<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-15 -105 03:45:00.000"
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" >
2026.04.15 (105) 03:45:00</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">
FF202610504150345001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.725" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="12.106" 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="3.525" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="225.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="225.000" 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="3.175" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="278.413" 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="237.750" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="218.167" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.487" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="27.967" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.826" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="14.723" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="27.130" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.310" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="51">
<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 2.475 2.5 2.525 2.55 2.575 2.6 2.625 2.65 2.675 2.7 2.725 2.75 2.775 2.8 2.825 2.85 2.875 2.9 2.925 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
225.000 225.000 225.000 227.500 230.000 227.500 227.500 230.000 232.500 232.500 233.750 235.000 235.000 235.000 233.750 232.500 232.500 232.500 232.500 235.000 235.000 237.500 237.500 237.500 237.500 240.000 240.000 240.000 241.250 242.500 247.500 247.500 248.750 250.000 252.500 253.571 254.643 255.714 256.786 257.857 258.929 260.000 262.311 264.862 267.693 270.852 274.400 278.413 282.989 288.256 294.384
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 84 87 0 84 90 93 84 90 75 0 60 63 60 0 72 72 78 75 72 81 81 75 78 81 78 81 81 72 78 78 78 0 48 48 0 0 0 0 0 0 84 84 96 0 0 84 84 0 93 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 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 -7.8125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="369">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 136.83333 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 163.66667 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 190.5 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 237.75 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0
</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 0.353812 0.35332385 0.35253775 0.3513833 0.34986797 0.34800196 0.34587008 0.3433416 0.34043694 0.33717975 0.3335292 0.3294542 0.3250611 0.3201454 0.31483623 0.30908883 0.30277678 0.29597685 0.28861925 0.2806141 0.2719544 0.2625736 0.25233817 0.24117032 0.22898808 0.2156547 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 0.20191304 0.20765217 0.2133913 0.21913044 0.22486956 0.2306087 0.23634782 0.24208696 0.24782608 0.25356522 0.25930434 0.26504347 0.27078262 0.27652174 0.28226086 0.288 0.29373914 0.29947826 0.3052174 0.3109565 0.31669566 0.32243478 0.3281739 0.33391306 0.33965218 0.3453913 0.35113043 0.354 0.37480772 0.4144844 0.45360816 0.49341887 0.5346765 0.57792175 0.6235973 0.672119 0.72385484 0.7791297 0.8382472 0.9014151 0.96878785 1.0404238 1.1162499 1.1960669 1.2795267 1.366195 1.4555331 1.5469322 1.6398089 1.7335172 1.8274643 1.9211265 2.0139952 2.1056356 2.1956327 2.283636 2.3693078 2.4523563 2.532515 2.609523 2.6831324 2.7531347 2.8192914 2.8814108 2.9392953 2.9927356 3.0415537 3.0855927 3.1246827 3.1586814 3.1874638 3.2109072 3.2289312 3.2414536 3.2484288 