<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-16 -106 05:55:00.000"
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: 100%</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.16 (106) 05:55:00</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">
FF202610604160555001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.675" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.465" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="9.270" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.550" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.550" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.025" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="307.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="307.500" 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="0.025" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.625" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="318.237" 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="272.623" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="250.771" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.334" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="31.122" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.636" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="16.347" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="31.770" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.980" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="6">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.55 2.575 2.6 2.625 2.65 2.675
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
307.500 310.000 313.537 318.237 324.787 334.546
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 66 0 63 63 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
1.5625 1.5625 -10.9375 1.5625 1.5625 10.9375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="418">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 146.398 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 182.796 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 219.194 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 272.623 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0
</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 0.35179353 0.3507929 0.34957802 0.34822688 0.34667078 0.34491616 0.34304103 0.3409108 0.33853704 0.33600035 0.3333109 0.33034915 0.32719862 0.3237516 0.32015628 0.3162547 0.31213924 0.30773142 0.30307606 0.29811853 0.2928964 0.2873172 0.28139088 0.27515143 0.26850963 0.26138437 0.2538612 0.24583986 0.23728965 0.22814931 0.21839052 0.20793809 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 0.20086312 0.20509413 0.20932513 0.21355613 0.21778713 0.22201814 0.22624913 0.23048013 0.23471114 0.23894215 0.24317314 0.24740414 0.25163513 0.25586614 0.26009715 0.26432815 0.26855916 0.27279016 0.27702117 0.28125215 0.28548315 0.28971416 0.29394516 0.29817617 0.30240718 0.30663818 0.31086916 0.31510016 0.31933117 0.32356218 0.32779318 0.3320242 0.3362552 0.34048617 0.34471717 0.34894818 0.3531792 0.354 0.37713528 0.40651336 0.4369048 0.46852827 0.50154823 0.5361137 0.5723242 0.6102799 0.6500315 0.6916287 0.7350649 0.7803323 0.8273839 0.8761567 0.9265516 0.9784693 1.0317836 1.086356 1.1420614 1.198749 1.2562573 1.3144696 1.3732204 1.4323841 1.4918263 1.5514039 1.6109989 1.670469 1.7297038 1.7885612 1.8469124 1.9046382 1.96159 2.0176191 2.0725882 2.1263342 2.1786926 2.2295077 2.2785869 2.3257554 2.3707964 2.413538 2.4537451 2.491233 2.5257847 2.5571961 2.5852594 2.6097922 2.6306233 2.6475923 2.6605735 2.6694598 2.6741824 2.675 2.6748617 2.6731791 2.6696455 2.6643376 2.6573327 2.6487076 2.63854 2.6269062 2.6138818 2.5995426 2.5839617 2.567212 2.5493643 2.5304883 2.5106509 