<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-29 -119 07:20:00.000"
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" >
2026.04.29 (119) 07:20:00</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">
FF202611904290720001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.608" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="13.709" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="250.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="250.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="285.970" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="256.297" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="236.655" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.860" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="28.127" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.141" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="15.001" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="26.670" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.550" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="35">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.95 2.975 3.0 3.025 3.05 3.075 3.1 3.125 3.15 3.175 3.2 3.225 3.25 3.275 3.3 3.325 3.35 3.375 3.4 3.425 3.45 3.475 3.5 3.525 3.55 3.575 3.6 3.625 3.65 3.675 3.7 3.725 3.75 3.775 3.8
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
250.000 250.000 250.000 250.000 250.000 252.500 252.500 252.500 255.000 256.250 257.500 257.500 260.000 260.000 260.000 262.500 265.000 265.000 265.000 265.000 266.875 268.750 270.625 272.285 274.196 276.418 279.036 282.165 285.970 290.699 296.733 304.699 315.701 331.886 358.042
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 84 84 84 87 102 99 81 78 0 99 102 96 78 84 111 108 87 81 102 105 75 87 87 81 78 84 81 81 75 81 72 75 57 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 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="399">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 142.66667 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 175.33333 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 256.297 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0
</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 0.35298675 0.35220242 0.35119912 0.34998095 0.3485529 0.34684834 0.3448765 0.3427189 0.34031472 0.33767694 0.33475268 0.3315615 0.3281247 0.32440233 0.3203629 0.31604326 0.3114253 0.3064471 0.3011715 0.2954905 0.2894757 0.282966 0.27603868 0.26865014 0.2607728 0.25231564 0.24324727 0.23349129 0.22299255 0.211631 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 0.20314285 0.20785715 0.21257143 0.21728571 0.222 0.22671428 0.23142858 0.23614286 0.24085714 0.24557143 0.2502857 0.255 0.25971428 0.2644286 0.26914287 0.27385715 0.27857143 0.2832857 0.288 0.2927143 0.29742858 0.30214286 0.30685714 0.31157142 0.3162857 0.321 0.3257143 0.33042857 0.33514285 0.33985713 0.34457144 0.34928572 0.354 0.39051804 0.43053144 0.47371277 0.51977307 0.56849897 0.6198171 0.673717 0.7302574 0.78958094 0.85183483 0.9172211 0.9859629 1.0583041 1.134496 1.2147833 1.2993977 1.3885496 1.4823605 1.5809209 1.6841615 1.7918808 1.9036609 2.0188835 2.1366987 2.256137 2.3759737 2.4950047 2.6120114 2.7258325 2.835534 2.9403162 3.039578 3.1329136 3.2200553 3.3008668 3.375292 3.4433763 3.5051608 3.560758 3.610274 3.6538262 3.691525 3.723477 3.7497678 3.7704873 3.7856977 3.795444 3.799761 3.8 3.799193 3.7953312 3.788409 3.7785676 3.7659488 3.7506948 3.7329464 3.7128437 3.6905246 3.666124 3.6397755 3.6116087 3.58175 3.550322 3.5174444 3.4832323 3.4477966 3.4112446 3.3736792 3.3351989 3.2958984 3.255868 3.2151935 3.173957 3.1322367 3.090106 3.0476353 3.0048907 2.9619348 2.9188266 