<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-15 -074 04:05:00.000"
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="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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 65% PACIFIC flags: Multiple candidates for F2x cusp, One of F2 cusps was derived from the other, Unidentified traces above foF2</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.03.15 (074) 04:05:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.17" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.96" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="82.25368" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202607403150405001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.825" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.628" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="13.879" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.025" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.025" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.125" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="252.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="252.500" 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="3.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="292.979" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.025" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.025" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="262.450" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="245.399" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.955" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="24.846" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.012" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="12.594" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="27.290" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.510" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="73">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.025 2.05 2.075 2.1 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 2.5 2.525 2.55 2.575 2.6 2.625 2.65 2.675 2.7 2.725 2.75 2.775 2.8 2.825 2.85 2.875 2.9 2.925 2.95 2.975 3.0 3.025 3.05 3.075 3.1 3.125 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 3.575 3.6 3.625 3.65 3.675 3.7 3.725 3.75 3.775 3.8 3.825
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
252.500 255.000 255.000 257.500 257.500 257.500 257.500 260.000 260.000 260.000 260.000 260.000 260.000 260.000 260.000 262.500 262.500 262.500 262.500 262.500 262.500 262.500 262.500 262.500 262.500 265.000 265.000 265.000 265.000 265.000 266.250 267.500 267.500 267.500 267.500 268.125 268.750 269.375 270.000 270.625 271.250 271.875 272.500 272.500 272.500 273.750 275.000 275.000 275.000 277.500 277.500 277.500 280.000 280.000 280.000 280.000 282.500 282.500 282.782 283.101 283.465 283.883 284.370 284.944 285.630 286.464 287.500 288.822 290.568 292.979 296.526 302.258 313.093
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 54 0 51 0 0 54 54 45 45 45 0 45 0 54 54 57 54 57 60 63 66 66 66 63 66 66 66 66 63 51 51 39 36 54 0 0 0 0 0 81 0 81 78 90 0 81 81 93 93 78 81 90 90 0 60 81 84 72 72 84 87 72 69 69 69 78 78 66 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 1.5625 -1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 -1.5625 1.5625 -1.5625 -1.5625 -1.5625 1.5625 -1.5625 1.5625 1.5625 -1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 -1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 1.5625 -1.5625 1.5625 1.5625 1.5625 -1.5625 4.6875 -1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="369">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 143.25 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 176.5 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 209.75 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 262.45 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0
