<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-23 -113 02:30:00.000"
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: 95% PACIFIC flags: Multiple candidates for F2x cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.23 (113) 02:30:00</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">
FF202611304230230001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.475" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.415" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="8.452" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="2.825" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="277.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="277.500" 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="2.350" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="307.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="273.474" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="251.746" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.775" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="30.905" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.547" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="16.400" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="31.250" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.080" 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" >
2.15 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
277.500 280.500 283.500 286.500 289.500 292.500 300.000 303.750 307.500 313.750 319.588 325.936 332.862 340.451
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
81 0 0 0 0 54 51 0 51 0 66 69 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="416">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 147.32434 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 184.64867 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 221.973 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 273.474 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0
</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 0.35321164 0.35265058 0.35186794 0.350941 0.34979865 0.3485186 0.34703198 0.34541664 0.34353504 0.3415376 0.33936062 0.33694494 0.33437055 0.33151647 0.3285304 0.3252983 0.32190278 0.3182421 0.31434497 0.31018546 0.30580062 0.30112535 0.29613823 0.2909276 0.28537783 0.27949977 0.27332765 0.2667038 0.25970122 0.25226772 0.24433059 0.23588872 0.22695158 0.21729219 0.20705873 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 0.2 0.2 0.2 0.2014496 0.2055756 0.20970158 0.21382758 0.21795358 0.22207958 0.22620557 0.23033156 0.23445755 0.23858355 0.24270955 0.24683554 0.25096154 0.25508752 0.25921354 0.26333952 0.2674655 0.2715915 0.2757175 0.2798435 0.2839695 0.28809547 0.2922215 0.29634747 0.30047348 0.30459946 0.30872545 0.31285146 0.31697744 0.32110345 0.32522944 0.32935545 0.33348143 0.3376074 0.34173343 0.3458594 0.34998542 0.354 0.35478482 0.38432214 0.41470802 0.4460827 0.47854304 0.51218235 0.54708934 0.5833171 0.62094235 0.65999764 0.70054275 0.7425851 0.78616244 0.83126575 0.8779046 0.926047 0.97565717 1.0266869 1.0790738 1.1327182 1.1875167 1.2433589 1.3000866 1.357563 1.4155866 1.4740082 1.532599 1.5911684 1.6494827 1.707338 1.764512 1.8207669 1.8758919 1.9296724 1.9818785 2.0323298 2.0808146 2.1271524 2.1711643 2.2127042 2.2515988 2.2877254 2.320948 2.3511584 2.3782563 2.402144 2.4227505 2.4400065 2.4538574 2.4642608 2.471184 2.4746053 2.475 2.4747531 2.472948 2.469452 2.4643345 2.4576669 2.4495196 2.4399633 2.429068 2.4169037 2.4035387 2.3890402 2.3734748 2.3569074 2.339401 2.321018 2.3018181 2.2818599 2.2611995 2.239892 2.21799 2.1955442 2.172604 2.1492162 2.1254256 2.1012757 2.076808 2.0520616 2.0270743 2.0018818 1.9765185 1.9510164 1.9254066 1.8997178 1.8739777 1.8482122 1.822446 1.7967019 1.7710017 1.7453659 1.7198133 1.694362 1.6690286 1.6438287 1.6187768 1.5938863 1.5691696 1.5446383 1.520303 1.4961735 1.4722587 1.4485668 1.4251052 1.4018807 1.3788995 1.3561668 1.3336878 1.3114665 1.2895067 1.2678119 1.2463847 1.2252277 1.2043427 1.1837312 1.1633946 1.1433336 1.1235486 