<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-28 -118 22:25:00.000"
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="20.0">
<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" >
2026.04.28 (118) 22:25:00</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">
FF202611804282225001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.692" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="12.736" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.075" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.075" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="242.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="242.500" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="250.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.075" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.075" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="245.348" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="228.883" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.162" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="23.625" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.794" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="12.456" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="23.670" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.100" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="16">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
242.500 245.000 247.500 250.000 254.375 258.750 263.125 267.500 270.000 275.000 277.500 285.000 292.500 300.000 307.500 317.038
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 69 69 66 0 0 0 60 63 63 60 0 0 0 72 69
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-3.125 -3.125 -3.125 -3.125 -3.125 3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 3.125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="346">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 140.91667 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 171.83333 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 202.75 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 245.348 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0
</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 0.35347393 0.3529119 0.3519786 0.3509026 0.34953943 0.34789655 0.34598285 0.3438088 0.34138623 0.3386593 0.33571413 0.33243394 0.32884502 0.3249759 0.3207348 0.3162249 0.311316 0.3060709 0.30039963 0.29436976 0.2878726 0.28096467 0.27349284 0.26549044 0.25688842 0.24761072 0.23761433 0.22685163 0.21513027 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 0.20083019 0.20581132 0.21079245 0.21577358 0.22075471 0.22573584 0.23071699 0.23569812 0.24067925 0.24566038 0.2506415 0.25562266 0.2606038 0.26558492 0.27056605 0.27554718 0.2805283 0.28550944 0.29049057 0.2954717 0.30045283 0.30543396 0.3104151 0.31539622 0.32037735 0.32535848 0.3303396 0.33532074 0.3403019 0.34528303 0.35026416 0.354 0.3646529 0.40826538 0.45373872 0.5013325 0.55129737 0.6038545 0.65920436 0.71755534 0.7790954 0.84401774 0.9124717 0.9846063 1.0605401 1.1403517 1.2241052 1.3117676 1.4032695 1.4984449 1.5970857 1.6988411 1.803265 1.9098922 2.0180752 2.1271477 2.236349 2.3449066 2.4519827 2.5568008 2.658556 2.7564962 2.8499355 2.938202 3.0207474 3.0970535 3.1666884 3.229268 3.284478 3.3320615 3.3717966 3.403519 3.427097 3.4424431 3.4494963 3.45 3.449087 3.444239 3.4354138 3.4228368 3.4067323 3.387325 3.3648362 3.3394837 3.311481 3.2810357 3.2483494 3.2136168 3.1770253 3.1387553 3.0989788 3.0578597 3.0155547 2.9722116 2.9279706 2.8829641 2.8373165 2.7911444 2.7445574 2.6976578 2.6505408 2.603295 2.556003 2.5087407 2.461578 2.4145799 2.3678057 2.3213096 2.2751412 2.2293458 2.1839638 2.1390324 2.0945845 2.0506496 2.0072541 1.9644213 1.9221716 1.8805225 1.8394893 1.7990851 1.7593204 1.7202042 1.6817434 1.6439432 1.6068075 1.5703385 1.5345372 1.4994035 1.464936 1.4311326 1.3979897 1.3655038 1.3336699 1.3024825 1.2719356 1.2420228 1.2127368 1.1840703 1.1560155 1.128564 1.1017076 1.0754374 1.0497446 1.0246202 1.0000547 0.97603905 0.9525637 0.9296192 0.907196 0.8852845 0.86387527 0.8429587 0.8225253 0.80256563 0.7830703 0.76403 0.7454353 0.7272772 0.70954657 0.6922344 0.6753319 0.65883017 0.6427207 0.6269949 0.61164445 0.596661 0.58203644 0.56776273 0.5538321 0.5402368 0.5269691 0.5140217 0.5013872 0.4890584 0.4770283 0.46529 0.45383668 0.4426617 0.4317586 0.42112097 0.41074258 0.4006173 0.3907392 0.38110235 0.3717011 0.3625298 0.35358298 0.34485525 0.3363414 0.3280363 0.31993493 0.31203237 0.30432388 0.29680473 0.28947037 0.28231633 0.27533823 0.26853183 0.26189294 0.2554175 0.24910153 0.24294117 0.2369326 0.23107214 0.22535616 0.21978115 0.21434364 0.20904028 0.20386781 0.19882299 0.19390272 0.18910392 0.18442364 0.17985895 0.17540702 0.17106508 0.16683044 0.16270043 0.15867251 0.15474416 0.15091291 0.1471764 0.14353228 0.13997827 0.13651218 0.13313179 0.12983502 0.12661983 0.123484164 0.12042608 0.11744367 0.114535056 0.11169842 0.10893198 0.106234014 0.10360282 0.10103676 0.09853421 0.09609361 0.09371343 0.091392174 0.08912838 0.08692064 0.084767565 0.08266779 0.08062001 0.078622945 0.07667532 0.07477593 0.07292357 0.07111709 0.069355346 0.06763723 0.06596166 0.06432759 0.06273399 0.061179865 0.059664227 0.058186132 0.056744643 0.055338863 0.0539679 0.052630894 0.05132701 0.05005542

</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="3.45" PeakHeight="245.348" Num="5" zHalfNm="228.883" Error="1.422">
-42.531 0.028 -0.451 0.396 -0.04
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="9" 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="6510.917" A="-1.58830494E11" B="4.902176E7" C="-3782.4177" Error="0.00166"/>
<QuasiParabolic ID="2" StartDistance="6510.917" EndDistance="6541.833" A="0.0" B="-3270.775" C="0.5423792" Error="0.06"/>
<QuasiParabolic ID="3" StartDistance="6541.833" EndDistance="6568.0" A="1.02720274E11" B="-3.1451072E7" C="2407.473" Error="0.06"/>
<QuasiParabolic ID="4" StartDistance="6568.0" EndDistance="6571.0" A="-8.1334298E11" B="2.4749632E8" C="-18827.865" Error="0.00422"/>
<QuasiParabolic ID="5" StartDistance="6571.0" EndDistance="6575.0" A="9.6832135E12" B="-2.94731622E9" C="224271.55" Error="0.0575"/>
<QuasiParabolic ID="6" StartDistance="6575.0" EndDistance="6580.0" A="6.3260894E12" B="-1.92613773E9" C="146615.39" Error="0.00833"/>
<QuasiParabolic ID="7" StartDistance="6580.0" EndDistance="6604.0" A="2.03733514E13" B="-6.1958221E9" C="471059.5" Error="0.0517"/>
<QuasiParabolic ID="8" StartDistance="6604.0" EndDistance="6615.348" A="-4.9698849E13" B="1.50253158E10" C="-1135628.8" Error="0.00971"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="92.75" Depth="0.154"/>
<TopsideChapman PeakHeight="245.348" PeakDensity="147673.7" PeakScaleHeight="12.456" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
