<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-18 -138 00:50:00.000"
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 F2x cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.18 (138) 00:50:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.22" 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">
FF202613805180050001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.275" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.606" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.811" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.625" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="257.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="257.500" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.050" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="270.688" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="261.523" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="241.267" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.653" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="28.988" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.885" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="15.593" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="27.190" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.790" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="14">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 3.275
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
257.500 260.000 263.139 266.675 270.688 275.284 280.597 286.810 294.175 303.041 313.923 327.594 345.285 369.074
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 78 78 78 78 90 0 0 90 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 -10.9375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="407">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 144.41667 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 178.83333 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 213.25 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 261.523 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0
</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 0.35306162 0.35242635 0.351496 0.35034946 0.34906474 0.34757262 0.34580722 0.34384936 0.34170708 0.3393199 0.33670086 0.33386406 0.33075932 0.32740733 0.32383022 0.31999075 0.3158602 0.31147584 0.30682194 0.3017886 0.29647052 0.29077086 0.28478742 0.2783704 0.27152064 0.2642219 0.2564137 0.24812241 0.23924045 0.22962193 0.21941046 0.20837834 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 0.20074576 0.20522034 0.20969492 0.21416949 0.21864407 0.22311865 0.22759321 0.2320678 0.23654237 0.24101695 0.24549152 0.2499661 0.25444067 0.25891525 0.26338983 0.2678644 0.272339 0.27681357 0.28128815 0.2857627 0.29023728 0.29471186 0.29918644 0.30366102 0.3081356 0.31261018 0.31708476 0.3215593 0.3260339 0.33050847 0.33498305 0.33945763 0.3439322 0.3484068 0.35288134 0.354 0.3758676 0.40921143 0.44729346 0.4896534 0.53554386 0.5842313 0.6351636 0.68803203 0.74269366 0.79917556 0.85757107 0.91804737 0.9808229 1.0461098 1.1141641 1.1852348 1.2595959 1.3374616 1.4190447 1.504471 1.5937592 1.6868051 1.7832925 1.8826472 1.9840525 2.086464 2.18864 2.2892928 2.3871777 2.4812217 2.5705361 2.6545632 2.732913 2.8054218 2.8720796 2.932958 2.9881973 3.0379903 3.082531 3.1220198 3.1566374 3.186553 3.2119255 3.2328875 3.2495408 3.2619767 3.2702625 3.274442 3.275 3.2747025 3.2721875 3.2671993 3.2598464 3.250238 3.2384825 3.224689 3.2089648 3.191417 3.1721501 3.1512675 3.1288702 3.105057 3.0799239 3.0535645 3.0260696 2.9975271 2.9680216 2.937635 2.906446 2.8745298 2.841959 2.808803 2.7751284 2.7409978 2.7064717 2.6716073 2.6364589 2.6010783 2.565514 2.5298126 2.4940171 2.4581687 2.4223063 