<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-20 -110 06:30:00.000"
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" >
2026.04.20 (110) 06:30:00</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">
FF202611004200630001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.725" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.532" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="9.624" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.025" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="250.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="250.000" 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="2.575" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="287.644" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.050" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.050" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="259.764" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="237.183" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.190" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="32.240" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.685" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="17.308" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="30.790" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.560" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="28">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 2.575 2.6 2.625 2.65 2.675 2.7 2.725
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
250.000 251.667 253.333 255.000 255.000 257.500 259.000 260.500 262.000 263.500 265.000 265.000 265.000 270.000 272.500 272.500 275.000 276.819 278.912 281.348 284.216 287.644 291.814 296.995 303.606 312.334 324.390 342.124
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 0 0 78 81 75 0 0 0 0 48 48 48 60 63 75 0 66 69 72 69 72 72 72 69 72 69 63
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="419">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 142.66667 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 175.33333 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 259.764 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0
</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 0.35354906 0.35298675 0.35220242 0.35119912 0.34998095 0.3485529 0.34684834 0.3448765 0.3427189 0.34031472 0.33767694 0.33475268 0.3315615 0.3281247 0.32440233 0.3203629 0.31604326 0.3114253 0.3064471 0.3011715 0.2954905 0.2894757 0.282966 0.27603868 0.26865014 0.2607728 0.25231564 0.24324727 0.23349129 0.22299255 0.211631 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 0.20314285 0.20785715 0.21257143 0.21728571 0.222 0.22671428 0.23142858 0.23614286 0.24085714 0.24557143 0.2502857 0.255 0.25971428 0.2644286 0.26914287 0.27385715 0.27857143 0.2832857 0.288 0.2927143 0.29742858 0.30214286 0.30685714 0.31157142 0.3162857 0.321 0.3257143 0.33042857 0.33514285 0.33985713 0.34457144 0.34928572 0.354 0.37947878 0.40810615 0.4397957 0.47430336 0.51129925 0.5504442 0.59146434 0.6341523 0.6783949 0.72415274 0.77142924 0.8202566 0.87071186 0.9228863 0.9768719 1.032748 1.0906014 1.1505048 1.212501 1.2765796 1.3426841 1.4107285 1.480477 1.5516891 1.6239648 1.6968788 1.7698902 1.8424387 1.9139205 1.9837959 2.0515535 2.1167238 2.178975 2.2380216 2.2936776 2.345829 2.3944173 2.4394224 2.4808803 2.518838 2.5533533 2.5844946 2.6123445 2.636974 2.6584487 2.6768372 2.6921937 2.7045681 2.7140036 2.720526 2.7241614 2.725 2.7249506 2.723663 2.7206793 2.7160645 2.709885 2.7022069 2.6930966 2.6826203 2.6708434 2.6578305 2.6436458 2.6283524 2.612012 2.5946853 2.5764318 2.5573092 2.537374 2.516681 2.4952834 2.4732327 2.4505792 2.4273708 2.4036539 2.3794737 2.3548732 2.3298936 2.304575 2.278955 2.2530706 2.2269561 2.200645 2.1741688 2.1475582 2.120841 2.0940454 2.0671966 