<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-02 -122 01:25:00.000"
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: 90% PACIFIC flags: One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.02 (122) 01:25:00</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">
FF202612205020125001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.933" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="13.570" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.175" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.175" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.725" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="242.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="242.500" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.375" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="253.205" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.175" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.175" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="231.356" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="220.159" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.433" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="16.067" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.633" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="10.583" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="16.010" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.090" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="12">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
3.175 3.2 3.225 3.25 3.275 3.3 3.325 3.35 3.375 3.4 3.425 3.45
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
242.500 242.500 242.500 245.000 245.000 246.504 248.302 250.488 253.205 256.672 261.249 267.570
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
93 96 96 96 96 96 0 96 96 96 96 93
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="303">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 140.91667 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 171.83333 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 202.75 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 231.356 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0
</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 0.3529119 0.3519786 0.3509026 0.34953943 0.34789655 0.34598285 0.3438088 0.34138623 0.3386593 0.33571413 0.33243394 0.32884502 0.3249759 0.3207348 0.3162249 0.311316 0.3060709 0.30039963 0.29436976 0.2878726 0.28096467 0.27349284 0.26549044 0.25688842 0.24761072 0.23761433 0.22685163 0.21513027 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 0.2 0.20083019 0.20581132 0.21079245 0.21577358 0.22075471 0.22573584 0.23071699 0.23569812 0.24067925 0.24566038 0.2506415 0.25562266 0.2606038 0.26558492 0.27056605 0.27554718 0.2805283 0.28550944 0.29049057 0.2954717 0.30045283 0.30543396 0.3104151 0.31539622 0.32037735 0.32535848 0.3303396 0.33532074 0.3403019 0.34528303 0.35026416 0.354 0.3682196 0.42986837 0.49937388 0.576971 0.6628186 0.7570629 0.8597287 0.97079223 1.0900882 1.2173095 1.3519298 1.4932716 1.6404084 1.7922201 1.9472575 2.1039844 2.260632 2.415292 2.5659132 2.710527 2.8470795 2.9735956 3.0882769 3.1894486 3.27561 3.3455193 3.3981485 3.4327457 3.448808 3.45 3.4487684 3.4421356 3.4300816 3.4129732 3.3911767 3.3650544 3.3349624 3.3012476 3.264246 3.2242818 3.1816652 3.1366923 3.0896442 3.040787 2.9903712 2.9386318 2.8857887 2.8320465 2.7775953 2.7226117 2.6672575 2.6116824 2.556023 2.5004044 2.44494 2.3897336 2.3348777 2.280456 2.226544 2.1732075 2.1205065 2.068493 2.017212 1.9667033 1.9170008 1.8681331 1.8201241 1.7729938 1.7267576 1.681428 1.6370134 1.5935199 1.5509508 1.5093067 1.468586 1.4287856 1.3899001 1.3519229 1.3148457 1.2786592 1.2433531 1.208916 1.1753354 1.1425987 1.1106923 1.0796021 1.0493137 1.0198123 0.99108297 0.9631103 0.935879 0.90937346 0.8835781 0.8584775 0.83405596 0.8102981 0.78718853 0.764712 0.7428534 0.72159773 0.70093024 0.68083644 0.66130185 0.6423124 0.6238542 0.6059136 0.5884771 0.5715316 0.5550642 0.5390622 0.52351326 0.5084052 0.49372625 0.47946477 0.46560943 0.45214912 0.4390731 0.42637077 0.41403183 0.40204623 0.3904042 0.37909612 0.36811274 0.35744494 0.3470839 0.337021 0.32724783 0.3177562 0.30853823 0.29958612 0.2908923 0.2824495 0.2742506 0.26628858 0.2585567 0.25104845 0.24375738 0.23667732 0.22980219 0.22312614 0.21664347 0.2103486 0.20423615 0.19830088 0.19253768 0.1869416 0.18150783 0.17623168 0.17110862 0.16613422 0.1613042 0.1566144 0.15206072 0.14763927 0.1433462 0.13917783 0.13513052 0.13120079 0.12738521 0.123680495 0.120083414 0.116590865 0.11319981 0.10990731 0.1067105 0.10360662 0.100592956 0.0976669 0.09482591 0.09206752 0.08938932 0.08678899 0.08426427 0.08181297 0.07943294 0.07712214 0.07487852 0.07270016 0.07058515 0.068531655 0.06653788 0.06460209 0.06272261 0.060897797 0.05912606 0.057405863 0.0557357 0.05411412 0.052539706 0.051011097

</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="3.45" PeakHeight="231.356" Num="5" zHalfNm="220.159" Error="0.097">
-28.67 0.109 -0.069 0.039 -0.015
</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="6510.917" A="-1.58830494E11" B="4.902176E7" C="-3782.4177" Error="0.00166"/>
<QuasiParabolic ID="2" StartDistance="6510.917" EndDistance="6541.833" A="0.0" B="-1224.7434" C="0.2281329" Error="0.0229"/>
<QuasiParabolic ID="3" StartDistance="6541.833" EndDistance="6543.0" A="1.54530669E13" B="-4.7238497E9" C="361008.6" Error="0.0"/>
<QuasiParabolic ID="4" StartDistance="6543.0" EndDistance="6550.0" A="-9.2928265E11" B="2.83746016E8" C="-21659.602" Error="0.148"/>
<QuasiParabolic ID="5" StartDistance="6550.0" EndDistance="6573.0" A="2.74004181E11" B="-8.3669808E7" C="6387.4087" Error="0.118"/>
<QuasiParabolic ID="6" StartDistance="6573.0" EndDistance="6577.0" A="2.83794725E13" B="-8.6354627E9" C="656911.75" Error="0.124"/>
<QuasiParabolic ID="7" StartDistance="6577.0" EndDistance="6594.0" A="4.021989E13" B="-1.22360166E10" C="930634.8" Error="0.0742"/>
<QuasiParabolic ID="8" StartDistance="6594.0" EndDistance="6601.356" A="-1.09711844E14" B="3.32391854E10" C="-2517591.0" Error="0.00824"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="92.75" Depth="0.154"/>
<TopsideChapman PeakHeight="231.356" PeakDensity="147673.7" PeakScaleHeight="10.583" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
