<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-15 -105 06:45:00.000"
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 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" >
2026.04.15 (105) 06:45:00</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">
FF202610504150645001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.125" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.388" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="10.589" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.425" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="260.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="260.000" 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="0.025" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.875" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="296.077" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="277.099" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="250.188" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.098" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="38.439" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.065" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="20.766" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="34.990" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.020" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="28">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.45 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 2.85 2.875 2.9 2.925 2.95 2.975 3.0 3.025 3.05 3.075 3.1 3.125
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
260.000 262.500 265.000 265.000 267.500 267.500 267.500 270.000 272.500 275.000 277.500 280.000 282.500 285.000 287.308 289.888 292.789 296.077 299.834 304.167 309.221 315.191 322.353 331.102 342.030 356.070 374.769 400.909
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
81 72 69 72 72 75 75 72 72 66 69 69 69 66 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" >
-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="494">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 277.099 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0
</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 0.35313663 0.3524263 0.35157037 0.35049725 0.34921128 0.34779054 0.3460947 0.34420434 0.34212717 0.33980232 0.33724248 0.33452845 0.33153966 0.32836035 0.32488185 0.3211927 0.3171983 0.31299222 0.3084957 0.30364835 0.2985621 0.29312387 0.2873491 0.2811647 0.27462557 0.26766586 0.26023185 0.25232056 0.24386445 0.23482597 0.2251332 0.21472648 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 0.2044 0.2088 0.2132 0.2176 0.222 0.2264 0.2308 0.2352 0.2396 0.244 0.2484 0.2528 0.2572 0.2616 0.266 0.2704 0.2748 0.2792 0.2836 0.288 0.2924 0.2968 0.3012 0.3056 0.31 0.3144 0.3188 0.3232 0.3276 0.332 0.3364 0.3408 0.3452 0.3496 0.354 0.37785769 0.40400407 0.4322734 0.46242666 0.49421778 0.5274458 0.56193364 0.5975916 0.63435864 0.6722393 0.7112561 0.7514615 0.79293036 0.83576524 0.8800577 0.92593384 0.9735233 1.0229638 1.0743952 1.127971 1.1838343 1.2421261 1.3029771 1.3664765 1.4327136 1.501659 1.5732697 1.6473448 1.7235996 1.8015965 1.8807855 1.9605044 2.0400198 2.1185756 2.195467 2.2700584 2.3418732 2.4104877 2.4756851 2.5372915 2.595259 2.6495943 2.700373 2.7476654 2.7915964 2.8322747 2.8698392 2.904413 2.9361062 2.965027 2.9912922 3.0149832 3.0361888 3.0549874 3.0714478 3.0856237 3.097566 3.107318 3.1149135 3.1203804 3.1237345 3.1249902 3.125 3.1244307 3.1224916 3.119219 3.114657 3.108849 3.1018395 3.0936723 3.084391 3.07404 3.0626621 3.0503006 3.036998 3.0227962 3.0077367 2.9918602 2.9752069 2.957816 2.9397256 2.9209743 2.901598 2.8816333 2.8611147 2.840077 2.818553 2.796575 2.7741745 2.7513819 2.7282264 2.7047367 2.6809406 2.6568642 2.6325336 2.6079736 2.583208 2.5582597 2.5331511 2.5079033 2.4825368 2.457071 2.4315252 2.4059167 2.3802633 2.354581 2.3288858 2.3031929 2.2775161 2.2518694 2.2262657 2.2007174 2.175236 2.1498327 2.1245184 2.0993025 2.0741947 2.049204 2.0243387 1.9996067 1.9750155 1.9505721 1.9262829 