<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-15 -105 04:45:00.000"
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" >
2026.04.15 (105) 04:45:00</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">
FF202610504150445001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.575" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.722" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="9.584" 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="232.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="232.500" 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="2.475" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="270.000" 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="238.758" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="220.280" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.387" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="26.313" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.500" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="13.984" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="26.070" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.210" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="24">
<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 2.575
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
232.500 234.000 235.500 237.000 238.500 240.000 240.833 241.667 242.500 246.250 250.000 250.000 252.500 255.000 257.500 260.000 262.500 265.000 267.500 270.000 275.000 279.593 284.721 290.484
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 0 0 0 0 84 0 0 72 0 72 60 0 0 0 0 0 81 81 72 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 -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="349">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 138.58333 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 167.16667 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 195.75 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 238.758 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0
</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 0.3533988 0.35268724 0.35168076 0.35038465 0.34873247 0.34680796 0.3446216 0.34204412 0.33923516 0.3360058 0.33251932 0.32860458 0.3243659 0.31978112 0.314722 0.3093164 0.3034716 0.29713094 0.29034886 0.28298154 0.27503994 0.26650268 0.25724816 0.24721296 0.23637795 0.22454801 0.21165071 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 0.2044898 0.20987755 0.2152653 0.22065306 0.22604081 0.23142858 0.23681633 0.24220408 0.24759184 0.2529796 0.25836736 0.2637551 0.26914287 0.27453062 0.27991837 0.28530613 0.29069388 0.29608163 0.3014694 0.30685714 0.3122449 0.31763265 0.3230204 0.32840815 0.3337959 0.3391837 0.34457144 0.3499592 0.354 0.36271814 0.39886317 0.43703258 0.4772483 0.51957244 0.5640456 0.61074775 0.6597222 0.7110483 0.7647604 0.8209091 0.87949836 0.9405029 1.0039015 1.0695996 1.1374663 1.2073183 1.2789413 1.3520344 1.4262865 1.5013062 1.5766857 1.6519674 1.7266991 1.8004154 1.8726546 1.9429576 2.01093 2.0761797 2.1383574 2.197155 2.2523074 2.3035848 2.3507977 2.3937662 2.4323823 2.4665134 2.496085 2.5210302 2.5412886 2.5568254 2.567611 2.5736258 2.575 2.574925 2.5730534 2.5687544 2.5621462 2.5533476 2.5424771 2.5296528 2.514992 2.4986095 2.4806187 2.4611304 2.4402523 2.4180894 2.3947432 2.3703122 2.3448904 2.3185692 2.2914352 2.2635727 2.2350605 2.2059748 2.1763875 2.1463675 2.115979 2.0852835 2.0543387 2.0231988 1.9919152 1.9605355 1.9291047 1.8976647 1.8662546 1.8349105 1.8036665 1.7725536 1.7416008 1.7108346 1.6802797 1.6499586 1.6198916 1.5900977 1.5605935 1.5313946 1.5025148 1.4739666 1.4457607 1.4179071 1.3904144 1.3632897 1.3365396 1.3101696 1.2841839 1.2585864 1.2333798 1.2085663 1.1841472 1.1601233 1.136495 1.1132618 1.0904229 1.067977 1.0459223 1.0242568 1.0029781 0.9820834 0.96156955 0.94143325 0.921671 0.9022789 0.88325304 0.8645892 0.8462832 0.8283305 0.8107266 0.79346675 0.7765463 0.75996035 0.743704 0.7277725 0.7121606 0.6968635 0.68187606 0.66719335 0.6528103 0.63872176 0.6249229 0.6114086 0.59817386 0.5852138 0.5725234 0.5600979 0.5479323 0.53602195 0.52436197 0.5129477 0.50177443 0.49083763 0.4801327 0.46965516 0.45940056 0.44936457 0.43954286 0.42993113 0.42052525 0.41132107 0.40231457 0.3935017 0.38487852 0.3764412 0.36818597 0.360109 0.3522067 0.34447542 0.3369116 0.3295118 0.32227254 0.31519052 0.30826244 0.30148503 0.29485512 0.28836963 0.2820255 0.2758197 0.2697493 0.26381144 0.2580033 0.2523221 0.24676512 0.2413297 0.23601325 0.2308132 0.22572705 0.22075236 0.21588673 0.21112777 0.20647322 0.2019208 0.19746833 0.1931136 0.18885452 0.184689 0.18061501 0.17663057 0.17273374 0.1689226 0.16519529 0.16154997 0.15798485 0.15449822 0.15108831 0.14775349 0.1444921 0.14130253 0.13818322 0.13513263 0.13214923 0.1292316 0.12637825 0.1235878 0.120858856 0.11819008 0.11558014 0.11302775 0.11053165 0.1080906 0.10570339 0.10336884 0.10108579 0.09885311 0.09666969 0.09453444 0.09244632 0.09040427 0.08840729 0.08645439 0.08454459 0.08267695 0.08085053 0.07906443 0.07731776 0.075609654 0.07393926 0.07230575 0.0707083 0.06914613 0.06761845 0.066124514 0.06466356 0.06323487 0.061837737 0.060471456 0.05913535 0.057828758 0.056551024 0.05530151 0.054079596 0.05288467 0.05171614 0.050573424

</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="2.575" PeakHeight="238.758" Num="5" zHalfNm="220.28" Error="0.86">
-43.842 1.265 -0.719 0.341 -0.053
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="8" 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="6508.583" A="-1.85709953E11" B="5.7317888E7" C="-4422.5513" Error="0.00149"/>
<QuasiParabolic ID="2" StartDistance="6508.583" EndDistance="6537.167" A="0.0" B="-417.9661" C="0.10423783" Error="0.00752"/>
<QuasiParabolic ID="3" StartDistance="6537.167" EndDistance="6565.0" A="5.9866841E10" B="-1.8403712E7" C="1414.3829" Error="0.00752"/>
<QuasiParabolic ID="4" StartDistance="6565.0" EndDistance="6566.0" A="1.47779496E13" B="-4.5022065E9" C="342907.38" Error="1.43E-9"/>
<QuasiParabolic ID="5" StartDistance="6566.0" EndDistance="6574.0" A="6.2319986E12" B="-1.8991145E9" C="144682.27" Error="0.0205"/>
<QuasiParabolic ID="6" StartDistance="6574.0" EndDistance="6595.0" A="1.05660348E13" B="-3.21765325E9" C="244966.61" Error="0.0391"/>
<QuasiParabolic ID="7" StartDistance="6595.0" EndDistance="6608.758" A="-2.12203974E13" B="6.4219018E9" C="-485856.34" Error="0.0123"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="85.75" Depth="0.154"/>
<TopsideChapman PeakHeight="238.758" PeakDensity="82265.82" PeakScaleHeight="13.984" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
