<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-18 -138 01:00:00.000"
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" >
2026.05.18 (138) 01:00:00</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">
FF202613805180100001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.100" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.913" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="12.132" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.675" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.675" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.400" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="229.377" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="229.377" 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="0.025" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="243.476" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.675" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.675" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="225.083" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="212.542" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.595" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="17.943" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.530" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="10.583" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="17.990" 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="18">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 3.0 3.025 3.05 3.075 3.1
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
229.377 230.021 230.732 231.522 232.405 233.397 234.521 235.804 237.283 239.006 241.039 243.476 247.500 250.000 255.000 260.000 270.000 283.038
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 0 0 0 0 78 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 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="293">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 137.85466 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 165.70934 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 193.564 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 225.083 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0
</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 0.35339895 0.35261247 0.35153195 0.35016313 0.34844008 0.34644687 0.3441229 0.34141353 0.33840987 0.33506453 0.33133838 0.327202 0.32269898 0.3178162 0.31255242 0.30675444 0.30052537 0.29380077 0.2865184 0.278703 0.27021015 0.2609882 0.2510419 0.2402254 0.22840133 0.21550424 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 0.201607 0.2071357 0.2126644 0.2181931 0.22372179 0.22925049 0.2347792 0.24030788 0.24583659 0.25136527 0.25689396 0.26242268 0.26795137 0.27348006 0.27900875 0.28453746 0.29006615 0.29559484 0.30112356 0.30665225 0.31218094 0.31770962 0.32323834 0.32876703 0.33429572 0.3398244 0.34535313 0.35088181 0.354 0.37669966 0.430928 0.48886186 0.5511959 0.61853683 0.69134957 0.7700563 0.85493696 0.9461975 1.0438541 1.1477658 1.2575969 1.3728313 1.492718 1.6163249 1.742583 1.8702551 1.9980408 2.12452 2.2483602 2.368148 2.4825222 2.590234 2.690109 2.7810235 2.8620136 2.9322155 2.9908745 3.037398 3.0712972 3.0922198 3.0999541 3.1 3.0977683 3.090446 3.0783422 3.061787 3.0411084 3.0166311 2.9886727 2.9575424 2.9235394 2.8869517 2.8480546 2.8071108 2.7643688 2.7200642 2.6744177 2.6276376 2.579917 2.5314367 2.4823637 2.4328532 2.3830476 2.3330781 2.2830646 2.2331166 2.1833336 2.1338058 2.0846145 2.0358324 1.9875252 1.9397508 1.8925605 1.8459995 1.8001071 1.7549174 1.7104596 1.6667582 1.6238337 1.5817027 1.5403786 1.4998714 1.4601882 1.4213337 1.38331 1.3461174 1.3097539 1.2742162 1.2394991 1.2055961 1.1724998 1.1402013 1.1086912 1.077959 1.0479933 1.0187826 0.99031454 0.9625764 0.93555516 0.90923744 0.88360965 0.858658 0.8343687 0.8107277 0.7877211 0.76533484 0.74355507 0.7223678 0.70175934 0.68171597 0.6622241 0.64327043 0.6248417 0.60692483 0.589507 0.57257557 0.55611813 0.5401224 0.5245764 0.50946844 0.49478692 0.48052055 0.46665826 0.45318925 0.44010288 0.42738885 0.415037 0.40303746 0.39138058 0.38005695 0.36905736 0.3583728 0.34799463 0.33791423 0.3281233 0.31861377 0.30937776 0.30040753 0.29169562 0.28323478 0.27501783 0.26703793 0.25928834 0.2517625 0.24445407 0.23735686 0.23046482 0.22377211 0.21727301 0.21096203 0.20483373 0.19888291 0.19310445 0.18749341 0.182045 0.1767545 0.1716174 0.16662928 0.16178584 0.15708292 0.15251644 0.1480825 0.14377724 0.13959694 0.13553803 0.13159695 0.12777035 0.124054864 0.1204473 0.11694454 0.11354353 0.11024134 0.1070351 0.10392203 0.10089943 0.097964674 0.09511522 0.09234859 0.08966238 0.08705427 0.08452197 0.082063295 0.07967611 0.07735833 0.07510794 0.072923 0.070801586 0.068741865 0.06674204 0.06480038 0.06291519 0.061084826 0.059307694 0.057582255 0.055907 0.05428047 0.052701257 0.051167976

</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="3.1" PeakHeight="225.083" Num="5" zHalfNm="212.542" Error="0.648">
-31.446 0.037 -0.248 0.118 0.02
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="7" 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="6507.855" A="-1.95502801E11" B="6.0340372E7" C="-4655.7676" Error="0.00154"/>
<QuasiParabolic ID="2" StartDistance="6507.855" EndDistance="6535.709" A="0.0" B="1171.7074" C="-0.14002605" Error="0.0187"/>
<QuasiParabolic ID="3" StartDistance="6535.709" EndDistance="6563.0" A="5.6116208E10" B="-1.7275044E7" C="1329.4973" Error="0.0346"/>
<QuasiParabolic ID="4" StartDistance="6563.0" EndDistance="6574.0" A="1.82244417E13" B="-5.5538668E9" C="423132.94" Error="0.0765"/>
<QuasiParabolic ID="5" StartDistance="6574.0" EndDistance="6586.0" A="3.44261845E13" B="-1.0482903E10" C="798021.56" Error="0.051"/>
<QuasiParabolic ID="6" StartDistance="6586.0" EndDistance="6595.083" A="-6.826382E13" B="2.07014277E10" C="-1569449.6" Error="0.0126"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="83.564" Depth="0.154"/>
<TopsideChapman PeakHeight="225.083" PeakDensity="119230.766" PeakScaleHeight="10.583" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
