
0.0 %
G26 4.2 %
0.0 %
0.0 %
0.0 %
0.0 %
G27 2.3 %
0.0 %
0.0 %
0.0 %
0.0 %
G29 4.2 %
0.0 %
0.0 %
0.0 %
100.0 %
G31 4.2 %
0.0 %
0.0 %
0.0 %
100.0 %

SV GLONASS Observations Missing L1C Missing L2C Missing L2P
R12 4.2 %
0.0 %
0.0 %
0.0 %
R13 4.2 %
0.0 %
0.0 %
0.0 %
R14 3.2 %
0.0 %
0.0 %
0.0 %
R22 4.1 %
0.2 %
1.7 %
0.2 %
R23 4.2 %
0.0 %
100.0 %
100.0 %
R24 4.2 %
0.0 %
0.0 %
0.0 %

SV Galileo Observations Missing L1C Missing L5Q Missing L7Q Missing L8Q
E1 4.2 %
0.0 %
0.0 %
0.0 %
0.0 %
E12 4.2 %
0.0 %
0.0 %
0.0 %
0.0 %
E24 4.2 %
0.0 %
0.0 %
0.0 %
0.0 %
E26 2.2 %
0.0 %
0.0 %
0.0 %
0.0 %
E31 4.2 %
0.0 %
0.0 %
0.0 %
0.0 %
E33 4.2 %
0.0 %
0.0 %
0.0 %
0.0 %

SV BeiDou Observations Missing L2I Missing L7I
C11 4.2 %
0.0 %
0.0 %
C12 4.2 %
0.0 %
0.0 %
C13 4.0 %
0.0 %
0.0 %
C23 4.2 %
0.0 %
100.0 %
C24 2.7 %
0.0 %
100.0 %
C25 4.2 %
0.0 %
100.0 %
C28 0.7 %
0.0 %
100.0 %

Missing code observations by satellite > 15°: 
SV GPS Missing C1C Missing C2S Missing C2W Missing C5Q
G16 0.0 %
100.0 %
0.0 %
100.0 %
G18 0.0 %
0.0 %
0.0 %
0.0 %
G20 0.0 %
100.0 %
0.0 %
100.0 %
G25 0.0 %
0.0 %
0.0 %
0.0 %
G26 0.0 %
0.0 %
0.0 %
0.0 %
G27 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 %

SV GLONASS Missing C1C Missing C2C Missing C2P
R12 0.0 %
0.0 %
0.0 %
R13 0.0 %
0.0 %
0.0 %
R14 0.0 %
0.0 %
0.0 %
R22 0.0 %
0.4 %
0.0 %
R23 0.0 %
100.0 %
100.0 %
R24 0.0 %
0.0 %
0.0 %

SV Galileo Missing C1C Missing C5Q Missing C7Q Missing C8Q
E1 0.0 %
0.0 %
0.0 %
0.0 %
E12 0.0 %
0.0 %
0.0 %
0.0 %
E24 0.0 %
0.0 %
0.0 %
0.0 %
E26 0.0 %
0.0 %
0.0 %
0.0 %
E31 0.0 %
0.0 %
0.0 %
0.0 %
E33 0.0 %
0.0 %
0.0 %
0.0 %

SV BeiDou Missing C2I Missing C7I
C11 0.0 %
0.0 %
C12 0.0 %
0.0 %
C13 0.0 %
0.0 %
C23 0.0 %
100.0 %
C24 0.0 %
100.0 %
C25 0.0 %
100.0 %
C28 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
4.7 %
75 - 80 0
0
0
0
0
0
7.6 %
70 - 75 0
0
0
0
0
0
3.8 %
65 - 70 0
0
0
0
0
0
7.4 %
60 - 65 0
0
0
0
0
0
6.7 %
55 - 60 0
0
0
0
0
0
5.8 %
50 - 55 0
0
1
0
0
0
6.0 %
45 - 50 0
0
0
0
0
0
6.8 %
40 - 45 0
0
0
0
0
0
6.8 %
35 - 40 0
0
0
0
0
0
6.6 %
30 - 35 0
0
0
0
0
0
6.2 %
25 - 30 0
0
0
0
0
0
8.5 %
20 - 25 0
1
0
0
0
0
10.0 %
15 - 20 1
7
0
0
0
0
12.2 %
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
G16 44.9
42.6
-
G18 51.2
54.9
57.2
G20 40.6
39.1
-
G25 40.7
44.0
48.2
G26 52.0
53.2
56.2
G27 41.5
45.2
47.6
G29 47.2
46.9
-
G31 51.6
51.4
-
Average GPS: 46.2
47.2
52.3

