<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-23 -113 01:30:00.000"
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" >
2026.04.23 (113) 01:30:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.20" 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">
FF202611304230130001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.506" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="9.116" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.275" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.275" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="2.925" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="260.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="260.000" 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="0.225" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.475" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="295.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.275" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.275" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="261.623" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="242.385" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.066" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="27.404" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.534" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="14.527" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="27.620" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.090" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="14">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.275 2.3 2.325 2.35 2.375 2.4 2.425 2.45 2.475 2.5 2.525 2.55 2.575 2.6
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
260.000 262.500 267.500 270.000 275.000 280.000 285.000 290.000 295.000 302.500 310.000 317.500 325.000 334.699
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 51 51 51 0 0 0 66 69 0 0 66 69 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 -7.8125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="377">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 261.623 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0
</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 0.35362422 0.35313663 0.3524263 0.35157037 0.35049725 0.34921128 0.34779054 0.3460947 0.34420434 0.34212717 0.33980232 0.33724248 0.33452845 0.33153966 0.32836035 0.32488185 0.3211927 0.3171983 0.31299222 0.3084957 0.30364835 0.2985621 0.29312387 0.2873491 0.2811647 0.27462557 0.26766586 0.26023185 0.25232056 0.24386445 0.23482597 0.2251332 0.21472648 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 0.2044 0.2088 0.2132 0.2176 0.222 0.2264 0.2308 0.2352 0.2396 0.244 0.2484 0.2528 0.2572 0.2616 0.266 0.2704 0.2748 0.2792 0.2836 0.288 0.2924 0.2968 0.3012 0.3056 0.31 0.3144 0.3188 0.3232 0.3276 0.332 0.3364 0.3408 0.3452 0.3496 0.354 0.3879628 0.42234868 0.45758316 0.49395156 0.53167087 0.5709318 0.6118856 0.6546597 0.6993779 0.74612784 0.79498804 0.84600323 0.89919645 0.9545784 1.0121114 1.0717275 1.1333379 1.1967949 1.2619278 1.328519 1.3963459 1.4651277 1.534568 1.6043439 1.6741078 1.7435328 1.8122739 1.8799571 1.9462526 2.0108132 2.0733316 2.1334755 2.1909654 2.2455275 2.2969058 2.3448563 2.3891764 2.4296708 2.466161 2.4984934 2.526534 2.5501738 2.5693147 2.583884 2.5938208 2.599089 2.6 2.59983 2.597764 2.5934362 2.586953 2.578421 2.5679476 2.555639 2.5416005 2.5259364 2.5087485 2.4901376 2.4702013 2.4490345 2.4267297 2.4033768 2.379062 2.3538682 2.327876 2.3011622 2.2738 2.2458596 2.2174084 2.18851 2.1592247 2.1296103 2.099721 2.069608 2.03932 2.0089025 1.9783986 1.9478482 1.9172893 1.8867569 1.8562839 1.8259012 1.7956368 1.7655174 1.7355672 1.7058089 1.6762631 1.6469489 1.6178838 1.5890836 1.5605626 1.5323341 1.5044099 1.4768006 1.4495153 1.4225628 1.3959502 1.3696839 1.3437694 1.3182114 1.2930138 1.2681798 1.2437117 1.2196115 1.1958804 1.1725192 1.1495279 1.1269064 1.104654 1.0827694 1.0612513 1.0400978 1.0193069 0.99887604 0.97880256 0.9590836 0.939716 0.9206964 0.90202135 0.88368714 0.86568993 0.8480259 0.830691 0.81368095 