<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-04 -094 04:20:00.000"
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 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" >
2026.04.04 (094) 04:20:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.19" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.97" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202609404040420001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.650" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.366" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="15.650" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="6.325" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="317.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="317.500" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="4.650" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="345.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="291.041" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="267.870" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.408" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="33.776" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.988" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="17.025" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="35.310" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.690" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="29">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
3.95 3.975 4.0 4.025 4.05 4.075 4.1 4.125 4.15 4.175 4.2 4.225 4.25 4.275 4.3 4.325 4.35 4.375 4.4 4.425 4.45 4.475 4.5 4.525 4.55 4.575 4.6 4.625 4.65
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
317.500 317.500 318.750 320.000 320.833 321.667 322.500 322.500 322.500 325.000 325.000 327.500 327.500 327.500 330.000 330.000 332.500 332.500 332.500 335.000 336.250 337.500 337.500 337.500 340.000 340.000 342.500 342.500 345.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
93 72 0 84 0 0 87 87 87 99 99 84 87 87 87 87 87 75 75 51 0 72 75 99 96 75 72 96 93
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="477">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 147.12666 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 184.25333 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 221.38 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 291.041 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0
</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 0.34527335 0.34346452 0.341398 0.33915415 0.33674204 0.3341047 0.33132175 0.32827595 0.32498765 0.3215395 0.3178304 0.3138893 0.30969074 0.3052185 0.30051756 0.29546225 0.29019505 0.2846019 0.27861202 0.2723169 0.26564312 0.25849545 0.25095505 0.24294354 0.23434645 0.22518963 0.21539913 0.20490246 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 0.20309715 0.20724511 0.21139307 0.21554103 0.219689 0.22383696 0.22798492 0.23213288 0.23628084 0.2404288 0.24457677 0.24872473 0.25287268 0.25702065 0.2611686 0.26531658 0.26946452 0.2736125 0.27776045 0.28190842 0.28605637 0.29020435 0.2943523 0.29850027 0.30264822 0.3067962 0.31094417 0.31509212 0.3192401 0.32338804 0.32753602 0.33168396 0.33583194 0.3399799 0.34412786 0.3482758 0.3524238 0.354 0.38072053 0.4169976 0.45035052 0.48283187 0.515372 0.5485176 0.5826492 0.61808705 0.6550849 0.69387674 0.7346915 0.77771384 0.8231217 0.8710701 0.92168283 0.9750311 1.0311487 1.0900263 1.1515855 1.2156967 1.2822226 1.3509159 1.4215807 1.4939585 1.5678078 1.6428921 1.719015 1.7959838 1.8736095 1.9517719 2.0303273 2.1091943 2.1883037 2.2675605 2.3469193 2.4263585 2.5058396 2.5853262 2.6648118 2.7442667 2.8236818 2.9030344 2.9823244 3.0615146 3.1406043 3.219545 3.2983186 3.3768795 3.4551673 3.533126 3.6106849 3.687758 3.764196 3.8398871 3.914661 3.9883003 4.0605526 4.13113 4.199671 4.265747 4.3288703 4.388455 4.4438562 4.494329 4.5390806 4.577297 4.6081553 4.6309214 4.645 4.64999 4.65 4.6485763 4.644133 4.636785 4.626651 4.613849 4.5984993 4.5807195 4.560627 4.538338 4.513969 4.4876313 4.4594374 4.429496 4.397913 4.3647933 4.3302374 4.2943435 4.257208 4.2189226 4.179577 4.1392574 4.0980473 4.056026 4.013272 3.9698577 3.9258547 3.8813307 