<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-16 -106 07:40:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 100%</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.16 (106) 07:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.19" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.98" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202610604160740001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.525" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.720" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="9.394" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="2.775" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="225.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="225.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.375" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="260.887" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="235.000" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="215.732" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.754" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="27.499" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.506" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="14.806" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="26.390" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.560" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="22">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.0 2.025 2.05 2.075 2.1 2.125 2.15 2.175 2.2 2.225 2.25 2.275 2.3 2.325 2.35 2.375 2.4 2.425 2.45 2.475 2.5 2.525
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
225.000 225.000 225.000 227.500 228.750 230.000 232.500 235.000 237.500 240.000 242.500 245.000 248.383 252.118 256.262 260.887 266.081 271.956 278.656 286.368 295.339 305.905
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 78 75 63 0 75 0 63 0 0 0 54 54 51 0 0 0 0 63 66 0 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="356">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 136.83333 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 163.66667 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 190.5 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0
</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 0.35332385 0.35253775 0.3513833 0.34986797 0.34800196 0.34587008 0.3433416 0.34043694 0.33717975 0.3335292 0.3294542 0.3250611 0.3201454 0.31483623 0.30908883 0.30277678 0.29597685 0.28861925 0.2806141 0.2719544 0.2625736 0.25233817 0.24117032 0.22898808 0.2156547 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 0.20191304 0.20765217 0.2133913 0.21913044 0.22486956 0.2306087 0.23634782 0.24208696 0.24782608 0.25356522 0.25930434 0.26504347 0.27078262 0.27652174 0.28226086 0.288 0.29373914 0.29947826 0.3052174 0.3109565 0.31669566 0.32243478 0.3281739 0.33391306 0.33965218 0.3453913 0.35113043 0.354 0.3681203 0.39904466 0.43334538 0.47061542 0.51040316 0.55231756 0.59608406 0.6415726 0.6887187 0.73758453 0.78823197 0.84079665 0.89541966 0.9522372 1.0114174 1.0730938 1.1373634 1.2042828 1.2738292 1.3458896 1.4201957 1.4963431 1.5737561 1.6517007 1.7293351 1.8057619 1.8801045 1.9515847 2.019543 2.0834963 2.1431105 2.1982121 2.2487142 2.294641 2.3360407 2.3730276 2.4057105 2.4342113 2.4586484 2.4791281 2.4957533 2.508597 2.5177245 2.5231838 2.525 2.525 2.523891 2.5206285 2.5153093 2.5080316 2.4988935 2.4879928 2.475427 2.4612918 2.445682 2.4286907 2.410409 2.3909252 2.3703258 2.3486946 2.3261125 2.3026583 2.2784069 2.2534308 2.2278 2.2015805 2.1748366 2.1476288 2.120015 2.0920498 2.0637858 2.0352721 2.0065558 1.9776808 1.9486887 1.9196187 1.8905075 1.8613894 1.8322968 1.8032601 1.7743069 1.7454636 1.7167544 1.688202 1.659827 1.6316485 1.6036844 1.5759509 1.5484624 1.5212327 1.4942741 1.4675975 1.4412129 1.4151292 1.3893545 1.3638954 1.3387585 1.3139488 1.2894708 1.2653285 1.241525 1.2180629 1.1949439 1.1721696 1.1497407 1.1276578 1.1059207 1.084529 1.0634819 1.0427783 1.0224165 1.0023949 0.9827114 0.9633636 0.94434905 0.925665 0.9073085 0.88927644 0.8715656 0.8541725 0.8370938 0.8203257 0.8038645 0.78770643 0.77184755 0.756284 0.7410117 0.72602665 0.7113247 0.6969018 0.6827538 0.6688765 0.65526587 0.6419176 0.62882763 0.6159917 0.60340583 0.59106576 0.57896745 0.5671068 0.55547976 0.5440823 0.53291047 0.52196026 0.5112278 0.5007092 0.49040058 0.48029816 0.47039822 0.46069703 0.45119092 0.44187626 0.43274954 0.42380717 0.41504574 0.40646178 0.39805195 0.38981292 0.3817414 0.3738342 0.36608812 0.35850006 0.35106695 0.34378576 0.33665353 0.32966733 0.32282427 0.31612158 0.30955642 0.30312613 0.296828 0.2906594 0.28461775 0.27870053 0.27290523 0.2672294 0.26167065 0.25622663 0.25089502 0.24567355 0.24056001 0.23555219 0.23064797 0.22584522 0.2211419 0.21653599 0.2120255 0.20760848 0.20328303 0.19904725 0.19489937 0.19083753 0.18686 0.18296503 0.17915095 0.17541608 0.17175882 0.16817753 0.16467069 0.16123673 0.1578742 0.15458156 0.15135743 0.14820036 0.14510898 0.14208195 0.1391179 0.13621554 0.13337362 0.13059087 0.12786606 0.125198 0.12258553 0.12002746 0.117522694 0.11507011 0.11266864 0.110317215 0.10801479 0.10576036 0.10355292 0.10139151 0.09927515 0.09720292 0.095173895 0.09318718 0.0912419 0.08933719 0.08747221 0.085646115 0.083858125 0.082107425 0.08039325 0.07871483 0.07707143 0.07546232 0.07388678 0.07234412 0.07083364 0.06935469 0.067906596 0.06648872 0.06510044 0.06374113 0.06241019 0.061107032 0.059831068 0.05858174 0.05735849 0.05616077 0.05498805 0.053839814 0.052715544 0.051614743 0.050536923

</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="2.525" PeakHeight="235.0" Num="5" zHalfNm="215.732" Error="1.821">
-45.82 2.724 -2.189 1.161 -0.376
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="8" 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="6506.833" A="-2.10612257E11" B="6.5003784E7" C="-5015.5986" Error="0.00148"/>
<QuasiParabolic ID="2" StartDistance="6506.833" EndDistance="6533.667" A="0.0" B="-1390.2745" C="0.253683" Error="0.0224"/>
<QuasiParabolic ID="3" StartDistance="6533.667" EndDistance="6555.0" A="9.3501415E10" B="-2.8701834E7" C="2202.6516" Error="0.0224"/>
<QuasiParabolic ID="4" StartDistance="6555.0" EndDistance="6558.0" A="-1.06124516E12" B="3.23623584E8" C="-24671.904" Error="0.0141"/>
<QuasiParabolic ID="5" StartDistance="6558.0" EndDistance="6574.0" A="5.7976082E12" B="-1.768128E9" C="134809.0" Error="0.0448"/>
<QuasiParabolic ID="6" StartDistance="6574.0" EndDistance="6588.0" A="1.39166451E13" B="-4.23817242E9" C="322673.66" Error="0.0244"/>
<QuasiParabolic ID="7" StartDistance="6588.0" EndDistance="6605.0" A="-1.70547489E13" B="5.1641938E9" C="-390924.25" Error="0.00949"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="80.5" Depth="0.154"/>
<TopsideChapman PeakHeight="235.0" PeakDensity="79102.05" PeakScaleHeight="14.806" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
