<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-23 -113 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 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" >
2026.04.23 (113) 02:15:00</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">
FF202611304230215001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.352" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="8.548" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="2.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="272.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="272.500" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.475" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="330.685" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="280.786" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="255.235" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.839" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="36.392" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.678" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="19.391" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="35.900" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.260" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="23">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.0 2.025 2.05 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
272.500 275.000 276.944 278.889 280.833 282.778 284.722 286.667 288.611 290.556 292.500 296.250 300.000 303.750 307.500 311.250 315.000 319.731 324.934 330.685 337.074 344.214 352.246
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 63 0 0 0 0 0 0 0 0 57 0 0 0 0 0 66 66 66 66 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
1.5625 -1.5625 -1.5625 7.8125 -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="467">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 147.24066 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 184.48134 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 221.722 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 280.786 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0
</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 0.350941 0.34979865 0.3485186 0.34703198 0.34534484 0.34353513 0.34146762 0.33929172 0.33687723 0.33423728 0.3314516 0.3284028 0.3251739 0.32172063 0.31806543 0.31411648 0.30996525 0.3055355 0.30087194 0.2958973 0.2906061 0.28507593 0.27913558 0.27291447 0.26625675 0.2592364 0.25171614 0.24376175 0.23525727 0.22620194 0.21650416 0.20615682 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 0.20214482 0.20628008 0.21041535 0.21455061 0.21868588 0.22282115 0.22695641 0.23109168 0.23522694 0.23936221 0.24349746 0.24763273 0.251768 0.25590327 0.26003852 0.26417378 0.26830906 0.2724443 0.2765796 0.28071484 0.28485012 0.28898537 0.29312065 0.2972559 0.30139115 0.30552644 0.3096617 0.31379697 0.31793222 0.3220675 0.32620275 0.33033803 0.33447328 0.33860853 0.3427438 0.34687907 0.35101435 0.354 0.36085245 0.3863729 0.41320118 0.44127813 0.47055075 0.5009876 0.5325579 0.5652502 0.5990784 0.63403434 0.67014724 0.7074153 0.7458704 0.7855257 0.8264094 0.86851555 0.91187656 0.9564816 1.0023217 1.0493878 1.0976443 1.1470526 1.1975632 1.2490823 1.3015172 1.3547629 1.4086922 1.4631315 1.5179425 1.5729187 1.6278735 1.6826079 1.7369258 1.7906089 1.8434589 1.895283 1.9458833 1.9951079 2.042794 2.088781 2.1329706 2.1752295 2.2154768 2.253627 2.2896156 2.3233874 2.354895 2.3841062 2.4109888 2.4355264 2.4577029 2.477504 2.4949224 2.5099556 2.5226016 2.5328543 2.5407155 2.5461845 2.5492609 2.55 2.5499697 2.5490367 2.5468314 2.5433977 2.538779 2.5330198 2.5261643 2.5182562 2.5093396 2.4994578 2.4886544 2.4769714 2.4644516 2.4511356 2.4370646 2.4222784 2.4068162 2.390716 2.3740156 2.356751 2.3389575 2.3206701 2.301922 2.2827458 2.263173 2.2432342 2.2229583 2.2023742 2.1815093 2.1603901 2.139042 2.117489 2.0957553 2.0738633 2.0518346 2.0296898 2.0074487 1.9851302 1.9627527 1.9403334 