<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-20 -110 07:25:00.000"
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: 50% PACIFIC flags: F2o cusp not found, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.20 (110) 07:25:00</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">
FF202611004200725001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.575" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.430" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="8.833" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.325" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.325" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="2.925" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="280.966" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="280.966" 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="2.375" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="290.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.325" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.325" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="272.389" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="247.984" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.829" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="34.762" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.659" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="18.404" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="35.230" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.050" 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" >
2.325 2.35 2.375 2.4 2.425 2.45 2.475 2.5 2.525 2.55 2.575
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
280.966 285.000 290.000 297.500 302.500 310.000 317.500 325.000 335.000 347.500 358.767
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 0 66 63 63
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
1.5625 1.5625 -1.5625 1.5625 10.9375 -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="445">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 144.513 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 179.026 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 213.539 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 272.389 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0
</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 0.35149595 0.35042334 0.34906456 0.34757245 0.3458791 0.3439203 0.34177694 0.3393886 0.33676827 0.33393005 0.33088917 0.32759777 0.3240153 0.3201701 0.31609207 0.31175563 0.30709004 0.30209634 0.29686192 0.2912337 0.28521976 0.27885324 0.27203828 0.26475707 0.2570735 0.24879673 0.2399809 0.2305323 0.22036481 0.20946646 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 0.20434608 0.20880815 0.21327025 0.21773234 0.22219442 0.22665651 0.23111859 0.23558068 0.24004276 0.24450485 0.24896695 0.25342903 0.25789112 0.2623532 0.26681527 0.27127737 0.27573946 0.28020155 0.28466365 0.2891257 0.2935878 0.2980499 0.302512 0.30697405 0.31143615 0.31589824 0.32036033 0.32482243 0.3292845 0.33374658 0.33820868 0.34267077 0.34713286 0.35159492 0.354 0.365764 0.39198214 0.41916743 0.44735467 0.47657344 0.50685585 0.538216 0.5706778 0.60427386 0.63901323 0.67491275 0.71198034 0.7502223 0.78964925 0.8302539 0.87202495 0.9149527 0.95900846 1.0041697 1.0504059 1.0976655 1.1458949 1.1950465 1.245024 1.2957789 1.3471929 1.3992008 1.4516611 1.504489 1.5575522 1.6107177 1.6638565 1.7168267 1.7694674 1.8216568 1.8732239 1.9240131 1.9738781 2.0226662 2.0702167 2.1163924 2.1610384 2.2040162 2.2451868 2.2844207 2.3215945 2.3565955 2.3893015 2.4196203 2.4474547 2.4727201 2.4953372 2.5152335 2.532353 2.5466433 2.5580592 2.56657 2.5721474 2.5747762 2.575 2.5747247 2.5731084 2.5700896 2.5657198 2.5600512 2.5531359 2.5450258 2.5357728 2.5254288 2.5140443 2.50167 2.4883556 2.47415 2.459101 2.4432561 2.426661 2.409361 2.3913994 2.3728192 2.3536618 2.3339672 2.313775 2.2931225 2.2720463 