<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-08 -098 10:30:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 85% PACIFIC flags: Multiple candidates for F2x cusp, One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.08 (098) 10:30:00</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">
FF202609804081030001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="5.375" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="4.196" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.551" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="220.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="220.000" 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="5.325" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="230.729" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.938" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="183.537" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="157.620" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.244" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="30.568" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="2.892" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="16.790" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="43.090" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.130" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="42">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
4.35 4.375 4.4 4.425 4.45 4.475 4.5 4.525 4.55 4.575 4.6 4.625 4.65 4.675 4.7 4.725 4.75 4.775 4.8 4.825 4.85 4.875 4.9 4.925 4.95 4.975 5.0 5.025 5.05 5.075 5.1 5.125 5.15 5.175 5.2 5.225 5.25 5.275 5.3 5.325 5.35 5.375
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
220.000 220.000 220.000 220.000 220.000 220.000 220.000 220.000 220.000 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 227.500 227.500 227.500 227.500 227.500 227.500 227.500 227.910 228.402 229.005 229.758 230.729 232.025 233.843
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
84 84 0 0 0 0 0 0 0 0 0 0 0 0 0 0 81 81 81 81 81 105 105 105 105 105 105 93 0 0 69 93 93 93 0 93 93 84 84 96 90 0
</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 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 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="377">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.778 90.0 91.0 92.0 93.0 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 118.952 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 127.904 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 136.856 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 183.537 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.21913402 0.57856 0.87593746 1.0509275 1.1860133 1.2983707 1.3949944 1.4794911 1.5540296 1.6200128 1.6784029 1.7299056 1.7750199 1.8141335 1.8475572 1.8755087 1.8981649 1.9156607 1.928093 1.9355268 1.938 1.9363252 1.9311583 1.9226083 1.9105916 1.8951157 1.8760056 1.8532667 1.8267937 1.798 1.798 1.798 1.798 1.798 1.798 1.798 1.798 1.798 1.798 1.798 1.7995013 1.8151402 1.8307793 1.8464183 1.8620572 1.8776962 1.8933351 1.908974 1.924613 1.938 1.9500098 2.033092 2.1172314 2.204074 2.294674 2.3895476 2.4886966 2.5913575 2.6962495 2.8016238 2.9057982 3.0073566 3.1053882 3.199482 3.289509 3.3756514 3.4581287 3.537277 3.6133955 3.6868045 3.7577987 3.826646 3.8935905 3.9588497 4.022617 4.0850816 4.1464124 4.206758 4.26627 4.3250766 4.3833113 4.4411006 4.4985714 4.555849 4.6130705 4.670376 4.7279186 4.7858577 4.844389 4.903736 4.964183 5.0260286 5.0897036 5.1556816 5.2244463 5.295588 5.360343 5.375 5.3746033 5.3710876 5.3640532 5.3536425 5.339998 5.3232636 5.303582 5.281096 5.2559457 5.2282705 5.1982083 5.1658936 5.1314583 5.095032 5.0567417 5.0167093 4.975055 4.931895 4.8873405 4.841501 4.794482 4.7463837 4.697304 4.647335 4.5965686 4.5450892 4.4929795 4.4403186 4.387181 4.333638 4.2797585 4.225606 4.171243 4.1167274 4.0621142 4.007456 3.952801 3.8981962 3.8436856 3.7893097 3.7351077 3.6811152 3.627366 3.5738919 3.5207224 3.4678845 3.415404 3.3633046 3.3116076 3.260333 3.2094998 3.1591246 3.109223 3.0598087 3.0108945 2.962492 2.9146113 2.8672616 2.820451 2.7741866 2.7284744 2.6833193 2.6387262 2.5946984 2.5512385 2.5083492 2.466031 2.4242857 2.3831127 2.3425121 2.302483 2.2630243 