<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-07 -097 06:55:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 50% PACIFIC flags: F2o cusp not found, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.07 (097) 06:55:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.19" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.97" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202609704070655001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.700" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="16.652" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.025" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.025" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.825" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="254.893" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="254.893" 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="4.300" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="270.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.025" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.025" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="256.376" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="238.875" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.030" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="25.154" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.423" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="13.357" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="24.110" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.440" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="20">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
254.893 255.660 256.505 257.438 258.475 259.633 260.937 262.413 264.100 266.047 268.317 270.000 275.000 277.500 282.500 290.000 297.500 310.000 327.500 356.283
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 0 0 90 0 90 0 0 90 90 0 63 78 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-10.9375 -1.5625 -1.5625 10.9375 -1.5625 10.9375 -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="382">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 143.80833 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 177.61667 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 211.425 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 256.376 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0
</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 0.3538872 0.35354906 0.35306174 0.35235173 0.35142186 0.35027584 0.34891838 0.3472823 0.34552038 0.3434953 0.34121817 0.3387703 0.33602604 0.3330704 0.3298541 0.32639852 0.3227263 0.31868136 0.31442204 0.30981275 0.3049602 0.29970706 0.29420564 0.28827178 0.28193587 0.27517456 0.26801684 0.260345 0.2521242 0.24336895 0.23392434 0.22381993 0.21298 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 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.20174612 0.20630121 0.2108563 0.2154114 0.21996647 0.22452156 0.22907665 0.23363174 0.23818684 0.24274193 0.24729702 0.2518521 0.2564072 0.26096228 0.26551738 0.27007246 0.27462757 0.27918264 0.28373775 0.28829283 0.29284793 0.297403 0.30195808 0.3065132 0.31106827 0.31562337 0.32017845 0.32473356 0.32928863 0.33384374 0.3383988 0.34295392 0.347509 0.35206407 0.354 0.37255976 0.40987527 0.45424122 0.5059352 0.5645715 0.6293353 0.69929385 0.77375835 0.8522792 0.93471134 1.0210881 1.1115565 1.2063679 1.305801 1.4102012 1.5198406 1.635048 1.7559875 1.8828127 2.0154772 2.1537378 2.2970855 2.444751 2.5955956 2.7482128 2.9010024 3.0522747 3.2002592 3.34341 3.4803245 3.6099622 3.731457 3.8443062 3.948139 4.042822 4.128278 4.2045665 4.271798 4.330088 4.379597 4.420442 4.4527526 4.476636 4.4921727 4.499416 4.5 4.49905 4.4936695 4.4837427 4.4695077 4.451202 4.429064 4.403328 4.3742275 4.34199 4.3068395 4.2689924 4.228661 4.186049 4.141354 4.094765 4.046465 3.9966273 3.9454186 3.8929968 3.839512 3.7851076 3.7299178 