<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-01 -121 22:50:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 70% 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" >
2026.05.01 (121) 22:50:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.20" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.98" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="75.82641" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202612105012250001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.575" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.460" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="12.371" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.200" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.200" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.850" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="272.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="272.500" 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="3.375" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="297.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.200" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.200" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="268.058" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="245.885" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.549" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="31.853" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.137" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="16.661" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="31.910" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.040" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="16">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
3.2 3.225 3.25 3.275 3.3 3.325 3.35 3.375 3.4 3.425 3.45 3.475 3.5 3.525 3.55 3.575
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
272.500 277.500 280.000 283.500 287.000 290.500 294.000 297.500 302.500 307.500 312.500 317.500 322.500 325.000 330.000 335.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
96 0 0 0 0 0 0 0 0 0 0 0 0 81 0 81
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="434">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 143.41566 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 176.83133 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 210.247 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 268.058 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0
</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 0.34877208 0.34713763 0.3453056 0.34321257 0.3409399 0.3383592 0.33562312 0.33260998 0.3292753 0.32577202 0.32193375 0.31779587 0.31339577 0.3087171 0.3037006 0.29830799 0.29259574 0.28649202 0.28003046 0.27303562 0.26565358 0.2577354 0.24924988 0.24015981 0.2303944 0.21985728 0.20849364 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 0.20077732 0.20538594 0.20999455 0.21460317 0.21921179 0.2238204 0.22842902 0.23303764 0.23764625 0.24225487 0.24686348 0.25147212 0.25608072 0.26068935 0.26529795 0.26990658 0.27451518 0.2791238 0.2837324 0.28834105 0.29294965 0.29755828 0.30216688 0.3067755 0.3113841 0.31599274 0.32060134 0.32520998 0.32981858 0.3344272 0.3390358 0.34364444 0.34825304 0.35286167 0.354 0.37566838 0.40584394 0.43771154 0.47138295 0.5069543 0.5445114 0.5841404 0.6259039 0.6698685 0.71608126 0.764569 0.8153648 0.8684533 0.9238451 0.98150134 1.0413762 1.1034353 1.1675853 1.2337619 1.3018528 1.3717613 1.4433693 1.5165449 1.5911425 1.6670326 1.7440517 1.8220268 1.9008005 1.9801854 2.060004 2.1400697 2.2201738 2.3001163 2.3796895 2.4586644 2.53685 2.6139796 2.6898217 2.7641764 2.8367517 2.9073367 2.975676 3.0415015 3.1045744 3.1646552 3.2214959 3.274843 3.3244722 3.3701694 3.4117131 3.4489071 3.481581 3.5095599 3.53271 3.5509098 3.5640635 3.5721056 3.5749943 3.575 3.5738971 3.5703728 3.5645192 3.5564334 3.546213 3.533955 3.5197573 3.5037155 3.4859257 3.4664814 3.4454753 3.4229984 3.3991396 3.3739858 3.3476214 3.320129 3.2915883 3.262077 3.23167 3.2004395 3.1684556 3.135785 3.102493 3.068641 3.0342882 2.999492 2.9643064 2.9287834 2.8929722 2.8569202 