<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-04 -124 06:00:00.000"
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" >
2026.05.04 (124) 06:00:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.21" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.99" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="75.82641" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202612405040600001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.525" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.624" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="12.774" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.975" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.975" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.925" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="247.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="247.500" 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="3.350" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="277.907" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.975" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.975" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="253.242" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="235.205" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.687" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="25.893" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.907" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="13.661" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="25.860" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.120" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="23">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
247.500 250.000 250.000 252.500 255.000 255.000 257.500 257.500 260.000 262.500 265.000 266.946 269.147 271.657 274.546 277.907 281.867 286.599 292.356 299.511 308.641 320.698 337.356
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 69 96 96 93 96 84 84 96 96 96 93 93 93 96 96 96 96 108 108 75 78 75
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="373">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 142.08333 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 174.16667 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 206.25 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 253.242 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0
</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 0.3521277 0.3511249 0.34983355 0.34833378 0.34655926 0.3445913 0.34229675 0.3398302 0.33706498 0.33401984 0.33071515 0.327109 0.32322994 0.31904808 0.31454307 0.3097052 0.30453598 0.29904887 0.29310012 0.2867813 0.2800439 0.2727352 0.26502842 0.25670934 0.24776544 0.23820302 0.22786881 0.21668318 0.20459439 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 0.204 0.2088 0.2136 0.2184 0.2232 0.228 0.2328 0.2376 0.2424 0.2472 0.252 0.2568 0.2616 0.2664 0.2712 0.276 0.2808 0.2856 0.2904 0.2952 0.3 0.3048 0.3096 0.3144 0.3192 0.324 0.3288 0.3336 0.3384 0.3432 0.348 0.3528 0.354 0.38246283 0.42213655 0.46381283 0.5075684 0.55347264 0.60164845 0.6521991 0.70524 0.760905 0.81931984 0.8805977 0.94487584 1.0122569 1.0828434 1.1567013 1.2338908 1.3144376 1.3982916 1.4854063 1.5756438 1.6688045 1.7646222 1.8627464 1.9627565 2.0641632 2.1664324 2.2689428 2.3710396 2.4720745 2.5713487 2.668233 2.7620726 2.852293 2.938352 3.0197396 3.0960343 3.1668696 3.2319207 3.290907 3.3436007 3.389825 3.4294271 3.462292 3.4883144 3.5074365 3.5196056 3.5247953 3.525 3.5239525 3.5194535 3.5115669 3.5004666 3.4863274 3.469323 3.4496257 3.4274056 3.4028304 3.376063 3.3472636 3.3165867 3.2841833 3.250198 3.2147706 3.1780353 3.1401212 3.101151 3.061242 3.0205061 2.9790492 2.9369717 2.8943686 2.8513298 2.8079395 2.764277 2.7204173 2.6764293 2.6323788 2.5883265 2.5443285 2.5004377 2.4567025 2.4131677 2.369875 2.3268623 2.2841647 2.2418137 2.1998389 2.158266 2.1171196 2.0764208 2.0361888 1.996441 1.9571923 1.918456 1.8802438 1.8425657 1.8054298 1.7688435 1.7328125 1.6973412 1.6624329 1.6280901 1.5943142 1.5611055 1.5284636 1.4963876 1.4648756 1.433925 1.4035331 1.373696 1.3444097 1.3156699 1.2874715 1.2598094 1.2326778 1.2060711 1.179983 1.1544073 1.1293372 1.1047661 1.0806873 1.0570936 1.0339779 1.0113331 0.98915184 0.9674269 0.94615084 0.92531633 0.904916 0.88494235 0.86538804 0.84624577 0.82750815 0.80916786 0.79121774 0.77365047 0.75645894 0.7396361 0.7231749 0.7070685 0.69130987 0.67589235 0.6608091 0.6460537 0.6316194 0.61749995 0.6036889 0.59018 0.57696706 0.5640441 0.5514051 0.53904414 0.52695554 0.51513356 0.50357264 0.49226725 0.48121202 0.4704017 0.45983103 0.44949496 0.43938845 0.42950657 0.41984454 0.41039762 0.40116113 0.39213058 0.3833015 0.37466946 0.36623022 0.3579796 0.34991345 0.34202772 0.33431852 0.32678193 0.3194142 0.31221157 0.30517045 0.29828724 0.2915585 0.28498077 0.27855074 0.27226517 0.2661208 0.2601145 0.25424325 0.24850401 0.24289387 0.23740995 0.23204944 0.22680958 0.22168769 0.21668112 0.21178733 0.20700377 0.20232798 0.19775756 0.19329014 0.18892343 0.18465517 0.18048315 0.1764052 0.17241924 0.16852318 0.164715 0.16099276 0.1573545 0.15379834 0.15032245 0.146925 0.14360425 0.14035846 0.13718595 0.13408506 0.1310542 0.12809178 0.12519625 0.12236612 0.119599916 0.11689619 0.114253536 0.11167058 0.10914598 0.10667841 0.10426659 0.101909265 0.0996052 0.0973532 0.09515209 0.09300072 0.09089796 0.08884273 0.08683395 0.08487056 0.082951546 0.081075914 0.07924267 0.077450864 0.07569956 0.07398785 0.07231482 0.07067962 0.06908138 0.06751927 0.065992475 0.0645002 0.06304166 0.061616085 0.06022275 0.05886091 0.057529863 0.05622891 0.054957367 0.053714577 0.052499887 0.05131266 0.050152276

</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="3.525" PeakHeight="253.242" Num="5" zHalfNm="235.205" Error="1.148">
-46.87 0.066 -0.606 0.502 -0.084
</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="6512.083" A="-1.47549225E11" B="4.5539884E7" C="-3513.7546" Error="0.00163"/>
<QuasiParabolic ID="2" StartDistance="6512.083" EndDistance="6544.167" A="0.0" B="2715.7922" C="-0.3770127" Error="0.0505"/>
<QuasiParabolic ID="3" StartDistance="6544.167" EndDistance="6574.0" A="9.8736568E9" B="-3125398.2" C="247.07114" Error="0.0505"/>
<QuasiParabolic ID="4" StartDistance="6574.0" EndDistance="6576.0" A="3.54117511E12" B="-1.07744896E9" C="81957.11" Error="0.00928"/>
<QuasiParabolic ID="5" StartDistance="6576.0" EndDistance="6590.0" A="8.8137783E12" B="-2.68103859E9" C="203884.55" Error="0.0505"/>
<QuasiParabolic ID="6" StartDistance="6590.0" EndDistance="6610.0" A="2.13903422E13" B="-6.4979016E9" C="493479.62" Error="0.0422"/>
<QuasiParabolic ID="7" StartDistance="6610.0" EndDistance="6623.242" A="-4.2626061E13" B="1.28716605E10" C="-971691.5" Error="0.0125"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="96.25" Depth="0.154"/>
<TopsideChapman PeakHeight="253.242" PeakDensity="154164.08" PeakScaleHeight="13.661" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