</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 0.35354906 0.35306174 0.352277 0.35134757 0.35012823 0.34869877 0.34706512 0.34523398 0.343142 0.34080055 0.3382224 0.33542153 0.33234677 0.3290187 0.32545936 0.32156938 0.31744388 0.31299958 0.30822688 0.30312735 0.29771414 0.29194102 0.28570086 0.27913103 0.27213752 0.26456448 0.256557 0.2479685 0.23874018 0.22879031 0.21807829 0.20660281 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 0.20231579 0.20694737 0.21157895 0.21621053 0.22084211 0.22547369 0.23010527 0.23473684 0.23936842 0.244 0.24863158 0.25326315 0.25789472 0.2625263 0.26715788 0.27178946 0.27642104 0.28105262 0.2856842 0.29031578 0.29494736 0.29957893 0.3042105 0.3088421 0.31347367 0.31810525 0.32273683 0.3273684 0.332 0.33663157 0.34126315 0.34589472 0.3505263 0.354 0.36207026 0.39612573 0.4331621 0.47331128 0.5166164 0.56305975 0.61253434 0.66488594 0.71986824 0.7772461 0.83676094 0.89816856 0.96125066 1.0257916 1.091633 1.1586576 1.2267238 1.2957485 1.3656795 1.4364728 1.5080528 1.5804398 1.6535877 1.727491 1.8021438 1.8775502 1.9536967 2.030578 2.108216 2.1865945 2.2657073 2.3455443 2.426091 2.507311 2.5891843 2.6716273 2.7546067 2.8379862 2.921633 3.0054002 3.089041 3.1722317 3.2545946 3.3356087 3.414585 3.4906862 3.5628378 3.6296744 3.6896288 3.7408476 3.7814033 3.809439 3.823487 3.825 3.824294 3.8194883 3.8103404 3.7970912 3.7799828 3.7592552 3.7351465 3.7078917 3.6777203 3.6448562 3.609517 3.5719135 3.532248 3.4907162 3.4475043 3.402791 3.3567462 3.309531 3.2612982 3.212192 3.162349 3.1118965 3.0609548 3.0096364 2.9580457 2.9062808 2.854432 2.802584 2.7508142 2.6991944 2.6477907 2.5966637 2.5458686 2.495456 2.4454718 2.3959575 2.3469503 2.298484 2.2505884 2.2032905 2.156613 2.1105773 2.0652006 2.020498 1.9764829 1.9331656 1.8905547 1.848657 1.8074776 1.76702 1.7272859 1.688276 1.6499898 1.6124256 1.5755804 1.5394506 1.5040318 1.4693184 1.4353046 1.4019837 1.3693485 1.3373915 1.3061043 1.2754787 1.2455056 1.216176 1.1874807 1.1594098 1.1319536 1.1051023 1.0788459 1.0531741 1.0280769 1.0035441 0.9795652 0.9561302 0.9332288 0.9108508 0.8889861 0.8676246 0.8467562 0.8263711 0.80645937 0.7870113 0.7680173 0.7494678 0.7313534 0.7136648 0.69639295 0.6795288 0.66306335 0.646988 0.63129413 0.61597323 0.60101706 0.5864174 0.5721662 0.5582557 0.54467803 0.5314257 0.51849127 0.50586736 0.49354687 0.48152283 0.4697883 0.45833662 0.44716114 0.43625546 0.4256132 0.41522825 0.40509447 0.39520603 0.3855571 0.376142 0.3669552 0.35799125 0.3492449 0.34071097 0.33238435 0.32426012 0.3163334 0.30859953 0.30105385 0.2936918 0.28650907 0.2795013 0.27266422 0.2659938 0.25948602 0.2531369 0.24694265 0.24089952 0.23500384 0.22925207 0.2236407 0.21816635 0.21282569 0.20761546 0.20253253 0.19757378 0.19273621 0.18801688 0.1834129 0.17892146 0.17453983 0.17026536 0.16609542 0.16202746 0.158059 0.15418763 0.15041097 0.1467267 0.14313258 0.13962643 0.13620606 0.13286942 0.12961444 0.12643912 0.12334155 0.1203198 0.11737203 0.114496425 0.11169123 0.10895472 0.106285214 0.10368108 0.101140715 0.09866257 0.09624511 0.09388685 0.09158636 0.08934221 0.087153025 0.085017465 0.082934216 0.080901995 0.07891956 0.07698569 0.075099185 0.0732589 0.0714637 0.069712475 0.06800416 0.06633769 0.064712055 0.06312625 0.061579295 0.060070243 0.058598164 0.05716216 0.055761334 0.054394834 0.053061817 0.05176146 0.05049297

</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="3.825" PeakHeight="262.45" Num="5" zHalfNm="245.399" Error="0.295">
-48.546 -7.311 4.532 -1.595 0.22
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="10" 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="6513.25" A="-1.37420415E11" B="4.2413708E7" C="-3272.5374" Error="0.00164"/>
<QuasiParabolic ID="2" StartDistance="6513.25" EndDistance="6546.5" A="0.0" B="1597.8285" C="-0.2052919" Error="0.0305"/>
<QuasiParabolic ID="3" StartDistance="6546.5" EndDistance="6577.0" A="2.06322115E10" B="-6398322.0" C="495.98047" Error="0.0305"/>
<QuasiParabolic ID="4" StartDistance="6577.0" EndDistance="6578.0" A="-1.76631631E12" B="5.3699488E8" C="-40814.13" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6578.0" EndDistance="6582.0" A="7.3533468E12" B="-2.23578189E9" C="169947.27" Error="0.0379"/>
<QuasiParabolic ID="6" StartDistance="6582.0" EndDistance="6594.0" A="8.1695442E12" B="-2.4837911E9" C="188787.2" Error="0.0332"/>
<QuasiParabolic ID="7" StartDistance="6594.0" EndDistance="6617.0" A="1.35798677E13" B="-4.12477466E9" C="313217.25" Error="0.013"/>
<QuasiParabolic ID="8" StartDistance="6617.0" EndDistance="6627.0" A="8.3578658E12" B="-2.54641536E9" C="193951.78" Error="0.0106"/>
<QuasiParabolic ID="9" StartDistance="6627.0" EndDistance="6632.45" A="-9.6969423E13" B="2.92409057E10" C="-2204367.2" Error="0.00283"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="99.75" Depth="0.154"/>
<TopsideChapman PeakHeight="262.45" PeakDensity="181521.4" PeakScaleHeight="12.594" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
