<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-01 -121 22:05:00.000"
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" >
2026.05.01 (121) 22:05:00</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">
FF202612105012205001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.425" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.893" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="17.226" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.925" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="230.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="230.000" 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="0.025" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="4.425" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="267.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.368" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="231.548" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="217.906" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.304" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="19.715" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.097" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="10.604" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="19.970" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.920" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="40">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
3.45 3.475 3.5 3.525 3.55 3.575 3.6 3.625 3.65 3.675 3.7 3.725 3.75 3.775 3.8 3.825 3.85 3.875 3.9 3.925 3.95 3.975 4.0 4.025 4.05 4.075 4.1 4.125 4.15 4.175 4.2 4.225 4.25 4.275 4.3 4.325 4.35 4.375 4.4 4.425
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
230.000 230.000 232.500 232.500 232.500 232.500 233.417 234.333 235.250 236.167 237.083 238.000 238.917 239.833 240.750 241.667 242.583 243.500 244.417 245.333 246.250 247.167 248.083 249.000 249.917 250.833 251.750 252.667 253.583 254.500 255.417 256.333 257.250 258.167 259.083 260.000 262.500 265.000 266.250 267.500
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
87 75 72 0 0 72 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 72 0 69 0 45
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
3.125 3.125 3.125 -3.125 3.125 -3.125 3.125 -3.125 -3.125 3.125 -3.125 3.125 -3.125 3.125 3.125 -9.375 -3.125 3.125 -9.375 -3.125 -3.125 3.125 -3.125 3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 3.125 -3.125 -3.125 3.125 3.125 3.125 3.125 3.125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="309">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.209 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 231.548 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.2205796 0.24323162 0.2627343 0.2796543 0.2944343 0.30738372 0.31873447 0.32866335 0.33729586 0.3447339 0.35105312 0.3563149 0.36056414 0.36383548 0.36615464 0.36753955 0.368 0.36787695 0.36734414 0.36656788 0.36538857 0.36389458 0.36209399 0.3599966 0.35745758 0.35465133 0.351442 0.3478556 0.34384876 0.3395291 0.33472598 0.32949615 0.323837 0.31769958 0.31106174 0.30387634 0.29614142 0.2877384 0.27861327 0.2687866 0.2580723 0.24641815 0.23368035 0.21976747 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 0.206 0.212 0.218 0.224 0.23 0.236 0.242 0.248 0.254 0.26 0.266 0.272 0.278 0.284 0.29 0.296 0.302 0.308 0.314 0.32 0.326 0.332 0.338 0.344 0.35 0.356 0.362 0.368 0.4296805 0.48945543 0.5513387 0.61728776 0.6886358 0.7664863 0.85170233 0.9449387 1.0465485 1.1565069 1.2744821 1.3997846 1.5314823 1.6685067 1.8098308 1.954444 2.1014462 2.250072 2.399678 2.549655 2.699457 2.8485885 2.996473 3.142604 3.2863297 3.4269261 3.5635948 3.695324 3.820982 3.939286 4.048708 4.1475925 4.234147 4.306509 4.3629193 4.4018373 4.4220805 4.425 4.424222 4.417131 4.4030232 4.382366 4.3556266 4.323269 4.285748 4.2435093 4.1969843 4.146589 4.0927234 