<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-16 -136 21:25:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 90% PACIFIC flags: One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.16 (136) 21:25:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.21" 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">
FF202613605162125001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.867" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="14.695" 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="4.125" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="217.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="217.500" 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="3.675" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="255.892" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.569" 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="223.957" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="206.772" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.189" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="24.500" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.026" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="13.216" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="23.280" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.610" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="35">
<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 3.725 3.75 3.775 3.8
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
217.500 217.500 217.500 220.000 220.000 220.000 220.000 222.500 222.500 225.000 225.000 225.000 227.500 227.500 230.000 230.000 230.000 232.500 235.000 235.951 237.002 238.169 239.474 240.941 242.604 244.504 246.695 249.251 252.271 255.892 260.317 265.843 272.943 282.399 295.617
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 0 57 72 69 69 69 75 72 72 69 69 69 93 93 87 90 93 87 90 84 72 66 51 54 51 45 51 51 75 78 48 0 0 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 -9.375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="342">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
91.238 92.0 93.0 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 135.08333 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 160.16667 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 185.25 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 223.957 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.24607995 0.29872397 0.34141648 0.37683058 0.40693328 0.43293378 0.4556184 0.47550377 0.49295443 0.5082341 0.5215378 0.5330123 0.54277354 0.5509085 0.557483 0.5625477 0.5661405 0.5682862 0.569 0.56869566 0.5677162 0.566067 0.56375855 0.5608061 0.55716383 0.55279404 0.5477323 0.5419571 0.5354579 0.5281768 0.5200755 0.51113844 0.5012676 0.490513 0.47873598 0.46583405 0.45178643 0.43645537 0.41956228 0.40103212 0.38056198 0.35777283 0.3320482 0.30275515 0.292 0.292 0.292 0.292 0.292 0.292 0.292 0.292 0.292 0.292 0.292 0.292 0.292 0.292 0.292 0.292 0.292 0.292 0.292 0.292 0.292 0.292 0.292 0.292 0.292 0.292 0.292 0.30120265 0.31224585 0.32328904 0.33433223 0.34537542 0.3564186 0.3674618 0.378505 0.38954818 0.40059137 0.41163456 0.42267776 0.43372092 0.4447641 0.4558073 0.4668505 0.47789368 0.48893687 0.49998006 0.5110233 0.5220665 0.5331096 0.5441528 0.555196 0.5662392 0.569 0.60635793 0.6625693 0.72558266 0.794461 0.8681709 0.9459224 1.0272733 1.1120384 1.2002925 1.2922041 1.3880602 1.4881836 1.5928637 1.7023853 1.8168745 1.9363565 2.0605123 2.1887655 2.320101 2.4530156 2.5857902 2.7164452 2.8429613 2.9636574 3.0771587 3.1825364 3.2792222 3.3670464 3.4459789 3.5162258 3.578033 3.6316822 3.6774702 3.7156785 3.7465374 3.7702634 3.787012 3.7968988 3.8 3.7999961 3.7977269 3.7914207 3.7812831 3.767522 3.750345 3.7299583 3.7065659 3.680369 3.6515641 3.6203434 3.586894 