<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-20 -140 06:15:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 50% PACIFIC flags: F2o cusp not found, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.20 (140) 06:15:00</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">
FF202614005200615001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.050" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.561" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="10.860" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.675" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.675" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.425" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="251.301" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="251.301" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.775" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="265.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.675" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.675" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="263.696" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="239.586" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.623" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="34.452" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.914" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="18.710" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="30.900" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.220" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="16">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.675 2.7 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
251.301 255.000 257.500 262.500 265.000 270.000 275.000 282.500 287.500 297.500 305.000 317.500 330.000 345.000 365.000 390.047
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -1.5625 -1.5625 -1.5625 10.9375 -1.5625 -1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="451">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 142.97034 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 175.94067 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 208.911 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 263.696 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0
</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 0.3522771 0.35127333 0.35005456 0.34862584 0.34699297 0.34509096 0.3429302 0.34059224 0.33794925 0.33508652 0.33195344 0.32857084 0.32496107 0.32102552 0.31680027 0.31226626 0.3073875 0.30222264 0.29668224 0.29078123 0.28444248 0.27772173 0.27047327 0.26279968 0.25455108 0.24573447 0.23622134 0.22606947 0.21504594 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 0.2 0.20027713 0.20494801 0.20961887 0.21428974 0.2189606 0.22363147 0.22830233 0.2329732 0.23764406 0.24231493 0.2469858 0.25165665 0.25632754 0.2609984 0.26566926 0.2703401 0.275011 0.27968186 0.28435272 0.28902358 0.29369447 0.29836532 0.30303618 0.30770704 0.31237793 0.3170488 0.32171965 0.3263905 0.3310614 0.33573225 0.3404031 0.34507397 0.34974483 0.354 0.35619572 0.382785 0.41291204 0.44628003 0.48235452 0.520564 0.56040967 0.6015793 0.6439128 0.6873546 0.7319498 0.7777902 0.8250123 0.8737824 0.92428106 0.9767299 1.0313567 1.0883867 1.1481007 1.2107419 1.2765679 1.3458426 1.4187431 1.495395 1.5757749 1.6596583 1.7465972 1.8357964 1.926228 2.0166292 2.1056552 2.192055 2.2747781 2.3530977 2.4265566 2.494936 2.5582547 2.6166165 2.6702206 2.719304 2.7641227 2.8049088 2.8419104 2.8753452 2.905396 2.9322488 2.956052 2.9769473 2.9950454 3.0104477 3.0232375 3.033481 3.0412343 3.0465374 3.0494175 3.05 3.0499218 3.0485742 3.0456002 3.0410573 3.0350044 3.0275002 3.0186033 3.0083723 2.9968655 2.9841409 2.9702551 2.9552653 2.9392264 2.9221933 2.9042199 2.8853583 2.86566 2.8451753 2.823953 2.80204 2.7794836 2.756328 2.732617 2.7083921 2.6836946 2.6585634 2.6330366 2.6071508 2.5809407 2.5544403 2.527682 2.5006971 2.473515 2.4461646 2.4186728 2.3910656 