<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-20 -110 07:40:00.000"
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" >
2026.04.20 (110) 07:40:00</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="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202611004200740001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.475" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.696" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="9.148" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.125" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.125" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="2.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="241.647" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="241.647" 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="2.350" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="267.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.125" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.125" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="241.460" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="224.768" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.754" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="23.777" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.424" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="12.693" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="23.640" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.210" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="15">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.125 2.15 2.175 2.2 2.225 2.25 2.275 2.3 2.325 2.35 2.375 2.4 2.425 2.45 2.475
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
241.647 243.487 245.510 247.747 250.232 252.500 255.000 260.000 262.500 267.500 275.000 280.000 287.500 297.500 309.200
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 66 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" >
-1.5625 -1.5625 -1.5625 -1.5625 1.5625 -1.5625 -1.5625 -10.9375 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="332">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 140.71767 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 171.43533 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 202.153 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 241.46 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0
</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 0.35197875 0.35082853 0.34946606 0.34782398 0.3459112 0.34366697 0.34124678 0.3384536 0.3354452 0.33210537 0.32852536 0.32454032 0.32031396 0.31570232 0.3107025 0.30537817 0.29964104 0.29355943 0.28693536 0.27984637 0.27224383 0.26409522 0.2553635 0.245929 0.23574747 0.22468112 0.21277441 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 0.2028309 0.2078443 0.21285771 0.2178711 0.2228845 0.22789791 0.2329113 0.23792471 0.24293812 0.24795152 0.2529649 0.25797832 0.26299173 0.26800513 0.2730185 0.27803192 0.28304532 0.28805873 0.29307213 0.29808554 0.30309895 0.30811232 0.31312573 0.31813914 0.32315254 0.32816595 0.33317935 0.33819273 0.34320614 0.34821954 0.35323295 0.354 0.38428453 0.42298138 0.4645315 0.5086608 0.55516696 0.603942 0.654961 0.7082269 0.7638025 0.82174236 0.8821351 0.9450126 1.0104392 1.0783976 1.1488501 1.2216572 1.2966347 1.3734651 1.4517572 1.531011 1.6106082 1.6898775 1.768107 1.8445714 1.9185652 1.9894271 2.0565994 2.1195996 2.1780267 2.2315884 2.2800732 2.3233142 2.3612173 2.3937116 2.4207616 2.4423623 2.4585059 2.469191 2.4744234 2.475 2.4745665 2.4715328 2.46573 2.45731 2.446426 2.4332292 2.4178712 2.4004998 2.3812604 2.360295 2.3377416 2.3137336 2.2883995 2.2618632 2.2342434 2.2056534 2.1762013 2.1459897 2.1151161 2.0836723 2.0517452 2.0194163 1.9867629 1.9538562 1.9207639 1.8875481 1.8542675 1.8209758 1.7877232 1.754556 1.7215165 1.688644 1.6559744 1.6235402 1.591371 1.5594943 1.527934 1.4967121 1.4658482 1.43536 1.4052626 1.3755697 1.3462932 1.317443 1.2890279 1.261055 1.2335304 1.2064586 1.1798432 1.1536868 1.127991 1.1027565 1.0779831 1.0536703 1.0298163 1.0064191 0.98347604 0.9609841 0.9389395 0.9173384 0.8961762 0.87544847 0.85515 0.8352756 0.81581974 0.7967769 0.7781411 0.75990635 0.74206656 0.7246155 0.70754695 0.69085443 0.6745316 0.65857196 0.6429691 0.6277165 0.6128077 0.5982362 0.5839957 0.57007974 0.5564819 0.54319596 0.5302156 0.5175347 0.505147 0.4930465 0.48122722 0.46968326 0.45840874 0.44739795 0.43664518 0.42614487 0.4158915 0.40587965 0.39610404 0.3865594 0.37724063 0.36814263 0.3592605 0.35058933 0.34212437 0.33386093 0.3257944 0.31792033 0.31023425 0.30273184 0.2954089 0.28826126 0.28128484 0.2744757 0.2678299 0.26134363 0.25501317 0.24883486 0.24280515 0.23692054 0.23117758 0.22557296 0.2201034 0.2147657 0.20955673 0.20447345 0.19951287 0.19467208 0.1899482 0.18533847 0.18084015 0.1764506 0.17216718 0.1679874 0.16390875 0.15992883 0.15604524 0.15225568 0.14855792 0.14494972 0.14142893 0.13799347 0.13464127 0.13137034 0.1281787 0.12506446 0.122025736 0.11906072 0.11616763 0.11334473 0.11059032 0.10790274 0.1052804 0.1027217 0.100225106 0.09778912 0.095412284 0.09309315 0.090830326 0.08862246 0.086468205 0.08436627 0.082315385 0.08031432 0.07836187 0.07645684 0.0745981 0.072784506 0.071014985 0.069288455 0.06760388 0.065960236 0.064356536 0.06279181 0.061265107 0.059775505 0.05832211 0.05690404 0.055520434 0.05417046 0.052853294 0.05156815 0.050314244

</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="2.475" PeakHeight="241.46" Num="5" zHalfNm="224.768" Error="1.358">
-39.704 0.855 -0.817 0.505 -0.146
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="8" 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="6510.718" A="-1.60890487E11" B="4.9657556E7" C="-3831.476" Error="0.00155"/>
<QuasiParabolic ID="2" StartDistance="6510.718" EndDistance="6541.435" A="0.0" B="-970.40735" C="0.18907166" Error="0.0181"/>
<QuasiParabolic ID="3" StartDistance="6541.435" EndDistance="6571.0" A="5.4730658E10" B="-1.6810632E7" C="1290.8687" Error="0.0183"/>
<QuasiParabolic ID="4" StartDistance="6571.0" EndDistance="6575.0" A="9.4170346E12" B="-2.86639334E9" C="218121.1" Error="0.0277"/>
<QuasiParabolic ID="5" StartDistance="6575.0" EndDistance="6579.0" A="4.5481565E12" B="-1.38536576E9" C="105495.414" Error="0.012"/>
<QuasiParabolic ID="6" StartDistance="6579.0" EndDistance="6599.0" A="1.17664121E13" B="-3.57969792E9" C="272263.3" Error="0.0282"/>
<QuasiParabolic ID="7" StartDistance="6599.0" EndDistance="6611.46" A="-2.37721637E13" B="7.1911997E9" C="-543837.44" Error="0.0101"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="92.153" Depth="0.154"/>
<TopsideChapman PeakHeight="241.46" PeakDensity="76000.31" PeakScaleHeight="12.693" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
