<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-29 -119 05:50:00.000"
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 F2o cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.29 (119) 05:50:00</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">
FF202611904290550001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.675" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.500" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="12.864" 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="4.025" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="260.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="260.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.425" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="285.615" 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="269.250" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="247.847" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.345" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="30.692" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.166" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="16.308" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="29.850" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.350" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="25">
<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 3.475 3.5 3.525 3.55 3.575 3.6 3.625 3.65 3.675
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
260.000 262.500 262.500 265.000 267.500 270.000 270.000 270.000 272.500 274.146 275.963 277.979 280.230 282.757 285.615 288.875 292.627 296.992 302.133 308.277 315.750 325.035 336.883 352.524 374.126
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 78 81 81 87 87 81 84 81 78 75 75 75 78 99 105 78 75 81 75 72 66 0 66 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="428">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 269.25 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0
</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 0.35362422 0.35313663 0.3524263 0.35157037 0.35049725 0.34921128 0.34779054 0.3460947 0.34420434 0.34212717 0.33980232 0.33724248 0.33452845 0.33153966 0.32836035 0.32488185 0.3211927 0.3171983 0.31299222 0.3084957 0.30364835 0.2985621 0.29312387 0.2873491 0.2811647 0.27462557 0.26766586 0.26023185 0.25232056 0.24386445 0.23482597 0.2251332 0.21472648 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 0.2 0.2 0.2044 0.2088 0.2132 0.2176 0.222 0.2264 0.2308 0.2352 0.2396 0.244 0.2484 0.2528 0.2572 0.2616 0.266 0.2704 0.2748 0.2792 0.2836 0.288 0.2924 0.2968 0.3012 0.3056 0.31 0.3144 0.3188 0.3232 0.3276 0.332 0.3364 0.3408 0.3452 0.3496 0.354 0.38472137 0.41808933 0.4539267 0.49207917 0.53240234 0.5747921 0.6192119 0.6656297 0.7140861 0.7646199 0.8172999 0.87222046 0.92949617 0.9892357 1.0515481 1.116568 1.1844072 1.2551696 1.3289616 1.4058372 1.4858202 1.5689299 1.6550707 1.7441145 1.8358622 1.9299855 2.0261083 2.123742 2.222329 2.3212225 2.4197772 2.5173242 2.613173 2.7067246 2.7974117 2.8847206 2.9682634 3.0476763 3.1227224 3.1931896 3.2589593 3.3199027 3.3760045 3.4272208 3.473566 3.5150356 3.5516584 3.5834725 3.6105049 3.6327815 3.6503322 3.6631856 3.6713555 3.6748543 3.675 3.6742482 3.6709604 3.6651573 3.6569452 3.6464312 3.6337218 3.618924 3.602143 3.5834837 3.5630493 3.540941 3.5172584 3.4920988 3.4655576 3.4377267 3.408697 3.3785546 3.347385 3.3152692 3.2822864 3.2485123 3.2140195 3.1788785 3.1431563 3.106917 3.0702217 3.0331295 2.995696 2.9579744 2.920015 2.881866 2.8435724 2.8051775 2.7667215 2.728243 2.689778 2.6513608 2.6130226 2.5747938 2.5367024 2.4987743 2.461034 