3.5513966 3.5140264 3.474951 3.4343326 3.3923259 3.3490782 3.3047307 3.259417 3.2132642 3.1663918 3.1189134 3.0709357 3.022559 2.9738772 2.9249785 2.8759449 2.826853 2.7777743 2.7287748 2.6799154 2.631253 2.5828393 2.5347223 2.4869454 2.439549 2.3925688 2.3460386 2.2999873 2.2544422 2.209427 2.164963 2.121069 2.0777614 2.0350544 1.9929605 1.9514897 1.910651 1.8704511 1.8308957 1.7919887 1.7537332 1.7161304 1.679181 1.6428845 1.6072395 1.5722437 1.5378939 1.5041866 1.4711171 1.4386808 1.4068718 1.3756843 1.3451117 1.3151475 1.2857845 1.2570151 1.2288318 1.2012265 1.1741912 1.1477176 1.1217973 1.0964218 1.0715824 1.0472704 1.0234771 1.0001936 0.9774113 0.9551212 0.9333146 0.9119828 0.89111686 0.8707083 0.8507483 0.8312285 0.8121402 0.79347515 0.77522486 0.7573812 0.739936 0.72288114 0.70620877 0.68991095 0.67398006 0.65840834 0.6431884 0.62831277 0.61377424 0.5995656 0.5856798 0.57211006 0.5588494 0.54589117 0.5332289 0.520856 0.50876635 0.49695355 0.4854116 0.47413453 0.46311647 0.45235166 0.44183448 0.4315594 0.42152104 0.41171408 0.40213335 0.39277372 0.38363028 0.37469807 0.3659724 0.35744855 0.34912193 0.3409881 0.33304268 0.32528135 0.31769994 0.31029433 0.3030605 0.29599458 0.28909263 0.28235096 0.2757659 0.2693338 0.2630512 0.25691465 0.25092077 0.2450663 0.23934801 0.23376276 0.2283075 0.2229792 0.21777496 0.21269189 0.2077272 0.20287813 0.19814204 0.19351628 0.18899833 0.18458566 0.18027583 0.17606647 0.17195526 0.1679399 0.16401817 0.16018789 0.15644695 0.15279326 0.1492248 0.1457396 0.14233571 0.13901123 0.13576433 0.1325932 0.12949608 0.12647124 0.12351699 0.1206317 0.11781376 0.1150616 0.112373695 0.10974854 0.10718467 0.104680665 0.10223512 0.09984668 0.09751402 0.095235825 0.09301083 0.09083779 0.08871551 0.08664279 0.08461847 0.08264144 0.08071058 0.07882482 0.07698311 0.07518441 0.07342773 0.071712084 0.07003651 0.06840008 0.066801876 0.06524101 0.0637166 0.062227804 0.06077379 0.059353746 0.057966873 0.056612406 0.055289578 0.053997654 0.052735917 0.05150366 0.05030019

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.569" PeakHeight="110.0" Num="3" Error="0.0">
-23.298 5.059 -0.523
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.569" EndFrequency="3.8" PeakHeight="223.957" Num="5" zHalfNm="206.772" Error="0.967">
-40.07 2.738 -2.037 0.998 -0.336
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="9" EarthRadius="6370.0">
<QuasiParabolic ID="0" StartDistance="6460.032" EndDistance="6480.001" A="-1.42295119E12" B="4.39182464E8" C="-33887.21" Error="0.00469"/>
<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6505.083" A="-6.7207207E11" B="2.07429648E8" C="-16005.051" Error="0.0062"/>
<QuasiParabolic ID="2" StartDistance="6505.083" EndDistance="6530.167" A="0.0" B="-819.4816" C="0.21176831" Error="0.0119"/>
<QuasiParabolic ID="3" StartDistance="6530.167" EndDistance="6550.0" A="2.65230746E11" B="-8.148676E7" C="6258.813" Error="0.0119"/>
<QuasiParabolic ID="4" StartDistance="6550.0" EndDistance="6554.0" A="-3.20176685E11" B="9.7263608E7" C="-7386.2534" Error="0.00501"/>
<QuasiParabolic ID="5" StartDistance="6554.0" EndDistance="6559.0" A="2.01236016E13" B="-6.1413018E9" C="468549.47" Error="0.0174"/>
<QuasiParabolic ID="6" StartDistance="6559.0" EndDistance="6564.0" A="1.58420833E13" B="-4.8357617E9" C="369026.66" Error="0.00685"/>
<QuasiParabolic ID="7" StartDistance="6564.0" EndDistance="6579.0" A="3.50594196E13" B="-1.06911355E10" C="815048.44" Error="0.0153"/>
<QuasiParabolic ID="8" StartDistance="6579.0" EndDistance="6593.957" A="-4.8084713E13" B="1.45844787E10" C="-1105882.9" Error="0.00674"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="75.25" Depth="0.277"/>
<TopsideChapman PeakHeight="223.957" PeakDensity="179156.33" PeakScaleHeight="13.216" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
