<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-15 -105 02:20:00.000"
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: 70% PACIFIC flags: F2 cusps do not match</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.15 (105) 02:20:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.19" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.98" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202610504150220001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.825" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.391" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="9.580" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.475" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.475" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="292.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="292.500" 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="2.725" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="320.867" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.475" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.475" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="280.126" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="255.931" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.818" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="34.542" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.784" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="18.280" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="34.480" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.140" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="15">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.475 2.5 2.525 2.55 2.575 2.6 2.625 2.65 2.675 2.7 2.725 2.75 2.775 2.8 2.825
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
292.500 295.000 295.000 297.500 299.203 301.208 303.605 306.520 310.143 314.765 320.867 329.297 341.696 361.737 399.626
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 72 72 75 78 75 72 78 78 75 75 69 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 7.8125 -1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="457">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 147.17667 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 184.35333 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 221.53 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 280.126 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0
</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 0.35362422 0.35321164 0.35265058 0.35186794 0.35086685 0.3497987 0.34844553 0.34695965 0.3453451 0.3434644 0.34146795 0.33922297 0.3368097 0.33417103 0.33138672 0.32833943 0.32504946 0.3215996 0.31788868 0.3140032 0.30980045 0.30537733 0.3006693 0.29570466 0.29042408 0.28481674 0.27889445 0.27253821 0.26591486 0.25880197 0.25130817 0.24326621 0.23477353 0.22563869 0.21589899 0.20549633 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 0.2 0.2 0.2 0.20267874 0.20682113 0.2109635 0.21510589 0.21924828 0.22339065 0.22753304 0.23167542 0.2358178 0.2399602 0.24410257 0.24824496 0.25238734 0.25652972 0.2606721 0.2648145 0.26895687 0.27309924 0.27724165 0.28138402 0.2855264 0.2896688 0.29381117 0.29795355 0.30209595 0.30623832 0.3103807 0.3145231 0.31866547 0.32280785 0.32695025 0.33109263 0.335235 0.33937737 0.34351978 0.34766215 0.35180452 0.354 0.3660937 0.39283136 0.420939 0.45040926 0.48125294 0.5134752 0.5470929 0.5821117 0.61855143 0.6564192 0.6957383 0.7365213 0.77877784 0.8225211 0.86773545 0.9144376 0.9626127 1.0122302 1.063271 1.1156974 1.1694521 1.2244784 1.2806978 1.3380059 1.3963186 1.4555054 1.5154375 1.575964 1.6369139 1.6981348 1.7594421 1.8206414 1.8815441 1.9419497 2.001661 2.0604818 2.1182148 2.1746726 2.229677 2.283036 2.3345976 2.3841946 2.431688 2.476939 2.51982 2.5602167 2.5980296 2.6331613 2.6655304 2.6950612 2.721689 2.7453601 2.7660213 2.7836313 2.7981598 2.8095765 2.8178606 2.8229964 2.824975 2.825 2.8243756 2.822163 2.8184063 2.8131638 2.8064938 2.7984543 2.789104 2.7785006 2.7667015 2.753764 2.739744 2.7246969 2.7086773 2.6917386 2.6739328 2.6553113 2.635924 2.6158192 2.5950444 2.5736454 2.5516667 2.5291512 2.5061412 2.4826763 2.4587958 2.4345367 2.4099355 