<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-15 -105 02:15:00.000"
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: 40% PACIFIC flags: F2x cusp not found, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, F2 cusps do not match</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.15 (105) 02:15:00</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">
FF202610504150215001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="23" >
<URSI ID="00" Val="2.875" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.398" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="9.769" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.475" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.475" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="280.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="280.000" 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="0.025" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.575" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="280.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.575" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.575" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="279.056" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="254.423" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.839" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="35.181" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.829" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="18.834" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="33.790" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.490" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="17">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.475 2.5 2.525 2.55 2.575 2.6 2.625 2.65 2.675 2.7 2.725 2.75 2.775 2.8 2.825 2.85 2.875
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
285.000 283.750 282.500 281.250 280.000 300.000 302.500 302.500 304.807 307.630 311.163 315.714 321.796 330.339 343.214 364.835 408.700
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 0 0 0 72 72 72 75 69 0 0 69 69 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 -1.5625 -1.5625 -1.5625 4.6875
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="465">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 147.145 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 184.29 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 221.435 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 279.056 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0
</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 0.3413979 0.3392231 0.3367418 0.33417124 0.3313214 0.32827562 0.32504994 0.321539 0.31782994 0.31388885 0.3097459 0.30527142 0.30056813 0.29560846 0.29023984 0.2846439 0.2787337 0.27239043 0.26570985 0.2586191 0.25109136 0.24305843 0.23452243 0.2253187 0.21557693 0.2051416 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 0.2029436 0.20708951 0.21123543 0.21538134 0.21952726 0.22367318 0.22781909 0.231965 0.23611091 0.24025683 0.24440275 0.24854866 0.25269458 0.2568405 0.26098642 0.2651323 0.26927823 0.27342415 0.27757007 0.281716 0.28586188 0.2900078 0.29415372 0.29829964 0.30244556 0.30659145 0.31073737 0.3148833 0.3190292 0.32317513 0.32732105 0.33146694 0.33561286 0.33975878 0.3439047 0.34805062 0.3521965 0.354 0.36842528 0.39560953 0.42475948 0.45570248 0.48826662 0.52231807 0.5577594 0.594532 0.6326001 0.67199165 0.7127081 0.7548084 0.79833746 0.8433731 0.88998187 0.9382322 0.98819846 1.039949 1.0935563 1.1490566 1.2064817 1.2658408 1.3271025 1.3901889 1.455009 1.5213869 1.5890924 1.6578457 1.7273247 1.7971456 1.8668798 1.9361173 2.0044246 2.0713756 2.1366112 2.199785 2.260624 2.3188872 2.374417 2.4270601 2.4767509 2.5234268 2.5670621 2.6076689 2.645246 2.679827 2.7114544 2.7401626 2.7659879 2.7889826 2.809185 2.8266268 2.8413508 2.8533797 2.8627424 2.869457 2.8735385 2.8749943 2.875 2.8743021 2.8720737 2.8683658 2.8632321 2.8567276 2.8489058 2.8398216 2.8295286 2.8180802 2.8055298 2.79193 2.7773323 2.7617874 2.7453456 2.7280557 2.7099657 2.6911225 2.6715717 2.651358 2.6305246 2.6091135 2.5871656 2.5647206 2.5418165 2.51849 2.4947774 2.470713 