2.8206716 2.7842693 2.7477531 2.7111614 2.6745303 2.6378934 2.601283 2.5647295 2.5282607 2.4919035 2.455683 2.4196224 2.3837435 2.3480668 2.3126109 2.2773933 2.2424304 2.2077374 2.1733277 2.1392145 2.105409 2.071922 2.0387633 2.0059416 1.9734645 1.9413394 1.9095725 1.8781692 1.8471345 1.8164725 1.7861868 1.7562804 1.7267557 1.6976148 1.668859 1.6404892 1.612506 1.5849097 1.5576999 1.5308763 1.5044376 1.478383 1.4527106 1.4274191 1.4025062 1.3779699 1.3538076 1.3300169 1.3065947 1.2835383 1.2608446 1.2385101 1.2165319 1.1949061 1.1736294 1.1526979 1.1321082 1.1118561 1.091938 1.0723499 1.0530878 1.0341477 1.0155255 0.9972172 0.9792186 0.9615257 0.94413424 0.9270402 0.9102394 0.8937277 0.877501 0.86155516 0.8458861 0.8304897 0.8153619 0.8004987 0.78589606 0.77155 0.7574565 0.7436116 0.73001146 0.7166522 0.70353 0.6906411 0.6779816 0.66554797 0.65333635 0.6413432 0.6295649 0.6179978 0.6066386 0.59548366 0.5845296 0.573773 0.5632106 0.55283904 0.5426551 0.53265554 0.5228372 0.513197 0.50373185 0.49443865 0.48531452 0.47635648 0.4675616 0.45892707 0.45045006 0.4421278 0.43395758 0.4259367 0.41806254 0.41033247 0.40274394 0.39529446 0.38798153 0.38080275 0.37375566 0.36683795 0.3600473 0.35338143 0.3468381 0.34041506 0.3341102 0.32792136 0.32184646 0.31588343 0.31003025 0.30428496 0.29864556 0.29311013 0.2876768 0.28234375 0.2771091 0.27197105 0.2669279 0.26197785 0.25711927 0.25235045 0.24766976 0.24307556 0.23856632 0.23414046 0.22979645 0.2255328 0.22134802 0.21724066 0.21320933 0.20925261 0.20536914 0.20155758 0.19781658 0.19414487 0.19054116 0.18700421 0.18353277 0.18012567 0.1767817 0.17349969 0.1702785 0.16711704 0.16401418 0.16096883 0.15797994 0.15504648 0.15216741 0.14934173 0.14656846 0.14384663 0.14117528 0.13855349 0.13598034 0.13345492 0.13097635 0.12854376 0.12615633 0.12381319 0.12151354 0.119256556 0.11704146 0.114867486 0.112733856 0.110639825 0.10858467 0.106567666 0.1045881 0.10264528 0.10073853 0.098867185 0.09703058 0.095228076 0.09345904 0.091722846 0.09001889 0.08834658 0.08670532 0.08509454 0.08351367 0.08196215 0.080439456 0.07894503 0.07747837 0.07603894 0.074626245 0.07323979 0.07187908 0.070543654 0.06923302 0.06794674 0.06668434 0.06544539 0.064229466 0.063036114 0.06186494 0.06071551 0.05958744 0.058480322 0.05739377 0.056327403 0.055280842 0.054253727 0.05324569 0.05225638 0.05128545 0.050332554

</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="3.575" PeakHeight="268.058" Num="5" zHalfNm="245.885" Error="0.97">
-57.439 -0.487 0.207 -0.153 0.061
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="11" 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="6513.416" A="-1.36065819E11" B="4.1995624E7" C="-3240.2776" Error="0.00166"/>
<QuasiParabolic ID="2" StartDistance="6513.416" EndDistance="6546.831" A="0.0" B="-739.05927" C="0.15349478" Error="0.0152"/>
<QuasiParabolic ID="3" StartDistance="6546.831" EndDistance="6572.0" A="5.4706246E10" B="-1.6781456E7" C="1286.9708" Error="0.0152"/>
<QuasiParabolic ID="4" StartDistance="6572.0" EndDistance="6579.0" A="-4.3692343E10" B="1.3163337E7" C="-991.23926" Error="0.00557"/>
<QuasiParabolic ID="5" StartDistance="6579.0" EndDistance="6582.0" A="7.483581E12" B="-2.27510938E9" C="172916.1" Error="0.0196"/>
<QuasiParabolic ID="6" StartDistance="6582.0" EndDistance="6585.0" A="2.58725066E12" B="-7.8731539E8" C="59896.195" Error="0.00463"/>
<QuasiParabolic ID="7" StartDistance="6585.0" EndDistance="6594.0" A="6.610815E12" B="-2.00935462E9" C="152685.81" Error="0.0135"/>
<QuasiParabolic ID="8" StartDistance="6594.0" EndDistance="6612.0" A="1.37616719E13" B="-4.17825254E9" C="317145.78" Error="0.0101"/>
<QuasiParabolic ID="9" StartDistance="6612.0" EndDistance="6626.0" A="3.65037591E12" B="-1.11978445E9" C="85864.15" Error="0.0159"/>
<QuasiParabolic ID="10" StartDistance="6626.0" EndDistance="6638.058" A="-3.27388957E13" B="9.8639985E9" C="-742975.44" Error="0.00558"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="100.247" Depth="0.154"/>
<TopsideChapman PeakHeight="268.058" PeakDensity="158568.55" PeakScaleHeight="16.661" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
