<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-16 -106 04:45:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 45% PACIFIC flags: F2x cusp not found, One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.16 (106) 04:45:00</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">
FF202610604160445001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="28" >
<URSI ID="00" Val="2.625" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.508" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="9.208" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.025" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="2.700" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.400" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="2.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="285.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="285.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="34" Val="95.000" Name="h`Es" 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="0.125" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.500" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="295.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.400" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.400" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="268.764" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="249.134" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.387" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="2.025" Description="Minimum frequency of Es-layer" Units="MHz" />
<URSI ID="94" Val="27.951" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.554" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="14.737" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="28.270" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.040" Name="B1" QL="/" DL="/" />
<URSI ID="32" Val="2.400" Name="fbEs" Units="MHz" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="10">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.4 2.425 2.45 2.475 2.5 2.525 2.55 2.575 2.6 2.625
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
285.000 287.500 290.000 292.500 295.000 301.250 307.500 312.500 317.500 323.852
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 0 0 66 66 0 63 0 66 63
</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
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="Es" Polarization="O" Num="28">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.025 2.05 2.075 2.1 2.125 2.15 2.175 2.2 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
102.500 97.500 97.500 97.500 98.750 100.000 100.000 100.000 100.000 100.000 102.500 95.000 102.500 100.000 100.000 100.000 100.000 97.500 95.000 97.500 100.000 100.833 101.667 102.500 102.500 102.500 102.500 102.500
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 81 0 63 0 81 63 63 0 69 51 57 51 54 0 63 84 84 69 69 63 0 0 63 63 0 0 66
</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="391">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 147.12967 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 184.25934 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 221.389 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 268.764 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0
</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 0.2955113 0.29024142 0.28455725 0.27865312 0.2723163 0.26564258 0.25855908 0.25098187 0.24296616 0.23436454 0.2252029 0.21540724 0.20496522 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 0.20307201 0.20721963 0.21136726 0.21551488 0.21966252 0.22381014 0.22795777 0.23210539 0.23625302 0.24040066 0.24454828 0.24869591 0.25284353 0.25699115 0.2611388 0.26528642 0.26943403 0.27358165 0.2777293 0.28187692 0.28602454 0.29017216 0.2943198 0.29846743 0.30261505 0.30676267 0.3109103 0.31505793 0.31920555 0.32335317 0.32750082 0.33164844 0.33579606 0.3399437 0.34409133 0.34823895 0.35238656 0.354 0.37316296 0.4056678 0.43975648 0.47559312 0.51331824 0.55303955 0.5948354 0.63876975 0.684875 0.7331442 0.78357565 0.8361047 0.8906428 0.9471174 1.0053886 1.0653183 