<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-13 -103 07:15:00.000"
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" >
2026.04.13 (103) 07:15:00</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">
FF202610304130715001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.525" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="10.047" 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="3.200" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="262.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="262.500" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.675" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="286.116" 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="262.745" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="241.951" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.892" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="29.681" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.689" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="15.862" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="28.610" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.440" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="17">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
262.500 265.000 266.250 267.500 270.000 272.500 275.000 278.179 281.844 286.116 291.159 297.202 304.576 313.774 325.569 341.243 363.083
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
81 72 0 72 72 72 72 69 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 -7.8125 10.9375 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="405">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 144.695 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 179.39 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 214.085 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 262.745 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0
</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 0.35149595 0.35042334 0.349138 0.34764516 0.345951 0.3439912 0.3419171 0.3395264 0.3369716 0.33419606 0.33114913 0.32785118 0.32432404 0.32059067 0.31655726 0.31220344 0.30762872 0.302715 0.29747394 0.29190537 0.28602666 0.27968386 0.27303058 0.26586303 0.25827333 0.250164 0.24149308 0.23213282 0.22218546 0.2114827 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 0.20270759 0.20714627 0.21158496 0.21602364 0.2204623 0.22490099 0.22933967 0.23377836 0.23821704 0.24265571 0.2470944 0.25153306 0.25597176 0.26041043 0.26484913 0.2692878 0.27372646 0.27816516 0.28260383 0.2870425 0.2914812 0.29591987 0.30035856 0.30479723 0.3092359 0.3136746 0.31811327 0.32255197 0.32699063 0.3314293 0.335868 0.34030667 0.34474534 0.34918404 0.3536227 0.354 0.38368323 0.41801393 0.45416754 0.49206397 0.5316771 0.5730126 0.61612993 0.6610896 0.7080084 0.7569775 0.8081246 0.8615581 0.9174163 0.9757895 1.0367894 1.1004798 1.1669117 1.2360474 1.307835 1.3821006 1.4586358 1.5370826 1.6170365 1.6979535 1.779238 1.8602934 1.9404231 2.0190341 2.0955298 2.1693926 2.2401993 2.307594 2.3713229 2.4311793 2.4870596 2.5388734 2.5865943 2.6302273 2.669778 2.7052858 2.7368007 2.7643542 2.788003 2.8077896 2.8237474 2.8359122 2.8443112 2.848964 2.85 2.8499284 2.8482866 2.8445432 2.8387873 2.8311093 2.8215988 2.8103456 2.7974396 2.782969 2.767021 2.7496817 2.731035 2.7111635 2.6901476 2.6680658 2.6449938 2.6210058 2.5961726 2.5705633 2.5442443 2.5172794 2.4897301 2.461655 2.4331102 2.4041498 2.374825 2.3451848 2.3152754 2.2851415 2.2548246 2.2243643 2.1937985 2.1631627 2.13249 2.1018121 2.0711584 2.040557 2.0100334 1.9796125 1.9493166 1.9191672 1.8891836 1.8593845 1.8297865 1.8004056 1.7712559 1.7423506 1.7137021 1.6853213 1.6572183 1.6294024 1.6018816 1.5746634 1.5477543 1.5211602 1.4948863 1.4689368 1.4433156 1.4180261 1.3930707 1.3684515 1.3441703 1.3202282 1.296626 1.273364 1.250442 1.2278599 1.2056167 1.1837115 1.1621431 1.1409098 1.1200099 1.0994414 1.0792019 1.0592892 1.0397006 1.0204334 1.0014848 0.98285156 0.96453077 0.9465191 0.9288133 0.9114099 0.8943054 0.8774963 0.86097896 0.84474975 0.82880497 0.8131408 0.79775363 0.78263956 0.7677948 0.75321555 0.73889804 0.7248384 0.7110328 0.6974775 0.68416864 0.6711024 0.6582751 0.64568293 0.6333222 0.6211891 0.6092801 0.59759146 0.58611953 0.5748608 0.5638117 0.5529687 0.5423283 0.5318871 0.5216416 0.5115886 0.50172454 0.49204636 0.48255068 0.47323433 0.46409416 0.45512706 0.44632992 0.43769974 0.4292335 0.42092827 0.41278115 0.40478927 0.39694983 0.38926002 0.38171715 0.3743185 0.36706144 0.35994336 0.3529617 0.34611392 0.33939758 0.3328102 0.3263494 0.3200128 0.31379813 0.30770308 0.3017254 0.29586288 0.2901134 0.28447476 0.27894497 0.27352187 0.26820353 0.2629879 0.25787312 0.25285718 0.24793826 0.2431145 0.23838408 0.23374526 0.22919625 0.22473536 0.22036089 0.21607122 0.2118647 0.20773973 0.20369478 0.19972828 0.19583875 0.19202471 0.18828471 0.18461731 0.18102114 0.17749481 0.17403698 0.17064632 0.16732156 0.16406141 0.16086464 0.15773001 0.15465632 0.15164241 0.14868711 0.14578928 0.14294784 0.14016166 0.1374297 0.1347509 0.13212423 0.12954868 0.12702326 0.124547005 0.12211895 0.11973818 0.11740375 0.115114786 0.112870395 0.11066971 0.10851189 0.106396094 0.10432151 0.102287345 0.1002928 0.09833712 0.096419536 0.09453932 0.092695735 0.090888076 0.08911564 0.08737775 0.08567372 0.084002905 0.082364656 0.08075833 0.079183325 0.07763901 0.0761248 0.07464011 0.073184356 0.07175699 0.07035744 0.06898519 0.06763968 0.066320404 0.06502685 0.063758515 0.062514916 0.061295558 0.06009998 0.058927715 0.057778306 0.05665131 0.05554629 0.05446282 0.05340048 0.05235885 0.05133754 0.050336145

</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="2.85" PeakHeight="262.745" Num="5" zHalfNm="241.951" Error="1.756">
-50.303 2.892 -2.039 0.991 -0.201
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="8" 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="6514.695" A="-1.26258029E11" B="3.8968528E7" C="-3006.7056" Error="0.00169"/>
<QuasiParabolic ID="2" StartDistance="6514.695" EndDistance="6549.39" A="0.0" B="-1562.5216" C="0.27988026" Error="0.0326"/>
<QuasiParabolic ID="3" StartDistance="6549.39" EndDistance="6580.0" A="5.7803293E10" B="-1.771121E7" C="1356.7262" Error="0.0326"/>
<QuasiParabolic ID="4" StartDistance="6580.0" EndDistance="6582.0" A="-1.18842943E12" B="3.61082944E8" C="-27427.023" Error="0.00251"/>
<QuasiParabolic ID="5" StartDistance="6582.0" EndDistance="6597.0" A="6.0668453E12" B="-1.84349773E9" C="140043.4" Error="0.0499"/>
<QuasiParabolic ID="6" StartDistance="6597.0" EndDistance="6615.0" A="1.38721383E13" B="-4.2098135E9" C="319391.25" Error="0.034"/>
<QuasiParabolic ID="7" StartDistance="6615.0" EndDistance="6632.745" A="-1.93693567E13" B="5.8405253E9" C="-440271.53" Error="0.0128"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="104.085" Depth="0.154"/>
<TopsideChapman PeakHeight="262.745" PeakDensity="100775.44" PeakScaleHeight="15.862" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
