<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-31 -090 06:45:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 90% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.03.31 (090) 06:45:00</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">
FF202609003310645001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.731" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="16.045" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.125" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.125" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.525" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="225.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="225.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="4.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="265.496" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.125" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.125" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="238.055" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="218.687" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.263" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="27.716" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.431" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="14.832" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="25.740" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.760" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="48">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
225.000 225.000 225.000 225.000 227.500 227.500 228.000 228.500 229.000 229.500 230.000 230.000 232.500 232.500 232.500 235.000 235.000 235.000 235.000 236.250 237.500 237.500 237.500 240.000 241.000 242.000 243.000 244.000 245.000 247.500 249.375 251.250 253.125 255.000 256.667 258.333 260.000 260.000 262.500 265.496 268.955 272.992 277.766 283.500 290.514 299.292 310.594 325.691
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
96 96 96 93 93 93 0 0 0 0 93 96 108 108 81 81 81 81 84 0 72 69 72 72 0 0 0 0 90 90 0 0 0 57 0 0 90 93 93 93 105 108 102 0 0 0 105 102
</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 10.9375 -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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="385">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 136.83333 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 163.66667 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 190.5 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 238.055 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0
</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 0.353812 0.35332385 0.35253775 0.3513833 0.34986797 0.34800196 0.34587008 0.3433416 0.34043694 0.33717975 0.3335292 0.3294542 0.3250611 0.3201454 0.31483623 0.30908883 0.30277678 0.29597685 0.28861925 0.2806141 0.2719544 0.2625736 0.25233817 0.24117032 0.22898808 0.2156547 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 0.20191304 0.20765217 0.2133913 0.21913044 0.22486956 0.2306087 0.23634782 0.24208696 0.24782608 0.25356522 0.25930434 0.26504347 0.27078262 0.27652174 0.28226086 0.288 0.29373914 0.29947826 0.3052174 0.3109565 0.31669566 0.32243478 0.3281739 0.33391306 0.33965218 0.3453913 0.35113043 0.354 0.3728988 0.41408074 0.45936686 0.50825673 0.56035733 0.6154511 0.673472 0.73446655 0.7985837 0.8660491 0.9371662 1.0122496 1.0916892 1.1759039 1.2653327 1.3604207 1.4616348 1.5693684 1.683971 1.8055995 1.9341904 2.0693464 2.210243 2.3556166 2.5037832 2.6527188 2.8002894 2.944457 3.0834947 3.2160301 3.3411062 3.4581 3.5667803 3.6670477 3.7589927 3.8428316 3.9187844 3.9871097 4.0480776 4.10194 4.148947 4.1892915 4.2231717 4.250735 4.2721143 4.2874084 4.2966847 4.2999935 4.3 4.298318 4.292978 4.284138 4.2719646 4.2566233 4.238281 4.2171016 4.1932483 4.1668816 4.1381598 4.1072364 