<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-15 -105 07:35:00.000"
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) 07:35:00</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">
FF202610504150735001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.775" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.793" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="10.524" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.375" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.375" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.075" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.675" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="263.224" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.375" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.375" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="232.929" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="217.415" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.776" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="22.163" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.491" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="11.819" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="21.880" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.280" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="17">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 2.75 2.775
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
232.500 235.000 237.500 237.500 240.000 241.899 243.996 246.322 248.919 251.835 255.133 258.894 263.224 268.260 274.192 281.281 289.904
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
81 81 69 72 69 69 0 0 72 75 72 69 66 69 69 69 69
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="315">
<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 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 195.75 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 232.929 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0
</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 0.36355862 0.40496296 0.4510448 0.5011331 0.55466974 0.61126554 0.670719 0.73301005 0.7981776 0.86636317 0.93768656 1.0123162 1.0903696 1.1719329 1.25702 1.3455241 1.4372002 1.5316317 1.6282196 1.7261761 1.8245194 1.9221404 2.0179205 2.110684 2.1994202 2.2832243 2.3614 2.433371 2.4987714 2.557367 2.6090124 2.6536398 2.6912537 2.7218611 2.745502 2.762217 2.7720368 2.775 2.7749903 2.7728171 2.7669864 2.7577093 2.7451978 2.729663 2.7113144 2.6903589 2.6669977 2.6414273 2.6138387 2.5844152 2.5533338 2.5207632 2.4868655 2.4517934 2.4156933 2.378702 2.340949 2.302557 2.2636392 2.2243028 2.184647 2.1447647 2.104741 2.0646558 2.0245817 1.9845859 1.9447304 1.9050715 1.8656603 1.8265436 1.7877634 1.7493577 1.7113607 1.6738026 1.6367105 1.6001081 1.5640163 1.5284531 1.4934338 1.4589719 1.4250779 1.391761 1.359028 1.3268844 1.295334 1.2643791 1.2340207 1.2042587 1.1750919 1.1465178 1.1185335 1.091135 1.0643178 1.0380764 1.012405 0.9872974 0.96274656 0.9387453 0.9152861 0.8923611 0.8699621 0.8480808 0.82670873 0.80583715 0.7854573 0.7655604 0.74613744 0.7271794 0.7086774 0.6906224 0.6730054 0.65581757 0.6390499 0.6226936 0.60673994 0.5911802 0.5760058 0.5612083 0.5467792 0.5327103 0.5189935 0.5056206 0.49258378 0.4798752 0.46748728 0.4554124 0.44364318 0.43217242 0.4209929 0.41009772 0.39947996 0.38913292 0.37905002 0.3692248 0.35965097 0.35032234 0.34123284 0.3323766 0.32374778 0.3153408 0.30715004 0.29917017 0.29139584 0.28382194 0.2764434 0.26925528 0.2622528 0.25543126 0.24878609 0.24231277 0.23600696 0.22986439 0.2238809 0.21805243 0.21237503 0.20684482 0.20145804 0.19621101 0.19110015 0.18612197 0.18127304 0.17655005 0.17194976 0.16746901 0.16310471 0.15885386 0.15471354 0.15068088 0.14675313 0.14292754 0.13920149 0.1355724 0.13203777 0.12859514 0.12524213 0.12197642 0.118795745 0.1156979 0.11268073 0.109742165 0.106880136 0.10409267 0.10137783 0.09873372 0.09615853 0.09365043 0.0912077 0.08882864 0.08651158 0.08425493 0.082057096 0.07991657 0.077831835 0.075801454 0.07382402 0.07189813 0.07002247 0.068195716 0.0664166 0.06468388 0.06299634 0.061352815 0.05975215 0.058193237 0.056674976 0.05519632 0.05375623 0.052353702 0.050987754

</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="2.775" PeakHeight="232.929" Num="5" zHalfNm="217.415" Error="1.05">
-37.825 1.203 -0.962 0.606 -0.201
</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="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="30.001219" C="0.035410672" Error="5.04E-4"/>
<QuasiParabolic ID="3" StartDistance="6537.167" EndDistance="6538.0" A="1.13329171E13" B="-3.4669312E9" C="265148.28" Error="0.0805"/>
<QuasiParabolic ID="4" StartDistance="6538.0" EndDistance="6560.0" A="-3.5793011E10" B="1.0802034E7" C="-814.8011" Error="0.0778"/>
<QuasiParabolic ID="5" StartDistance="6560.0" EndDistance="6565.0" A="5.5926096E11" B="-1.70616864E8" C="13012.859" Error="0.00847"/>
<QuasiParabolic ID="6" StartDistance="6565.0" EndDistance="6574.0" A="1.04459047E13" B="-3.18254182E9" C="242405.45" Error="0.0556"/>
<QuasiParabolic ID="7" StartDistance="6574.0" EndDistance="6591.0" A="1.7736122E13" B="-5.4004357E9" C="411092.25" Error="0.0254"/>
<QuasiParabolic ID="8" StartDistance="6591.0" EndDistance="6602.929" A="-3.37724268E13" B="1.02295286E10" C="-774612.9" Error="0.00958"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="85.75" Depth="0.154"/>
<TopsideChapman PeakHeight="232.929" PeakDensity="95541.25" PeakScaleHeight="11.819" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