1.1267551 1.1895211 1.2534469 1.3183244 1.3839812 1.450183 1.5167613 1.5834727 1.6501256 1.7164997 1.782361 1.8474721 1.9116334 1.974582 2.0360947 2.0959053 2.1537912 2.2094712 2.2627056 2.3132331 2.3607955 2.4051495 2.4460359 2.4832292 2.5165 2.5456314 2.5704486 2.5907722 2.6064718 2.617432 2.6235783 2.625 2.6249344 2.6232285 2.619287 2.6132128 2.6051092 2.5950797 2.5832274 2.5696542 2.5544615 2.5377486 2.5196126 2.500149 2.4794505 2.4576075 2.4347074 2.4108348 2.3860714 2.3604956 2.334183 2.3072057 2.2796333 2.2515318 2.222964 2.1939902 2.1646671 2.1350486 2.1051862 2.0751278 2.044919 2.014603 1.9842194 1.9538068 1.9234003 1.893033 1.8627359 1.8325378 1.8024653 1.7725434 1.7427952 1.7132417 1.6839025 1.6547955 1.6259372 1.5973425 1.5690252 1.5409975 1.5132706 1.4858545 1.4587581 1.4319894 1.4055551 1.3794615 1.3537136 1.328316 1.3032722 1.2785854 1.2542577 1.2302911 1.2066866 1.1834449 1.1605662 1.1380502 1.1158963 1.0941035 1.0726701 1.0515946 1.030875 1.0105087 0.99049336 0.97082615 0.951504 0.9325238 0.91388214 0.89557546 0.87760013 0.85995245 0.8426284 0.82562417 0.8089355 0.7925584 0.77648854 0.7607218 0.7452538 0.7300802 0.7151967 0.70059896 0.6862826 0.67224306 0.6584762 0.64497745 0.63174254 0.6187671 0.60604674 0.5935772 0.58135426 0.56937355 0.55763096 0.5461222 0.5348432 0.5237898 0.51295805 0.5023438 0.49194315 0.4817522 0.47176698 0.46198377 0.45239872 0.44300815 0.4338084 0.42479578 0.41596675 0.40731785 0.39884555 0.39054647 0.38241723 0.3744546 0.36665523 0.359016 0.35153374 0.34420535 0.33702782 0.32999814 0.32311338 0.31637067 0.3097672 0.3033001 0.29696673 0.29076436 0.28469038 0.2787422 0.27291724 0.26721308 0.26162723 0.2561573 0.25080094 0.24555585 0.24041975 0.23539041 0.23046568 0.2256434 0.22092147 0.21629786 0.21177053 0.20733751 0.20299688 0.19874673 0.19458517 0.19051042 0.18652068 0.18261418 0.17878921 0.17504409 0.17137717 0.16778682 0.16427147 0.16082956 0.15745957 0.15416002 0.15092944 0.14776638 0.14466947 0.14163733 0.1386686 0.13576196 0.13291614 0.13012986 0.12740189 0.124731 0.122116014 0.11955577 0.11704912 0.11459495 0.11219217 0.1098397 0.107536495 0.105281524 0.10307379 0.100912295 0.098796085 0.0967242 0.094695725 0.09270976 0.090765394 0.08886178 0.08699805 0.08517338 0.08338696 0.08163797 0.07992564 0.07824921 0.07660791 0.07500102 0.07342782 0.07188759 0.07037966 0.06890334 0.067457974 0.066042915 0.06465752 0.063301176 0.061973274 0.06067322 0.05940042 0.058154315 0.05693434 0.055739954 0.05457061 0.053425793 0.052304987 0.051207684 0.050133396

</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="2.625" PeakHeight="268.764" Num="5" zHalfNm="249.134" Error="0.411">
-47.196 -0.321 0.209 -0.136 0.069
</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="6517.13" A="-1.10322901E11" B="3.405028E7" C="-2627.211" Error="0.00179"/>
<QuasiParabolic ID="2" StartDistance="6517.13" EndDistance="6554.259" A="0.0" B="-282.86255" C="0.08343784" Error="0.00702"/>
<QuasiParabolic ID="3" StartDistance="6554.259" EndDistance="6590.0" A="3.42651023E10" B="-1.0524449E7" C="808.1461" Error="0.00702"/>
<QuasiParabolic ID="4" StartDistance="6590.0" EndDistance="6592.0" A="7.3396231E12" B="-2.22762854E9" C="169025.45" Error="0.0252"/>
<QuasiParabolic ID="5" StartDistance="6592.0" EndDistance="6601.0" A="5.3865685E12" B="-1.63507558E9" C="124080.6" Error="0.0187"/>
<QuasiParabolic ID="6" StartDistance="6601.0" EndDistance="6605.0" A="1.02757921E13" B="-3.11643418E9" C="236287.73" Error="0.00236"/>
<QuasiParabolic ID="7" StartDistance="6605.0" EndDistance="6626.0" A="7.8481426E12" B="-2.38133965E9" C="180640.9" Error="0.0389"/>
<QuasiParabolic ID="8" StartDistance="6626.0" EndDistance="6638.0" A="-2.12311223E13" B="6.3959813E9" C="-481698.44" Error="0.0102"/>
<QuasiParabolic ID="9" StartDistance="6638.0" EndDistance="6638.764" A="-2.4847319E13" B="7.485526E9" C="-563767.2" Error="0.0"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="111.389" Depth="0.154"/>
<TopsideChapman PeakHeight="268.764" PeakDensity="85491.625" PeakScaleHeight="14.737" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
