<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-17 -107 07:55:00.000"
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" >
2026.04.17 (107) 07:55:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.19" 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">
FF202610704170755001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.656" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="8.957" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="2.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="235.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="235.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.325" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="272.606" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="242.295" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="221.355" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.714" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="29.907" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.519" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="16.263" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="27.070" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.120" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="19">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.0 2.025 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
235.000 237.500 240.000 240.000 242.500 245.000 247.500 250.000 252.500 255.000 258.472 262.469 267.122 272.606 279.166 287.152 297.086 309.780 326.571
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 0 78 78 78 81 78 78 0 66 66 0 0 0 0 0 0 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 -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="382">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 139.16667 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 168.33333 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 197.5 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 242.295 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0
</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 0.352762 0.35175505 0.3505324 0.3489521 0.3470975 0.34497866 0.3425364 0.33978727 0.33674988 0.3333779 0.32963315 0.32561377 0.321167 0.3164043 0.31120363 0.30563802 0.29957724 0.29311055 0.28615454 0.27862445 0.27052397 0.26174292 0.2523066 0.24211602 0.23105234 0.21895285 0.20588575 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 0.20352 0.2088 0.21408 0.21936 0.22464 0.22992 0.2352 0.24048 0.24576 0.25104 0.25632 0.2616 0.26688 0.27216 0.27744 0.28272 0.288 0.29328 0.29856 0.30384 0.30912 0.3144 0.31968 0.32496 0.33024 0.33552 0.3408 0.34608 0.35136 0.354 0.36714476 0.3967734 0.43084452 0.46887928 0.5100972 0.55369884 0.59914166 0.646122 0.694566 0.7445617 0.79626924 0.84990394 0.90575445 0.96408546 1.0251899 1.0893689 1.1568234 1.2277216 1.3020437 1.3795364 1.4595892 1.5412872 1.6233315 1.7042626 1.7826074 1.8571615 1.927051 1.9917892 2.051205 2.1053689 2.1544635 2.198774 2.2385955 2.2742274 2.3059404 2.333998 2.3586156 2.3799949 2.3983037 2.4136794 2.426242 2.436081 2.4432697 2.4478614 2.4498892 2.45 2.4495544 2.4474282 2.4436128 2.43818 2.4312012 2.4227488 2.4128942 2.4017084 2.3892617 2.3756235 2.360862 2.3450444 2.3282356 2.3105 2.2918997 2.272495 2.2523448 2.2315059 2.2100327 2.187979 2.165395 2.14233 2.1188312 2.0949433 2.0707097 2.0461717 2.0213683 1.9963373 1.9711142 1.9457328 1.9202254 1.8946224 1.8689525 1.8432431 1.8175198 1.7918066 1.7661265 1.7405008 1.7149495 1.6894913 1.6641438 1.6389233 1.613845 1.5889231 1.5641706 1.5395998 1.5152216 1.4910465 1.4670839 1.4433424 1.4198298 1.3965533 1.3735193 1.3507336 1.3282013 1.3059272 1.2839149 1.2621684 1.2406904 1.2194835 1.1985499 1.1778911 1.1575087 1.1374036 1.1175762 1.0980271 1.0787561 1.0597631 1.0410475 1.0226085 1.0044451 0.9865563 0.96894056 0.9515964 0.934522 0.9177156 0.9011752 0.8848986 0.8688836 0.85312784 0.8376289 0.8223842 0.8073911 0.79264694 0.77814907 0.76389456 0.7498807 0.73610437 0.7225629 0.70925313 0.69617224 0.6833171 0.67068475 0.65827215 0.64607626 0.634094 0.6223224 0.6107583 0.5993988 0.58824074 0.5772811 0.566517 0.55594534 0.5455632 0.5353676 0.5253556 0.5155242 0.5058707 0.49639207 0.48708555 0.4779483 0.46897754 0.46017048 0.45152447 0.44303674 0.43470466 0.42652556 0.4184969 0.41061607 0.40288055 0.3952878 0.38783538 0.38052085 0.37334183 0.36629587 0.35938072 0.35259405 0.34593356 0.339397 0.33298227 0.3266871 0.32050937 0.31444702 0.3084979 0.30266008 0.29693145 0.2913101 0.28579408 0.28038144 0.27507034 0.2698589 0.26474532 0.25972784 0.25480464 0.24997404 0.24523431 0.2405838 0.23602086 0.23154387 0.22715126 0.22284146 0.21861292 0.21446417 0.21039371 0.20640008 0.20248188 0.19863768 0.19486612 0.19116585 0.18753552 0.18397385 0.18047954 0.17705134 0.173688 0.17038833 0.16715112 0.16397521 0.16085945 0.1578027 0.15480387 0.15186186 0.1489756 0.14614406 0.14336619 0.14064099 0.13796748 0.13534467 0.13277161 0.13024735 0.127771 0.12534164 0.12295838 0.12062035 0.118326694 0.11607658 0.1138692 0.111703716 0.109579355 0.10749534 0.1054509 0.10344529 0.10147778 0.09954765 0.09765418 0.09579668 0.093974486 0.092186905 0.0904333 0.08871301 0.08702542 0.08536991 0.08374585 0.08215267 0.08058977 0.07905658 0.07755254 0.076077096 0.0746297 0.07320982 0.07181694 0.070450544 0.069110125 0.0677952 0.066505276 0.065239884 0.06399856 0.062780835 0.061586276 0.060414433 0.05926488 0.05813719 0.057030946 0.055945747 0.05488119 0.05383688 0.052812435 0.051807478 0.050821636

</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="2.45" PeakHeight="242.295" Num="5" zHalfNm="221.355" Error="1.889">
-48.362 6.232 -3.926 1.87 -0.609
</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="6509.167" A="-1.78385355E11" B="5.5057208E7" C="-4248.116" Error="0.00152"/>
<QuasiParabolic ID="2" StartDistance="6509.167" EndDistance="6538.333" A="0.0" B="-1964.2787" C="0.34178856" Error="0.0341"/>
<QuasiParabolic ID="3" StartDistance="6538.333" EndDistance="6566.0" A="7.8749532E10" B="-2.415948E7" C="1852.9904" Error="0.0341"/>
<QuasiParabolic ID="4" StartDistance="6566.0" EndDistance="6567.0" A="3.3198527E12" B="-1.0113977E9" C="77031.05" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6567.0" EndDistance="6576.0" A="6.5875613E12" B="-2.00658842E9" C="152803.14" Error="0.0338"/>
<QuasiParabolic ID="6" StartDistance="6576.0" EndDistance="6582.0" A="7.7894947E12" B="-2.37214003E9" C="180597.52" Error="0.012"/>
<QuasiParabolic ID="7" StartDistance="6582.0" EndDistance="6591.0" A="1.78913469E13" B="-5.4416788E9" C="413774.28" Error="0.00411"/>
<QuasiParabolic ID="8" StartDistance="6591.0" EndDistance="6612.295" A="-1.29499021E13" B="3.91691597E9" C="-296178.28" Error="0.00732"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="87.5" Depth="0.154"/>
<TopsideChapman PeakHeight="242.295" PeakDensity="74472.7" PeakScaleHeight="16.263" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
