<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-04 -035 05:45:00.000"
URSICode="SMK29"
StationName="Santa Maria"
GeoLatitude="-29.69"
GeoLongitude="307.81"
Source="Ionosonde"
SourceType="DPS-4D"
ScalerType="auto">
<SystemInfo UMLStationID="129">
<FrequencyStepping StartFrequency="2.0" StopFrequency="15.0">
<LinearStepping Step="0.025" Units="MHz" />
</FrequencyStepping>
<RangeStepping StartRange="80.0" StopRange="1360.0" >
<LinearStepping Step="2.5" Units="km" />
</RangeStepping>
<AutoScaler Name="Artist5" Version="500200" ArtistFlags="2 2 0 0 0 0 0 0 0 55 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 20% PACIFIC flags: F2x cusp not found, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, F2 cusps do not match, Unidentified traces above foF2</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.02.04 (035) 05:45:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.15" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.95" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="85.88234" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202603502040545001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="23" >
<URSI ID="00" Val="6.025" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.987" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.023" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.400" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.400" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="230.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="230.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="90" Val="110.000" Name="hmE" Units="km" QL="/" DL="/" />
<URSI ID="83" Val="20.000" Name="yE" Units="km" QL="/" DL="/" />
<URSI ID="86" Val="0.075" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="5.875" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="245.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.400" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.400" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="235.358" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="223.289" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.953" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="17.925" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.976" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="10.583" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="19.420" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.550" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="106">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
3.4 3.425 3.45 3.475 3.5 3.525 3.55 3.575 3.6 3.625 3.65 3.675 3.7 3.725 3.75 3.775 3.8 3.825 3.85 3.875 3.9 3.925 3.95 3.975 4.0 4.025 4.05 4.075 4.1 4.125 4.15 4.175 4.2 4.225 4.25 4.275 4.3 4.325 4.35 4.375 4.4 4.425 4.45 4.475 4.5 4.525 4.55 4.575 4.6 4.625 4.65 4.675 4.7 4.725 4.75 4.775 4.8 4.825 4.85 4.875 4.9 4.925 4.95 4.975 5.0 5.025 5.05 5.075 5.1 5.125 5.15 5.175 5.2 5.225 5.25 5.275 5.3 5.325 5.35 5.375 5.4 5.425 5.45 5.475 5.5 5.525 5.55 5.575 5.6 5.625 5.65 5.675 5.7 5.725 5.75 5.775 5.8 5.825 5.85 5.875 5.9 5.925 5.95 5.975 6.0 6.025
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
