<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-15 -105 03:15:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 60% PACIFIC flags: F2x cusp not found, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, 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) 03:15:00</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">
FF202610504150315001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.275" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.537" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.582" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.225" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.225" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="252.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="252.500" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.175" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="299.636" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.225" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.225" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="262.255" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="240.181" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.592" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="31.587" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.959" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="16.900" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="30.180" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.550" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="43">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.225 2.25 2.275 2.3 2.325 2.35 2.375 2.4 2.425 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 3.15 3.175 3.2 3.225 3.25 3.275
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
252.500 253.333 254.167 255.000 255.833 256.667 257.500 257.500 262.500 262.500 262.500 262.500 262.500 262.500 262.500 262.500 262.500 262.500 265.000 265.000 265.000 265.000 266.364 267.727 269.091 270.455 271.818 273.182 274.545 275.909 277.273 278.636 280.000 284.167 288.333 292.500 294.302 296.601 299.636 303.830 310.000 319.976 338.849
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 0 0 0 0 0 72 72 84 84 0 0 0 72 0 0 75 78 72 75 0 75 0 0 0 0 0 0 0 0 0 0 84 0 0 93 90 96 93 0 84 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 4.6875 -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="427">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 143.25 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 176.5 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 209.75 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 262.255 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0
</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 0.35354906 0.35306174 0.352277 0.35134757 0.35012823 0.34869877 0.34706512 0.34523398 0.343142 0.34080055 0.3382224 0.33542153 0.33234677 0.3290187 0.32545936 0.32156938 0.31744388 0.31299958 0.30822688 0.30312735 0.29771414 0.29194102 0.28570086 0.27913103 0.27213752 0.26456448 0.256557 0.2479685 0.23874018 0.22879031 0.21807829 0.20660281 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 0.20231579 0.20694737 0.21157895 0.21621053 0.22084211 0.22547369 0.23010527 0.23473684 0.23936842 0.244 0.24863158 0.25326315 0.25789472 0.2625263 0.26715788 0.27178946 0.27642104 0.28105262 0.2856842 0.29031578 0.29494736 0.29957893 0.3042105 0.3088421 0.31347367 0.31810525 0.32273683 0.3273684 0.332 0.33663157 0.34126315 0.34589472 0.3505263 0.354 0.36111462 0.39198261 0.42658183 0.46458516 0.5055282 0.5489385 0.5944554 0.64182997 0.6909287 0.74169457 0.7941786 0.8484428 0.9045747 0.9627177 1.0229981 1.0855641 1.150543 1.2180749 1.2882702 1.3612083 1.436944 1.5154462 1.5966635 1.6803933 1.7663574 1.8541675 1.9433163 2.0331912 2.1231017 2.2123206 2.3001096 2.3857486 2.4686546 2.5482607 2.6241882 2.6960955 2.763777 2.8271027 2.8860285 2.940514 2.9906135 3.0363767 3.0778706 3.1151814 3.1483858 3.177578 3.2028315 