<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-17 -107 03:05:00.000"
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" >
2026.04.17 (107) 03:05:00</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">
FF202610704170305001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.691" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="14.209" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.425" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.425" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.225" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="220.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="220.000" 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="0.075" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="268.427" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.425" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.425" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="240.480" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="215.282" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.632" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="35.817" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.489" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="19.540" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="29.640" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="4.160" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="58">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.425 2.45 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 2.9 2.925 2.95 2.975 3.0 3.025 3.05 3.075 3.1 3.125 3.15 3.175 3.2 3.225 3.25 3.275 3.3 3.325 3.35 3.375 3.4 3.425 3.45 3.475 3.5 3.525 3.55 3.575 3.6 3.625 3.65 3.675 3.7 3.725 3.75 3.775 3.8 3.825 3.85
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
220.000 220.000 220.000 220.000 220.000 222.500 222.500 222.500 222.500 222.500 225.000 225.000 225.000 225.000 227.500 227.500 227.500 227.500 230.000 230.500 231.000 231.500 232.000 232.500 232.500 235.000 235.000 235.000 237.500 237.500 237.500 240.000 240.000 242.500 242.500 242.500 245.000 247.500 247.500 247.500 250.000 252.500 252.500 255.000 257.500 257.500 259.760 262.296 265.162 268.427 272.181 276.541 281.669 287.785 295.207 304.403 316.094 331.457
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
87 87 75 78 78 75 78 78 75 75 72 75 75 75 75 75 51 51 60 0 0 0 0 72 84 84 87 84 84 84 84 81 96 93 81 84 105 102 87 87 99 96 84 84 87 84 84 84 81 78 0 78 69 0 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 -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 -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="454">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 135.66667 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 161.33333 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 240.48 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0
</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 0.353812 0.35324875 0.3523882 0.35108605 0.34949994 0.34749252 0.3450799 0.34228173 0.3391207 0.33555436 0.33154994 0.32708573 0.3222145 0.31684378 0.31099588 0.3045735 0.29760364 0.290026 0.28171796 0.27274016 0.2629728 0.2523031 0.24063194 0.22781542 0.21374473 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 0.204 0.21 0.216 0.222 0.228 0.234 0.24 0.246 0.252 0.258 0.264 0.27 0.276 0.282 0.288 0.294 0.3 0.306 0.312 0.318 0.324 0.33 0.336 0.342 0.348 0.354 0.38481992 0.42065558 0.46118334 0.50569206 0.5533414 0.60348094 0.6557435 0.70999163 0.7662891 0.8248121 0.88585967 0.9497798 1.0170014 1.0880036 1.1633583 1.2437186 1.329798 1.4223597 1.5222273 1.630134 1.7465875 1.8715835 2.004321 2.142826 2.2840397 2.4242058 2.5597014 2.687814 2.8070188 2.9166865 3.0169876 3.1084034 3.1916203 3.2673175 3.3362052 3.3988929 3.4559283 3.507797 3.5549166 3.5976465 3.636299 3.671144 3.7024088 3.7302895 3.75496 3.776559 3.7952085 3.8110116 3.8240497 3.834394 3.8420942 3.8471887 3.8497045 3.85 3.8497353 3.8477619 3.8439162 3.838262 3.830865 3.8217897 3.8111014 3.798865 3.7851453 3.7700062 3.7535112 3.735723 3.7167037 3.696514 3.6752133 3.6528609 3.629514 3.6052287 3.58006 3.5540614 3.527285 3.4997816 3.4716 3.4427884 3.4133925 3.3834577 3.3530269 3.3221421 3.2908437 3.2591703 3.2271595 3.1948473 3.1622682 3.1294556 3.0964413 3.0632555 3.0299277 2.996486 2.962957 