<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-21 -111 07:25:00.000"
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: 95% PACIFIC flags: Multiple candidates for F2o cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.21 (111) 07:25:00</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">
FF202611104210725001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.696" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="9.609" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="2.925" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="220.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="220.000" 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="0.125" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.350" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="245.806" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.050" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.050" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="237.278" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="214.475" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.829" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="32.493" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.627" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="17.546" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="29.830" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.900" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="23">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 2.55 2.575 2.6
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
220.000 222.500 222.500 225.000 227.500 229.583 231.667 233.750 235.833 237.917 240.000 242.500 245.806 249.582 253.936 259.012 265.006 272.191 280.961 291.908 305.955 324.635 350.696
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 66 66 78 78 0 0 0 0 0 54 54 54 78 81 81 84 81 81 72 0 69 63
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="398">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 135.66667 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 161.33333 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 237.278 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0
</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 0.35324875 0.3523882 0.35108605 0.34949994 0.34749252 0.3450799 0.34228173 0.3391207 0.33555436 0.33154994 0.32708573 0.3222145 0.31684378 0.31099588 0.3045735 0.29760364 0.290026 0.28171796 0.27274016 0.2629728 0.2523031 0.24063194 0.22781542 0.21374473 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 0.204 0.21 0.216 0.222 0.228 0.234 0.24 0.246 0.252 0.258 0.264 0.27 0.276 0.282 0.288 0.294 0.3 0.306 0.312 0.318 0.324 0.33 0.336 0.342 0.348 0.354 0.38624066 0.418711 0.45163703 0.4852216 0.51966065 0.555126 0.59181213 0.62988544 0.66953665 0.7109525 0.7543407 0.7998936 0.8478449 0.8984022 0.95179784 1.0082209 1.0678738 1.1308552 1.197233 1.2669154 1.3396558 1.4150233 1.4923571 1.5708128 1.6494435 1.7272449 1.8032327 1.8766166 1.9467517 2.013217 2.075731 2.1341848 2.1885593 2.2389095 2.2853572 2.3280292 2.3670719 2.4026423 2.4348767 2.4639122 2.4898815 2.5128877 2.5330336 2.550413 2.5650947 2.5771465 2.5866177 2.5935497 2.5979724 2.599904 2.6 2.5995739 2.5976048 2.5940888 2.5890863 2.5826578 2.5748641 2.5657659 2.5554233 2.5438962 2.5312436 2.517524 2.5027947 2.4871118 2.4705307 2.4531054 2.4348884 2.415931 2.396283 2.3759925 2.3551068 2.3336713 2.3117294 2.2893238 2.2664952 2.2432828 2.2197242 2.1958556 2.1717117 2.1473255 2.1227293 2.0979526 2.073025 2.0479736 2.022825 1.9976038 1.9723337 1.9470372 1.9217354 1.8964486 1.8711956 1.8459941 1.8208613 1.795813 1.7708638 1.7460277 1.721318 1.6967468 1.6723254 1.6480644 1.6239737 1.6000625 