3.224208 3.2417824 3.2555974 3.2657013 3.2721226 3.2748814 3.275 3.2743843 3.2716641 3.266851 3.2600298 3.2512863 3.2407062 3.2283745 3.2143764 3.1987956 3.1817153 3.1632168 3.1433809 3.122286 3.100009 3.076625 3.0522072 3.0268266 3.000552 2.9734504 2.945586 2.9170215 2.887817 2.8580298 2.8277159 2.7969286 2.7657187 2.7341356 2.7022254 2.6700332 2.6376016 2.6049705 2.5721788 2.5392632 2.506258 2.4731963 2.4401088 2.4070249 2.3739724 2.3409774 2.3080645 2.2752562 2.2425742 2.2100391 2.1776693 2.1454828 2.1134956 2.081723 2.050179 2.018877 1.9878286 1.9570452 1.9265367 1.8963125 1.8663809 1.8367497 1.8074255 1.7784148 1.7497231 1.721355 1.693315 1.6656067 1.6382333 1.6111975 1.5845013 1.5581466 1.5321347 1.5064664 1.4811424 1.4561627 1.4315273 1.4072356 1.3832871 1.3596807 1.336415 1.3134887 1.2909001 1.2686472 1.2467281 1.2251403 1.2038816 1.1829494 1.1623411 1.1420537 1.1220845 1.1024305 1.0830883 1.064055 1.0453273 1.0269018 1.0087752 0.990944 0.9734048 0.95615405 0.9391882 0.9225037 0.906097 0.8899644 0.87410235 0.85850716 0.8431753 0.82810307 0.8132869 0.7987231 0.7844081 0.7703383 0.7565101 0.7429199 0.7295643 0.71643966 0.7035425 0.69086933 0.6784167 0.66618127 0.6541596 0.6423483 0.63074404 0.6193436 0.6081436 0.59714097 0.58633244 0.5757148 0.565285 0.55503994 0.5449766 0.53509194 0.525383 0.51584685 0.5064806 0.49728137 0.4882464 0.47937286 0.47065806 0.46209925 0.4536938 0.44543907 0.43733248 0.42937148 0.42155358 0.4138763 0.40633717 0.39893383 0.39166388 0.38452506 0.37751502 0.37063155 0.36387238 0.35723537 0.35071838 0.34431928 0.338036 0.33186647 0.3258087 0.3198607 0.31402054 0.3082863 0.30265608 0.29712805 0.2917004 0.28637132 0.28113905 0.27600184 0.27095804 0.26600596 0.26114392 0.25637037 0.25168368 0.2470823 0.2425647 0.23812935 0.2337748 0.2294996 0.22530228 0.22118147 0.21713579 0.21316385 0.20926437 0.205436 0.20167747 0.19798751 0.19436489 0.19080839 0.1873168 0.18388896 0.1805237 0.17721988 0.1739764 0.17079216 0.16766609 0.16459712 0.16158424 0.1586264 0.15572262 0.15287189 0.15007329 0.14732583 0.1446286 0.14198068 0.13938117 0.1368292 0.13432388 0.13186438 0.12944987 0.12707952 0.12475253 0.1224681 0.12022546 0.11802384 0.11586251 0.11374072 0.111657746 0.1096129 0.10760546 0.10563476 0.103700124 0.101800896 0.099936426 0.09810608 0.09630923 0.094545275 0.09281361 0.09111364 0.08944479 0.08780649 0.08619818 0.08461932 0.08306936 0.08154778 0.08005406 0.07858768 0.07714816 0.075734995 0.0743477 0.07298581 0.07164886 0.070336394 0.06904796 0.06778312 0.06654143 0.065322496 0.06412588 0.06295118 0.061797988 0.060665917 0.05955458 0.0584636 0.057392597 0.056341212 0.05530908 0.054295853 0.053301185 0.05232474 0.051366173 0.050425164

</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="3.275" PeakHeight="262.255" Num="5" zHalfNm="240.181" Error="0.592">
-54.886 3.93 -2.476 1.4 -0.473
</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="6513.25" A="-1.37420415E11" B="4.2413708E7" C="-3272.5374" Error="0.00164"/>
<QuasiParabolic ID="2" StartDistance="6513.25" EndDistance="6546.5" A="0.0" B="6166.07" C="-0.9066685" Error="0.12"/>
<QuasiParabolic ID="3" StartDistance="6546.5" EndDistance="6578.0" A="-3.8061859E10" B="1.1487606E7" C="-866.61554" Error="0.12"/>
<QuasiParabolic ID="4" StartDistance="6578.0" EndDistance="6589.0" A="6.3662735E12" B="-1.93571072E9" C="147141.77" Error="0.0366"/>
<QuasiParabolic ID="5" StartDistance="6589.0" EndDistance="6595.0" A="9.0987183E12" B="-2.76510669E9" C="210079.7" Error="0.00532"/>
<QuasiParabolic ID="6" StartDistance="6595.0" EndDistance="6613.0" A="1.66691235E13" B="-5.060908E9" C="384135.9" Error="0.0249"/>
<QuasiParabolic ID="7" StartDistance="6613.0" EndDistance="6632.255" A="-2.23092534E13" B="6.7275018E9" C="-507169.84" Error="0.0104"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="99.75" Depth="0.154"/>
<TopsideChapman PeakHeight="262.255" PeakDensity="133072.27" PeakScaleHeight="16.9" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