4.0357685 3.976087 3.9140224 3.8498986 3.784019 3.7166686 3.6481123 3.5785973 3.5083518 3.4375868 3.3664966 3.2952592 3.2240374 3.1529796 3.0822203 3.0118814 2.9420724 2.8728914 2.804426 2.7367542 2.6699443 2.6040568 2.5391436 2.4752495 2.4124131 2.3506663 2.290036 2.230543 2.1722043 2.115032 2.0590348 2.0042179 1.9505824 1.8981277 1.8468499 1.7967432 1.7477994 1.7000086 1.6533593 1.6078387 1.5634325 1.5201255 1.4779013 1.4367431 1.3966331 1.3575531 1.3194844 1.2824078 1.2463039 1.2111531 1.1769358 1.1436322 1.1112221 1.079686 1.0490042 1.0191567 0.99012434 0.9618876 0.93442744 0.90772486 0.8817613 0.85651827 0.8319777 0.8081218 0.7849329 0.76239395 0.740488 0.71919847 0.69850904 0.678404 0.65886754 0.6398846 0.62144023 0.6035198 0.58610916 0.5691944 0.55276185 0.5367983 0.5212909 0.50622696 0.49159417 0.47738057 0.4635745 0.4501645 0.43713954 0.42448878 0.4122017 0.40026802 0.38867784 0.37742138 0.3664892 0.3558721 0.34556118 0.33554766 0.32582313 0.3163793 0.3072082 0.29830205 0.28965324 0.2812544 0.2730984 0.2651783 0.25748727 0.25001875 0.24276638 0.23572391 0.22888534 0.22224477 0.21579652 0.20953503 0.20345494 0.19755101 0.19181816 0.18625145 0.18084608 0.1755974 0.17050087 0.16555212 0.16074686 0.15608093 0.15155032 0.14715113 0.14287952 0.13873182 0.13470444 0.1307939 0.12699682 0.123309895 0.11972996 0.11625389 0.1128787 0.10960145 0.10641932 0.103329524 0.100329414 0.09741637 0.094587885 0.0918415 0.08917482 0.08658555 0.08407145 0.08163032 0.07926006 0.07695861 0.07472397 0.0725542 0.07044743 0.06840181 0.06641559 0.06448704 0.06261447 0.060796276 0.05903087 0.05731672 0.055652343 0.054036286 0.052467156 0.050943583

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.368" PeakHeight="110.0" Num="3" Error="0.0">
-19.272 2.645 -0.164
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.368" EndFrequency="4.425" PeakHeight="231.548" Num="5" zHalfNm="217.906" Error="0.666">
-36.878 -1.381 0.968 -0.577 0.32
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="12" EarthRadius="6370.0">
<QuasiParabolic ID="0" StartDistance="6460.016" EndDistance="6480.001" A="-5.9424761E11" B="1.8340976E8" C="-14151.853" Error="0.00229"/>
<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6508.0" A="-2.16466031E11" B="6.6810504E7" C="-5154.996" Error="0.00181"/>
<QuasiParabolic ID="2" StartDistance="6508.0" EndDistance="6536.0" A="0.0" B="-1.0370849" C="0.040158674" Error="1.71E-5"/>
<QuasiParabolic ID="3" StartDistance="6536.0" EndDistance="6537.0" A="-4.6499952E12" B="1.42261312E9" C="-108808.016" Error="1.09E-9"/>
<QuasiParabolic ID="4" StartDistance="6537.0" EndDistance="6547.0" A="2.30557565E11" B="-7.0595752E7" C="5404.0713" Error="0.0381"/>
<QuasiParabolic ID="5" StartDistance="6547.0" EndDistance="6562.0" A="-1.4190635E10" B="4170763.0" C="-305.91183" Error="0.0155"/>
<QuasiParabolic ID="6" StartDistance="6562.0" EndDistance="6565.0" A="1.0585294E13" B="-3.22639437E9" C="245851.14" Error="0.0269"/>
<QuasiParabolic ID="7" StartDistance="6565.0" EndDistance="6569.0" A="1.5685489E13" B="-4.7801477E9" C="364187.28" Error="0.025"/>
<QuasiParabolic ID="8" StartDistance="6569.0" EndDistance="6572.0" A="2.12229895E13" B="-6.4660972E9" C="492513.47" Error="0.00522"/>
<QuasiParabolic ID="9" StartDistance="6572.0" EndDistance="6588.0" A="4.5549525E13" B="-1.3869182E10" C="1055742.6" Error="0.00915"/>
<QuasiParabolic ID="10" StartDistance="6588.0" EndDistance="6596.0" A="-8.6527385E12" B="2.58566477E9" C="-193107.27" Error="0.00775"/>
<QuasiParabolic ID="11" StartDistance="6596.0" EndDistance="6601.548" A="-1.48994362E14" B="4.5139218E10" C="-3418816.2" Error="0.00248"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="84.0" Depth="0.168"/>
<TopsideChapman PeakHeight="231.548" PeakDensity="242935.8" PeakScaleHeight="10.604" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