2.9293656 2.8957367 2.8620932 2.828457 2.7948492 2.7612896 2.727797 2.694389 2.661083 2.6278946 2.5948389 2.56193 2.5291812 2.4966054 2.464214 2.4320185 2.4000287 2.3682547 2.3367052 2.3053887 2.274313 2.243485 2.2129114 2.1825986 2.1525517 2.1227763 2.0932765 2.064057 2.0351214 2.0064728 1.9781147 1.9500493 1.922279 1.8948058 1.8676312 1.8407568 1.8141835 1.787912 1.7619431 1.7362769 1.7109135 1.685853 1.6610948 1.6366384 1.6124833 1.5886284 1.5650728 1.5418153 1.5188546 1.4961892 1.4738177 1.4517384 1.4299492 1.4084486 1.3872344 1.3663048 1.3456572 1.3252898 1.3052003 1.2853862 1.2658453 1.2465749 1.2275727 1.2088361 1.1903625 1.1721493 1.154194 1.1364939 1.1190462 1.1018482 1.0848974 1.0681908 1.0517259 1.0354998 1.0195097 1.003753 0.9882268 0.97292835 0.957855 0.9430039 0.9283724 0.9139576 0.89975697 0.88576764 0.8719869 0.8584122 0.84504074 0.8318699 0.818897 0.80611944 0.7935346 0.78113985 0.7689327 0.7569105 0.7450708 0.7334111 0.7219288 0.7106215 0.6994868 0.6885222 0.6777254 0.6670939 0.65662545 0.6463177 0.63616836 0.62617517 0.6163358 0.60664815 0.5971099 0.58771896 0.57847315 0.5693704 0.56040853 0.5515855 0.54289925 0.5343478 0.5259291 0.5176412 0.5094822 0.5014501 0.4935431 0.4857592 0.47809666 0.4705536 0.46312827 0.45581883 0.4486236 0.44154078 0.4345687 0.4277057 0.4209501 0.41430026 0.4077546 0.4013115 0.39496937 0.3887267 0.38258198 0.3765337 0.37058035 0.3647205 0.35895267 0.3532755 0.34768757 0.3421875 0.33677393 0.33144554 0.32620096 0.32103896 0.31595823 0.31095752 0.30603558 0.30119118 0.2964231 0.2917302 0.28711128 0.2825652 0.27809083 0.27368703 0.2693527 0.26508677 0.2608882 0.25675586 0.2526888 0.24868594 0.2447463 0.2408689 0.23705274 0.23329687 0.22960036 0.22596227 0.22238167 0.21885768 0.2153894 0.21197596 0.2086165 0.20531015 0.20205611 0.19885354 0.19570163 0.19259958 0.18954661 0.18654196 0.18358485 0.18067454 0.1778103 0.17499138 0.1722171 0.16948673 0.16679959 0.164155 0.16155228 0.15899077 0.15646984 0.15398881 0.15154709 0.14914404 0.14677905 0.14445153 0.14216086 0.1399065 0.13768785 0.13550435 0.13335544 0.13124059 0.12915924 0.12711088 0.12509498 0.12311102 0.1211585 0.11923693 0.11734582 0.11548467 0.11365303 0.11185041 0.110076375 0.10833046 0.10661221 0.10492121 0.103257015 0.1016192 0.10000735 0.09842105 0.09685991 0.09532352 0.09381148 0.09232342 0.09085895 0.08941771 0.087999314 0.08660341 0.08522964 0.08387766 0.08254711 0.081237674 0.07994899 0.078680746 0.07743261 0.07620428 0.07499541 0.07380573 0.072634906 0.07148266 0.07034868 0.06923269 0.0681344 0.06705353 0.06598979 0.06494293 0.063912675 0.06289876 0.061900932 0.060918923 0.059952494 0.059001394 0.058065377 0.05714421 0.056237653 0.055345476 0.05446745 0.05360335 0.05275296 0.05191606 0.05109243 0.050281867

</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="3.85" PeakHeight="240.48" Num="5" zHalfNm="215.282" Error="1.129">
-60.767 12.168 -7.36 3.417 -0.938
</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="6505.667" A="-2.30120505E11" B="7.1024848E7" C="-5480.187" Error="0.00139"/>
<QuasiParabolic ID="2" StartDistance="6505.667" EndDistance="6531.333" A="0.0" B="19.407955" C="0.037028283" Error="2.88E-4"/>
<QuasiParabolic ID="3" StartDistance="6531.333" EndDistance="6556.0" A="6.7116876E10" B="-2.0654518E7" C="1589.054" Error="5.59E-4"/>
<QuasiParabolic ID="4" StartDistance="6556.0" EndDistance="6560.0" A="8.5309234E12" B="-2.60265754E9" C="198508.14" Error="0.00977"/>
<QuasiParabolic ID="5" StartDistance="6560.0" EndDistance="6566.0" A="6.6473212E12" B="-2.02838886E9" C="154737.66" Error="0.00781"/>
<QuasiParabolic ID="6" StartDistance="6566.0" EndDistance="6573.0" A="1.41749052E13" B="-4.3212867E9" C="329341.5" Error="0.0107"/>
<QuasiParabolic ID="7" StartDistance="6573.0" EndDistance="6585.0" A="4.3394684E13" B="-1.32121375E10" C="1005657.56" Error="0.0193"/>
<QuasiParabolic ID="8" StartDistance="6585.0" EndDistance="6593.0" A="-4.4115933E13" B="1.33666386E10" C="-1012472.75" Error="0.0105"/>
<QuasiParabolic ID="9" StartDistance="6593.0" EndDistance="6610.48" A="-1.99713211E13" B="6.0423209E9" C="-457011.06" Error="0.00497"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="77.0" Depth="0.154"/>
<TopsideChapman PeakHeight="240.48" PeakDensity="183901.98" PeakScaleHeight="19.54" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
