<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-01 -091 09:40:00.000"
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" >
2026.04.01 (091) 09:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.18" 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">
FF202609104010940001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.554" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="12.262" 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="3.800" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="290.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="290.000" 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="0.075" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.425" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="311.096" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="1.175" 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="227.294" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="188.108" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.001" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="50.097" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.864" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="27.288" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="60.680" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.470" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="13">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
290.000 290.000 292.500 292.500 293.757 295.191 296.841 298.761 301.022 303.725 307.012 311.096 316.308
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 84 78 69 0 69 66 0 0 0 87 78 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 9.375 -3.125 3.125 3.125 3.125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="555">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
90.119 91.0 92.0 93.0 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 125.39367 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 140.78734 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 156.181 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 227.294 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0 608.0 609.0 610.0 611.0 612.0 613.0 614.0 615.0 616.0 617.0 618.0 619.0 620.0 621.0 622.0 623.0 624.0 625.0 626.0 627.0 628.0 629.0 630.0 631.0 632.0 633.0 634.0 635.0 636.0 637.0 638.0 639.0 640.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.3381508 0.5131669 0.62641454 0.71259975 0.78338224 0.8436642 0.89599663 0.9418898 0.98231846 1.0179582 1.049287 1.0766562 1.1003358 1.1205262 1.1373863 1.151037 1.1615676 1.1690446 1.1735133 1.175 1.1741617 1.1718534 1.1678239 1.1622589 1.1550969 1.1462499 1.1357179 1.1234425 1.1094488 1.0936252 1.0759261 1.0562254 1.0344844 1.0105271 0.9842508 0.973 0.973 0.973 0.973 0.973 0.973 0.973 0.973 0.973 0.973 0.973 0.973 0.973 0.973 0.973 0.973 0.973 0.9757907 0.98891294 1.0020353 1.0151575 1.0282798 1.0414021 1.0545243 1.0676466 1.080769 1.0938911 1.1070135 1.1201358 1.133258 1.1463803 1.1595026 1.1726248 1.175 1.2079173 1.2453532 1.2812221 1.316375 1.3513246 1.386422 1.4219322 1.4580461 1.4949225 1.5326676 1.5713589 1.6110324 1.6516778 1.6932429 1.7356501 1.7787468 1.8223668 1.866326 1.910421 1.9544452 1.9982146 2.0415616 2.084361 2.1265059 2.1679156 2.2085578 2.2483852 2.2874117 2.3256319 2.3630674 2.399729 2.435667 2.4708939 2.5054574 2.5393882 2.572715 2.6054847 2.6377196 2.6694493 2.7007139 2.7315378 2.7619488 2.7919703 2.8216305 2.8509462 2.879941 2.908637 2.9370492 2.9651911 2.9930727 3.0207138 3.048114 3.0752802 3.1022136 3.1289122 3.1553593 3.181543 3.207432 3.2329857 3.2581456 3.2828357 3.30694 3.330306 3.3527377 3.3739605 3.393613 3.4112444 3.4262958 3.4381392 3.446143 3.449799 3.45 3.4497757 3.4487004 3.446756 3.4439633 3.4403439 3.4359188 3.4307098 3.4247384 3.4180257 3.410593 3.402462 3.3936536 3.3841891 3.3740895 3.3633752 3.3520672 3.3401856 3.3277507 3.3147826 3.3013005 3.2873244 3.2728732 3.2579653 3.24262 3.226855 3.2106884 3.1941376 3.17722 3.1599526 3.142352 3.1244345 3.1062157 3.0877113 3.0689366 3.0499063 3.0306349 3.0111368 2.9914253 2.9715145 2.951417 2.9311457 2.9107132 2.8901315 2.8694122 2.848567 2.8276067 2.8065422 2.7853837 2.7641418 2.7428262 2.7214463 2.7000113 2.67853 2.6570113 2.6354632 2.6138942 2.5923119 2.5707238 2.549137 2.5275588 2.5059958 2.4844544 2.4629412 2.4414618 2.420022 2.3986278 2.377284 2.3559964 2.3347692 2.3136077 2.292516 2.2714987 2.2505596 2.2297032 2.2089326 2.1882522 2.1676648 2.147174 2.1267827 2.1064937 2.0863104 2.066235 2.0462704 2.0264184 2.006682 1.9870626 1.9675627 1.9481839 1.9289281 1.9097971 1.8907921 1.8719149 1.8531666 1.8345485 1.8160616 1.7977073 1.7794863 1.7613995 1.7434479 1.725632 1.7079524 1.6904098 1.6730046 1.6557374 1.6386085 1.621618 1.6047664 1.5880537 1.57148 1.5550456 1.5387503 1.5225941 1.5065769 1.4906987 1.4749591 