<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-17 -107 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" >
2026.04.17 (107) 06:00:00</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">
FF202610704170600001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.525" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.507" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="12.362" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.275" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.275" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.875" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="282.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="282.500" 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="0.075" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.275" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="282.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.275" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.275" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="271.851" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="251.453" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.320" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="29.295" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.022" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="15.360" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="29.350" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.070" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="11">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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" >
282.500 287.500 292.500 295.000 300.402 306.345 312.915 320.218 328.382 337.569 347.985
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 0 99 102 90 0 0 0 0 87 87
</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 7.8125 -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="417">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 146.33533 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 182.67067 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 219.006 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 271.851 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0
</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 0.35321164 0.35257575 0.35171902 0.350793 0.3495781 0.34822693 0.34667084 0.34491625 0.34297034 0.34084114 0.33853734 0.33600065 0.33324477 0.3302845 0.32707193 0.32369038 0.32003644 0.31613877 0.3119707 0.3075695 0.3028686 0.29792106 0.2926138 0.28705156 0.28114328 0.27484357 0.2681559 0.26100084 0.25346512 0.24539834 0.23684183 0.22759539 0.21775915 0.20724934 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 0.2 0.2 0.20139581 0.20563412 0.20987241 0.2141107 0.21834901 0.2225873 0.22682561 0.2310639 0.23530221 0.2395405 0.2437788 0.2480171 0.2522554 0.2564937 0.260732 0.2649703 0.26920858 0.2734469 0.2776852 0.2819235 0.28616178 0.2904001 0.2946384 0.29887667 0.30311498 0.3073533 0.3115916 0.31582987 0.32006818 0.3243065 0.32854477 0.33278307 0.33702138 0.3412597 0.34549797 0.34973627 0.35397458 0.354 0.38396883 0.41664398 0.45189613 0.48976132 0.5302687 0.5734172 0.61919785 0.667605 0.71862835 0.77225196 0.8284318 0.88714767 0.94835854 1.0120314 1.0780996 1.1465192 1.2171993 1.2900577 1.3649979 1.4419242 1.5206879 1.6011529 1.683143 1.7664869 1.8509833 1.9364134 2.022538 2.1091056 2.195849 2.28247 2.36866 2.4541292 2.5385425 2.6215703 2.7028756 2.7821074 2.8589292 2.9330206 3.0040371 3.0716693 3.135599 3.1955159 3.2511506 3.3022382 3.3485405 3.3898227 3.4258943 3.4565804 3.4817283 3.5012195 3.514956 3.5228753 3.525 3.5249677 3.523104 3.51846 3.5111575 3.501319 3.489067 3.4745243 3.457812 3.439051 3.4183595 3.3958545 3.3716497 3.3458574 3.3185856 3.2899408 3.260025 3.2289376 3.1967745 3.1636276 3.1295862 3.0947354 3.0591567 3.0229282 2.986125 2.9488175 2.911074 2.8729582 2.8345318 2.7958522 2.7569742 2.7179496 2.6788268 2.6396518 2.6004674 2.5613146 2.5222306 2.483251 2.444409 2.405735 2.3672578 2.329004 2.290998 2.2532625 2.2158186 2.178685 2.1418796 2.1054182 2.0693154 2.0335846 1.9982376 1.9632847 1.9287359 1.8945992 1.8608822 1.8275911 1.7947314 1.7623079 1.7303243 1.6987836 1.6676883 1.63704 1.6068399 1.5770885 1.5477858 1.518931 1.4905237 1.462562 1.4350444 1.4079686 1.3813324 1.3551326 1.3293664 1.3040305 1.2791212 1.2546347 1.2305671 1.2069143 1.1836718 1.1608354 1.1384002 1.1163619 1.0947154 1.0734558 1.0525783 1.032078 1.0119495 0.99218804 0.97278816 0.9537449 0.93505293 0.91670716 0.8987023 0.88103324 0.8636947 0.8466816 0.8299887 0.81361085 0.797543 0.78178006 0.76631695 0.7511487 0.7362703 0.7216769 0.70736355 0.6933254 0.6795578 0.6660559 0.6528151 0.6398307 0.62709826 0.6146132 0.602371 0.5903673 0.5785979 0.56705844 0.55574465 0.5446524 0.5337777 0.5231164 0.5126646 0.50241834 0.4923738 0.4825272 0.47287476 0.46341288 0.45413792 0.44504634 0.4361346 0.42739934 0.41883713 0.41044468 0.40221873 0.39415607 0.38625357 0.3785081 0.37091663 0.3634762 0.35618386 0.34903672 0.342032 0.33516687 0.3284386 0.3218446 0.31538215 0.3090487 0.30284175 0.29675877 0.29079735 0.2849551 0.27922967 0.27361876 0.26812008 0.26273146 0.2574507 0.25227565 0.24720426 0.24223445 0.2373642 0.23259155 0.22791457 0.22333135 0.21884002 0.21443877 0.21012579 0.20589934 0.20175768 0.19769914 0.19372205 0.1898248 0.18600579 0.18226345 0.17859627 0.17500272 0.17148137 0.16803074 0.16464943 0.16133606 0.15808927 0.15490772 0.1517901 0.14873515 0.14574161 0.14280824 0.13993384 0.13711722 0.13435724 0.13165277 0.12900268 0.12640586 0.12386128 0.12136788 0.118924625 0.116530515 0.114184566 0.11188581 0.1096333 0.10742611 0.105263315 0.10314404 0.10106741 0.09903256 0.09703866 0.095084876 0.09317041 0.091294475 0.08945629 0.087655105 0.08589016 0.084160745 0.08246613 0.08080564 0.07917856 0.07758423 0.07602199 0.0744912 0.07299122 0.071521446 0.07008125 0.06867005 0.06728726 0.0659323 0.064604625 0.06330368 0.06202892 0.06077983 0.05955588 0.05835658 0.05718142 0.056029927 0.054901615 0.05379602 0.052712686 0.051651165 0.050611015

</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="271.851" Num="5" zHalfNm="251.453" Error="0.689">
-52.662 -0.144 0.014 -0.011 -0.042
</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="6516.335" A="-1.15173294E11" B="3.5547312E7" C="-2742.723" Error="0.00175"/>
<QuasiParabolic ID="2" StartDistance="6516.335" EndDistance="6552.671" A="0.0" B="567.3526" C="-0.04702983" Error="0.0112"/>
<QuasiParabolic ID="3" StartDistance="6552.671" EndDistance="6585.0" A="2.61270999E10" B="-8053033.5" C="620.5177" Error="0.0112"/>
<QuasiParabolic ID="4" StartDistance="6585.0" EndDistance="6589.0" A="1.10813472E12" B="-3.36681024E8" C="25573.287" Error="0.0343"/>
<QuasiParabolic ID="5" StartDistance="6589.0" EndDistance="6604.0" A="7.9787364E12" B="-2.42215731E9" C="183827.67" Error="0.0642"/>
<QuasiParabolic ID="6" StartDistance="6604.0" EndDistance="6628.0" A="1.50573018E13" B="-4.5658778E9" C="346132.38" Error="0.0482"/>
<QuasiParabolic ID="7" StartDistance="6628.0" EndDistance="6641.851" A="-3.5493018E13" B="1.06876887E10" C="-804559.1" Error="0.0124"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="109.006" Depth="0.154"/>
<TopsideChapman PeakHeight="271.851" PeakDensity="154164.08" PeakScaleHeight="15.36" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