1.576339 1.5528113 1.5294862 1.5063705 1.4834702 1.4607906 1.4383368 1.4161131 1.3941236 1.3723718 1.3508608 1.3295934 1.3085718 1.2877983 1.2672743 1.2470013 1.2269802 1.2072121 1.1876972 1.1684359 1.1494282 1.1306741 1.112173 1.0939244 1.0759276 1.0581815 1.0406853 1.0234376 1.0064371 0.9896822 0.9731715 0.95690316 0.9408754 0.9250864 0.9095341 0.89421654 0.8791315 0.8642768 0.8496503 0.83524966 0.82107246 0.8071164 0.793379 0.77985793 0.7665506 0.75345457 0.7405672 0.72788614 0.7154087 0.7031324 0.6910546 0.67917275 0.6674843 0.65598667 0.6446772 0.6335535 0.6226129 0.6118528 0.6012708 0.59086424 0.58063066 0.5705676 0.56067246 0.5509429 0.5413764 0.5319705 0.5227229 0.5136311 0.50469273 0.49590555 0.48726714 0.47877523 0.47042754 0.46222183 0.45415586 0.44622743 0.43843436 0.4307745 0.42324573 0.41584593 0.40857306 0.40142506 0.39439988 0.38749555 0.3807101 0.3740416 0.3674881 0.36104771 0.3547186 0.3484989 0.34238684 0.33638057 0.3304784 0.32467854 0.3189793 0.313379 0.30787596 0.30246857 0.29715523 0.2919343 0.28680426 0.28176358 0.2768107 0.2719442 0.26716253 0.2624643 0.2578481 0.2533125 0.24885611 0.2444776 0.24017563 0.23594889 0.23179609 0.22771595 0.22370724 0.21976872 0.21589917 0.2120974 0.20836227 0.2046926 0.20108728 0.19754517 0.1940652 0.19064629 0.18728736 0.18398741 0.18074538 0.17756027 0.1744311 0.1713569 0.1683367 0.16536959 0.1624546 0.15959087 0.15677747 0.15401354 0.15129822 0.14863065 0.14601 0.14343545 0.14090618 0.13842145 0.13598041 0.13358235 0.13122651 0.12891212 0.12663849 0.124404885 0.12221061 0.120054975 0.117937304 0.11585693 0.11381321 0.111805476 0.10983312 0.107895516 0.10599205 0.104122125 0.10228515 0.10048054 0.09870774 0.096966185 0.09525533 0.09357463 0.09192356 0.09030159 0.088708214 0.08714293 0.08560524 0.08409467 0.082610734 0.08115296 0.07972089 0.07831408 0.07693208 0.07557445 0.07424077 0.072930604 0.071643546 0.07037919 0.06913713 0.06791699 0.06671837 0.06554089 0.064384185 0.06324788 0.06213162 0.06103506 0.05995784 0.058899626 0.057860084 0.056838877 0.055835694 0.054850206 0.05388211 0.052931093 0.051996857 0.051079106 0.050177548

</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="237.278" Num="5" zHalfNm="214.475" Error="2.476">
-53.351 5.483 -3.882 1.699 -0.227
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="10" 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="6505.667" A="-2.30120505E11" B="7.1024848E7" C="-5480.187" Error="0.00139"/>
<QuasiParabolic ID="2" StartDistance="6505.667" EndDistance="6531.333" A="0.0" B="-317.15433" C="0.08876199" Error="0.00508"/>
<QuasiParabolic ID="3" StartDistance="6531.333" EndDistance="6533.0" A="1.13712208E12" B="-3.4823872E8" C="26661.69" Error="0.0147"/>
<QuasiParabolic ID="4" StartDistance="6533.0" EndDistance="6555.0" A="3.8536188E10" B="-1.1919756E7" C="921.681" Error="0.0193"/>
<QuasiParabolic ID="5" StartDistance="6555.0" EndDistance="6558.0" A="4.9954559E12" B="-1.52432845E9" C="116284.664" Error="0.0136"/>
<QuasiParabolic ID="6" StartDistance="6558.0" EndDistance="6569.0" A="4.13768955E12" B="-1.26273459E9" C="96340.03" Error="0.0183"/>
<QuasiParabolic ID="7" StartDistance="6569.0" EndDistance="6572.0" A="1.13984426E13" B="-3.47334605E9" C="264600.9" Error="0.00479"/>
<QuasiParabolic ID="8" StartDistance="6572.0" EndDistance="6585.0" A="1.36125675E13" B="-4.14715162E9" C="315864.25" Error="0.0142"/>
<QuasiParabolic ID="9" StartDistance="6585.0" EndDistance="6607.278" A="-1.24353878E13" B="3.76414874E9" C="-284841.9" Error="0.00624"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="77.0" Depth="0.154"/>
<TopsideChapman PeakHeight="237.278" PeakDensity="83870.97" PeakScaleHeight="17.546" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