1.4593581 1.4438953 1.4285706 1.4133835 1.3983335 1.3834205 1.3686439 1.3540033 1.3394982 1.325128 1.3108921 1.2967901 1.2828213 1.2689852 1.255281 1.241708 1.2282658 1.2149534 1.2017703 1.1887156 1.1757885 1.1629885 1.1503146 1.1377661 1.1253422 1.113042 1.1008648 1.0888097 1.0768758 1.0650623 1.0533684 1.0417932 1.0303358 1.0189953 1.0077709 0.9966616 0.9856666 0.974785 0.96401584 0.95335823 0.94281137 0.93237424 0.92204595 0.91182566 0.90171236 0.8917052 0.88180333 0.87200576 0.86231154 0.8527199 0.84322983 0.8338405 0.8245509 0.81536025 0.8062676 0.7972721 0.78837276 0.77956873 0.7708592 0.7622432 0.7537199 0.74528843 0.7369479 0.7286974 0.7205361 0.71246326 0.70447785 0.6965791 0.6887662 0.6810382 0.6733944 0.6658339 0.65835583 0.6509595 0.643644 0.6364085 0.6292523 0.62217456 0.6151744 0.6082512 0.601404 0.5946322 0.5879349 0.5813114 0.5747609 0.5682827 0.56187606 0.5555402 0.5492744 0.5430779 0.53695 0.53089 0.5248972 0.51897085 0.51311034 0.50731486 0.5015838 0.4959165 0.4903122 0.4847703 0.4792901 0.473871 0.4685123 0.46321335 0.45797354 0.45279223 0.4476688 0.4426026 0.43759304 0.4326395 0.42774138 0.4228981 0.41810903 0.41337362 0.4086913 0.4040614 0.39948347 0.3949569 0.39048108 0.38605553 0.38167965 0.37735295 0.37307486 0.36884484 0.3646624 0.36052698 0.35643807 0.35239518 0.3483978 0.34444544 0.34053755 0.3366737 0.33285338 0.3290761 0.32534143 0.32164887 0.3179979 0.31438816 0.31081912 0.30729038 0.30380145 0.30035192 0.29694134 0.29356927 0.29023528 0.28693897 0.2836799 0.28045768 0.27727187 0.2741221 0.2710079 0.26792896 0.26488483 0.26187512 0.25889948 0.2559575 0.25304884 0.2501731 0.2473299 0.2445189 0.24173974 0.23899204 0.23627546 0.23358965 0.23093428 0.22830899 0.22571346 0.22314733 0.22061029 0.21810201 0.21562217 0.21317044 0.21074651 0.20835006 0.2059808 0.2036384 0.20132259 0.19903304 0.19676945 0.19453156 0.19231905 0.19013166 0.18796909 0.18583106 0.1837173 0.18162753 0.17956148 0.1775189 0.1754995 0.17350303 0.17152923 0.16957784 0.16764861 0.1657413 0.16385564 0.16199142 0.16014835 0.15832622 0.1565248 0.15474385 0.15298313 0.1512424 0.14952147 0.14782009 0.14613804 0.1444751 0.14283107 0.14120571 0.13959883 0.13801022 0.13643967 0.13488697 0.1333519 0.1318343 0.13033396 0.12885065 0.12738423 0.12593447 0.1245012 0.123084225 0.12168336 0.12029842 0.11892924 0.117575616 0.116237395 0.11491439 0.11360643 0.112313345 0.111034974 0.10977113 0.10852167 0.10728642 0.10606522 0.104857914 0.10366434 0.10248434 0.10131776 0.10016446 0.09902427 0.09789706 0.09678267 0.09568096 0.09459178 0.093514994 0.09245046 0.09139804 0.090357594 0.08932898 0.088312075 0.08730674 0.086312845 0.085330255 0.08435885 0.0833985 0.08244907 0.081510454 0.080582514 0.07966513 0.078758195 0.07786158 0.07697516 0.07609883 0.075232476 0.07437599 0.073529236 0.072692126 0.071864545 0.07104638 0.070237525 0.069437884 0.06864733 0.06786579 0.067093134 0.06632928 0.06557412 0.06482755 0.06408948 0.063359804 0.06263844 0.06192529 0.06122025 0.060523238 0.059834164 0.05915293 0.05847945 0.057813637 0.057155404 0.056504663 0.055861328 0.05522532 0.05459655 0.053974938 0.0533604 0.05275286 0.052152235 0.051558446 0.05097142 0.050391074

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.175" PeakHeight="110.0" Num="3" Error="0.0">
-27.195 8.769 -1.455
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.175" EndFrequency="3.45" PeakHeight="227.294" Num="5" zHalfNm="188.108" Error="2.776">
-64.29 -11.682 7.549 -3.896 1.206
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="8" EarthRadius="6370.0">
<QuasiParabolic ID="0" StartDistance="6459.961" EndDistance="6480.001" A="-6.0244272E12" B="1.8593911E9" C="-143470.16" Error="0.0155"/>
<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6495.394" A="-3.25106663E12" B="1.00341562E9" C="-77422.664" Error="0.00104"/>
<QuasiParabolic ID="2" StartDistance="6495.394" EndDistance="6510.787" A="0.0" B="-25464.547" C="4.866147" Error="0.00875"/>
<QuasiParabolic ID="3" StartDistance="6510.787" EndDistance="6525.0" A="8.5336765E11" B="-2.6300928E8" C="20265.705" Error="0.011"/>
<QuasiParabolic ID="4" StartDistance="6525.0" EndDistance="6527.0" A="2.2011894E13" B="-6.7483817E9" C="517229.1" Error="0.00902"/>
<QuasiParabolic ID="5" StartDistance="6527.0" EndDistance="6551.0" A="3.93167687E12" B="-1.2082505E9" C="92828.06" Error="0.0108"/>
<QuasiParabolic ID="6" StartDistance="6551.0" EndDistance="6592.0" A="-7.5330624E11" B="2.22060352E8" C="-16339.302" Error="0.00733"/>
<QuasiParabolic ID="7" StartDistance="6592.0" EndDistance="6597.294" A="-2.66624565E13" B="8.0828462E9" C="-612576.06" Error="8.65E-4"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="46.181" Depth="0.202"/>
<TopsideChapman PeakHeight="227.294" PeakDensity="147673.7" PeakScaleHeight="27.288" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