2.4463296 2.421659 2.3967323 2.3715785 2.346226 2.3207018 2.2950318 2.2692404 2.2433515 2.2173874 2.1913698 2.165319 2.139254 2.113194 2.0871558 2.0611565 2.0352113 2.0093353 1.9835426 1.9578462 1.9322585 1.9067914 1.8814558 1.8562618 1.8312193 1.8063372 1.781624 1.7570871 1.7327342 1.7085719 1.6846062 1.660843 1.6372875 1.6139445 1.5908184 1.5679132 1.5452323 1.5227791 1.5005563 1.4785666 1.4568123 1.435295 1.4140165 1.3929781 1.372181 1.351626 1.3313138 1.3112448 1.2914193 1.2718371 1.2524981 1.2334021 1.2145485 1.1959368 1.1775659 1.1594353 1.1415437 1.12389 1.106473 1.0892912 1.0723433 1.0556277 1.0391427 1.0228868 1.0068579 0.9910545 0.9754745 0.96011597 0.94497705 0.9300556 0.91534954 0.9008568 0.8865752 0.8725026 0.8586368 0.8449756 0.8315166 0.81825775 0.8051967 0.7923311 0.7796588 0.76717734 0.75488454 0.74277806 0.73085564 0.7191149 0.7075536 0.6961695 0.6849601 0.67392343 0.66305697 0.65235853 0.641826 0.6314569 0.6212492 0.6112006 0.60130894 0.59157205 0.58198774 0.5725539 0.56326836 0.55412906 0.5451339 0.5362808 0.5275677 0.5189926 0.5105534 0.5022482 0.4940751 0.48603198 0.47811702 0.4703283 0.46266392 0.45512202 0.44770077 0.44039834 0.43321297 0.42614284 0.4191862 0.41234136 0.40560657 0.39898017 0.39246047 0.38604584 0.37973467 0.37352535 0.3674163 0.36140594 0.35549277 0.34967527 0.3439519 0.33832127 0.33278185 0.32733223 0.32197103 0.3166968 0.3115082 0.3064039 0.3013825 0.29644278 0.29158336 0.286803 0.28210047 0.27747446 0.27292383 0.2684473 0.26404375 0.259712 0.25545087 0.25125927 0.24713604 0.24308012 0.23909043 0.23516588 0.23130544 0.22750807 0.22377275 0.2200985 0.21648431 0.21292923 0.2094323 0.20599258 0.20260914 0.19928107 0.19600748 0.19278747 0.1896202 0.1865048 0.18344042 0.18042624 0.17746145 0.17454524 0.17167683 0.16885543 0.16608028 0.16335063 0.16066575 0.15802489 0.15542734 0.1528724 0.15035938 0.14788757 0.14545633 0.14306499 0.14071289 0.13839938 0.13612385 0.13388568 0.13168424 0.12951896 0.12738922 0.12529445 0.123234086 0.12120755 0.119214304 0.11725379 0.11532548 0.113428846 0.11156336 0.10972854 0.10792385 0.10614881 0.104402944 0.10268576 0.10099679 0.09933558 0.097701676 0.096094616 0.09451397 0.09295931 0.091430195 0.08992621 0.08844696 0.08699202 0.085561 0.0841535 0.08276915 0.08140755 0.080068335 0.07875115 0.07745561 0.076181374 0.07492809 0.07369542 0.07248302 0.071290545 0.07011769 0.06896412 0.06782952 0.06671358 0.06561599 0.06453645 0.06347466 0.062430345 0.0614032 0.06039295 0.059399314 0.05842202 0.057460804 0.056515396 0.05558554 0.05467098 0.053771462 0.05288674 0.05201657 0.051160716 0.050318938

</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="2.875" PeakHeight="279.056" Num="5" zHalfNm="254.423" Error="1.493">
-59.74 3.758 -2.607 1.327 -0.359
</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="6517.145" A="-1.10232617E11" B="3.4022412E7" C="-2625.0608" Error="0.00177"/>
<QuasiParabolic ID="2" StartDistance="6517.145" EndDistance="6554.29" A="0.0" B="-875.44214" C="0.17436531" Error="0.0199"/>
<QuasiParabolic ID="3" StartDistance="6554.29" EndDistance="6585.0" A="4.4514329E10" B="-1.3644798E7" C="1045.6407" Error="0.0199"/>
<QuasiParabolic ID="4" StartDistance="6585.0" EndDistance="6590.0" A="-9.7019453E10" B="2.9341924E7" C="-2218.3472" Error="0.00393"/>
<QuasiParabolic ID="5" StartDistance="6590.0" EndDistance="6593.0" A="6.0569834E12" B="-1.83833728E9" C="139487.2" Error="0.015"/>
<QuasiParabolic ID="6" StartDistance="6593.0" EndDistance="6604.0" A="3.77389475E12" B="-1.1457577E9" C="86963.35" Error="0.0118"/>
<QuasiParabolic ID="7" StartDistance="6604.0" EndDistance="6627.0" A="9.7272453E12" B="-2.94871066E9" C="223467.95" Error="0.0197"/>
<QuasiParabolic ID="8" StartDistance="6627.0" EndDistance="6639.0" A="-1.17509907E13" B="3.53332838E9" C="-265594.88" Error="0.00467"/>
<QuasiParabolic ID="9" StartDistance="6639.0" EndDistance="6649.056" A="-1.46173361E13" B="4.3968154E9" C="-330626.3" Error="1.88E-4"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="111.435" Depth="0.154"/>
<TopsideChapman PeakHeight="279.056" PeakDensity="102551.18" PeakScaleHeight="18.834" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