2.4899187 2.4683552 2.446022 2.4229796 2.3992853 2.374995 2.3501623 2.3248386 2.2990732 2.2729137 2.2464051 2.2195907 2.1925118 2.1652074 2.1377149 2.1100698 2.0823054 2.054454 2.0265455 1.9986085 1.9706693 1.9427536 1.9148848 1.8870854 1.8593762 1.8317767 1.8043052 1.7769786 1.7498128 1.7228225 1.6960212 1.6694216 1.6430352 1.6168727 1.5909438 1.5652575 1.5398219 1.5146444 1.4897314 1.4650892 1.4407228 1.4166371 1.392836 1.3693231 1.3461018 1.3231741 1.3005426 1.2782086 1.2561737 1.2344387 1.213004 1.19187 1.1710365 1.1505032 1.1302695 1.1103344 1.0906968 1.0713555 1.0523087 1.0335549 1.0150921 0.99691826 0.97903126 0.9614287 0.9441081 0.92706704 0.9103027 0.8938125 0.8775934 0.8616427 0.84595734 0.8305343 0.8153705 0.80046284 0.7858082 0.7714033 0.75724506 0.7433301 0.72965527 0.7162173 0.7030128 0.6900387 0.6772915 0.6647681 0.65246516 0.6403794 0.6285077 0.6168467 0.6053932 0.594144 0.58309597 0.57224596 0.5615908 0.5511274 0.54085267 0.53076357 0.52085704 0.51113015 0.50157994 0.49220344 0.48299778 0.47396007 0.4650875 0.4563773 0.44782665 0.43943286 0.43119326 0.42310515 0.41516596 0.40737304 0.39972392 0.39221603 0.38484693 0.37761417 0.37051532 0.36354804 0.35671 0.3499989 0.34341243 0.33694845 0.3306047 0.32437906 0.31826937 0.31227356 0.3063896 0.3006154 0.29494905 0.28938854 0.28393197 0.27857745 0.2733231 0.26816708 0.26310763 0.25814295 0.2532713 0.24849102 0.24380039 0.23919776 0.2346815 0.23025006 0.22590183 0.2216353 0.21744893 0.21334127 0.20931083 0.20535621 0.20147598 0.19766878 0.19393322 0.19026798 0.18667176 0.18314329 0.17968127 0.17628449 0.17295171 0.16968176 0.16647345 0.16332564 0.16023718 0.15720697 0.15423392 0.15131696 0.14845504 0.14564712 0.14289221 0.14018929 0.1375374 0.13493559 0.1323829 0.12987842 0.12742123 0.12501045 0.122645214 0.120324664 0.11804795 0.11581426 0.11362278 0.11147271 0.10936327 0.10729371 0.10526326 0.103271194 0.10131679 0.09939933 0.09751812 0.09567249 0.09386175 0.09208525 0.09034235 0.088632405 0.0869548 0.085308924 0.08369418 0.08210998 0.080555744 0.07903091 0.077534914 0.076067224 0.0746273 0.07321462 0.07182867 0.07046893 0.06913493 0.06782617 0.06654217 0.065282464 0.0640466 0.06283412 0.061644584 0.06047756 0.05933262 0.05820935 0.057107337 0.05602618 0.054965485 0.053924866 0.052903943 0.05190234 0.050919697

</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="2.675" PeakHeight="272.623" Num="5" zHalfNm="250.771" Error="0.445">
-52.867 -0.992 0.65 -0.386 0.166
</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="6516.398" A="-1.14778194E11" B="3.5425368E7" C="-2733.3137" Error="0.00174"/>
<QuasiParabolic ID="2" StartDistance="6516.398" EndDistance="6552.796" A="0.0" B="-1221.1953" C="0.22743905" Error="0.0269"/>
<QuasiParabolic ID="3" StartDistance="6552.796" EndDistance="6589.0" A="4.6981411E10" B="-1.4399724E7" C="1103.3945" Error="0.0269"/>
<QuasiParabolic ID="4" StartDistance="6589.0" EndDistance="6590.0" A="2.42198554E13" B="-7.351742E9" C="557890.6" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6590.0" EndDistance="6593.0" A="-1.58341202E12" B="4.792952E8" C="-36270.0" Error="0.0226"/>
<QuasiParabolic ID="6" StartDistance="6593.0" EndDistance="6628.0" A="6.3981979E12" B="-1.9419424E9" C="147351.84" Error="0.0367"/>
<QuasiParabolic ID="7" StartDistance="6628.0" EndDistance="6639.0" A="-1.5456049E13" B="4.6525798E9" C="-350122.7" Error="0.00727"/>
<QuasiParabolic ID="8" StartDistance="6639.0" EndDistance="6642.623" A="-2.1653539E13" B="6.519575E9" C="-490730.84" Error="5.57E-5"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="109.194" Depth="0.154"/>
<TopsideChapman PeakHeight="272.623" PeakDensity="88779.47" PeakScaleHeight="16.347" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
