<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-01 -121 23:15:00.000"
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" >
2026.05.01 (121) 23:15:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.20" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.98" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="75.82641" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202612105012315001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.750" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.656" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="13.709" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.725" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.725" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.225" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="245.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="245.000" 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="3.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="285.947" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.725" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.725" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="251.451" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="233.047" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.260" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="26.421" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.037" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="13.864" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="26.060" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.160" 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" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
245.000 245.000 246.250 247.500 247.500 250.000 250.625 251.250 251.875 252.500 253.125 253.750 254.375 255.000 255.833 256.667 257.500 258.333 259.167 260.000 260.000 262.500 262.500 265.000 265.000 265.000 267.500 270.000 270.000 270.000 272.500 273.750 275.000 277.500 277.500 279.891 282.671 285.947 289.861 294.623 300.539 308.087
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 87 0 0 0 0 75 0 99 0 87 84 72 0 0 96 87 84 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 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="376">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 141.5 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 204.5 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 251.451 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0
</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 0.3529118 0.35205317 0.35097662 0.34968653 0.34811512 0.3462709 0.3442354 0.34187606 0.33927825 0.33638793 0.33322465 0.32980946 0.32603815 0.32200715 0.31768805 0.31300464 0.30795586 0.3025528 0.29676917 0.29057935 0.28398937 0.27689454 0.26927269 0.26112098 0.25231692 0.24289067 0.23271252 0.2217551 0.20985778 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 0.2048889 0.20977777 0.21466666 0.21955556 0.22444445 0.22933333 0.23422222 0.23911111 0.244 0.2488889 0.25377777 0.25866666 0.26355556 0.26844445 0.27333334 0.27822223 0.28311113 0.288 0.29288888 0.29777777 0.30266666 0.30755556 0.31244445 0.31733334 0.32222223 0.32711112 0.332 0.33688888 0.34177777 0.34666666 0.35155556 0.354 0.37362638 0.41414636 0.45668694 0.5016059 0.5492022 0.59975195 0.653481 0.7106052 0.77133656 0.83581984 0.9041877 0.9765206 1.0528657 1.1332209 1.2174908 1.3055776 1.3972956 1.4923933 1.590571 1.6914648 1.7946805 1.8997921 2.0063393 2.1138015 2.2216814 2.3294444 2.436567 2.542506 2.6467907 2.74887 2.8482406 2.9444487 3.0370057 3.125477 3.2094507 3.2885337 3.362342 3.4305322 3.4928014 3.5488439 3.5984085 3.641275 3.6772292 3.7061217 3.727817 3.742215 3.7492473 3.75 3.7494304 3.7455359 3.7381005 3.7273016 3.7133167 3.696323 3.676496 3.6540103 3.629037 3.6017435 3.5722938 3.5408478 3.5075598 3.4725797 3.436052 3.3981159 3.3589046 3.318546 3.2771618 3.234869 3.1917777 3.1479936 3.1036155 3.0587382 3.0134501 2.9678352 2.9219718 2.8759341 2.8297908 2.7836068 2.7374423 2.691353 2.6453915 2.5996056 2.55404 2.508736 2.463731 2.4190605 2.3747554 2.330845 2.287356 2.2443116 2.2017334 2.1596403 2.1180499 2.0769773 2.0364354 1.9964359 1.956989 1.9181031 1.8797851 1.8420409 1.8048749 1.7682908 1.7322905 1.6968758 1.662047 1.6278038 1.594145 1.5610691 1.5285733 1.4966547 1.4653097 1.4345343 1.4043239 1.3746736 1.3455781 1.3170319 1.2890288 1.2615628 1.2346275 1.2082162 1.1823221 1.1569384 1.1320579 1.1076734 1.0837775 1.0603629 1.0374223 1.0149481 0.99293286 0.9713689 0.9502489 0.92956513 0.9093103 0.8894768 0.87005717 0.85104406 0.83243006 0.814208 0.79637045 0.77891034 0.76182055 0.74509406 0.7287239 0.7127032 0.6970252 0.68168306 0.6666704 0.65198046 0.637607 0.62354356 0.60978395 0.59632206 0.58315176 0.5702671 0.5576623 0.54533154 0.5332692 0.5214697 0.5099276 0.49863747 0.48759404 0.4767922 0.4662268 0.45589286 0.44578552 0.43589994 0.4262314 0.41677535 0.40752715 0.39848238 0.38963673 0.3809859 0.37252566 0.36425197 0.3561608 0.34824812 0.34051016 0.3329431 0.32554325 0.31830698 0.3112307 0.30431095 0.2975443 0.29092744 0.2844571 0.27813005 0.27194318 0.2658934 0.2599777 0.2541932 0.24853693 0.24300614 0.23759806 0.23230998 0.22713928 0.22208336 0.21713969 0.2123058 0.20757928 0.20295775 0.1984389 0.19402045 0.18970019 0.18547596 0.18134561 0.1773071 0.17335838 0.16949748 0.16572241 0.16203132 0.15842232 0.1548936 0.15144339 0.14806995 0.14477156 0.14154656 0.13839333 0.13531028 0.13229585 0.12934852 0.12646678 0.123649195 0.120894335 0.11820081 0.11556725 0.11299233 0.11047474 0.10801321 0.1056065 0.10325338 0.10095266 0.09870318 0.0965038 0.09435341 0.092250906 0.09019524 0.088185355 0.08622025 0.08429891 0.08242037 0.08058368 0.07878791 0.077032134 0.07531548 0.073637076 0.071996056 0.0703916 0.06882289 0.06728913 0.06578954 0.06432337 0.06288987 0.0614883 0.060117967 0.058778163 0.057468217 0.056187455 0.054935236 0.05371092 0.052513883 0.051343523 0.05019924

</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="3.75" PeakHeight="251.451" Num="5" zHalfNm="233.047" Error="0.457">
-47.501 0.829 -0.472 0.147 0.046
</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="6511.5" A="-1.53036653E11" B="4.7233536E7" C="-3644.4375" Error="0.00157"/>
<QuasiParabolic ID="2" StartDistance="6511.5" EndDistance="6543.0" A="0.0" B="917.6836" C="-0.10090799" Error="0.0163"/>
<QuasiParabolic ID="3" StartDistance="6543.0" EndDistance="6574.0" A="3.5232227E10" B="-1.0860943E7" C="836.9982" Error="0.0163"/>
<QuasiParabolic ID="4" StartDistance="6574.0" EndDistance="6575.0" A="2.34070202E13" B="-7.1212314E9" C="541631.8" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6575.0" EndDistance="6581.0" A="6.1379162E12" B="-1.86827213E9" C="142167.25" Error="0.0119"/>
<QuasiParabolic ID="6" StartDistance="6581.0" EndDistance="6588.0" A="1.49463069E13" B="-4.5451878E9" C="345549.38" Error="0.0109"/>
<QuasiParabolic ID="7" StartDistance="6588.0" EndDistance="6602.0" A="2.58558352E13" B="-7.8571274E9" C="596910.94" Error="0.00588"/>
<QuasiParabolic ID="8" StartDistance="6602.0" EndDistance="6612.0" A="-6.1293136E12" B="1.83240602E9" C="-136922.27" Error="0.00773"/>
<QuasiParabolic ID="9" StartDistance="6612.0" EndDistance="6621.451" A="-5.0008833E13" B="1.51050977E10" C="-1140604.4" Error="0.0031"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="94.5" Depth="0.154"/>
<TopsideChapman PeakHeight="251.451" PeakDensity="174472.7" PeakScaleHeight="13.864" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
