<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-31 -090 04:45:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 70% PACIFIC flags: F2 cusps do not match</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.03.31 (090) 04:45:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.18" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.97" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="82.25368" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202609003310445001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.640" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="12.924" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.175" 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="0.025" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.475" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="291.230" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="260.456" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="244.894" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.917" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="22.336" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.796" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="11.753" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="22.240" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.130" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="17">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
3.15 3.175 3.2 3.225 3.25 3.275 3.3 3.325 3.35 3.375 3.4 3.425 3.45 3.475 3.5 3.525 3.55
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
270.000 271.250 272.500 273.750 275.000 275.000 275.000 276.332 277.868 279.657 281.769 284.299 287.384 291.230 296.160 302.703 311.811
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
90 0 0 0 90 93 90 66 66 105 99 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 -1.5625 -1.5625 -1.5625 -1.5625 -1.5625 -7.8125 -1.5625 -1.5625 -1.5625 -1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="351">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 146.92934 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 183.85867 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 220.788 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 260.456 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0
</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 0.35362422 0.35321164 0.35257575 0.35179353 0.35086703 0.34972522 0.34837273 0.34688756 0.34520206 0.34332323 0.34125876 0.33901712 0.3365395 0.33390605 0.33106187 0.3279581 0.3246779 0.32117745 0.31742024 0.31343552 0.30914292 0.3046397 0.29986244 0.29484007 0.28942198 0.2837021 0.2776942 0.2712829 0.2644957 0.25728402 0.24959208 0.24140745 0.2327135 0.22341698 0.21340074 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 0.2 0.2 0.2 0.2 0.2 0.2 0.20058937 0.20475951 0.20892963 0.21309976 0.21726988 0.22144002 0.22561014 0.22978027 0.23395039 0.23812051 0.24229065 0.24646077 0.2506309 0.25480103 0.25897115 0.26314127 0.2673114 0.27148154 0.27565166 0.27982178 0.2839919 0.28816205 0.29233217 0.2965023 0.3006724 0.30484253 0.30901268 0.3131828 0.31735292 0.32152304 0.3256932 0.3298633 0.33403343 0.33820355 0.3423737 0.34654382 0.35071394 0.354 0.36252204 0.4056023 0.4534021 0.50586176 0.5628906 0.62442315 0.6904022 0.7608166 0.83563626 0.9148687 0.99852335 1.0865885 1.1790003 1.2756695 1.3764832 1.4812025 1.5895574 1.7011664 1.8155336 1.9321158 2.050243 2.1691964 2.288112 2.406183 2.5224566 2.6360672 2.746125 2.8517613 2.9521458 3.046564 3.1343212 3.2148235 3.28755 3.3520253 3.407887 3.4548128 3.492553 3.5209188 3.5397637 3.5489953 3.55 3.5492644 3.544182 3.5344994 3.5204914 3.502434 3.480601 3.4552634 3.4266865 3.3951297 3.3608446 3.3240743 3.2850533 3.2440064 3.2011478 3.1566823 3.1108038 3.0636954 3.0155308 2.9664724 2.916673 2.8662753 2.815413 2.7642095 2.7127802 2.6612313 2.6096613 2.5581603 2.5068111 2.45569 2.4048657 2.354401 2.3043535 2.2547736 2.2057076 2.157197 2.1092777 2.0619826 2.0153396 1.9693735 1.9241052 1.8795528 1.8357315 1.7926536 1.7503287 1.7087646 1.6679667 1.6279385 1.5886818 1.5501969 1.5124823 1.4755355 1.4393529 1.4039294 1.3692592 1.3353357 1.3021513 1.269698 1.237967 1.2069489 1.176634 1.1470121 1.1180727 1.0898051 1.0621983 1.0352408 1.0089213 0.9832284 0.9581504 0.93367565 0.9097925 0.8864892 0.8637541 0.84157556 0.819942 0.79884195 0.778264 0.7581968 0.7386292 0.71955013 0.70094866 0.682814 0.66513556 0.64790285 0.6311055 0.6147334 0.59877664 0.5832253 0.5680698 0.5533007 0.53890866 0.5248847 0.5112198 0.4979052 0.4849324 0.472293 0.45997876 0.44798166 0.4362938 0.42490757 0.41381535 0.40300986 0.39248386 0.38223034 0.37224245 0.36251345 0.35303682 0.34380615 0.33481517 0.32605782 0.3175281 0.30922025 0.3011286 0.29324755 0.28557175 0.27809593 0.27081496 0.26372382 0.2568176 0.25009158 0.24354106 0.23716153 0.23094858 0.2248979 0.21900529 0.21326664 0.20767798 0.2022354 0.19693513 0.19177346 0.18674679 0.18185163 0.17708452 0.17244217 0.1679213 0.16351877 0.1592315 0.15505646 0.15099074 0.1470315 0.14317594 0.13942137 0.13576515 0.1322047 0.12873754 0.12536122 0.122073375 0.11887168 0.11575389 0.112717815 0.10976131 0.106882304 0.10407877 0.10134872 0.098690234 0.096101455 0.09358054 0.09112572 0.08873527 0.0864075 0.08414076 0.08193347 0.07978405 0.077691 0.07565285 0.073668145 0.071735494 0.06985353 0.06802092 0.06623638 0.06449864 0.06280649 0.061158717 0.059554167 0.057991706 0.05647023 0.054988664 0.053545963 0.052141104 0.0507731

</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="3.55" PeakHeight="260.456" Num="5" zHalfNm="244.894" Error="0.224">
-39.981 0.548 -0.351 0.194 -0.078
</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="6516.929" A="-1.11508169E11" B="3.44161E7" C="-2655.438" Error="0.00187"/>
<QuasiParabolic ID="2" StartDistance="6516.929" EndDistance="6553.859" A="0.0" B="-4247.373" C="0.69178873" Error="0.0929"/>
<QuasiParabolic ID="3" StartDistance="6553.859" EndDistance="6590.0" A="7.841262E10" B="-2.3957818E7" C="1830.0304" Error="0.0929"/>
<QuasiParabolic ID="4" StartDistance="6590.0" EndDistance="6591.0" A="1.23386095E13" B="-3.74480666E9" C="284140.25" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6591.0" EndDistance="6604.0" A="1.49175423E13" B="-4.5273687E9" C="343506.22" Error="0.105"/>
<QuasiParabolic ID="6" StartDistance="6604.0" EndDistance="6619.0" A="3.06522882E13" B="-9.292585E9" C="704288.8" Error="0.0509"/>
<QuasiParabolic ID="7" StartDistance="6619.0" EndDistance="6630.456" A="-5.8759108E13" B="1.77240023E10" C="-1336547.1" Error="0.0134"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="110.788" Depth="0.154"/>
<TopsideChapman PeakHeight="260.456" PeakDensity="156358.56" PeakScaleHeight="11.753" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
