<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-01 -121 23:20:00.000"
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: 80% PACIFIC flags: Unidentified traces above foF2</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.01 (121) 23:20:00</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">
FF202612105012320001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.456" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="14.341" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="255.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="255.000" 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="3.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="302.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="267.967" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="246.225" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.213" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="31.265" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.501" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="16.494" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="30.620" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.240" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="41">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 3.825 3.85 3.875 3.9 3.925 3.95 3.975 4.0 4.025 4.05 4.075 4.1 4.125 4.15
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
255.000 255.000 257.500 257.500 260.000 260.000 260.000 262.500 262.500 265.000 265.000 265.000 267.500 267.500 270.000 270.000 272.500 272.500 275.000 277.500 277.500 280.000 282.250 284.500 286.750 289.000 291.250 293.500 295.750 298.000 300.250 302.500 302.500 307.500 310.000 315.000 317.500 322.500 327.188 332.342 338.035
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 87 0 0 0 84 84 87 84 0 72 72 72 72 75 96 93 81 81 0 0 0 0 0 0 0 0 0 0 0 93 0 0 0 0 102 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 4.6875 4.6875 -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="439">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 143.83333 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 177.66667 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 211.5 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 267.967 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0
</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 0.35306174 0.35235173 0.35142186 0.35027584 0.34891838 0.3472823 0.34552038 0.3434953 0.34128824 0.33877015 0.3360937 0.33313656 0.32991865 0.32646134 0.32272556 0.31874058 0.31447914 0.30992344 0.30501232 0.29980785 0.29430088 0.288361 0.2820187 0.27533066 0.26815805 0.26053688 0.25234902 0.24358158 0.23417579 0.22406323 0.21320657 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 0.2 0.20151724 0.20606896 0.21062069 0.21517241 0.21972413 0.22427586 0.22882758 0.2333793 0.23793103 0.24248275 0.24703449 0.2515862 0.25613794 0.26068965 0.26524138 0.2697931 0.27434483 0.27889654 0.28344828 0.288 0.29255173 0.29710343 0.30165517 0.30620688 0.31075862 0.31531036 0.31986207 0.3244138 0.3289655 0.33351725 0.33806896 0.3426207 0.3471724 0.35172415 0.354 0.36933494 0.40218127 0.4378589 0.47627687 0.51731026 0.56085783 0.6068544 0.6552418 0.7060079 0.7591634 0.8147322 0.8727747 0.9333576 0.99653846 1.0624 1.1310319 1.202503 1.2768921 1.3542479 1.4345977 1.5179831 1.6043904 1.6937679 1.7860041 1.8809808 1.9785124 2.0783293 2.1801174 2.2835472 2.3881533 2.4934702 2.5990126 2.7042327 2.8086016 2.9115357 3.0125616 3.1111434 3.206824 3.2991903 3.3878465 3.4724746 3.5527923 3.6285641 3.6995916 3.7657137 3.8268023 3.882766 3.9335086 3.9789896 4.019159 4.0539894 4.0834537 4.1075435 4.126248 4.1395593 4.1474767 4.15 4.149998 4.1484313 4.1440024 4.1368275 4.1270223 4.114704 4.0999894 4.082994 4.063833 4.0426207 4.019469 3.9944882 3.967787 3.939471 3.9096434 3.878405 3.845854 3.812085 3.7771897 3.7412572 3.7043734 3.6666205 3.6280782 3.5888228 3.5489273 3.508462 3.4674935 3.4260862 3.3843005 3.342195 3.2998247 3.257242 3.2144966 3.1716356 3.1287036 3.0857422 3.0427918 2.9998891 2.9570694 2.9143658 