<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-13 -103 02:25:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 45% PACIFIC flags: F2x cusp not found, One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.13 (103) 02:25:00</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">
FF202610304130225001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="28" >
<URSI ID="00" Val="2.725" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.469" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="9.452" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.075" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="2.650" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.550" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.000" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="305.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="305.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="34" Val="102.500" Name="h`Es" 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="2.725" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="326.961" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.550" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.550" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="274.025" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="253.028" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.796" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="2.075" Description="Minimum frequency of Es-layer" Units="MHz" />
<URSI ID="94" Val="29.896" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.631" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="15.571" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="30.880" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.880" Name="B1" QL="/" DL="/" />
<URSI ID="32" Val="2.550" Name="fbEs" Units="MHz" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="8">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.55 2.575 2.6 2.625 2.65 2.675 2.7 2.725
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
305.000 307.500 309.891 312.548 315.516 318.855 322.638 326.961
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 66 0 63 0 0 0 63
</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
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="Es" Polarization="O" Num="24">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
102.500 102.500 102.500 102.500 102.500 102.500 102.500 102.500 102.500 102.500 102.500 102.500 102.500 102.500 102.500 102.500 102.500 102.500 102.500 102.500 102.500 102.500 102.500 102.500
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 69 0 81 0 72 72 0 0 0 0 0 0 0 81 0 0 0 69 69 0 0 66 69
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="410">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 147.17967 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 184.35933 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 221.539 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 274.025 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0
</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 0.35265058 0.35186794 0.35086685 0.3497987 0.34844553 0.34695965 0.3453451 0.3434644 0.34146795 0.33922297 0.3368097 0.33417103 0.33138672 0.32833943 0.32511213 0.32159945 0.31794792 0.31400287 0.30980015 0.30537704 0.30066904 0.2957044 0.29042384 0.2848165 0.27889425 0.27261508 0.26591378 0.2588654 0.251306 0.24331449 0.23472774 0.22567275 0.2159201 0.20550363 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 0.2 0.20265368 0.20679572 0.21093777 0.21507981 0.21922188 0.22336392 0.22750597 0.23164801 0.23579006 0.23993212 0.24407417 0.24821621 0.25235826 0.2565003 0.26064235 0.2647844 0.26892644 0.27306852 0.27721056 0.2813526 0.28549466 0.2896367 0.29377875 0.2979208 0.30206284 0.3062049 0.31034693 0.314489 0.31863105 0.3227731 0.32691514 0.3310572 0.33519924 0.33934128 0.34348333 0.34762537 0.35176742 0.354 0.36857998 0.39959213 0.43062192 0.46232295 0.4951267 0.52934325 0.56522506 0.6029674 0.6427377 0.6846381 0.7287386 0.77505386 0.8235377 0.8740801 0.92653406 0.9807191 1.0364122 1.0933805 1.1514143 