2.0403192 2.0134366 1.9865704 1.9597415 1.9329692 1.9062719 1.8796669 1.8531703 1.8267971 1.8005617 1.774477 1.7485555 1.7228087 1.697247 1.6718804 1.6467178 1.6217678 1.5970378 1.5725349 1.5482656 1.5242355 1.50045 1.4769138 1.453631 1.4306055 1.4078404 1.3853385 1.3631023 1.3411341 1.3194351 1.298007 1.2768508 1.2559671 1.2353566 1.2150191 1.1949549 1.1751634 1.1556442 1.1363965 1.1174196 1.0987122 1.080273 1.0621009 1.044194 1.0265507 1.0091691 0.99204755 0.9751838 0.9585757 0.9422212 0.9261179 0.9102634 0.8946554 0.8792913 0.8641686 0.84928465 0.8346369 0.8202227 0.8060392 0.79208386 0.7783538 0.7648463 0.7515586 0.7384879 0.72563136 0.7129862 0.70054954 0.68831867 0.6762907 0.66446286 0.6528324 0.64139646 0.63015234 0.6190972 0.6082283 0.597543 0.5870385 0.57671213 0.5665612 0.5565831 0.54677516 0.53713477 0.5276594 0.5183464 0.50919336 0.50019765 0.49135688 0.48266855 0.4741302 0.46573952 0.45749408 0.4493915 0.4414296 0.43360594 0.42591834 0.41836455 0.4109424 0.40364972 0.39648435 0.38944417 0.3825271 0.37573114 0.3690542 0.3624943 0.35604948 0.3497178 0.34349734 0.33738625 0.33138266 0.32548472 0.31969067 0.3139987 0.3084071 0.30291414 0.29751813 0.2922174 0.2870103 0.28189525 0.27687064 0.27193493 0.26708654 0.262324 0.25764582 0.2530505 0.24853665 0.24410282 0.23974763 0.23546968 0.23126768 0.22714025 0.22308612 0.21910399 0.21519262 0.21135075 0.20757717 0.20387068 0.2002301 0.19665429 0.19314209 0.18969238 0.18630408 0.18297608 0.17970735 0.17649682 0.17334348 0.1702463 0.1672043 0.16421653 0.16128199 0.15839976 0.15556891 0.15278853 0.15005775 0.14737564 0.14474139 0.14215411 0.139613 0.13711722 0.13466598 0.13225849 0.12989396 0.12757163 0.12529075 0.1230506 0.12085044 0.11868956 0.11656726 0.114482865 0.1124357 0.110425085 0.10845039 0.10651097 0.10460618 0.10273543 0.1008981 0.09909359 0.09732133 0.095580734 0.09387124 0.0921923 0.09054336 0.08892389 0.08733336 0.08577126 0.084237084 0.08273032 0.0812505 0.079797134 0.078369744 0.07696787 0.075591065 0.07423887 0.07291085 0.07160658 0.07032562 0.06906757 0.067832015 0.06661855 0.06542678 0.06425633 0.063106805 0.06197784 0.060869064 0.059780113 0.05871064 0.057660293 0.05662873 0.055615615 0.054620624 0.053643424 0.052683704 0.05174115 0.050815456

</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="2.725" PeakHeight="259.764" Num="5" zHalfNm="237.183" Error="1.011">
-53.977 3.973 -2.569 1.257 -0.448
</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="6512.667" A="-1.42344143E11" B="4.3933376E7" C="-3389.796" Error="0.00162"/>
<QuasiParabolic ID="2" StartDistance="6512.667" EndDistance="6545.333" A="0.0" B="-106.930824" C="0.056446433" Error="0.00274"/>
<QuasiParabolic ID="3" StartDistance="6545.333" EndDistance="6576.0" A="4.3534131E10" B="-1.3381671E7" C="1028.33" Error="0.00274"/>
<QuasiParabolic ID="4" StartDistance="6576.0" EndDistance="6577.0" A="3.99302132E11" B="-1.21583616E8" C="9255.363" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6577.0" EndDistance="6581.0" A="6.4079376E12" B="-1.94874957E9" C="148161.1" Error="0.0148"/>
<QuasiParabolic ID="6" StartDistance="6581.0" EndDistance="6589.0" A="4.4885171E12" B="-1.36542784E9" C="103842.47" Error="0.012"/>
<QuasiParabolic ID="7" StartDistance="6589.0" EndDistance="6610.0" A="1.03778217E13" B="-3.15304499E9" C="239494.1" Error="0.0177"/>
<QuasiParabolic ID="8" StartDistance="6610.0" EndDistance="6624.0" A="-1.41410477E13" B="4.26567501E9" C="-321679.9" Error="0.0064"/>
<QuasiParabolic ID="9" StartDistance="6624.0" EndDistance="6629.764" A="-1.51045097E13" B="4.5565752E9" C="-343637.94" Error="5.74E-6"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="98.0" Depth="0.154"/>
<TopsideChapman PeakHeight="259.764" PeakDensity="92129.34" PeakScaleHeight="17.308" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