230.000 230.000 230.000 230.000 230.833 231.667 232.500 232.500 232.625 232.750 232.875 233.000 233.125 233.250 233.375 233.500 233.625 233.750 233.875 234.000 234.125 234.250 234.375 234.500 234.625 234.750 234.875 235.000 235.000 235.000 235.833 236.667 237.500 242.500 237.500 240.000 240.000 240.000 240.000 240.000 242.500 242.500 242.500 242.500 242.500 242.500 242.500 242.500 241.250 240.000 240.000 240.000 240.833 241.667 242.500 244.167 245.833 247.500 247.500 245.000 246.667 248.333 250.000 250.000 250.000 247.500 247.500 247.500 247.500 247.500 247.500 247.500 247.500 247.500 247.500 247.500 247.500 247.500 249.375 251.250 253.125 255.000 255.000 255.000 255.000 252.500 252.500 252.500 252.500 252.500 252.500 252.500 252.500 252.500 252.500 247.500 245.000 252.500 245.000 245.000 252.500 252.500 253.750 255.000 258.530 291.967
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
102 99 99 90 84 87 90 90 84 81 0 78 81 90 90 0 90 0 0 0 102 105 108 93 93 90 90 105 108 96 90 90 93 93 93 99 99 99 96 99 87 0 72 75 75 96 96 69 72 93 99 99 96 99 87 93 99 108 105 66 72 66 60 0 66 72 72 66 72 75 72 72 69 102 108 111 105 102 105 0 72 66 63 0 69 69 63 72 72 114 114 75 69 108 111 69 69 108 99 105 108 108 105 108 105 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 -1.5625 1.5625 1.5625 1.5625 -1.5625 -1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 -1.5625 1.5625 -1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 -1.5625 -1.5625 1.5625 1.5625 -1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 -1.5625 -1.5625 -1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 -1.5625 -1.5625 1.5625 1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 -1.5625 -1.5625 1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 -1.5625 1.5625 1.5625 -1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="323">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 235.358 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.21213934 0.23390245 0.2526677 0.26895854 0.28319094 0.29565945 0.30659118 0.31614733 0.32445762 0.331616 0.33769703 0.34275886 0.34684667 0.3499937 0.352225 0.3535571 0.354 0.353812 0.35339895 0.35261247 0.3516065 0.35023698 0.34851307 0.34651887 0.34419376 0.34155348 0.33854687 0.33526585 0.33153415 0.32752004 0.32306805 0.31823066 0.3130061 0.3072951 0.30113927 0.29447237 0.28732234 0.2796049 0.2711702 0.2621697 0.25230387 0.24165411 0.23006094 0.21740833 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2055 0.211 0.2165 0.222 0.2275 0.233 0.2385 0.244 0.2495 0.255 0.2605 0.266 0.2715 0.277 0.2825 0.288 0.2935 0.299 0.3045 0.31 0.3155 0.321 0.3265 0.332 0.3375 0.343 0.3485 0.354 0.413264 0.47305396 0.53669685 0.6061527 0.6829671 0.76837236 0.86328053 0.9681516 1.082852 1.2066772 1.3385017 1.4769278 1.6206164 1.7684015 1.919314 2.072676 2.2279983 2.3849804 2.5434425 2.7032938 2.8645234 3.0271382 3.191221 3.3567872 3.5239575 3.69279 3.863357 4.035666 4.2097206 4.3854427 4.5626426 4.740975 4.9198556 5.098268 5.2746606 5.446537 5.6099358 5.7588716 5.884659 5.976055 6.0215106 6.025 6.0228624 6.0112987 5.990266 5.9604053 5.922356 5.8767514 5.8242126 5.765346 5.7007384 5.630955 5.556539 5.4780073 5.3958507 5.3105335 5.2224936 5.132141 5.0398607 4.946009 4.8509192 4.7548985 4.6582303 4.561176 4.4639735 4.3668423 4.26998 4.173568 4.077767 3.982725 3.8885717 3.7954245 3.7033865 3.6125486 3.52299 3.4347801 3.3479779 3.2626336 3.178789 3.0964782 3.0157294 2.9365635 2.8589957 2.7830367 2.7086916 2.635962 2.564845 2.4953353 2.4274235 2.3610978 2.296344 2.2331457 2.171485 2.1113415 2.0526943 1.9955207 1.9397972 1.8854992 1.8326015 1.7810783 1.7309034 1.68205 1.6344912 1.5882 1.5431492 1.4993116 1.4566602 1.4151677 1.3748074 1.3355527 1.2973772 1.2602547 1.2241595 1.1890662 1.1549495 1.1217849 1.0895481 1.0582153 1.0277628 0.9981679 0.9694079 0.9414608 0.9143049 