1.10404 1.0848078 1.0658514 1.0471706 1.0287644 1.0106317 0.9927714 0.97518206 0.9578622 0.94080997 0.9240236 0.9075011 0.8912403 0.87523896 0.85949475 0.8440053 0.8287681 0.8137804 0.79903984 0.78454345 0.7702886 0.75627244 0.74249214 0.7289448 0.7156275 0.7025373 0.6896712 0.6770263 0.66459954 0.652388 0.64038855 0.62859833 0.6170143 0.60563344 0.5944528 0.58346933 0.5726801 0.56208223 0.5516727 0.54144865 0.5314071 0.52154535 0.5118604 0.5023494 0.49300966 0.48383835 0.47483274 0.4659901 0.45730776 0.448783 0.4404133 0.43219593 0.42412844 0.4162082 0.40843278 0.40079963 0.39330637 0.3859506 0.37872988 0.37164193 0.3646844 0.35785505 0.3511516 0.34457186 0.33811364 0.3317748 0.3255532 0.31944683 0.31345358 0.30757144 0.3017984 0.29613256 0.290572 0.28511477 0.27975902 0.27450296 0.26934475 0.2642826 0.25931486 0.2544397 0.2496555 0.24496059 0.24035335 0.23583215 0.23139544 0.22704166 0.2227693 0.21857686 0.21446288 0.2104259 0.20646451 0.20257732 0.19876295 0.19502008 0.19134738 0.18774351 0.18420726 0.18073735 0.17733254 0.17399164 0.17071345 0.16749682 0.16434059 0.16124363 0.15820487 0.1552232 0.15229757 0.14942694 0.14661026 0.14384654 0.1411348 0.13847405 0.13586335 0.13330176 0.13078839 0.12832229 0.1259026 0.12352845 0.121199 0.11891339 0.11667082 0.11447047 0.11231155 0.11019329 0.10811492 0.106075704 0.104074895 0.10211178 0.10018564 0.0982958 0.09644157 0.09462227 0.09283725 0.09108588 0.08936752 0.08768154 0.08602734 0.08440432 0.08281189 0.08124948 0.07971653 0.078212485 0.07673679 0.07528892 0.07386836 0.07247457 0.071107075 0.06976536 0.068448946 0.067157365 0.06589013 0.06464681 0.063426934 0.06223006 0.06105577 0.05990362 0.05877321 0.05766412 0.05657595 0.055508308 0.054460805 0.053433064 0.05242471 0.05143538 0.050464716

</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="2.475" PeakHeight="273.474" Num="5" zHalfNm="251.746" Error="1.152">
-51.607 0.182 -0.312 0.235 0.001
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="15" 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="6517.324" A="-1.09180994E11" B="3.3697836E7" C="-2600.0164" Error="0.00178"/>
<QuasiParabolic ID="2" StartDistance="6517.324" EndDistance="6554.649" A="0.0" B="574.5337" C="-0.048116393" Error="0.0116"/>
<QuasiParabolic ID="3" StartDistance="6554.649" EndDistance="6557.0" A="-1.08465193E12" B="3.30784448E8" C="-25219.648" Error="0.0382"/>
<QuasiParabolic ID="4" StartDistance="6557.0" EndDistance="6586.0" A="5.9678302E10" B="-1.8256328E7" C="1396.2427" Error="0.0393"/>
<QuasiParabolic ID="5" StartDistance="6586.0" EndDistance="6587.0" A="-6.4670092E11" B="1.96252992E8" C="-14889.008" Error="0.0"/>
<QuasiParabolic ID="6" StartDistance="6587.0" EndDistance="6588.0" A="7.125941E11" B="-2.1646752E8" C="16439.404" Error="0.0"/>
<QuasiParabolic ID="7" StartDistance="6588.0" EndDistance="6589.0" A="-6.4712468E11" B="1.96319008E8" C="-14889.263" Error="0.0"/>
<QuasiParabolic ID="8" StartDistance="6589.0" EndDistance="6590.0" A="7.1312225E11" B="-2.16565184E8" C="16442.06" Error="0.0"/>
<QuasiParabolic ID="9" StartDistance="6590.0" EndDistance="6591.0" A="-1.66076403E12" B="5.03885888E8" C="-38220.387" Error="0.0"/>
<QuasiParabolic ID="10" StartDistance="6591.0" EndDistance="6594.0" A="8.6296824E12" B="-2.61868928E9" C="198661.36" Error="0.0309"/>
<QuasiParabolic ID="11" StartDistance="6594.0" EndDistance="6604.0" A="3.15474654E12" B="-9.5810816E8" C="72745.29" Error="0.0383"/>
<QuasiParabolic ID="12" StartDistance="6604.0" EndDistance="6610.0" A="9.262076E12" B="-2.80769306E9" C="212780.48" Error="0.00706"/>
<QuasiParabolic ID="13" StartDistance="6610.0" EndDistance="6629.0" A="5.5009838E12" B="-1.66969242E9" C="126698.74" Error="0.0311"/>
<QuasiParabolic ID="14" StartDistance="6629.0" EndDistance="6643.474" A="-1.5244007E13" B="4.5891671E9" C="-345383.0" Error="0.0101"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="111.973" Depth="0.154"/>
<TopsideChapman PeakHeight="273.474" PeakDensity="76000.31" PeakScaleHeight="16.4" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