2.871809 2.8294277 2.7872493 2.7452989 2.7035995 2.662173 2.6210399 2.5802186 2.539726 2.4995782 2.4597895 2.4203732 2.3813412 2.3427045 2.304473 2.266655 2.229259 2.1922915 2.1557586 2.1196659 2.0840178 2.0488176 2.014069 1.9797742 1.9459352 1.9125532 1.879629 1.8471631 1.815155 1.7836044 1.7525102 1.7218711 1.6916853 1.6619508 1.6326653 1.6038262 1.5754306 1.5474755 1.5199574 1.4928731 1.4662186 1.4399902 1.4141839 1.3887955 1.3638208 1.3392553 1.3150948 1.2913345 1.2679698 1.2449961 1.2224085 1.2002023 1.1783726 1.1569146 1.1358234 1.1150938 1.0947212 1.0747006 1.0550269 1.0356952 1.0167006 0.99803823 0.97970307 0.9616903 0.9439951 0.92661256 0.90953785 0.8927663 0.8762931 0.86011356 0.844223 0.82861686 0.8132905 0.79823935 0.78345907 0.76894504 0.75469303 0.7406986 0.7269575 0.71346545 0.70021826 0.6872118 0.67444205 0.66190493 0.6495964 0.6375126 0.6256497 0.6140038 0.6025712 0.59134805 0.5803309 0.569516 0.5588999 0.54847896 0.53824985 0.52820915 0.5183536 0.50867975 0.49918443 0.4898645 0.48071682 0.47173825 0.46292582 0.4542765 0.44578737 0.4374555 0.42927814 0.42125243 0.41337565 0.40564504 0.39805803 0.39061198 0.3833043 0.3761325 0.36909404 0.36218658 0.35540766 0.3487549 0.3422261 0.3358189 0.32953104 0.3233604 0.3173048 0.31136212 0.30553028 0.29980725 0.294191 0.2886796 0.28327107 0.27796352 0.27275512 0.267644 0.26262835 0.25770643 0.2528765 0.24813682 0.24348578 0.23892169 0.23444293 0.23004796 0.22573517 0.22150308 0.21735017 0.21327496 0.20927602 0.20535192 0.20150127 0.19772269 0.19401486 0.19037645 0.18680617 0.18330275 0.17986493 0.17649151 0.17318127 0.16993305 0.16674566 0.163618 0.16054894 0.15753739 0.15458225 0.15168251 0.1488371 0.14604501 0.14330527 0.14061688 0.13797887 0.13539031 0.13285029 0.13035788 0.1279122 0.12551236 0.12315752 0.120846845 0.118579485 0.116354644 0.11417152 0.11202934 0.10992733 0.10786474 0.105840825 0.10385488 0.10190617 0.09999402 0.098117724 0.096276626 0.09447006 0.09269738 0.090957955 0.08925115 0.087576374 0.08593301 0.08432047 0.08273818 0.08118558 0.0796621 0.07816721 0.07670036 0.07526103 0.073848695 0.072462864 0.07110304 0.06976872 0.06845944 0.067174725 0.06591411 0.06467715 0.0634634 0.062272422 0.06110379 0.059957087 0.0588319 0.05772783 0.056644473 0.055581443 0.05453836 0.053514853 0.05251055 0.05152509 0.050558124

</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="4.15" PeakHeight="267.967" Num="5" zHalfNm="246.225" Error="1.331">
-57.421 1.744 -1.33 0.786 -0.246
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="11" 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="6513.833" A="-1.32737196E11" B="4.0968268E7" C="-3161.0066" Error="0.00168"/>
<QuasiParabolic ID="2" StartDistance="6513.833" EndDistance="6547.667" A="0.0" B="271.2613" C="-0.0016085029" Error="0.0045"/>
<QuasiParabolic ID="3" StartDistance="6547.667" EndDistance="6577.0" A="3.6116595E10" B="-1.1112283E7" C="854.7464" Error="0.0045"/>
<QuasiParabolic ID="4" StartDistance="6577.0" EndDistance="6580.0" A="-2.42916114E11" B="7.3738776E7" C="-5595.8433" Error="0.005"/>
<QuasiParabolic ID="5" StartDistance="6580.0" EndDistance="6585.0" A="7.1525896E12" B="-2.1741353E9" C="165215.25" Error="0.0177"/>
<QuasiParabolic ID="6" StartDistance="6585.0" EndDistance="6590.0" A="5.5057968E12" B="-1.67397043E9" C="127237.67" Error="0.0117"/>
<QuasiParabolic ID="7" StartDistance="6590.0" EndDistance="6597.0" A="1.1042773E13" B="-3.35438797E9" C="254735.2" Error="0.00273"/>
<QuasiParabolic ID="8" StartDistance="6597.0" EndDistance="6618.0" A="2.25777308E13" B="-6.8514196E9" C="519782.3" Error="0.0155"/>
<QuasiParabolic ID="9" StartDistance="6618.0" EndDistance="6628.0" A="-2.01507325E13" B="6.0613832E9" C="-455799.62" Error="0.00238"/>
<QuasiParabolic ID="10" StartDistance="6628.0" EndDistance="6637.967" A="-4.2163547E13" B="1.27037532E10" C="-956883.7" Error="0.00114"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="101.5" Depth="0.154"/>
<TopsideChapman PeakHeight="267.967" PeakDensity="213678.66" PeakScaleHeight="16.494" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
