<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-20 -140 06:20:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 50% PACIFIC flags: F2o cusp not found, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.20 (140) 06:20:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.22" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.99" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="75.82641" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202614005200620001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.975" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.831" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.396" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.525" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.525" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.325" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="237.926" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="237.926" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.850" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="255.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.525" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.525" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="233.593" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="219.641" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.599" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="19.959" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.507" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="10.583" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="19.940" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.160" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="19">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.525 2.55 2.575 2.6 2.625 2.65 2.675 2.7 2.725 2.75 2.775 2.8 2.825 2.85 2.875 2.9 2.925 2.95 2.975
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
237.926 238.514 239.160 239.874 240.669 241.556 242.556 243.688 244.984 246.479 248.225 250.290 252.770 255.000 260.000 265.000 270.000 280.000 294.061
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -1.5625 -4.6875 -1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="300">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 139.84933 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 169.69867 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 199.548 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 233.593 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0
</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 0.35283697 0.35190412 0.3506803 0.349172 0.3474603 0.34540826 0.34310076 0.3404805 0.33756524 0.3343075 0.33079895 0.32693502 0.32275137 0.3181662 0.3132907 0.30795252 0.30228606 0.2961429 0.2895237 0.28248593 0.2748737 0.26664785 0.2578287 0.24828471 0.23795821 0.22680056 0.21468273 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 0.20155466 0.2067139 0.21187314 0.21703239 0.22219163 0.22735088 0.23251012 0.23766936 0.24282861 0.24798785 0.2531471 0.25830632 0.26346558 0.2686248 0.27378407 0.27894333 0.28410256 0.28926182 0.29442105 0.2995803 0.30473953 0.3098988 0.31505802 0.32021728 0.3253765 0.33053577 0.335695 0.34085426 0.3460135 0.35117275 0.354 0.37436658 0.4240987 0.47971088 0.5404026 0.6055434 0.6747622 0.74785554 0.82479423 0.90565336 0.9905131 1.0794631 1.1725538 1.2697636 1.3709288 1.4757969 1.5838861 1.694541 1.806925 1.9199433 2.0324423 2.143071 2.2505655 2.353611 2.4510822 2.54193 2.6253774 2.700705 2.767454 2.8252435 2.8738158 2.9129949 2.9426768 2.9627938 2.973308 2.975 2.9745739 2.9700084 2.9606934 2.9469447 2.9290788 2.9074092 2.8822443 2.8538852 2.8226242 2.788743 2.7525122 2.7141905 2.674023 2.6322422 2.5890675 2.5447044 2.499346 2.4531715 2.406348 2.3590302 2.3113608 2.2634716 2.2154825 2.167504 2.1196363 2.0719705 2.0245886 1.9775649 1.9309658 1.8848504 1.8392713 1.7942747 1.7499012 1.7061859 1.6631594 1.6208471 1.579271 1.5384487 1.4983946 1.4591199 1.4206328 1.382939 1.3460418 1.3099422 1.2746396 1.2401311 1.206413 1.1734794 1.1413239 1.1099384 1.0793142 1.0494417 1.0203105 0.99190956 0.96422744 0.9372521 0.91097116 0.8853719 0.86044145 0.8361667 0.8125343 0.7895309 0.7671432 0.74535763 0.7241609 0.70353967 0.68348056 0.6639704 0.6449962 0.626545 0.60860395 0.5911606 0.57420236 0.5577171 0.54169273 0.5261175 0.51097965 0.4962679 0.48197106 0.46807808 0.45457828 0.44146118 0.42871648 0.4163341 0.40430424 0.3926173 0.38126388 0.37023485 0.35952127 0.34911442 0.33900583 0.32918715 0.31965032 0.3103875 0.30139095 0.29265323 0.28416708 0.27592537 0.26792124 0.2601479 0.25259885 0.24526775 0.23814836 0.23123468 0.22452083 0.21800113 0.21167001 0.20552209 0.19955212 0.193755 0.18812579 0.18265964 0.1773519 0.172198 0.1671935 0.16233413 0.15761568 0.1530341 0.14858545 0.14426589 0.1400717 0.13599925 0.13204502 0.1282056 0.12447767 0.120858006 0.11734347 0.11393102 0.110617705 0.107400656 0.104277074 0.10124426 0.09829958 0.09544048 0.09266447 0.08996916 0.08735219 0.08481129 0.082344264 0.079948954 0.077623285 0.075365245 0.07317285 0.071044214 0.06897747 0.066970825 0.065022536 0.06313091 0.061294295 0.05951109 0.057779755 0.056098774 0.054466683 0.052882068 0.051343538

</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="2.975" PeakHeight="233.593" Num="5" zHalfNm="219.641" Error="0.657">
-34.542 0.753 -0.479 0.364 -0.141
</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="6509.849" A="-1.70344645E11" B="5.2575512E7" C="-4056.627" Error="0.00159"/>
<QuasiParabolic ID="2" StartDistance="6509.849" EndDistance="6539.699" A="0.0" B="-960.854" C="0.18762642" Error="0.0175"/>
<QuasiParabolic ID="3" StartDistance="6539.699" EndDistance="6541.0" A="6.0277769E12" B="-1.84321485E9" C="140907.75" Error="0.0"/>
<QuasiParabolic ID="4" StartDistance="6541.0" EndDistance="6566.0" A="-2.3636695E10" B="7087462.5" C="-531.04785" Error="0.0785"/>
<QuasiParabolic ID="5" StartDistance="6566.0" EndDistance="6569.0" A="1.12095121E12" B="-3.41553376E8" C="26017.904" Error="0.00521"/>
<QuasiParabolic ID="6" StartDistance="6569.0" EndDistance="6582.0" A="1.59540073E13" B="-4.8576307E9" C="369759.53" Error="0.0655"/>
<QuasiParabolic ID="7" StartDistance="6582.0" EndDistance="6593.0" A="2.78108234E13" B="-8.4604314E9" C="643445.4" Error="0.0401"/>
<QuasiParabolic ID="8" StartDistance="6593.0" EndDistance="6603.593" A="-4.9240408E13" B="1.49132175E10" C="-1129165.6" Error="0.012"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="89.548" Depth="0.154"/>
<TopsideChapman PeakHeight="233.593" PeakDensity="109809.24" PeakScaleHeight="10.583" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