1.9021542 1.8781916 1.8544006 1.830786 1.8073525 1.7841043 1.7610455 1.7381796 1.7155098 1.6930393 1.6707708 1.6487068 1.6268495 1.605201 1.583763 1.562537 1.5415243 1.5207262 1.5001435 1.4797771 1.4596274 1.439695 1.4199802 1.4004829 1.3812033 1.3621411 1.3432962 1.3246682 1.3062564 1.2880603 1.2700794 1.2523127 1.2347592 1.2174182 1.2002885 1.183369 1.1666585 1.1501558 1.1338596 1.1177684 1.101881 1.0861957 1.0707111 1.0554258 1.0403379 1.0254459 1.0107483 0.99624324 0.981929 0.96780396 0.95386624 0.94011414 0.92654586 0.91315955 0.8999534 0.88692564 0.87407434 0.8613977 0.8488938 0.8365609 0.824397 0.81240034 0.800569 0.7889011 0.7773948 0.7660482 0.75485957 0.74382687 0.7329484 0.72222227 0.7116466 0.7012197 0.6909396 0.6808046 0.67081285 0.6609626 0.651252 0.64167935 0.6322429 0.62294096 0.6137717 0.60473347 0.5958246 0.58704334 0.57838804 0.56985706 0.56144875 0.5531615 0.54499376 0.5369438 0.5290101 0.5211912 0.5134854 0.5058912 0.49840716 0.4910317 0.4837634 0.47660077 0.46954235 0.4625867 0.45573243 0.4489781 0.44232234 0.4357638 0.42930108 0.4229329 0.4166579 0.41047475 0.4043822 0.39837897 0.39246377 0.3866354 0.3808926 0.37523416 0.36965892 0.36416563 0.35875314 0.35342035 0.34816608 0.3429892 0.33788863 0.33286324 0.32791197 0.32303378 0.31822756 0.31349233 0.308827 0.30423066 0.29970223 0.29524073 0.29084522 0.28651476 0.28224835 0.27804512 0.2739041 0.26982442 0.26580516 0.26184544 0.25794443 0.25410125 0.25031504 0.246585 0.24291028 0.23929007 0.2357236 0.23221007 0.22874868 0.2253387 0.22197935 0.2186699 0.21540962 0.21219777 0.20903365 0.20591657 0.20284581 0.19982071 0.1968406 0.19390479 0.19101265 0.18816353 0.1853568 0.18259183 0.17986798 0.17718469 0.17454132 0.1719373 0.16937205 0.166845 0.16435556 0.1619032 0.15948735 0.15710749 0.15476307 0.15245357 0.15017848 0.14793728 0.14572948 0.14355457 0.14141208 0.13930151 0.1372224 0.13517426 0.13315666 0.13116914 0.12921125 0.12728253 0.12538259 0.12351096 0.121667236 0.11985101 0.11806186 0.1162994 0.11456322 0.11285294 0.11116816 0.109508514 0.10787362 0.10626311 0.10467663 0.103113815 0.10157431 0.10005777 0.098563865 0.09709225 0.09564258 0.09421455 0.09280782 0.09142209 0.09005703 0.08871234 0.087387726 0.08608287 0.084797494 0.08353129 0.082283996 0.081055306 0.07984496 0.07865268 0.07747819 0.07632124 0.07518155 0.074058875 0.072952956 0.07186355 0.070790395 0.06973327 0.068691924 0.06766612 0.06665563 0.06566023 0.06467968 0.06371378 0.06276229 0.061825015 0.060901728 0.059992224 0.059096303 0.058213755 0.057344384 0.056487992 0.05564439 0.05481338 0.053994782 0.053188402 0.052394066 0.051611587 0.050840795 0.05008151

</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="3.125" PeakHeight="277.099" Num="5" zHalfNm="250.188" Error="2.433">
-65.778 6.785 -4.895 2.472 -0.683
</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="6515.0" A="-1.24071371E11" B="3.8293632E7" C="-2954.6301" Error="0.00182"/>
<QuasiParabolic ID="2" StartDistance="6515.0" EndDistance="6550.0" A="0.0" B="1976.4612" C="-0.26333123" Error="0.0395"/>
<QuasiParabolic ID="3" StartDistance="6550.0" EndDistance="6572.0" A="-5.0079258E9" B="1428883.1" C="-101.38361" Error="0.0395"/>
<QuasiParabolic ID="4" StartDistance="6572.0" EndDistance="6584.0" A="1.6006298E11" B="-4.880572E7" C="3720.4822" Error="0.0312"/>
<QuasiParabolic ID="5" StartDistance="6584.0" EndDistance="6602.0" A="4.34187062E12" B="-1.31909965E9" C="100188.734" Error="0.0395"/>
<QuasiParabolic ID="6" StartDistance="6602.0" EndDistance="6603.0" A="1.11741722E13" B="-3.38886682E9" C="256941.78" Error="0.0"/>
<QuasiParabolic ID="7" StartDistance="6603.0" EndDistance="6621.0" A="1.37429747E13" B="-4.16693811E9" C="315859.78" Error="0.0149"/>
<QuasiParabolic ID="8" StartDistance="6621.0" EndDistance="6647.099" A="-1.3160799E13" B="3.95986227E9" C="-297854.2" Error="0.00307"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="105.0" Depth="0.154"/>
<TopsideChapman PeakHeight="277.099" PeakDensity="121161.6" PeakScaleHeight="20.766" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