1.2102653 1.2697467 1.3296568 1.3898578 1.4501812 1.5105122 1.5707492 1.6307901 1.6905463 1.7499512 1.808913 1.8673706 1.9252386 1.9824358 2.038885 2.094456 2.1490667 2.2025683 2.2548306 2.3056886 2.3549418 2.4023962 2.4478018 2.4909024 2.5313952 2.5689783 2.6033127 2.6340466 2.6608374 2.6833358 2.701241 2.7142777 2.722241 2.7249947 2.725 2.7239702 2.7208328 2.7156773 2.7085938 2.6996741 2.6890092 2.676689 2.6628032 2.6474402 2.6306872 2.6126294 2.5933504 2.5729315 2.551452 2.5289886 2.505616 2.4814065 2.4564292 2.4307516 2.4044375 2.3775492 2.3501453 2.3222828 2.2940156 2.2653952 2.2364705 2.207288 2.177892 2.1483245 2.1186247 2.08883 2.058976 2.0290956 1.9992201 1.9693787 1.9395987 1.909906 1.8803244 1.8508761 1.821582 1.7924612 1.7635316 1.7348098 1.7063106 1.6780483 1.6500355 1.6222838 1.5948039 1.5676054 1.5406969 1.514086 1.48778 1.4617847 1.4361056 1.4107474 1.3857142 1.3610091 1.3366351 1.3125944 1.2888887 1.2655194 1.2424872 1.2197925 1.1974353 1.1754152 1.1537315 1.1323833 1.1113693 1.0906878 1.0703369 1.0503149 1.0306194 1.0112478 0.9921975 0.9734659 0.95505005 0.93694675 0.9191529 0.9016652 0.8844803 0.8675947 0.85100496 0.8347073 0.8186982 0.8029739 0.7875307 0.7723648 0.7574723 0.74284947 0.7284924 0.71439725 0.7005602 0.6869773 0.67364484 0.6605589 0.64771557 0.6351111 0.62274164 0.6106035 0.5986929 0.58700603 0.57553923 0.56428885 0.55325127 0.54242283 0.53180003 0.5213793 0.5111571 0.50113004 0.49129468 0.48164764 0.47218564 0.46290535 0.4538035 0.44487694 0.4361225 0.42753705 0.41911754 0.4108609 0.4027642 0.39482448 0.38703883 0.37940446 0.3719185 0.36457822 0.3573809 0.35032386 0.3434045 0.33662018 0.32996842 0.3234467 0.3170525 0.3107835 0.30463725 0.29861146 0.2927038 0.28691205 0.28123394 0.27566737 0.27021012 0.26486015 0.25961536 0.25447378 0.24943334 0.24449214 0.23964825 0.23489979 0.2302449 0.2256818 0.22120866 0.21682376 0.21252538 0.20831184 0.20418148 0.20013268 0.19616386 0.19227344 0.1884599 0.18472174 0.18105748 0.17746566 0.17394489 0.17049377 0.1671109 0.163795 0.16054471 0.15735875 0.15423587 0.15117481 0.14817438 0.14523336 0.14235061 0.13952497 0.13675529 0.1340405 0.13137951 0.12877126 0.12621471 0.12370883 0.12125263 0.11884513 0.116485365 0.11417239 0.111905284 0.10968315 0.107505076 0.105370216 0.1032777 0.101226695 0.09921638 0.097245954 0.09531462 0.093421616 0.09156617 0.08974755 0.08796502 0.086217865 0.08450539 0.0828269 0.08118173 0.07956921 0.07798871 0.07643958 0.074921206 0.073432975 0.07197429 0.07054457 0.06914323 0.06776972 0.066423476 0.06510397 0.06381066 0.062543035 0.061300583 0.060082804 0.058889206 0.057719313 0.056572653 0.055448767 0.054347202 0.053267512 0.05220927 0.051172044 0.05015542

</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="2.725" PeakHeight="274.025" Num="5" zHalfNm="253.028" Error="0.92">
-51.168 -2.338 1.544 -0.912 0.388
</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="6517.18" A="-1.10027891E11" B="3.3959224E7" C="-2620.1853" Error="0.00178"/>
<QuasiParabolic ID="2" StartDistance="6517.18" EndDistance="6554.359" A="0.0" B="-77.20304" C="0.051881123" Error="0.00256"/>
<QuasiParabolic ID="3" StartDistance="6554.359" EndDistance="6590.0" A="3.24158362E10" B="-9961725.0" C="765.33746" Error="0.00508"/>
<QuasiParabolic ID="4" StartDistance="6590.0" EndDistance="6592.0" A="6.2318943E12" B="-1.8914423E9" C="143518.03" Error="0.0213"/>
<QuasiParabolic ID="5" StartDistance="6592.0" EndDistance="6604.0" A="4.6837599E12" B="-1.42174131E9" C="107891.44" Error="0.0321"/>
<QuasiParabolic ID="6" StartDistance="6604.0" EndDistance="6618.0" A="8.9699239E12" B="-2.71979238E9" C="206169.08" Error="0.0143"/>
<QuasiParabolic ID="7" StartDistance="6618.0" EndDistance="6635.0" A="1.52178144E12" B="-4.68918048E8" C="36112.094" Error="0.0144"/>
<QuasiParabolic ID="8" StartDistance="6635.0" EndDistance="6644.025" A="-2.49228501E13" B="7.502335E9" C="-564585.2" Error="0.0042"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="111.539" Depth="0.154"/>
<TopsideChapman PeakHeight="274.025" PeakDensity="92129.34" PeakScaleHeight="15.571" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
