<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-19 -139 00:45:00.000"
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" >
2026.05.19 (139) 00:45:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.22" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.99" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="75.82641" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202613905190045001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.700" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.647" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="13.495" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="247.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="247.500" 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="0.075" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.575" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="282.636" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="251.786" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="233.794" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.681" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="25.815" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.994" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="13.680" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="25.170" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.290" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="31">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
247.500 248.333 249.167 250.000 252.500 252.500 252.500 252.500 252.500 255.000 257.500 257.500 260.000 260.000 262.500 262.500 265.000 265.000 267.500 270.000 272.500 275.000 275.000 277.500 279.757 282.636 286.439 291.691 299.418 311.909 335.534
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 0 0 93 93 84 84 84 78 90 87 93 90 93 90 90 87 90 93 90 90 78 78 84 84 81 78 78 75 81 81
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="374">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 142.08333 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 174.16667 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 206.25 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 251.786 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0
</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 0.35298675 0.3521277 0.3511249 0.34983355 0.34833378 0.34655926 0.3445913 0.34229675 0.3398302 0.33706498 0.33401984 0.33071515 0.327109 0.32322994 0.31904808 0.31454307 0.3097052 0.30453598 0.29904887 0.29310012 0.2867813 0.2800439 0.2727352 0.26502842 0.25670934 0.24776544 0.23820302 0.22786881 0.21668318 0.20459439 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 0.204 0.2088 0.2136 0.2184 0.2232 0.228 0.2328 0.2376 0.2424 0.2472 0.252 0.2568 0.2616 0.2664 0.2712 0.276 0.2808 0.2856 0.2904 0.2952 0.3 0.3048 0.3096 0.3144 0.3192 0.324 0.3288 0.3336 0.3384 0.3432 0.348 0.3528 0.354 0.38051078 0.41967064 0.4630235 0.5102982 0.561208 0.615508 0.67304575 0.73373634 0.79760045 0.86467326 0.9350416 1.0088528 1.086227 1.1673092 1.252214 1.3410516 1.4338639 1.5306491 1.6313279 1.7356989 1.8434514 1.9541457 2.0672042 2.1818857 2.2973611 2.4126995 2.5269608 2.639135 2.7483196 2.8536584 2.9543889 3.0499113 3.1396832 3.2233512 3.3005912 3.3712022 3.435039 3.492029 3.5421305 3.5853076 3.621583 3.6509607 3.673457 3.689097 3.697889 3.7 3.6999118 3.6972075 3.6908584 3.6810458 3.6679518 3.651759 3.632648 3.6107986 3.5863872 3.5595865 3.5305665 3.4994915 3.4665215 3.4318113 3.3955102 3.3577616 3.3187034 3.2784677 3.2371805 3.1949615 3.1519256 3.1081803 3.063829 3.0189679 2.9736886 2.9280772 2.8822148 2.8361766 2.7900336 2.7438521 2.6976936 2.6516154 2.605671 2.5599089 2.5143752 2.4691114 2.424156 2.379544 2.3353078 2.2914767 2.2480772 2.2051327 2.1626651 2.120694 2.0792356 2.0383055 1.9979169 1.9580812 1.918808 1.8801056 1.8419809 1.8044393 1.7674851 1.7311214 1.6953502 1.6601726 1.6255887 1.5915978 1.5581986 1.5253887 1.4931656 1.4615258 1.4304652 1.3999796 1.370064 1.3407133 1.3119217 1.2836834 1.255992 1.2288413 1.2022243 1.1761341 1.1505637 1.1255059 1.1009533 1.0768986 1.0533339 1.0302517 1.0076447 0.9855046 0.96382415 0.9425954 0.92181075 0.9014624 0.8815426 0.86204386 0.84295845 0.82427883 0.80599755 0.78810704 0.77059996 0.7534691 0.7367071 0.7203069 0.70426136 0.6885636 0.67320657 0.65818363 0.64348805 0.6291132 0.6150525 0.60129964 0.5878483 0.57469225 0.5618254 0.54924166 0.5369352 0.52490026 0.513131 0.50162196 0.49036756 0.47936243 0.4686012 0.45807874 0.44778988 0.4377297 0.42789316 0.41827554 0.40887207 0.3996781 0.39068913 0.3819007 0.3733084 0.36490798 0.3566953 0.34866616 0.34081662 0.3331427 0.32564053 0.31830636 0.3111365 0.3041273 0.29727525 0.29057685 0.2840287 0.2776275 0.27136993 0.2652529 0.25927323 0.2534279 0.24771386 0.24212827 0.23666823 0.23133096 0.2261137 0.2210138 0.21602863 0.21115562 0.20639227 0.20173615 0.19718483 0.19273598 0.18838732 0.18413658 0.17998159 0.1759202 0.17195031 0.16806985 0.16427685 0.16056931 0.15694535 0.15340306 0.14994062 0.14655626 0.14324819 0.14001471 0.13685413 0.13376483 0.13074522 0.1277937 0.124908745 0.12208887 0.119332604 0.11663852 0.114005215 0.111431316 0.10891549 0.106456436 0.104052864 0.10170353 0.09940721 0.097162716 0.09496887 0.09282453 0.090728596 0.08867996 0.086677566 0.084720366 0.08280735 0.080937505 0.07910988 0.0773235 0.075577445 0.07387081 0.072202705 0.07057225 0.06897861 0.067420945 0.06589845 0.06441032 0.0629558 0.06153411 0.06014452 0.05878631 0.057458762 0.056161188 0.054892913 0.053653274 0.052441623 0.051257335 0.050099786

</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="3.7" PeakHeight="251.786" Num="5" zHalfNm="233.794" Error="0.78">
-46.407 1.699 -1.314 0.737 -0.251
</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="6512.083" A="-1.47549225E11" B="4.5539884E7" C="-3513.7546" Error="0.00163"/>
<QuasiParabolic ID="2" StartDistance="6512.083" EndDistance="6544.167" A="0.0" B="-284.4814" C="0.083711386" Error="0.00601"/>
<QuasiParabolic ID="3" StartDistance="6544.167" EndDistance="6573.0" A="4.7578882E10" B="-1.4619851E7" C="1123.09" Error="0.00601"/>
<QuasiParabolic ID="4" StartDistance="6573.0" EndDistance="6575.0" A="-6.1271297E11" B="1.86290496E8" C="-14159.912" Error="0.00203"/>
<QuasiParabolic ID="5" StartDistance="6575.0" EndDistance="6588.0" A="9.7378695E12" B="-2.96217574E9" C="225267.17" Error="0.0377"/>
<QuasiParabolic ID="6" StartDistance="6588.0" EndDistance="6597.0" A="2.75339784E13" B="-8.364759E9" C="635299.3" Error="0.012"/>
<QuasiParabolic ID="7" StartDistance="6597.0" EndDistance="6608.0" A="2.20247894E13" B="-6.6945485E9" C="508710.7" Error="0.026"/>
<QuasiParabolic ID="8" StartDistance="6608.0" EndDistance="6621.786" A="-4.5150026E13" B="1.36368118E10" C="-1029679.2" Error="0.0101"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="96.25" Depth="0.154"/>
<TopsideChapman PeakHeight="251.786" PeakDensity="169851.11" PeakScaleHeight="13.68" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
