<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-03 -093 08:35:00.000"
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="20.0">
<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" >
2026.04.03 (093) 08:35:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.19" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.97" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202609304030835001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.740" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="8.229" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="2.700" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="270.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="270.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.125" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="270.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.378" 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="255.721" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="232.935" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.863" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="31.908" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.447" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="16.698" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="33.970" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.760" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="7">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.05 2.075 2.1 2.125 2.15 2.175 2.2
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
327.500 308.333 289.167 270.000 293.750 317.500 320.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 0 0 51 0 75 78
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
3.125 -9.375 -3.125 9.375 -3.125 -3.125 3.125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="396">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.03 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 140.75267 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 171.50534 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 202.258 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 255.721 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.22641101 0.24975446 0.26982415 0.2872251 0.30241704 0.3157262 0.32739303 0.33759224 0.34646103 0.3541013 0.3605938 0.36599818 0.3703619 0.3737222 0.37610444 0.37752703 0.378 0.37786964 0.3774788 0.37674218 0.37574974 0.3744196 0.37292922 0.37102935 0.36889982 0.36638448 0.36366287 0.3605862 0.3571753 0.3533764 0.34929484 0.3448845 0.34003854 0.33487597 0.32924515 0.32321835 0.3167506 0.30976722 0.3022904 0.29424903 0.28555122 0.27623585 0.266148 0.2552633 0.24347126 0.23060818 0.21658939 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 0.20286319 0.2086513 0.21443942 0.22022754 0.22601566 0.23180377 0.23759188 0.24338 0.24916811 0.25495625 0.26074433 0.26653245 0.27232057 0.2781087 0.2838968 0.28968492 0.29547304 0.30126116 0.30704927 0.3128374 0.3186255 0.32441363 0.33020175 0.33598986 0.34177798 0.3475661 0.35335422 0.3591423 0.36493042 0.37071854 0.37650666 0.378 0.3987295 0.42586428 0.45291853 0.48042992 0.5087479 0.5381382 0.56880236 0.60088575 0.63449746 0.669696 0.7064848 0.7448106 0.78456765 0.8256034 0.86771446 0.9107104 0.95435494 0.99844176 1.0427926 1.0872278 1.1316209 1.1758568 1.2198552 1.2635486 1.3068947 1.349856 1.3924111 1.4345429 1.4762286 1.5174775 1.5582606 1.5985848 1.6384124 1.6777362 1.7165219 1.7547436 1.7923555 1.8292909 1.8654929 1.9008648 1.935299 1.9686613 2.000805 2.0315402 2.0606382 2.0878487 2.112885 2.1354241 2.1551232 2.1716342 2.1846225 2.1937876 2.1989033 2.2 2.1999402 2.1987598 2.1961129 2.1920586 2.1866562 2.1799657 2.1720464 2.1629577 2.1527581 2.141506 2.1292584 2.1160715 2.1020005 2.0870996 2.0714214 2.055017 2.0379367 2.0202284 2.0019393 1.983115 1.9637988 1.9440331 