<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-16 -106 22:15:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 85% PACIFIC flags: Multiple candidates for F2x cusp, One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.16 (106) 22:15:00</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">
FF202610604162215001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.645" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="16.768" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.300" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.300" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.000" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="4.375" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="275.569" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.378" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.300" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.300" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="241.454" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="218.135" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.312" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="33.258" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.967" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="17.979" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="29.670" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.210" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="53">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 3.825 3.85 3.875 3.9 3.925 3.95 3.975 4.0 4.025 4.05 4.075 4.1 4.125 4.15 4.175 4.2 4.225 4.25 4.275 4.3 4.325 4.35 4.375 4.4 4.425 4.45 4.475 4.5 4.525 4.55 4.575 4.6
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
220.000 220.000 220.000 220.000 222.500 222.500 222.500 223.750 225.000 226.250 227.500 227.500 227.500 227.500 230.000 230.000 232.500 232.500 235.000 235.000 235.000 235.000 237.500 240.000 240.000 240.000 245.000 245.000 245.000 247.500 247.500 250.000 252.500 252.500 255.000 257.500 257.500 260.000 262.500 265.000 267.226 269.698 272.461 275.569 279.090 283.114 287.755 293.169 299.564 307.235 316.605 328.311 343.349
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 81 78 72 69 90 84 0 0 0 66 72 66 66 69 72 72 57 51 57 51 63 66 63 66 75 75 51 60 81 78 81 75 81 84 72 72 72 72 78 78 81 78 66 66 42 39 0 0 0 0 0 0
</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 -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 -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 -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="441">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.03 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 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 241.454 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
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</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.378" PeakHeight="110.0" Num="3" Error="0.0">
-19.584 2.796 -0.182
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.378" EndFrequency="4.6" PeakHeight="241.454" Num="5" zHalfNm="218.135" Error="2.028">
-59.097 8.14 -5.536 2.804 -0.765
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="12" EarthRadius="6370.0">
<QuasiParabolic ID="0" StartDistance="6460.021" EndDistance="6480.001" A="-6.2724571E11" B="1.93594352E8" C="-14937.693" Error="0.00256"/>
<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6505.667" A="-2.77609873E11" B="8.5682056E7" C="-6611.127" Error="0.00188"/>
<QuasiParabolic ID="2" StartDistance="6505.667" EndDistance="6531.333" A="0.0" B="-160.376" C="0.06462718" Error="0.00181"/>
<QuasiParabolic ID="3" StartDistance="6531.333" EndDistance="6556.0" A="9.1035795E10" B="-2.7993642E7" C="2152.024" Error="0.00181"/>
<QuasiParabolic ID="4" StartDistance="6556.0" EndDistance="6559.0" A="1.03263649E13" B="-3.15042458E9" C="240287.39" Error="2.67E-4"/>
<QuasiParabolic ID="5" StartDistance="6559.0" EndDistance="6565.0" A="7.1818989E12" B="-2.19159987E9" C="167195.1" Error="0.00796"/>
<QuasiParabolic ID="6" StartDistance="6565.0" EndDistance="6568.0" A="1.19639984E13" B="-3.64844672E9" C="278150.7" Error="0.00262"/>
<QuasiParabolic ID="7" StartDistance="6568.0" EndDistance="6574.0" A="1.76542303E13" B="-5.3811604E9" C="410056.4" Error="0.00842"/>
<QuasiParabolic ID="8" StartDistance="6574.0" EndDistance="6576.0" A="3.9970534E13" B="-1.21704212E10" C="926428.56" Error="0.00394"/>
<QuasiParabolic ID="9" StartDistance="6576.0" EndDistance="6587.0" A="5.4198452E13" B="-1.64976486E10" C="1255445.2" Error="0.00891"/>
<QuasiParabolic ID="10" StartDistance="6587.0" EndDistance="6610.0" A="-3.7060459E13" B="1.12111452E10" C="-847848.6" Error="0.00504"/>
<QuasiParabolic ID="11" StartDistance="6610.0" EndDistance="6611.454" A="-3.46635926E13" B="1.04859208E10" C="-792990.56" Error="1.33E-6"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="77.0" Depth="0.178"/>
<TopsideChapman PeakHeight="241.454" PeakDensity="262531.03" PeakScaleHeight="17.979" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