1.9178885 1.8954339 1.8729845 1.8505543 1.8281568 1.8058048 1.7835104 1.761285 1.7391392 1.7170832 1.6951268 1.6732788 1.6515478 1.6299416 1.6084677 1.587133 1.5659442 1.5449071 1.5240273 1.5033102 1.4827604 1.4623826 1.4421805 1.4221581 1.4023187 1.3826654 1.363201 1.343928 1.3248485 1.3059647 1.2872783 1.2687906 1.250503 1.2324165 1.214532 1.1968503 1.1793717 1.1620965 1.1450251 1.1281573 1.1114931 1.0950321 1.0787741 1.0627184 1.0468644 1.0312115 1.0157588 1.0005053 0.98545015 0.9705922 0.95593023 0.941463 0.9271893 0.91310775 0.89921683 0.8855152 0.8720013 0.8586736 0.8455304 0.83257014 0.81979114 0.80719167 0.79477006 0.7825245 0.7704533 0.7585546 0.7468265 0.7352674 0.7238753 0.71264833 0.70158476 0.69068265 0.67994016 0.6693554 0.65892655 0.64865166 0.6385289 0.6285564 0.6187323 0.60905474 0.5995219 0.5901318 0.5808828 0.571773 0.56280047 0.55396354 0.54526037 0.5366891 0.5282481 0.5199355 0.51174957 0.5036886 0.4957508 0.48793456 0.48023817 0.4726599 0.46519813 0.4578512 0.45061752 0.44349542 0.43648335 0.4295797 0.42278293 0.4160915 0.40950388 0.40301853 0.39663398 0.39034876 0.3841614 0.37807047 0.3720745 0.36617216 0.36036202 0.3546427 0.34901285 0.3434711 0.3380162 0.33264682 0.32736164 0.3221594 0.3170389 0.31199884 0.307038 0.30215523 0.29734927 0.29261902 0.28796327 0.28338093 0.27887082 0.27443185 0.27006295 0.26576304 0.26153105 0.2573659 0.25326663 0.24923217 0.24526152 0.2413537 0.23750775 0.23372267 0.22999756 0.22633147 0.22272347 0.21917267 0.21567817 0.2122391 0.20885459 0.20552379 0.20224586 0.19901995 0.19584529 0.19272104 0.18964644 0.18662067 0.183643 0.18071266 0.17782891 0.174991 0.17219824 0.1694499 0.16674528 0.16408369 0.16146447 0.15888692 0.15635042 0.1538543 0.15139791 0.14898065 0.14660189 0.144261 0.14195742 0.13969055 0.13745978 0.13526456 0.13310434 0.13097854 0.12888663 0.12682807 0.12480233 0.12280889 0.12084723 0.118916854 0.11701727 0.115147986 0.11330851 0.111498386 0.10971713 0.1079643 0.10623944 0.10454209 0.102871835 0.10122823 0.09961085 0.09801929 0.09645313 0.09491197 0.09339541 0.09190306 0.09043453 0.088989444 0.08756743 0.086168125 0.08479115 0.083436176 0.082102835 0.08079078 0.07949968 0.0782292 0.076979004 0.07574878 0.0745382 0.07334696 0.072174735 0.071021244 0.06988618 0.06876924 0.06767014 0.0665886 0.06552434 0.06447708 0.06344655 0.062432483 0.061434615 0.060452692 0.059486456 0.058535658 0.05760005 0.056679394 0.05577345 0.054881975 0.054004747 0.053141534 0.052292116 0.051456273 0.050633784

</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="2.55" PeakHeight="280.786" Num="5" zHalfNm="255.235" Error="1.251">
-60.477 2.231 -1.339 0.677 -0.156
</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="6517.241" A="-1.0966922E11" B="3.3848524E7" C="-2611.6436" Error="0.00177"/>
<QuasiParabolic ID="2" StartDistance="6517.241" EndDistance="6554.481" A="0.0" B="-1136.6995" C="0.2144497" Error="0.0257"/>
<QuasiParabolic ID="3" StartDistance="6554.481" EndDistance="6588.0" A="4.6045491E10" B="-1.4109222E7" C="1080.8562" Error="0.0257"/>
<QuasiParabolic ID="4" StartDistance="6588.0" EndDistance="6590.0" A="-6.0310166E11" B="1.82960336E8" C="-13875.85" Error="8.83E-4"/>
<QuasiParabolic ID="5" StartDistance="6590.0" EndDistance="6595.0" A="4.8028802E12" B="-1.45770176E9" C="110605.34" Error="0.0218"/>
<QuasiParabolic ID="6" StartDistance="6595.0" EndDistance="6605.0" A="3.09129458E12" B="-9.3864627E8" C="71253.14" Error="0.0274"/>
<QuasiParabolic ID="7" StartDistance="6605.0" EndDistance="6631.0" A="6.0619138E12" B="-1.83815245E9" C="139345.97" Error="0.0396"/>
<QuasiParabolic ID="8" StartDistance="6631.0" EndDistance="6650.786" A="-1.09179631E13" B="3.28320973E9" C="-246822.2" Error="0.0133"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="111.722" Depth="0.154"/>
<TopsideChapman PeakHeight="280.786" PeakDensity="80676.18" PeakScaleHeight="19.391" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