1.9238585 1.9033141 1.8824372 1.8612636 1.8398278 1.8181624 1.7962989 1.7742668 1.7520947 1.7298095 1.7074367 1.6850005 1.662524 1.6400288 1.6175354 1.595063 1.5726299 1.550253 1.5279485 1.5057313 1.4836154 1.461614 1.4397391 1.4180022 1.3964139 1.3749839 1.3537211 1.3326339 1.3117298 1.291016 1.2704985 1.2501835 1.230076 1.2101806 1.1905017 1.171043 1.1518078 1.132799 1.1140189 1.09547 1.0771536 1.0590713 1.0412244 1.0236135 1.0062393 0.98910195 0.9722015 0.955538 0.9391108 0.92291945 0.90696317 0.891241 0.8757519 0.8604946 0.84546775 0.83066976 0.8160991 0.80175406 0.78763276 0.7737333 0.76005375 0.746592 0.73334587 0.7203133 0.70749193 0.69487953 0.6824737 0.6702722 0.65827245 0.6464721 0.6348687 0.62345976 0.61224276 0.60121524 0.5903746 0.5797184 0.56924415 0.5589492 0.5488311 0.53888726 0.52911526 0.51951253 0.51007664 0.500805 0.4916952 0.48274478 0.4739513 0.46531236 0.4568255 0.44848838 0.44029862 0.4322539 0.42435187 0.41659024 0.40896675 0.40147913 0.3941252 0.38690272 0.37980953 0.37284347 0.36600247 0.35928437 0.35268715 0.34620875 0.33984718 0.3336004 0.32746652 0.32144353 0.3155296 0.3097228 0.30402133 0.29842332 0.292927 0.28753057 0.2822323 0.2770305 0.27192342 0.26690948 0.26198697 0.2571543 0.25240988 0.24775214 0.24317956 0.23869061 0.23428382 0.22995771 0.22571085 0.2215418 0.2174492 0.21343167 0.20948786 0.20561643 0.20181608 0.19808556 0.19442357 0.19082892 0.18730034 0.18383668 0.18043675 0.17709938 0.17382345 0.17060784 0.16745144 0.16435322 0.16131207 0.15832698 0.15539692 0.1525209 0.14969791 0.146927 0.14420721 0.14153762 0.13891728 0.13634533 0.13382086 0.131343 0.12891091 0.12652375 0.124180675 0.1218809 0.11962361 0.117408045 0.11523343 0.11309901 0.11100405 0.10894782 0.10692962 0.10494874 0.10300449 0.101096205 0.09922322 0.097384885 0.095580555 0.09380962 0.092071444 0.09036544 0.088691 0.08704756 0.08543453 0.08385137 0.082297504 0.08077241 0.07927555 0.077806406 0.07636446 0.07494921 0.07356017 0.072196856 0.070858784 0.06954549 0.06825653 0.06699143 0.06574977 0.06453111 0.063335024 0.062161088 0.0610089 0.059878062 0.058768168 0.05767884 0.05660969 0.055560354 0.054530457 0.05351964 0.052527554 0.051553853 0.05059819

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.378" PeakHeight="110.0" Num="3" Error="0.0">
-19.584 2.796 -0.182
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.378" EndFrequency="2.2" PeakHeight="255.721" Num="5" zHalfNm="232.935" Error="2.07">
-51.246 -3.868 2.578 -1.445 0.518
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="8" EarthRadius="6370.0">
<QuasiParabolic ID="0" StartDistance="6460.021" EndDistance="6480.001" A="-6.2724571E11" B="1.93594352E8" C="-14937.693" Error="0.00256"/>
<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6510.753" A="-1.93656881E11" B="5.977064E7" C="-4611.7896" Error="0.00205"/>
<QuasiParabolic ID="2" StartDistance="6510.753" EndDistance="6541.505" A="0.0" B="1987.7617" C="-0.2653157" Error="0.0362"/>
<QuasiParabolic ID="3" StartDistance="6541.505" EndDistance="6570.0" A="2.96304353E10" B="-9180206.0" C="710.976" Error="0.0362"/>
<QuasiParabolic ID="4" StartDistance="6570.0" EndDistance="6574.0" A="3.76842328E12" B="-1.14732109E9" C="87327.48" Error="0.0392"/>
<QuasiParabolic ID="5" StartDistance="6574.0" EndDistance="6605.0" A="3.69390728E12" B="-1.12465114E9" C="85603.27" Error="0.0363"/>
<QuasiParabolic ID="6" StartDistance="6605.0" EndDistance="6619.0" A="-1.7697563E12" B="5.29751104E8" C="-39635.355" Error="0.00509"/>
<QuasiParabolic ID="7" StartDistance="6619.0" EndDistance="6625.721" A="-1.63104728E13" B="4.9233802E9" C="-371530.6" Error="0.00165"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="92.258" Depth="0.178"/>
<TopsideChapman PeakHeight="255.721" PeakDensity="60049.63" PeakScaleHeight="16.698" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