3.6740696 3.6176834 3.5608714 3.503739 3.4463859 3.3889034 3.3313782 3.27389 3.2165132 3.1593165 3.1023633 3.045712 2.9894164 2.9335258 2.878085 2.823135 2.7687125 2.7148514 2.6615818 2.6089303 2.5569212 2.5055757 2.454912 2.4049463 2.3556926 2.3071623 2.2593656 2.21231 2.1660018 2.1204457 2.0756447 2.0316007 1.9883142 1.9457844 1.9040102 1.8629885 1.822716 1.7831883 1.7444006 1.7063471 1.6690215 1.6324168 1.596526 1.5613412 1.5268543 1.4930567 1.4599396 1.4274942 1.395711 1.3645806 1.3340933 1.3042395 1.2750092 1.2463925 1.2183791 1.1909595 1.1641229 1.1378598 1.1121598 1.0870129 1.062409 1.0383383 1.0147908 0.9917565 0.96922576 0.94718885 0.9256362 0.9045583 0.88394576 0.8637893 0.8440798 0.8248082 0.8059655 0.78754294 0.7695319 0.75192386 0.7347103 0.71788305 0.70143396 0.685355 0.6696383 0.65427613 0.6392609 0.6245851 0.61024153 0.5962229 0.5825221 0.5691323 0.55604666 0.54325855 0.5307614 0.51854885 0.50661457 0.49495238 0.48355633 0.47242042 0.46153894 0.45090616 0.44051653 0.43036467 0.42044517 0.41075286 0.40128267 0.39202952 0.38298857 0.37415504 0.36552423 0.35709155 0.34885255 0.3408028 0.33293802 0.32525402 0.3177467 0.31041205 0.3032461 0.29624504 0.2894051 0.28272265 0.27619404 0.26981577 0.2635844 0.25749663 0.2515491 0.24573863 0.2400621 0.23451643 0.2290986 0.22380571 0.21863489 0.21358334 0.20864831 0.20382713 0.19911718 0.19451591 0.19002084 0.1856295 0.18133953 0.17714858 0.17305438 0.1690547 0.16514738 0.16133027 0.1576013 0.15395845 0.15039973 0.14692321 0.14352699 0.14020921 0.13696808 0.1338018 0.1307087 0.12768704 0.1247352 0.121851556 0.11903454 0.11628263 0.1135943 0.11096809 0.10840257 0.105896346 0.10344804 0.101056315 0.098719865 0.09643742 0.09420772 0.092029564 0.08990175 0.08782312 0.085792534 0.08380889 0.0818711 0.0799781 0.07812886 0.07632237 0.07455764 0.07283371 0.07114963 0.069504485 0.06789737 0.06632741 0.06479374 0.063295536 0.06183197 0.060402237 0.059005562 0.057641175 0.056308337 0.05500631 0.053734392 0.052491877 0.051278092 0.050092373

</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="4.5" PeakHeight="256.376" Num="5" zHalfNm="238.875" Error="1.263">
-46.393 2.813 -1.901 1.023 -0.493
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="12" 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="6513.808" A="-1.3293296E11" B="4.1028692E7" C="-3165.6687" Error="0.00168"/>
<QuasiParabolic ID="2" StartDistance="6513.808" EndDistance="6547.617" A="0.0" B="1749.2363" C="-0.2285077" Error="0.0338"/>
<QuasiParabolic ID="3" StartDistance="6547.617" EndDistance="6581.0" A="2.02925281E10" B="-6292829.5" C="487.78955" Error="0.0338"/>
<QuasiParabolic ID="4" StartDistance="6581.0" EndDistance="6582.0" A="2.24157971E13" B="-6.8124027E9" C="517590.8" Error="4.7E-10"/>
<QuasiParabolic ID="5" StartDistance="6582.0" EndDistance="6583.0" A="4.5180345E12" B="-1.37400627E9" C="104464.37" Error="0.0"/>
<QuasiParabolic ID="6" StartDistance="6583.0" EndDistance="6584.0" A="1.22614511E13" B="-3.72655565E9" C="283148.06" Error="0.0"/>
<QuasiParabolic ID="7" StartDistance="6584.0" EndDistance="6587.0" A="1.11256933E13" B="-3.38155034E9" C="256947.77" Error="0.00274"/>
<QuasiParabolic ID="8" StartDistance="6587.0" EndDistance="6597.0" A="2.13235836E13" B="-6.4779192E9" C="491984.12" Error="0.0362"/>
<QuasiParabolic ID="9" StartDistance="6597.0" EndDistance="6602.0" A="6.1254207E13" B="-1.85836114E10" C="1409499.0" Error="0.00704"/>
<QuasiParabolic ID="10" StartDistance="6602.0" EndDistance="6612.0" A="3.7930677E13" B="-1.15180155E10" C="874388.8" Error="0.0217"/>
<QuasiParabolic ID="11" StartDistance="6612.0" EndDistance="6626.376" A="-6.8163513E13" B="2.05733908E10" C="-1552366.1" Error="0.00923"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="101.425" Depth="0.154"/>
<TopsideChapman PeakHeight="256.376" PeakDensity="251240.69" PeakScaleHeight="13.357" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
