<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-01 -121 22:30:00.000"
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: 45% PACIFIC flags: Multiple candidates for F2x cusp, F2 cusps do not match, Unidentified traces above foF2</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.01 (121) 22:30:00</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">
FF202612105012230001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.625" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.913" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="14.186" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.775" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="225.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="225.000" 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="3.625" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="266.131" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="226.457" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="212.462" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.847" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="20.093" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.743" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="10.583" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="20.030" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.100" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="26">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 3.55 3.575 3.6 3.625
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
225.000 227.500 228.333 229.167 230.000 230.833 231.667 232.500 233.750 235.000 236.250 237.500 240.000 242.500 242.500 244.000 245.500 247.000 248.500 250.000 250.000 255.000 257.500 260.000 262.500 266.131
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 0 0 0 0 72 0 0 0 0 0 0 0 69 72 84 0 0 60 81
</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 7.8125 7.8125 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="300">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 136.83333 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 163.66667 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 190.5 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 226.457 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0
</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 0.353812 0.35332385 0.35253775 0.3513833 0.34986797 0.34800196 0.34587008 0.3433416 0.34043694 0.33717975 0.3335292 0.3294542 0.3250611 0.3201454 0.31483623 0.30908883 0.30277678 0.29597685 0.28861925 0.2806141 0.2719544 0.2625736 0.25233817 0.24117032 0.22898808 0.2156547 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 0.20191304 0.20765217 0.2133913 0.21913044 0.22486956 0.2306087 0.23634782 0.24208696 0.24782608 0.25356522 0.25930434 0.26504347 0.27078262 0.27652174 0.28226086 0.288 0.29373914 0.29947826 0.3052174 0.3109565 0.31669566 0.32243478 0.3281739 0.33391306 0.33965218 0.3453913 0.35113043 0.354 0.379093 0.43160573 0.48786142 0.5484994 0.6140445 0.6849354 0.76154816 0.8441385 0.93288624 1.027839 1.1289339 1.2359391 1.3485461 1.4662662 1.5885217 1.7146052 1.8437412 1.9751014 2.107751 2.2407324 2.3730633 2.5037282 2.6317394 2.7560487 2.8756196 2.9894857 3.096659 3.1961582 3.2871144 3.3686779 3.4400644 3.5005772 3.5496354 3.586738 3.6114995 3.62367 3.625 3.624078 3.6177056 3.605598 3.5881407 3.5657187 3.5387132 3.5074995 3.4724426 3.4338975 3.3922052 3.347694 3.300676 3.251449 3.2002933 3.1474743 3.09324 3.0378234 2.9814413 2.9242947 2.8665705 2.8084404 2.7500632 2.6915832 2.6331334 2.5748343 2.5167954 2.4591155 2.4018836 2.3451793 2.2890737 2.2336295 2.1789021 2.1249402 2.071786 2.0194752 1.9680388 1.9175025 1.8678875 1.8192105 1.7714847 1.7247199 1.6789223 1.6340957 1.590241 1.547357 1.5054402 1.4644854 1.4244858 1.3854328 1.3473169 1.3101269 1.2738513 1.2384771 1.2039908 1.1703786 1.1376253 1.1057162 1.0746356 1.0443678 1.0148966 0.9862061 0.9582798 0.9311014 0.9046545 0.8789229 0.85389024 0.8295404 0.8058573 0.78282505 0.7604279 0.7386504 0.7174771 0.696893 0.67688316 0.6574329 0.638528 0.62015414 0.6022976 0.5849448 0.5680823 0.55169713 0.5357765 0.520308 0.50527936 0.49067864 0.47649416 0.46271458 0.44932875 0.43632585 0.42369527 0.4114267 0.39951003 0.3879355 0.37669352 0.36577478 0.3551702 0.34487092 0.33486837 0.32515413 0.31572008 0.30655822 0.2976609 0.2890205 0.2806298 0.27248165 0.2645691 0.25688547 0.24942416 0.24217884 0.2351433 0.22831154 0.22167769 0.21523608 0.20898119 0.20290764 0.19701019 0.19128379 0.18572351 0.18032455 0.17508227 0.16999212 0.16504973 0.16025081 0.15559125 0.15106697 0.1466741 0.14240882 0.13826743 0.13424636 0.13034211 0.1265513 0.12287064 0.119296946 0.11582711 0.11245813 0.10918707 0.10601109 0.10292744 0.09993343 0.09702647 0.09420402 0.09146364 0.08880294 0.0862196 0.08371139 0.08127612 0.07891166 0.07661597 0.07438704 0.07222294 0.07012178 0.06808173 0.066101015 0.064177915 0.062310748 0.060497895 0.058737773 0.05702885 0.055369638 0.053758692 0.05219461 0.050676025

</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="3.625" PeakHeight="226.457" Num="5" zHalfNm="212.462" Error="0.419">
-36.103 0.187 -0.11 0.025 0.044
</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="6506.833" A="-2.10612257E11" B="6.5003784E7" C="-5015.5986" Error="0.00148"/>
<QuasiParabolic ID="2" StartDistance="6506.833" EndDistance="6533.667" A="0.0" B="614.4127" C="-0.054406576" Error="0.00922"/>
<QuasiParabolic ID="3" StartDistance="6533.667" EndDistance="6535.0" A="-2.86376618E12" B="8.7636294E8" C="-67045.586" Error="0.0167"/>
<QuasiParabolic ID="4" StartDistance="6535.0" EndDistance="6559.0" A="9.7395163E10" B="-2.9883832E7" C="2292.3496" Error="0.0393"/>
<QuasiParabolic ID="5" StartDistance="6559.0" EndDistance="6561.0" A="9.7755909E12" B="-2.98100301E9" C="227259.5" Error="0.0368"/>
<QuasiParabolic ID="6" StartDistance="6561.0" EndDistance="6567.0" A="1.40156212E13" B="-4.27349837E9" C="325757.84" Error="0.0377"/>
<QuasiParabolic ID="7" StartDistance="6567.0" EndDistance="6587.0" A="3.08960947E13" B="-9.4144983E9" C="717184.7" Error="0.0393"/>
<QuasiParabolic ID="8" StartDistance="6587.0" EndDistance="6596.457" A="-7.7114687E13" B="2.33806377E10" C="-1772198.8" Error="0.0106"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="80.5" Depth="0.154"/>
<TopsideChapman PeakHeight="226.457" PeakDensity="163035.05" PeakScaleHeight="10.583" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