4.0742626 4.0393844 4.0027447 3.9644804 3.924725 3.883607 3.8412488 3.7977693 3.7532816 3.7078938 3.6617098 3.6148274 3.5673406 3.5193381 3.470904 3.4221182 3.3730555 3.3237872 3.2743795 3.2248955 3.1753938 3.1259296 3.076554 3.0273154 2.9782581 2.9294238 2.880851 2.832575 2.784629 2.7370431 2.6898448 2.6430597 2.596711 2.5508192 2.5054038 2.4604816 2.4160683 2.3721771 2.3288207 2.286009 2.2437515 2.2020562 2.1609294 2.1203768 2.080403 2.041011 2.0022037 1.9639825 1.9263482 1.889301 1.85284 1.8169639 1.7816712 1.7469591 1.7128247 1.6792647 1.6462752 1.6138519 1.5819904 1.5506856 1.5199324 1.4897252 1.4600586 1.4309262 1.4023223 1.3742404 1.3466741 1.3196169 1.2930621 1.2670029 1.2414325 1.216344 1.1917304 1.1675847 1.1438998 1.1206689 1.0978847 1.0755403 1.0536286 1.0321425 1.0110753 0.9904196 0.9701689 0.95031613 0.93085444 0.91177714 0.8930775 0.87474877 0.8567845 0.8391781 0.82192314 0.8050132 0.788442 0.7722034 0.7562911 0.7406992 0.72542155 0.7104524 0.6957859 0.6814162 0.66733783 0.6535451 0.6400326 0.6267948 0.61382663 0.6011227 0.5886779 0.5764872 0.5645456 0.5528482 0.54139024 0.53016704 0.51917386 0.5084062 0.4978596 0.4875296 0.47741196 0.4675024 0.45779672 0.44829088 0.43898088 0.42986274 0.42093262 0.4121867 0.40362132 0.39523277 0.3870175 0.37897196 0.37109277 0.36337647 0.35581982 0.34841952 0.3411724 0.33407533 0.32712525 0.32031915 0.31365407 0.30712715 0.30073556 0.2944765 0.28834727 0.2823452 0.27646768 0.27071214 0.26507607 0.259557 0.25415257 0.24886039 0.24367812 0.23860352 0.23363437 0.22876848 0.22400372 0.21933801 0.2147693 0.21029559 0.20591488 0.2016253 0.19742493 0.19331194 0.1892845 0.18534085 0.18147926 0.17769802 0.17399547 0.17036997 0.16681993 0.16334379 0.15994 0.15660708 0.15334353 0.15014794 0.14701888 0.14395498 0.14095487 0.13801725 0.13514079 0.13232425 0.12956637 0.12686592 0.12422173 0.12163261 0.119097434 0.11661506 0.1141844 0.11180438 0.10947394 0.10719206 0.104957715 0.102769926 0.10062773 0.09853016 0.096476294 0.09446523 0.092496075 0.090567954 0.08868001 0.086831406 0.08502133 0.08324897 0.08151356 0.07981431 0.07815047 0.076521315 0.07492611 0.073364146 0.07183474 0.07033722 0.0688709 0.06743515 0.066029325 0.06465281 0.063304976 0.061985236 0.060693007 0.059427716 0.058188796 0.056975704 0.0557879 0.05462485 0.05348605 0.052370984 0.051279165 0.050210103

</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="4.3" PeakHeight="238.055" Num="5" zHalfNm="218.687" Error="1.459">
-50.094 4.558 -3.285 1.693 -0.427
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="9" 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="6506.833" A="-2.10612257E11" B="6.5003784E7" C="-5015.5986" Error="0.00148"/>
<QuasiParabolic ID="2" StartDistance="6506.833" EndDistance="6533.667" A="0.0" B="1656.7247" C="-0.21459386" Error="0.0257"/>
<QuasiParabolic ID="3" StartDistance="6533.667" EndDistance="6559.0" A="2.88579625E10" B="-8949770.0" C="693.82404" Error="0.0257"/>
<QuasiParabolic ID="4" StartDistance="6559.0" EndDistance="6562.0" A="9.0077858E12" B="-2.74684518E9" C="209406.69" Error="0.0367"/>
<QuasiParabolic ID="5" StartDistance="6562.0" EndDistance="6570.0" A="9.2821699E12" B="-2.83047322E9" C="215778.84" Error="0.0151"/>
<QuasiParabolic ID="6" StartDistance="6570.0" EndDistance="6574.0" A="1.91077894E13" B="-5.8215296E9" C="443408.7" Error="0.00849"/>
<QuasiParabolic ID="7" StartDistance="6574.0" EndDistance="6590.0" A="4.2437083E13" B="-1.29189714E10" C="983220.25" Error="0.0263"/>
<QuasiParabolic ID="8" StartDistance="6590.0" EndDistance="6608.055" A="-4.7919764E13" B="1.45034394E10" C="-1097387.6" Error="0.00873"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="80.5" Depth="0.154"/>
<TopsideChapman PeakHeight="238.055" PeakDensity="229404.47" PeakScaleHeight="14.832" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