3.25 3.249909 3.247753 3.242826 3.2352557 3.2251701 3.2126977 3.1979668 3.1811037 3.1622343 3.1414816 3.1189666 3.0948076 3.0691195 3.0420146 3.013601 2.9839842 2.953265 2.9215407 2.8889055 2.8554487 2.8212562 2.78641 2.7509882 2.715065 2.6787112 2.6419935 2.6049752 2.5677164 2.530273 2.4926984 2.4550428 2.4173527 2.379672 2.3420417 2.3045003 2.2670832 2.2298236 2.1927521 2.1558974 2.1192853 2.0829406 2.0468848 2.0111387 1.9757204 1.9406471 1.9059339 1.8715945 1.8376414 1.8040855 1.7709364 1.7382028 1.7058922 1.6740109 1.6425643 1.611557 1.5809926 1.5508739 1.5212032 1.4919816 1.4632103 1.4348892 1.4070181 1.379596 1.3526214 1.326093 1.300008 1.2743644 1.2491589 1.2243884 1.2000494 1.1761382 1.1526507 1.129583 1.1069304 1.0846884 1.0628524 1.0414175 1.0203787 0.9997311 0.9794695 0.9595885 0.940083 0.9209477 0.90217704 0.88376576 0.86570835 0.84799945 0.8306335 0.8136052 0.796909 0.7805395 0.7644913 0.7487591 0.7333374 0.71822107 0.70340466 0.688883 0.67465097 0.66070336 0.6470351 0.6336412 0.62051654 0.6076563 0.59505564 0.5827097 0.57061374 0.55876315 0.5471532 0.5357794 0.5246373 0.51372236 0.5030303 0.49255687 0.48229778 0.4722489 0.46240613 0.45276543 0.4433229 0.43407455 0.42501664 0.41614532 0.407457 0.39894795 0.39061463 0.38245356 0.37446126 0.36663437 0.35896954 0.3514635 0.3441131 0.33691517 0.32986662 0.3229644 0.3162056 0.30958724 0.3031065 0.29676056 0.2905467 0.28446218 0.27850437 0.27267066 0.26695853 0.2613655 0.2558891 0.25052688 0.24527659 0.24013586 0.23510244 0.23017414 0.22534877 0.2206242 0.21599835 0.21146919 0.2070347 0.20269294 0.19844197 0.19427991 0.19020492 0.18621519 0.18230896 0.17848447 0.17474003 0.171074 0.16748472 0.1639706 0.16053008 0.15716162 0.15386373 0.15063491 0.14747377 0.14437886 0.1413488 0.13838224 0.13547787 0.13263437 0.12985049 0.12712498 0.1244566 0.12184418 0.11928654 0.11678252 0.11433104 0.11193096 0.10958122 0.10728077 0.10502857 0.10282362 0.10066493 0.09855153 0.09648246 0.094456814 0.09247366 0.090532124 0.08863133 0.08677042 0.08494857 0.083164945 0.08141875 0.07970921 0.07803555 0.07639701 0.07479286 0.07322239 0.071684875 0.07017964 0.068706 0.06726329 0.06585087 0.06446809 0.06311435 0.061789025 0.060491525 0.05922126 0.057977665 0.056760177 0.05556825 0.05440135 0.053258948 0.05214053 0.051045593

</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="3.25" PeakHeight="237.75" Num="5" zHalfNm="218.167" Error="0.939">
-48.304 1.653 -0.95 0.117 0.234
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="8" 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="6506.833" A="-2.10612257E11" B="6.5003784E7" C="-5015.5986" Error="0.00148"/>
<QuasiParabolic ID="2" StartDistance="6506.833" EndDistance="6533.667" A="0.0" B="-2452.083" C="0.41686657" Error="0.0392"/>
<QuasiParabolic ID="3" StartDistance="6533.667" EndDistance="6556.0" A="1.11489655E11" B="-3.4196568E7" C="2622.259" Error="0.0392"/>
<QuasiParabolic ID="4" StartDistance="6556.0" EndDistance="6558.0" A="-1.50949056E12" B="4.6030624E8" C="-35091.5" Error="0.00226"/>
<QuasiParabolic ID="5" StartDistance="6558.0" EndDistance="6569.0" A="6.100137E12" B="-1.86040973E9" C="141846.28" Error="0.0411"/>
<QuasiParabolic ID="6" StartDistance="6569.0" EndDistance="6593.0" A="1.56745188E13" B="-4.7754291E9" C="363723.25" Error="0.0563"/>
<QuasiParabolic ID="7" StartDistance="6593.0" EndDistance="6607.75" A="-3.03211919E13" B="9.1774638E9" C="-694436.4" Error="0.0156"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="80.5" Depth="0.154"/>
<TopsideChapman PeakHeight="237.75" PeakDensity="131048.39" PeakScaleHeight="14.723" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