2.2241337 2.1858096 2.1480494 2.1108496 2.0742078 2.0381198 2.002582 1.9675907 1.9331411 1.8992288 1.8658491 1.8329971 1.8006678 1.7688557 1.7375556 1.7067622 1.6764697 1.6466724 1.6173646 1.5885406 1.5601941 1.5323197 1.5049111 1.4779624 1.4514673 1.42542 1.3998145 1.3746444 1.349904 1.3255869 1.3016872 1.278199 1.255116 1.2324324 1.2101423 1.1882396 1.1667185 1.1455733 1.1247979 1.1043869 1.0843344 1.0646348 1.0452825 1.0262718 1.0075974 0.98925394 0.9712359 0.95353794 0.93615496 0.9190816 0.9023129 0.88584363 0.8696689 0.8537838 0.8381834 0.82286286 0.8078175 0.79304266 0.7785337 0.76428604 0.7502952 0.7365568 0.7230665 0.70982 0.696813 0.68404144 0.67150116 0.65918815 0.6470984 0.63522804 0.6235732 0.61213005 0.6008949 0.58986413 0.57903403 0.5684011 0.5579618 0.54771274 0.5376505 0.5277718 0.5180733 0.50855184 0.4992042 0.4900273 0.4810181 0.47217354 0.46349072 0.4549667 0.4465986 0.43838367 0.4303191 0.4224022 0.4146303 0.40700078 0.39951104 0.3921586 0.38494095 0.37785563 0.37090027 0.3640725 0.35737 0.35079047 0.34433174 0.33799154 0.33176777 0.32565826 0.319661 0.31377387 0.3079949 0.30232212 0.2967536 0.29128736 0.28592163 0.28065455 0.2754843 0.2704091 0.26542726 0.26053703 0.2557367 0.25102472 0.24639942 0.2418592 0.23740251 0.23302783 0.22873366 0.22451852 0.22038095 0.21631955 0.2123329 0.20841964 0.20457843 0.20080793 0.19710685 0.19347392 0.1899079 0.18640754 0.18297164 0.17959902 0.1762885 0.17303897 0.16984929 0.16671838 0.16364512 0.16062848 0.15766743 0.15476091 0.15190795 0.14910755 0.14635874 0.14366058 0.14101213 0.13841249 0.13586076 0.13335603 0.13089748 0.12848422 0.12611544 0.12379032 0.12150804 0.11926783 0.1170689 0.1149105 0.11279188 0.11071231 0.10867108 0.10666746 0.104700774 0.102770336 0.10087549 0.099015564 0.097189926 0.09539794 0.09363899 0.09191246 0.09021776 0.0885543 0.086921506 0.08531881 0.083745666 0.08220152 0.08068584 0.0791981 0.07773779 0.076304406 0.07489744 0.07351642 0.072160855 0.070830286 0.06952425 0.06824229 0.06698397 0.06574884 0.06453649 0.06334649 0.06217843 0.061031908 0.05990652 0.058801886 0.057717618 0.056653343 0.05560869 0.054583296 0.053576812 0.052588884 0.05161917 0.050667338

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.938" PeakHeight="110.0" Num="3" Error="0.0">
-28.97 10.985 -2.237
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.938" EndFrequency="5.375" PeakHeight="183.537" Num="5" zHalfNm="157.62" Error="1.284">
-38.462 -14.351 9.368 -4.071 0.835
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="11" EarthRadius="6370.0">
<QuasiParabolic ID="0" StartDistance="6459.818" EndDistance="6480.001" A="-1.61574206E13" B="4.986858E9" C="-384784.7" Error="0.00984"/>
<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6488.952" A="-1.15618842E13" B="3.56848282E9" C="-275342.16" Error="3.11E-4"/>
<QuasiParabolic ID="2" StartDistance="6488.952" EndDistance="6497.904" A="0.0" B="-61121.625" C="12.6511345" Error="0.0037"/>
<QuasiParabolic ID="3" StartDistance="6497.904" EndDistance="6506.0" A="3.07837927E12" B="-9.4926682E8" C="73183.34" Error="0.00653"/>
<QuasiParabolic ID="4" StartDistance="6506.0" EndDistance="6508.0" A="1.2585286E14" B="-3.8691193E10" C="2973731.0" Error="0.00881"/>
<QuasiParabolic ID="5" StartDistance="6508.0" EndDistance="6519.0" A="2.46944471E13" B="-7.6037873E9" C="585331.7" Error="0.00797"/>
<QuasiParabolic ID="6" StartDistance="6519.0" EndDistance="6523.0" A="-2.78078496E13" B="8.503682E9" C="-650093.2" Error="0.00379"/>
<QuasiParabolic ID="7" StartDistance="6523.0" EndDistance="6546.0" A="1.18843908E11" B="-5.8848472E7" C="6240.5933" Error="0.00821"/>
<QuasiParabolic ID="8" StartDistance="6546.0" EndDistance="6552.0" A="4.1270571E13" B="-1.26319401E10" C="966605.06" Error="0.00167"/>
<QuasiParabolic ID="9" StartDistance="6552.0" EndDistance="6553.0" A="-1.91447697E14" B="5.840538E10" C="-4454436.0" Error="0.0"/>
<QuasiParabolic ID="10" StartDistance="6553.0" EndDistance="6553.537" A="-1.00634352E15" B="3.07114607E11" C="-2.3431182E7" Error="1.3E-10"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="26.856" Depth="0.14"/>
<TopsideChapman PeakHeight="183.537" PeakDensity="358444.47" PeakScaleHeight="16.79" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