2.3850265 2.359843 2.3344169 2.3087788 2.2829578 2.2569816 2.2308774 2.2046704 2.1783848 2.1520433 2.1256683 2.0992804 2.072899 2.0465436 2.020231 1.9939783 1.9678011 1.9417143 1.9157319 1.889867 1.8641318 1.838538 1.8130962 1.7878165 1.7627084 1.7377805 1.7130408 1.688497 1.6641556 1.6400234 1.6161059 1.5924085 1.5689361 1.545693 1.5226831 1.4999102 1.4773772 1.4550868 1.4330417 1.4112438 1.3896949 1.3683965 1.3473498 1.3265555 1.3060147 1.2857274 1.265694 1.2459146 1.2263888 1.2071164 1.1880965 1.1693288 1.1508121 1.1325455 1.1145278 1.0967578 1.079234 1.0619549 1.0449189 1.0281242 1.0115693 0.995252 0.9791705 0.9633228 0.9477068 0.9323204 0.91716146 0.90222764 0.88751674 0.8730265 0.85875446 0.8446984 0.8308559 0.8172245 0.80380183 0.79058546 0.7775729 0.7647616 0.75214934 0.7397334 0.7275114 0.7154809 0.70363945 0.6919845 0.68051356 0.66922426 0.65811414 0.6471808 0.6364217 0.6258345 0.6154169 0.6051664 0.5950806 0.5851572 0.575394 0.56578845 0.5563384 0.54704165 0.5378958 0.52889866 0.5200481 0.5113418 0.5027777 0.4943536 0.48606744 0.47791708 0.46990046 0.46201554 0.4542603 0.4466327 0.43913084 0.43175268 0.42449635 0.41735995 0.41034156 0.40343934 0.39665148 0.38997617 0.3834116 0.37695605 0.37060773 0.36436498 0.35822612 0.35218945 0.34625334 0.34041616 0.33467636 0.32903233 0.32348254 0.31802544 0.31265956 0.3073834 0.3021955 0.29709443 0.29207876 0.2871471 0.2822981 0.27753037 0.2728426 0.26823348 0.26370168 0.259246 0.2548651 0.2505578 0.2463229 0.24215916 0.23806544 0.23404056 0.23008338 0.22619279 0.22236769 0.21860696 0.21490958 0.21127446 0.20770058 0.20418692 0.20073247 0.19733624 0.19399728 0.19071461 0.18748732 0.18431444 0.18119511 0.17812842 0.17511347 0.1721494 0.1692354 0.16637056 0.1635541 0.16078523 0.1580631 0.15538695 0.15275602 0.15016955 0.14762677 0.14512697 0.14266941 0.1402534 0.13787821 0.1355432 0.13324764 0.13099092 0.12877235 0.1265913 0.12444714 0.122339234 0.120267 0.11822981 0.11622708 0.114258245 0.11232272 0.11041994 0.10854936 0.106710434 0.10490263 0.10312542 0.10137829 0.09966073 0.09797225 0.096312344 0.09468055 0.09307636 0.09149934 0.08994903 0.08842495 0.086926684 0.085453786 0.08400583 0.08258239 0.08118306 0.07980742 0.07845508 0.077125646 0.075818725 0.07453394 0.07327091 0.07202928 0.07080867 0.06960874 0.06842914 0.06726952 0.066129535 0.06500887 0.06390718 0.06282417 0.06175949 0.06071285 0.05968395 0.058672473 0.057678133 0.056700643 0.055739712 0.05479506 0.053866416 0.052953504 0.052056063 0.051173825 0.050306536

</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="2.825" PeakHeight="280.126" Num="5" zHalfNm="255.931" Error="0.849">
-59.067 0.842 -0.628 0.323 -0.066
</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="6517.177" A="-1.10045766E11" B="3.3964744E7" C="-2620.611" Error="0.00177"/>
<QuasiParabolic ID="2" StartDistance="6517.177" EndDistance="6554.353" A="0.0" B="-648.239" C="0.1395011" Error="0.015"/>
<QuasiParabolic ID="3" StartDistance="6554.353" EndDistance="6589.0" A="3.9866622E10" B="-1.2229432E7" C="937.8856" Error="0.015"/>
<QuasiParabolic ID="4" StartDistance="6589.0" EndDistance="6590.0" A="-1.47534014E12" B="4.47690656E8" C="-33962.715" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6590.0" EndDistance="6593.0" A="6.2831702E12" B="-1.9069408E9" C="144689.14" Error="0.0169"/>
<QuasiParabolic ID="6" StartDistance="6593.0" EndDistance="6594.0" A="2.18075156E12" B="-6.6246362E8" C="50310.47" Error="4.71E-11"/>
<QuasiParabolic ID="7" StartDistance="6594.0" EndDistance="6603.0" A="3.54531148E12" B="-1.07634291E9" C="81693.484" Error="0.00889"/>
<QuasiParabolic ID="8" StartDistance="6603.0" EndDistance="6625.0" A="7.850613E12" B="-2.38038682E9" C="180439.81" Error="0.0165"/>
<QuasiParabolic ID="9" StartDistance="6625.0" EndDistance="6637.0" A="-1.16310278E12" B="3.40734784E8" C="-24927.855" Error="0.009"/>
<QuasiParabolic ID="10" StartDistance="6637.0" EndDistance="6650.126" A="-1.64021058E13" B="4.9328707E9" C="-370877.5" Error="0.00377"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="111.53" Depth="0.154"/>
<TopsideChapman PeakHeight="280.126" PeakDensity="99015.195" PeakScaleHeight="18.28" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