3.8363507 3.7909765 3.745267 3.6992786 3.6530647 3.606676 3.560161 3.5135653 3.4669318 3.4203014 3.3737128 3.3272023 3.2808037 3.2345495 3.18847 3.1425924 3.096944 3.0515494 3.006431 2.9616106 2.9171073 2.87294 2.8291256 2.7856793 2.7426155 2.6999474 2.6576865 2.6158442 2.5744298 2.5334523 2.4929194 2.452838 2.4132144 2.3740537 2.3353608 2.2971392 2.259392 2.2221222 2.1853316 2.1490214 2.1131926 2.0778456 2.0429802 2.0085962 1.9746925 1.9412678 1.9083207 1.8758489 1.8438505 1.8123227 1.7812629 1.7506679 1.7205346 1.6908593 1.6616386 1.6328685 1.6045451 1.5766643 1.5492219 1.5222133 1.4956342 1.46948 1.443746 1.4184275 1.3935196 1.3690177 1.3449167 1.3212117 1.2978977 1.2749697 1.2524228 1.2302518 1.2084519 1.1870177 1.1659445 1.1452271 1.1248605 1.1048398 1.0851598 1.0658157 1.0468025 1.0281154 1.0097494 0.99169964 0.9739614 0.95652986 0.93940026 0.92256796 0.9060283 0.88977665 0.87380844 0.85811925 0.84270453 0.8275599 0.81268096 0.7980634 0.783703 0.76959556 0.7557368 0.74212277 0.72874933 0.71561253 0.7027083 0.69003284 0.6775823 0.6653529 0.6533409 0.64154255 0.6299543 0.6185725 0.6073937 0.5964143 0.5856311 0.57504046 0.5646392 0.5544241 0.5443919 0.53453934 0.52486336 0.51536095 0.506029 0.49686456 0.4878647 0.47902656 0.4703473 0.4618241 0.45345423 0.445235 0.43716377 0.4292379 0.42145485 0.41381204 0.40630707 0.39893743 0.39170074 0.38459468 0.37761685 0.37076503 0.36403698 0.35743046 0.35094333 0.3445734 0.33831868 0.33217704 0.32614648 0.32022503 0.31441072 0.3087016 0.30309582 0.29759154 0.29218692 0.28688017 0.28166953 0.27655327 0.27152973 0.26659718 0.26175407 0.2569987 0.25232953 0.24774504 0.24324365 0.23882389 0.23448429 0.23022339 0.22603977 0.22193205 0.21789886 0.21393886 0.2100507 0.20623311 0.2024848 0.19880451 0.19519104 0.19164316 0.18815969 0.18473947 0.18138133 0.17808418 0.1748469 0.17166841 0.16854765 0.16548355 0.16247511 0.15952133 0.15662119 0.15377373 0.150978 0.14823306 0.14553799 0.14289188 0.14029385 0.13774303 0.13523856 0.13277958 0.13036531 0.1279949 0.12566757 0.12338254 0.12113903 0.1189363 0.1167736 0.11465021 0.11256541 0.110518515 0.10850882 0.10653565 0.10459835 0.10269627 0.10082877 0.09899521 0.09719498 0.09542748 0.09369212 0.091988295 0.09031545 0.088673025 0.08706046 0.08547721 0.083922744 0.08239654 0.080898084 0.07942688 0.07798242 0.07656422 0.07517181 0.07380472 0.072462484 0.07114466 0.069850795 0.068580456 0.067333214 0.06610866 0.064906366 0.06372593 0.06256697 0.06142908 0.060311884 0.059215 0.058138065 0.057080712 0.05604259 0.055023342 0.054022633 0.05304012 0.052075475 0.051128373 0.050198495

</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="4.65" PeakHeight="291.041" Num="5" zHalfNm="267.87" Error="1.978">
-65.953 -7.009 4.535 -2.384 1.15
</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="6517.127" A="-1.10340678E11" B="3.4055764E7" C="-2627.6343" Error="0.00178"/>
<QuasiParabolic ID="2" StartDistance="6517.127" EndDistance="6554.253" A="0.0" B="-1777.464" C="0.3127722" Error="0.0395"/>
<QuasiParabolic ID="3" StartDistance="6554.253" EndDistance="6591.0" A="4.9741287E10" B="-1.5233142E7" C="1166.3041" Error="0.0395"/>
<QuasiParabolic ID="4" StartDistance="6591.0" EndDistance="6592.0" A="3.31033786E13" B="-1.00451635E10" C="762047.1" Error="1.87E-9"/>
<QuasiParabolic ID="5" StartDistance="6592.0" EndDistance="6593.0" A="-1.43057937E13" B="4.338687E9" C="-328960.97" Error="4.02E-10"/>
<QuasiParabolic ID="6" StartDistance="6593.0" EndDistance="6604.0" A="3.9248045E12" B="-1.19160243E9" C="90445.14" Error="0.0239"/>
<QuasiParabolic ID="7" StartDistance="6604.0" EndDistance="6615.0" A="1.31473793E13" B="-3.98462925E9" C="301909.94" Error="0.016"/>
<QuasiParabolic ID="8" StartDistance="6615.0" EndDistance="6652.0" A="1.17189829E13" B="-3.55276339E9" C="269267.0" Error="0.034"/>
<QuasiParabolic ID="9" StartDistance="6652.0" EndDistance="6661.041" A="-7.1840047E13" B="2.1570218E10" C="-1619111.0" Error="0.00574"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="111.38" Depth="0.154"/>
<TopsideChapman PeakHeight="291.041" PeakDensity="268269.22" PeakScaleHeight="17.025" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