2.4235046 2.3862066 2.3491602 2.3123834 2.2758927 2.2397037 2.2038302 2.1682856 2.1330814 2.0982287 2.0637367 2.0296142 1.9958689 1.9625081 1.9295374 1.8969624 1.8647876 1.8330169 1.8016534 1.7706997 1.740158 1.7100296 1.6803157 1.6510167 1.6221327 1.5936633 1.5656079 1.5379654 1.5107343 1.483913 1.4574993 1.4314911 1.4058859 1.3806809 1.3558732 1.3314595 1.3074367 1.2838012 1.2605494 1.2376776 1.2151818 1.1930581 1.1713026 1.1499109 1.1288788 1.1082022 1.0878767 1.0678978 1.048261 1.0289621 1.0099964 0.99135953 0.9730468 0.9550538 0.93737596 0.9200088 0.90294766 0.8861882 0.8697258 0.8535561 0.8376745 0.8220766 0.8067581 0.7917145 0.77694154 0.76243484 0.74819016 0.7342033 0.72047 0.7069861 0.6937476 0.6807503 0.6679902 0.65546346 0.64316595 0.6310939 0.61924344 0.6076108 0.59619224 0.58498406 0.5739826 0.5631843 0.55258566 0.5421831 0.53197324 0.5219526 0.512118 0.50246596 0.49299335 0.483697 0.47457367 0.4656203 0.45683387 0.44821137 0.43974984 0.43144634 0.4232981 0.41530222 0.40745595 0.3997566 0.39220148 0.38478795 0.37751344 0.3703754 0.3633713 0.35649872 0.34975523 0.3431385 0.33664608 0.3302758 0.32402533 0.3178925 0.31187508 0.305971 0.3001781 0.29449436 0.28891775 0.28344625 0.27807793 0.27281085 0.26764312 0.2625729 0.25759843 0.25271782 0.24792938 0.24323136 0.23862208 0.23409988 0.22966313 0.22531024 0.22103961 0.21684973 0.21273907 0.20870613 0.20474946 0.20086765 0.19705927 0.19332294 0.18965733 0.18606107 0.18253288 0.17907147 0.1756756 0.17234401 0.1690755 0.1658689 0.162723 0.15963669 0.15660885 0.15363835 0.15072413 0.14786512 0.14506026 0.14230856 0.13960901 0.1369606 0.13436238 0.13181342 0.12931275 0.12685949 0.12445273 0.1220916 0.11977522 0.11750276 0.11527338 0.11308626 0.11094062 0.10883566 0.10677061 0.104744725 0.10275725 0.10080747 0.09889466 0.09701814 0.095177196 0.093371175 0.091599405 0.08986124 0.08815604 0.08648319 0.08484206 0.083232075 0.08165263 0.08010314 0.07858304 0.07709178 0.07562882 0.074193604 0.072785616 0.071404345 0.07004928 0.068719916 0.06741578 0.06613639 0.064881265 0.06364996 0.06244202 0.061256997 0.060094457 0.058953978 0.057835136 0.056737527 0.055660743 0.054604392 0.053568084 0.052551445 0.05155409 0.05057567

</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="3.675" PeakHeight="269.25" Num="5" zHalfNm="247.847" Error="1.651">
-55.233 2.128 -1.95 1.108 -0.303
</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="6515.0" A="-1.24071371E11" B="3.8293632E7" C="-2954.6301" Error="0.00182"/>
<QuasiParabolic ID="2" StartDistance="6515.0" EndDistance="6550.0" A="0.0" B="1633.1616" C="-0.21063752" Error="0.0325"/>
<QuasiParabolic ID="3" StartDistance="6550.0" EndDistance="6583.0" A="1.98973604E10" B="-6165436.5" C="477.54584" Error="0.0325"/>
<QuasiParabolic ID="4" StartDistance="6583.0" EndDistance="6584.0" A="3.31049101E12" B="-1.00589005E9" C="76409.84" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6584.0" EndDistance="6594.0" A="6.0897577E12" B="-1.85013875E9" C="140523.5" Error="0.0261"/>
<QuasiParabolic ID="6" StartDistance="6594.0" EndDistance="6599.0" A="8.2063975E12" B="-2.49212826E9" C="189203.33" Error="0.00216"/>
<QuasiParabolic ID="7" StartDistance="6599.0" EndDistance="6622.0" A="1.85032098E13" B="-5.6128471E9" C="425657.25" Error="0.0285"/>
<QuasiParabolic ID="8" StartDistance="6622.0" EndDistance="6639.25" A="-3.11478494E13" B="9.3829427E9" C="-706613.2" Error="0.0113"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="105.0" Depth="0.154"/>
<TopsideChapman PeakHeight="269.25" PeakDensity="167563.58" PeakScaleHeight="16.308" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