2.2505815 2.2287624 2.2066214 2.18419 2.1614985 2.138576 2.1154504 2.0921478 2.0686944 2.045114 2.0214303 1.997665 1.9738394 1.9499737 1.9260868 1.9021969 1.878321 1.8544756 1.830676 1.8069365 1.7832711 1.7596925 1.736213 1.7128438 1.6895957 1.6664788 1.6435022 1.620675 1.598005 1.5755 1.5531669 1.531012 1.5090417 1.487261 1.4656755 1.4442892 1.4231067 1.4021316 1.3813673 1.360817 1.3404831 1.3203683 1.3004745 1.2808036 1.261357 1.2421359 1.2231413 1.2043741 1.1858348 1.1675236 1.1494409 1.1315863 1.1139598 1.0965611 1.0793893 1.0624442 1.0457246 1.0292298 1.0129585 0.9969097 0.9810821 0.96547437 0.9500849 0.9349124 0.9199551 0.90521127 0.8906793 0.8763573 0.8622435 0.84833586 0.8346326 0.8211315 0.80783075 0.7947282 0.78182185 0.7691095 0.756589 0.7442582 0.73211503 0.72015727 0.70838267 0.6967891 0.68537426 0.67413604 0.6630722 0.6521806 0.6414589 0.630905 0.6205166 0.6102916 0.6002278 0.590323 0.580575 0.57098174 0.561541 0.55225074 0.54310876 0.53411293 0.5252613 0.51655173 0.50798213 0.49955055 0.49125496 0.48309332 0.47506368 0.4671641 0.4593926 0.45174733 0.44422632 0.43682778 0.42954978 0.42239055 0.41534823 0.40842104 0.40160722 0.39490503 0.38831273 0.3818286 0.37545103 0.36917827 0.3630087 0.35694075 0.35097277 0.3451032 0.3393305 0.33365312 0.32806957 0.3225783 0.31717792 0.31186694 0.3066439 0.30150744 0.29645616 0.29148868 0.28660363 0.28179973 0.27707562 0.27243006 0.26786172 0.2633694 0.25895184 0.25460786 0.2503362 0.2461357 0.24200523 0.23794362 0.23394975 0.2300225 0.22616082 0.22236359 0.21862978 0.21495833 0.2113482 0.20779844 0.20430799 0.20087591 0.19750123 0.194183 0.1909203 0.18771218 0.18455777 0.18145618 0.1784065 0.17540792 0.17245956 0.1695606 0.16671021 0.16390759 0.16115195 0.15844251 0.1557785 0.15315916 0.15058374 0.14805153 0.1455618 0.14311384 0.14070694 0.13834046 0.13601367 0.13372596 0.13147664 0.12926508 0.12709066 0.12495275 0.12285074 0.12078403 0.11875204 0.116754174 0.11478988 0.11285858 0.11095973 0.10909278 0.10725721 0.10545248 0.10367808 0.1019335 0.10021825 0.09853183 0.09687375 0.09524355 0.09364075 0.0920649 0.09051555 0.088992245 0.08749456 0.08602205 0.084574305 0.08315091 0.08175145 0.08037553 0.07902274 0.07769272 0.07638506 0.075099394 0.07383536 0.07259259 0.07137071 0.070169404 0.0689883 0.06782707 0.06668537 0.06556288 0.06445928 0.06337424 0.062307466 0.061258636 0.060227454 0.059213623 0.058216855 0.057236858 0.05627335 0.055326056 0.054394707 0.053479027 0.05257876 0.05169364 0.050823417

</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="2.575" PeakHeight="272.389" Num="5" zHalfNm="247.984" Error="1.122">
-58.722 -0.219 -0.072 0.181 -0.018
</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="6514.513" A="-1.27589753E11" B="3.9379552E7" C="-3038.4204" Error="0.00169"/>
<QuasiParabolic ID="2" StartDistance="6514.513" EndDistance="6549.026" A="0.0" B="1448.3365" C="-0.18229254" Error="0.0285"/>
<QuasiParabolic ID="3" StartDistance="6549.026" EndDistance="6580.0" A="2.10475192E10" B="-6517624.0" C="504.50848" Error="0.0285"/>
<QuasiParabolic ID="4" StartDistance="6580.0" EndDistance="6581.0" A="-1.31425423E12" B="3.99349184E8" C="-30336.434" Error="3.18E-11"/>
<QuasiParabolic ID="5" StartDistance="6581.0" EndDistance="6592.0" A="3.56424666E12" B="-1.08325261E9" C="82306.16" Error="0.0359"/>
<QuasiParabolic ID="6" StartDistance="6592.0" EndDistance="6603.0" A="4.5438872E12" B="-1.3804736E9" C="104850.23" Error="0.0245"/>
<QuasiParabolic ID="7" StartDistance="6603.0" EndDistance="6626.0" A="5.3882771E12" B="-1.63623309E9" C="124217.14" Error="0.0398"/>
<QuasiParabolic ID="8" StartDistance="6626.0" EndDistance="6642.389" A="-1.3197625E13" B="3.97375846E9" C="-299114.56" Error="0.0117"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="103.539" Depth="0.154"/>
<TopsideChapman PeakHeight="272.389" PeakDensity="82265.82" PeakScaleHeight="18.404" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
