<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-01 -121 01:20:00.000"
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" >
2026.05.01 (121) 01:20:00</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="75.82641" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202612105010120001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.525" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.979" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="14.028" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="217.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="217.500" 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="3.450" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="248.355" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="218.712" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="205.988" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.467" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="18.274" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.683" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="10.583" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="18.310" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.050" 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" >
2.95 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
217.500 220.000 220.000 220.000 222.500 222.500 222.500 225.000 227.500 227.500 230.000 230.000 232.500 235.000 235.000 235.000 236.721 238.778 241.280 244.389 248.355 253.592 260.825 271.466
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 75 75 99 99 87 87 102 96 99 96 102 102 96 102 102 99 99 99 102 99 84 84 75
</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="291">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 135.08333 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 160.16667 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 185.25 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 218.712 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0
</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 0.35231337 0.35101187 0.34927908 0.3471288 0.34465033 0.34171918 0.33843222 0.33468077 0.33043912 0.32582152 0.32063016 0.31500506 0.30879995 0.30202654 0.29470333 0.28661102 0.27785686 0.26831484 0.25787413 0.24648583 0.23391104 0.2201678 0.20492378 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 0.20511627 0.21125582 0.21739535 0.22353488 0.22967441 0.23581396 0.24195349 0.24809302 0.25423256 0.2603721 0.26651162 0.27265117 0.2787907 0.28493023 0.29106978 0.2972093 0.30334884 0.3094884 0.3156279 0.32176745 0.32790697 0.3340465 0.34018606 0.34632558 0.35246512 0.354 0.39112386 0.44446614 0.50269383 0.56630033 0.6357013 0.7112447 0.79322815 0.88182646 0.97708976 1.0789696 1.187301 1.3017497 1.421841 1.5470306 1.6765994 1.8097521 1.9455357 2.0830061 2.2210314 2.3584998 2.4941666 2.6267643 2.7549975 2.8775663 2.993092 3.1002755 3.1978502 3.2845695 3.3593373 3.4211473 3.469131 3.502617 3.5211174 3.525 3.5247464 3.5200315 3.5096445 3.4939597 3.4733517 3.448193 3.4188497 3.3856797 3.3490307 3.3092382 3.2666245 3.221497 3.1741493 3.124858 3.0738847 3.0214753 2.9678602 2.9132535 2.8578553 2.8018503 2.7454093 2.6886897 2.6318357 2.5749793 2.5182407 2.4617288 2.4055424 2.3497705 2.2944927 2.2397802 2.1856961 2.132296 2.079629 2.027737 1.9766572 1.9264203 1.8770529 1.8285763 1.7810082 1.7343621 1.6886483 1.6438738 1.6000428 1.5571569 1.5152155 1.4742156 1.4341527 1.3950204 1.3568108 1.319515 1.2831224 1.2476219 1.2130013 1.1792475 1.146347 1.1142857 1.0830489 1.0526217 1.0229888 0.9941346 0.9660435 0.93869954 0.9120869 0.88618976 0.86099213 0.8364782 0.81263226 0.7894386 0.76688176 0.7449465 0.7236175 0.70287985 0.6827189 0.66312 0.6440689 0.6255516 0.6075542 0.5900633 0.57306546 0.55654776 0.5404974 0.524902 0.50974923 0.4950272 0.48072425 0.4668289 0.4533301 0.44021693 0.42747876 0.41510525 0.40308627 0.39141202 0.38007283 0.36905938 0.35836256 0.34797344 0.33788338 0.32808396 0.31856698 0.30932444 0.30034855 0.29163176 0.2831667 0.27494624 0.26696336 0.2592113 0.25168347 0.24437346 0.23727502 0.2303821 0.22368883 0.21718943 0.21087839 0.20475024 0.19879974 0.1930218 0.18741141 0.18196379 0.17667419 0.17153808 0.16655105 0.16170876 0.15700704 0.15244183 0.1480092 0.14370528 0.13952635 0.13546883 0.13152917 0.12770398 0.12398992 0.120383784 0.116882436 0.113482855 0.11018207 0.10697723 0.10386555 0.100844316 0.09791092 0.0950628 0.09229749 0.08961257 0.08700573 0.08447468 0.08201724 0.07963126 0.07731466 0.075065434 0.07288162 0.070761316 0.06870268 0.06670392 0.0647633 0.06287912 0.061049744 0.059273582 0.05754908 0.055874746 0.054249115 0.05267077 0.05113834

</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="3.525" PeakHeight="218.712" Num="5" zHalfNm="205.988" Error="0.48">
-33.036 -0.452 0.02 -0.023 0.029
</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="6505.083" A="-2.40913678E11" B="7.4356072E7" C="-5737.226" Error="0.00142"/>
<QuasiParabolic ID="2" StartDistance="6505.083" EndDistance="6530.167" A="0.0" B="-689.86426" C="0.14606296" Error="0.0105"/>
<QuasiParabolic ID="3" StartDistance="6530.167" EndDistance="6555.0" A="8.0021496E10" B="-2.46063E7" C="1891.5957" Error="0.0105"/>
<QuasiParabolic ID="4" StartDistance="6555.0" EndDistance="6556.0" A="4.4885529E13" B="-1.36952412E10" C="1044655.56" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6556.0" EndDistance="6557.0" A="-1.1847876E13" B="3.61208141E9" C="-275305.03" Error="0.0"/>
<QuasiParabolic ID="6" StartDistance="6557.0" EndDistance="6563.0" A="1.72209398E13" B="-5.2544174E9" C="400804.38" Error="0.0142"/>
<QuasiParabolic ID="7" StartDistance="6563.0" EndDistance="6575.0" A="3.8661685E13" B="-1.17882419E10" C="898581.7" Error="0.0166"/>
<QuasiParabolic ID="8" StartDistance="6575.0" EndDistance="6582.0" A="2.74404134E12" B="-8.6272282E8" C="67743.7" Error="0.0112"/>
<QuasiParabolic ID="9" StartDistance="6582.0" EndDistance="6588.712" A="-9.3431175E13" B="2.83609846E10" C="-2152228.0" Error="0.00378"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="75.25" Depth="0.154"/>
<TopsideChapman PeakHeight="218.712" PeakDensity="154164.08" PeakScaleHeight="10.583" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