2.3864658 2.3506815 2.314985 2.279406 2.2439725 2.2087102 2.173643 2.1387937 2.104182 2.0698278 2.0357478 2.0019586 1.9684747 1.9353094 1.902475 1.8699825 1.8378415 1.8060613 1.7746494 1.7436129 1.7129577 1.6826893 1.652812 1.6233296 1.5942453 1.5655613 1.5372795 1.5094012 1.4819273 1.4548578 1.4281926 1.4019313 1.3760728 1.3506155 1.3255581 1.3008983 1.276634 1.2527624 1.2292811 1.2061868 1.1834763 1.1611464 1.1391933 1.1176134 1.0964028 1.0755576 1.0550736 1.0349467 1.0151726 0.995747 0.9766655 0.9579236 0.9395168 0.92144054 0.90369034 0.8862615 0.8691495 0.85234964 0.83585733 0.819668 0.803777 0.78817964 0.7728715 0.75784796 0.7431044 0.7286364 0.71443945 0.7005091 0.68684083 0.67343044 0.66027343 0.6473656 0.63470274 0.62228054 0.61009485 0.59814155 0.5864166 0.57491595 0.5636357 0.5525719 0.5417206 0.5310781 0.5206406 0.51040435 0.50036573 0.4905212 0.4808671 0.47139996 0.4621164 0.45301294 0.44408628 0.43533316 0.42675033 0.41833457 0.41008282 0.40199196 0.39405894 0.38628083 0.3786547 0.3711776 0.3638468 0.3566595 0.3496129 0.3427044 0.33593127 0.32929102 0.32278106 0.31639886 0.310142 0.30400807 0.2979947 0.29209954 0.28632033 0.28065485 0.27510086 0.2696562 0.2643188 0.25908652 0.25395736 0.24892929 0.24400036 0.23916861 0.23443219 0.22978923 0.22523788 0.22077636 0.21640293 0.21211587 0.20791347 0.20379409 0.1997561 0.19579789 0.19191793 0.18811464 0.18438657 0.18073219 0.17715009 0.17363882 0.17019702 0.16682331 0.16351634 0.16027482 0.15709743 0.15398294 0.15093009 0.14793767 0.1450045 0.1421294 0.13931122 0.13654886 0.1338412 0.13118717 0.12858571 0.12603576 0.12353635 0.12108644 0.11868507 0.11633128 0.114024125 0.11176269 0.109546065 0.10737337 0.10524373 0.1031563 0.10111024 0.09910475 0.09713899 0.09521221 0.093323626 0.09147248 0.08965802 0.087879546 0.086136326 0.08442767 0.08275289 0.08111132 0.0795023 0.077925175 0.07637934 0.07486414 0.073379 0.07192331 0.070496485 0.06909795 0.06772716 0.066383556 0.06506659 0.063775755 0.06251051 0.06127037 0.06005482 0.058863383 0.05769558 0.056550935 0.055428997 0.05432931 0.053251438 0.052194946 0.05115941 0.050144415

</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="3.275" PeakHeight="261.523" Num="5" zHalfNm="241.267" Error="2.187">
-50.501 4.095 -2.919 1.649 -0.597
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="10" 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="6514.417" A="-1.28301556E11" B="3.9599244E7" C="-3055.372" Error="0.00167"/>
<QuasiParabolic ID="2" StartDistance="6514.417" EndDistance="6548.833" A="0.0" B="-749.5558" C="0.15509126" Error="0.0159"/>
<QuasiParabolic ID="3" StartDistance="6548.833" EndDistance="6579.0" A="4.8931246E10" B="-1.5011525E7" C="1151.3563" Error="0.0159"/>
<QuasiParabolic ID="4" StartDistance="6579.0" EndDistance="6582.0" A="-3.17008445E11" B="9.6233248E7" C="-7303.1787" Error="0.00344"/>
<QuasiParabolic ID="5" StartDistance="6582.0" EndDistance="6587.0" A="8.0998842E12" B="-2.46131533E9" C="186980.38" Error="0.017"/>
<QuasiParabolic ID="6" StartDistance="6587.0" EndDistance="6593.0" A="6.8165241E12" B="-2.07165094E9" C="157402.08" Error="0.00804"/>
<QuasiParabolic ID="7" StartDistance="6593.0" EndDistance="6598.0" A="1.17821911E13" B="-3.57799603E9" C="271640.28" Error="0.00169"/>
<QuasiParabolic ID="8" StartDistance="6598.0" EndDistance="6613.0" A="2.22173562E13" B="-6.7411261E9" C="511344.0" Error="0.0147"/>
<QuasiParabolic ID="9" StartDistance="6613.0" EndDistance="6631.523" A="-2.584031E13" B="7.793175E9" C="-587574.9" Error="0.00662"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="103.25" Depth="0.154"/>
<TopsideChapman PeakHeight="261.523" PeakDensity="133072.27" PeakScaleHeight="15.593" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