0.7969917 0.7806188 0.764558 0.74880487 0.7333549 0.7182037 0.70334667 0.68877935 0.67449725 0.6604957 0.64677024 0.63331634 0.6201295 0.6072052 0.59453905 0.5821265 0.56996316 0.55804473 0.54636675 0.534925 0.5237152 0.5127331 0.5019745 0.49143538 0.4811116 0.47099912 0.46109396 0.45139223 0.44189006 0.4325836 0.4234691 0.41454288 0.40580127 0.39724064 0.3888575 0.38064837 0.37260976 0.36473837 0.35703087 0.34948394 0.34209445 0.3348592 0.32777512 0.32083914 0.31404832 0.3073997 0.30089036 0.29451755 0.28827843 0.2821703 0.27619046 0.27033633 0.26460528 0.25899482 0.25350246 0.24812578 0.24286237 0.23770991 0.23266609 0.22772866 0.22289544 0.21816425 0.21353297 0.20899951 0.20456186 0.200218 0.195966 0.19180392 0.1877299 0.18374208 0.17983866 0.17601787 0.17227799 0.16861732 0.1650342 0.16152701 0.15809414 0.15473402 0.15144514 0.148226 0.14507511 0.14199106 0.13897243 0.13601784 0.13312595 0.13029541 0.12752496 0.1248133 0.12215921 0.11956148 0.11701889 0.1145303 0.11209456 0.10971055 0.10737718 0.105093375 0.10285809 0.100670286 0.098528974 0.096433155 0.09438188 0.09237419 0.090409175 0.08848592 0.086603545 0.08476118 0.08295798 0.08119312 0.07946577 0.07777515 0.076120466 0.07450097 0.07291591 0.07136455 0.06984618 0.068360105 0.066905625 0.06548208 0.064088814 0.06272517 0.061390534 0.060084283 0.05880582 0.057554543 0.056329884 0.055131275 0.053958163 0.052810006 0.051686272 0.050586443

</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="2.6" PeakHeight="261.623" Num="5" zHalfNm="242.385" Error="1.666">
-46.446 -0.079 -0.396 0.264 0.034
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="18" 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="6515.0" A="-1.24071371E11" B="3.8293632E7" C="-2954.6301" Error="0.00182"/>
<QuasiParabolic ID="2" StartDistance="6515.0" EndDistance="6550.0" A="0.0" B="473.7926" C="-0.032683726" Error="0.00872"/>
<QuasiParabolic ID="3" StartDistance="6550.0" EndDistance="6552.0" A="-1.52974406E12" B="4.66905056E8" C="-35626.887" Error="0.0365"/>
<QuasiParabolic ID="4" StartDistance="6552.0" EndDistance="6572.0" A="9.1251638E10" B="-2.790435E7" C="2133.2954" Error="0.0389"/>
<QuasiParabolic ID="5" StartDistance="6572.0" EndDistance="6573.0" A="-9.013366E11" B="2.7416144E8" C="-20847.973" Error="0.0"/>
<QuasiParabolic ID="6" StartDistance="6573.0" EndDistance="6574.0" A="9.7539018E11" B="-2.96879712E8" C="22590.422" Error="4.01E-11"/>
<QuasiParabolic ID="7" StartDistance="6574.0" EndDistance="6575.0" A="-9.0178532E11" B="2.74211104E8" C="-20845.143" Error="3.9E-11"/>
<QuasiParabolic ID="8" StartDistance="6575.0" EndDistance="6576.0" A="9.7598629E11" B="-2.96974176E8" C="22591.0" Error="0.0"/>
<QuasiParabolic ID="9" StartDistance="6576.0" EndDistance="6577.0" A="-9.0233156E11" B="2.742904E8" C="-20844.564" Error="0.0"/>
<QuasiParabolic ID="10" StartDistance="6577.0" EndDistance="6578.0" A="9.7666623E11" B="-2.9709408E8" C="22593.512" Error="0.0"/>
<QuasiParabolic ID="11" StartDistance="6578.0" EndDistance="6579.0" A="-9.0280827E11" B="2.74348448E8" C="-20842.375" Error="0.0"/>
<QuasiParabolic ID="12" StartDistance="6579.0" EndDistance="6580.0" A="1.04122404E12" B="-3.1663264E8" C="24071.828" Error="0.0"/>
<QuasiParabolic ID="13" StartDistance="6580.0" EndDistance="6582.0" A="-1.36512799E12" B="4.14781376E8" C="-31506.744" Error="0.00127"/>
<QuasiParabolic ID="14" StartDistance="6582.0" EndDistance="6593.0" A="4.6787283E12" B="-1.42169882E9" C="108001.02" Error="0.0396"/>
<QuasiParabolic ID="15" StartDistance="6593.0" EndDistance="6613.0" A="9.5960884E12" B="-2.91339008E9" C="221127.9" Error="0.0333"/>
<QuasiParabolic ID="16" StartDistance="6613.0" EndDistance="6622.0" A="-3.54504514E12" B="1.06094336E9" C="-79366.07" Error="0.00668"/>
<QuasiParabolic ID="17" StartDistance="6622.0" EndDistance="6631.623" A="-2.22328269E13" B="6.7050936E9" C="-505532.66" Error="0.00276"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="105.0" Depth="0.154"/>
<TopsideChapman PeakHeight="261.623" PeakDensity="83870.97" PeakScaleHeight="14.527" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