2.8756216 2.832372 2.7891264 2.7459307 2.702828 2.6598577 2.6170576 2.5744617 2.532102 2.4900084 2.448208 2.4067261 2.3655858 2.3248081 2.2844121 2.2444158 2.2048342 2.1656823 2.1269727 2.0887165 2.050924 2.0136037 1.9767637 1.9404101 1.9045488 1.8691839 1.8343195 1.7999581 1.766102 1.7327522 1.6999096 1.667574 1.635745 1.6044214 1.5736014 1.543283 1.5134637 1.4841406 1.4553105 1.4269694 1.3991139 1.3717395 1.3448418 1.3184162 1.2924578 1.2669616 1.2419223 1.2173346 1.1931931 1.169492 1.1462258 1.1233888 1.1009748 1.0789783 1.0573932 1.0362134 1.0154332 0.99504626 0.9750468 0.9554287 0.936186 0.9173126 0.89880264 0.8806501 0.8628491 0.8453937 0.8282781 0.8114965 0.79504305 0.77891225 0.76309824 0.74759555 0.7323986 0.717502 0.70290023 0.688588 0.67456007 0.6608111 0.6473361 0.63413 0.6211876 0.60850424 0.5960748 0.5838947 0.5719591 0.5602634 0.54880303 0.53757346 0.52657026 0.51578915 0.5052257 0.49487585 0.48473537 0.47480017 0.46506628 0.45552978 0.44618675 0.4370334 0.42806602 0.41928095 0.41067454 0.40224332 0.39398375 0.38589245 0.3779661 0.37020138 0.36259505 0.35514396 0.34784505 0.3406952 0.33369148 0.3268309 0.32011062 0.31352782 0.30707973 0.3007636 0.2945768 0.28851673 0.2825808 0.27676648 0.27107134 0.26549298 0.260029 0.2546771 0.24943496 0.24430041 0.23927124 0.2343453 0.22952048 0.22479476 0.22016607 0.21563247 0.211192 0.20684277 0.20258291 0.19841062 0.19432406 0.19032153 0.1864013 0.18256165 0.17880099 0.17511766 0.17151009 0.16797672 0.16451605 0.16112658 0.15780686 0.15455544 0.15137093 0.14825197 0.1451972 0.1422053 0.139275 0.13640502 0.13359413 0.13084109 0.12814476 0.12550394 0.122917496 0.12038432 0.11790331 0.1154734 0.113093525 0.11076268 0.108479835 0.10624401 0.10405425 0.10190959 0.09980912 0.097751915 0.09573709 0.093763776 0.09183112 0.08993828 0.088084444 0.086268805 0.084490575 0.08274899 0.08104328 0.07937273 0.077736594 0.07613418 0.07456479 0.07302774 0.07152236 0.07004801 0.068604045 0.067189835 0.06580477 0.06444826 0.0631197 0.061818525 0.060544167 0.05929607 0.058073703 0.05687653 0.05570403 0.0545557 0.053431034 0.052329555 0.05125078 0.050194237

</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="3.8" PeakHeight="256.297" Num="5" zHalfNm="236.655" Error="1.285">
-50.206 3.421 -2.48 1.291 -0.323
</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="6512.667" A="-1.42344143E11" B="4.3933376E7" C="-3389.796" Error="0.00162"/>
<QuasiParabolic ID="2" StartDistance="6512.667" EndDistance="6545.333" A="0.0" B="113.357315" C="0.022621866" Error="0.00148"/>
<QuasiParabolic ID="3" StartDistance="6545.333" EndDistance="6574.0" A="4.0912876E10" B="-1.2582855E7" C="967.4714" Error="0.00148"/>
<QuasiParabolic ID="4" StartDistance="6574.0" EndDistance="6576.0" A="-4.64872473E11" B="1.412916E8" C="-10735.788" Error="0.002"/>
<QuasiParabolic ID="5" StartDistance="6576.0" EndDistance="6580.0" A="7.0570853E12" B="-2.14640845E9" C="163207.34" Error="0.0364"/>
<QuasiParabolic ID="6" StartDistance="6580.0" EndDistance="6586.0" A="7.95237E12" B="-2.41853158E9" C="183885.39" Error="0.00773"/>
<QuasiParabolic ID="7" StartDistance="6586.0" EndDistance="6592.0" A="1.3515936E13" B="-4.10804429E9" C="312150.84" Error="0.00718"/>
<QuasiParabolic ID="8" StartDistance="6592.0" EndDistance="6609.0" A="2.88551925E13" B="-8.7619451E9" C="665147.0" Error="0.0284"/>
<QuasiParabolic ID="9" StartDistance="6609.0" EndDistance="6626.297" A="-3.779359E13" B="1.14071521E10" C="-860734.2" Error="0.0117"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="98.0" Depth="0.154"/>
<TopsideChapman PeakHeight="256.297" PeakDensity="179156.33" PeakScaleHeight="15.001" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
