<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-17 -107 08:05:00.000"
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) 08:05:00</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">
FF202610704170805001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.375" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.727" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="8.852" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.025" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.025" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="2.750" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="237.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="237.500" 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="0.075" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.250" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="263.295" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.025" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.025" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="238.023" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="220.801" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.713" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="24.539" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.404" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="13.214" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="23.530" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.530" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="15">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
237.500 237.500 240.000 242.165 244.597 247.350 250.492 254.111 258.326 263.295 269.242 276.487 285.507 297.044 312.325
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 75 0 63 78 0 0 0 66 0 51 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="334">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 139.75 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 169.5 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 199.25 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 238.023 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0
</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 0.35347393 0.352762 0.35182965 0.3506064 0.3491724 0.34738788 0.34533682 0.34299496 0.34037665 0.33746356 0.3342082 0.33063674 0.3267138 0.32253745 0.31796023 0.31297803 0.30765462 0.30189866 0.29567927 0.28909197 0.28191414 0.2741947 0.26597098 0.25704813 0.24743798 0.23701459 0.22570056 0.21345264 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 0.20258823 0.2077647 0.21294117 0.21811765 0.22329412 0.2284706 0.23364706 0.23882353 0.244 0.24917647 0.25435293 0.2595294 0.2647059 0.26988235 0.27505884 0.2802353 0.28541178 0.29058823 0.2957647 0.30094117 0.30611765 0.3112941 0.3164706 0.32164705 0.32682353 0.332 0.33717647 0.34235293 0.3475294 0.3527059 0.354 0.37877834 0.41533786 0.4554814 0.49868345 0.54450625 0.5926735 0.6430476 0.69563824 0.7505271 0.80786055 0.86778563 0.93050194 0.9961519 1.064846 1.1366351 1.2114346 1.2889867 1.3688601 1.4503971 1.5326768 1.614665 1.6952279 1.7732706 1.8478073 1.9180825 1.9835497 2.0438538 2.0988595 2.1485121 2.1928725 2.2320626 2.2662134 2.2954686 2.3199725 2.3398554 2.3552248 2.366165 2.3727443 2.3749912 2.375 2.3737516 2.3699718 2.3637881 2.3553305 2.3447287 2.3321118 2.3176079 2.301342 2.2834382 2.2640164 2.2431936 2.2210834 2.1977952 2.1734345 2.1481028 2.121897 2.0949097 2.0672295 2.03894 2.0101206 1.9808472 1.9511906 1.9212177 1.8909913 1.8605709 1.8300114 1.7993646 1.7686784 1.7379979 1.7073643 1.6768162 1.6463891 1.6161156 1.5860257 1.5561471 1.5265046 1.4971215 1.4680179 1.4392132 1.4107237 1.3825648 1.3547497 1.3272902 1.3001968 1.2734784 1.2471428 1.2211965 1.1956451 1.1704929 1.1457434 1.1213992 1.0974619 1.073933 1.0508125 1.0281003 1.0057952 0.9838963 0.9624014 0.94130826 0.92061406 0.9003158 0.8804101 0.8608931 0.8417608 0.8230091 0.8046334 0.7866292 0.76899165 0.7517158 0.7347965 0.71822876 0.7020072 0.6861265 0.6705812 0.655366 0.6404754 0.62590384 0.6116459 0.59769595 0.58404857 0.5706983 0.55763966 0.54486716 0.5323755 0.52015924 0.5082131 0.49653178 0.4851101 0.47394288 0.46302503 0.4523515 0.44191733 0.4317176 0.4217475 0.41200224 0.4024771 0.39316747 0.38406882 0.37517667 0.36648658 0.35799423 0.34969535 0.34158581 0.33366147 0.3259183 0.3183523 0.31095967 0.30373654 0.29667917 0.28978392 0.28304717 0.27646542 0.2700352 0.26375312 0.2576159 0.25162023 0.24576296 0.24004099 0.23445125 0.22899075 0.22365658 0.21844585 0.21335578 0.20838362 0.20352669 0.19878237 0.19414806 0.1896213 0.18519957 0.18088052 0.17666174 0.17254099 0.16851598 0.16458453 0.16074447 0.15699373 0.15333022 0.14975195 0.14625692 0.14284326 0.13950907 0.13625251 0.13307178 0.12996513 0.12693086 0.123967275 0.121072754 0.11824569 0.11548452 0.11278772 0.110153794 0.10758128 0.10506875 0.10261482 0.10021813 0.097877346 0.095591165 0.09335832 0.091177575 0.089047715 0.08696756 0.08493594 0.08295175 0.081013866 0.07912122 0.07727274 0.07546743 0.07370426 0.07198225 0.07030045 0.06865792 0.06705374 0.06548703 0.0639569 0.0624625 0.061003003 0.05957759 0.058185473 0.05682587 0.055498023 0.05420119 0.05293465 0.051697694 0.050489634

</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="2.375" PeakHeight="238.023" Num="5" zHalfNm="220.801" Error="1.54">
-40.132 2.597 -1.887 0.921 -0.272
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="7" 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="6509.75" A="-1.71482022E11" B="5.2926548E7" C="-4083.7134" Error="0.00152"/>
<QuasiParabolic ID="2" StartDistance="6509.75" EndDistance="6539.5" A="0.0" B="1984.5237" C="-0.26483113" Error="0.0341"/>
<QuasiParabolic ID="3" StartDistance="6539.5" EndDistance="6568.0" A="2.44296192E10" B="-7579055.5" C="587.75244" Error="0.0341"/>
<QuasiParabolic ID="4" StartDistance="6568.0" EndDistance="6580.0" A="7.7423108E12" B="-2.3577257E9" C="179496.6" Error="0.0346"/>
<QuasiParabolic ID="5" StartDistance="6580.0" EndDistance="6593.0" A="1.4436549E13" B="-4.3924485E9" C="334110.78" Error="0.0226"/>
<QuasiParabolic ID="6" StartDistance="6593.0" EndDistance="6608.023" A="-1.89831745E13" B="5.745493E9" C="-434730.5" Error="0.00908"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="89.25" Depth="0.154"/>
<TopsideChapman PeakHeight="238.023" PeakDensity="69982.94" PeakScaleHeight="13.214" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