SV GLONASS G1 G2
R12 51.1
47.9
R13 42.9
46.7
R14 45.4
43.3
R22 35.8
31.7
R23 54.5
-
R24 48.5
46.1
Average GLONASS: 46.3
43.1

SV Galileo E1 E5a E5b E5a+b
E1 43.7
46.5
46.7
49.5
E12 48.9
51.0
51.4
54.1
E24 51.0
52.1
52.5
55.3
E26 42.2
45.2
45.4
48.2
E31 54.2
55.4
56.0
58.6
E33 53.4
54.8
55.3
57.9
Average Galileo: 48.9
50.8
51.2
53.9

SV BeiDou B1I B2I
C11 51.4
55.7
C12 44.2
50.2
C13 38.0
40.5
C23 50.4
-
C24 42.0
-
C25 53.3
-
C28 40.3
-
Average BeiDou: 45.7
48.8

Code multipath by satellite > 15°: 
SV GPS Av Elev MP (L1) MP (L2) MP (L5)
G16 32.3 ° 0.24 m
0.22 m
-
G18 59.5 ° 0.04 m
0.04 m
0.07 m
G20 19.8 ° 0.21 m
0.33 m
-
G25 22.3 ° 0.22 m
0.16 m
0.28 m
G26 59.2 ° 0.07 m
0.04 m
0.11 m
G27 20.4 ° 0.24 m
0.20 m
0.34 m
G29 37.4 ° 0.15 m
0.10 m
-
G31 57.2 ° 0.04 m
0.04 m
-
Average GPS: - 0.15 m
0.14 m
0.20 m

SV GLONASS Av Elev MP (G1) MP (G2)
R12 42.4 ° 0.07 m
0.11 m
R13 74.4 ° 0.08 m
0.06 m
R14 25.9 ° 0.17 m
0.27 m
R22 29.1 ° 0.20 m
0.21 m
R23 - - -
R24 36.5 ° 0.08 m
0.17 m
Average GLONASS: - 0.12 m
0.16 m

SV Galileo Av Elev MP (E1) MP (E5a) MP (E5b) MP (E5a+b)
E1 23.6 ° 0.17 m
0.25 m
0.22 m
0.09 m
E12 55.0 ° 0.05 m
0.12 m
0.13 m
0.05 m
E24 46.1 ° 0.09 m
0.14 m
0.16 m
0.02 m
E26 19.8 ° 0.29 m
0.41 m
0.33 m
0.04 m
E31 73.2 ° 0.03 m
0.05 m
0.04 m
0.02 m
E33 60.6 ° 0.03 m
0.07 m
0.06 m
0.02 m
Average Galileo: - 0.11 m
0.17 m
0.16 m
0.04 m

SV BeiDou Av Elev MP (B1I) MP (B2I)
C11 79.9 ° 0.11 m
0.06 m
C12 36.0 ° 0.16 m
0.16 m
C13 17.9 ° 0.33 m
0.47 m
C23 47.2 ° 0.09 m
-
C24 22.3 ° 1.44 m
-
C25 71.1 ° 0.51 m
-
C28 16.7 ° 0.57 m
-
Average BeiDou: - 0.46 m
0.23 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 0.07 m
0.03 m
- - - - -
80 - 85 0.23 m
0.07 m
- 0.05 m
- - -
75 - 80 0.13 m
0.08 m
0.05 m
0.05 m
0.02 m
- -
70 - 75 0.07 m
0.09 m
0.05 m
0.03 m
0.03 m
- -
65 - 70 0.08 m
0.04 m
0.07 m
0.06 m
0.02 m
- -
60 - 65 0.13 m
0.04 m
0.10 m
0.07 m
0.03 m
- -
55 - 60 0.07 m
0.05 m
0.09 m
0.08 m
0.03 m
- -
50 - 55 0.06 m
0.06 m
0.09 m
0.14 m
0.03 m
- -
45 - 50 0.08 m
0.07 m
0.13 m
0.14 m
0.04 m
- -
40 - 45 0.10 m
0.16 m
0.15 m
0.14 m
0.03 m
- -
35 - 40 0.11 m
0.15 m
0.21 m
0.20 m
0.03 m
- -
30 - 35 0.17 m
0.14 m
0.20 m
0.17 m
0.10 m
- -
25 - 30 0.38 m
0.21 m
0.28 m
0.21 m
0.07 m
- -
20 - 25 0.24 m
0.22 m
0.31 m
0.35 m
0.07 m
- -
15 - 20 0.42 m
0.30 m
0.33 m
0.39 m
0.07 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 2021/04/05 14:59:59.00

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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