0.88791907 0.86228263 0.8373752 0.81317717 0.7896691 0.7668321 0.74464774 0.72309804 0.7021655 0.6818329 0.6620836 0.64290136 0.62427026 0.60617495 0.5886003 0.57153165 0.55495477 0.53885573 0.523221 0.5080375 0.49329236 0.4789731 0.46506757 0.45156404 0.43845102 0.42571732 0.41335213 0.4013449 0.3896853 0.37836343 0.3673696 0.3566943 0.34632847 0.33626318 0.32648975 0.31699976 0.3077851 0.29883775 0.29015008 0.28171456 0.27352387 0.265571 0.257849 0.25035128 0.24307129 0.23600274 0.22913954 0.22247571 0.21600549 0.20972328 0.20362361 0.1977012 0.1919509 0.18636775 0.18094687 0.17568357 0.17057328 0.16561155 0.16079406 0.15611665 0.15157522 0.14716586 0.1428847 0.13872804 0.13469225 0.13077384 0.12696937 0.12327555 0.11968915 0.11620707 0.11282626 0.109543785 0.106356785 0.103262484 0.10025819 0.09734128 0.09450922 0.09175955 0.089089856 0.08649783 0.0839812 0.08153778 0.07916545 0.076862134 0.07462582 0.072454564 0.070346475 0.06829972 0.06631251 0.06438311 0.06250984 0.060691077 0.058925226 0.057210747 0.055546153 0.053929985 0.05236084 0.05083735

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.354" PeakHeight="110.0" Num="3" Error="0.0">
-18.791 2.435 -0.142
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.354" EndFrequency="6.025" PeakHeight="235.358" Num="5" zHalfNm="223.289" Error="0.748">
-38.044 -6.118 4.247 -2.05 0.607
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="14" EarthRadius="6370.0">
<QuasiParabolic ID="0" StartDistance="6460.0205" EndDistance="6480.001" A="-5.5027394E11" B="1.69837632E8" C="-13104.63" Error="0.0016"/>
<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6508.0" A="-1.93482834E11" B="5.9716924E7" C="-4607.662" Error="0.00161"/>
<QuasiParabolic ID="2" StartDistance="6508.0" EndDistance="6536.0" A="0.0" B="34.945858" C="0.03465333" Error="5.75E-4"/>
<QuasiParabolic ID="3" StartDistance="6536.0" EndDistance="6537.0" A="-3.82115696E12" B="1.16907162E9" C="-89418.46" Error="0.0"/>
<QuasiParabolic ID="4" StartDistance="6537.0" EndDistance="6539.0" A="1.63896269E12" B="-5.01456E8" C="38356.336" Error="0.0195"/>
<QuasiParabolic ID="5" StartDistance="6539.0" EndDistance="6541.0" A="-8.1493033E11" B="2.4908472E8" C="-19033.229" Error="0.0176"/>
<QuasiParabolic ID="6" StartDistance="6541.0" EndDistance="6563.0" A="8.3435626E10" B="-2.560292E7" C="1964.1454" Error="0.0188"/>
<QuasiParabolic ID="7" StartDistance="6563.0" EndDistance="6565.0" A="1.91623279E13" B="-5.83968E9" C="444907.7" Error="9.59E-10"/>
<QuasiParabolic ID="8" StartDistance="6565.0" EndDistance="6567.0" A="1.1766735E13" B="-3.58664269E9" C="273313.1" Error="0.00502"/>
<QuasiParabolic ID="9" StartDistance="6567.0" EndDistance="6571.0" A="2.03379452E13" B="-6.1970314E9" C="472063.56" Error="0.0119"/>
<QuasiParabolic ID="10" StartDistance="6571.0" EndDistance="6586.0" A="5.0512947E13" B="-1.53813258E10" C="1170914.1" Error="0.0147"/>
<QuasiParabolic ID="11" StartDistance="6586.0" EndDistance="6594.0" A="7.0387367E13" B="-2.14166815E10" C="1629110.0" Error="0.00156"/>
<QuasiParabolic ID="12" StartDistance="6594.0" EndDistance="6602.0" A="4.1054347E13" B="-1.25197988E10" C="954490.4" Error="0.00913"/>
<QuasiParabolic ID="13" StartDistance="6602.0" EndDistance="6605.358" A="-5.38001495E14" B="1.6289851E11" C="-1.233075E7" Error="0.00286"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="84.0" Depth="0.154"/>
<TopsideChapman PeakHeight="235.358" PeakDensity="450379.97" PeakScaleHeight="10.583" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