2.363368 2.335604 2.3077955 2.2799642 2.2521303 2.2243135 2.1965318 2.1688023 2.141142 2.1135657 2.0860882 2.0587234 2.0314844 2.0043826 1.9774301 1.9506371 1.9240137 1.8975692 1.8713121 1.8452505 1.8193918 1.7937429 1.7683102 1.7430992 1.7181154 1.6933638 1.6688485 1.6445737 1.6205429 1.5967592 1.5732254 1.5499442 1.5269173 1.504147 1.4816346 1.4593813 1.4373882 1.415656 1.3941851 1.3729757 1.3520281 1.3313421 1.3109171 1.290753 1.2708488 1.2512038 1.231817 1.2126874 1.1938136 1.1751943 1.1568279 1.1387131 1.1208482 1.1032312 1.0858605 1.068734 1.05185 1.0352062 1.0188005 1.002631 0.9866951 0.9709909 0.955516 0.940268 0.9252446 0.9104435 0.89586216 0.8814982 0.86734927 0.85341275 0.83968633 0.8261674 0.8128536 0.79974234 0.7868312 0.7741176 0.7615991 0.7492733 0.7371376 0.72518957 0.71342677 0.70184666 0.6904469 0.679225 0.66817856 0.65730524 0.6466025 0.6360681 0.62569964 0.61549485 0.6054513 0.59556675 0.5858389 0.5762656 0.56684446 0.5575734 0.54845005 0.53947246 0.53063834 0.5219456 0.51339215 0.5049759 0.4966948 0.48854682 0.48052993 0.47264218 0.4648816 0.45724624 0.44973418 0.44234356 0.43507248 0.42791915 0.4208817 0.41395834 0.40714735 0.40044692 0.3938554 0.387371 0.3809921 0.37471706 0.3685442 0.36247194 0.3564987 0.35062286 0.34484297 0.33915746 0.33356482 0.3280636 0.32265237 0.31732962 0.312094 0.3069441 0.30187854 0.296896 0.2919951 0.28717458 0.28243312 0.27776945 0.27318233 0.26867053 0.26423278 0.25986797 0.25557485 0.2513523 0.2471992 0.24311437 0.23909672 0.23514517 0.23125865 0.2274361 0.22367647 0.21997875 0.21634193 0.21276501 0.20924702 0.205787 0.20238401 0.1990371 0.19574538 0.19250794 0.18932387 0.18619233 0.18311244 0.18008338 0.17710428 0.17417435 0.17129278 0.16845877 0.16567156 0.16293034 0.1602344 0.15758297 0.15497534 0.15241078 0.14988856 0.14740802 0.14496846 0.14256921 0.14020962 0.137889 0.13560674 0.1333622 0.13115476 0.12898381 0.12684874 0.12474898 0.12268393 0.120653026 0.1186557 0.1166914 0.114759594 0.112859726 0.110991284 0.10915374 0.107346594 0.10556934 0.103821486 0.10210255 0.10041204 0.0987495 0.09711447 0.0955065 0.093925126 0.092369914 0.090840444 0.089336276 0.087857 0.08640221 0.08497149 0.08356445 0.082180694 0.080819845 0.07948151 0.07816534 0.07687094 0.07559797 0.07434607 0.0731149 0.07190411 0.070713356 0.06954231 0.06839066 0.06725807 0.06614423 0.06504883 0.06397156 0.06291213 0.061870236 0.060845595 0.05983792 0.058846924 0.057872336 0.056913886 0.055971306 0.055044334 0.054132707 0.05323618 0.052354492 0.051487405 0.05063468

</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="3.05" PeakHeight="263.696" Num="5" zHalfNm="239.586" Error="3.291">
-58.641 6.942 -4.911 2.624 -0.799
</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="6512.97" A="-1.39739873E11" B="4.3129592E7" C="-3327.7754" Error="0.00172"/>
<QuasiParabolic ID="2" StartDistance="6512.97" EndDistance="6545.941" A="0.0" B="599.0898" C="-0.051948674" Error="0.0107"/>
<QuasiParabolic ID="3" StartDistance="6545.941" EndDistance="6578.0" A="3.23401093E10" B="-9967073.0" C="767.9337" Error="0.0107"/>
<QuasiParabolic ID="4" StartDistance="6578.0" EndDistance="6581.0" A="7.9154811E12" B="-2.40678707E9" C="182952.48" Error="0.0163"/>
<QuasiParabolic ID="5" StartDistance="6581.0" EndDistance="6589.0" A="4.08466725E12" B="-1.24258291E9" C="94500.57" Error="0.0106"/>
<QuasiParabolic ID="6" StartDistance="6589.0" EndDistance="6598.0" A="8.6189377E12" B="-2.61889818E9" C="198940.94" Error="0.0131"/>
<QuasiParabolic ID="7" StartDistance="6598.0" EndDistance="6609.0" A="2.16967487E13" B="-6.5830728E9" C="499348.22" Error="0.0038"/>
<QuasiParabolic ID="8" StartDistance="6609.0" EndDistance="6633.696" A="-1.53147817E13" B="4.6172698E9" C="-348007.06" Error="0.007"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="98.911" Depth="0.154"/>
<TopsideChapman PeakHeight="263.696" PeakDensity="115415.63" PeakScaleHeight="18.71" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
