<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-15 -105 06:50:00.000"
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: F2 cusps do not match</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.15 (105) 06:50:00</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">
FF202610504150650001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.711" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="10.391" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.075" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.075" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.300" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="242.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="242.500" 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="2.725" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="278.057" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.075" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.075" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="244.713" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="227.115" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.064" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="25.104" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.562" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="13.293" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="24.850" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.200" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="30">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 2.725 2.75 2.775 2.8
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
242.500 242.500 245.000 245.000 245.000 245.000 246.250 247.500 247.500 248.333 249.167 250.000 251.500 253.000 254.500 256.000 257.500 257.500 260.000 260.000 262.500 262.500 264.738 267.314 270.310 273.839 278.057 283.187 289.561 297.694
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
81 84 81 0 84 84 0 72 57 0 0 57 0 0 0 0 69 72 69 72 69 72 66 66 69 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 10.9375 -1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="349">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 140.91667 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 171.83333 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 202.75 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 244.713 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0
</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 0.35347393 0.3529119 0.3519786 0.3509026 0.34953943 0.34789655 0.34598285 0.3438088 0.34138623 0.3386593 0.33571413 0.33243394 0.32884502 0.3249759 0.3207348 0.3162249 0.311316 0.3060709 0.30039963 0.29436976 0.2878726 0.28096467 0.27349284 0.26549044 0.25688842 0.24761072 0.23761433 0.22685163 0.21513027 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 0.20083019 0.20581132 0.21079245 0.21577358 0.22075471 0.22573584 0.23071699 0.23569812 0.24067925 0.24566038 0.2506415 0.25562266 0.2606038 0.26558492 0.27056605 0.27554718 0.2805283 0.28550944 0.29049057 0.2954717 0.30045283 0.30543396 0.3104151 0.31539622 0.32037735 0.32535848 0.3303396 0.33532074 0.3403019 0.34528303 0.35026416 0.354 0.3631721 0.4011267 0.44127205 0.48375982 0.5287515 0.57640415 0.6268487 0.68019426 0.73654854 0.79598576 0.8585501 0.92424166 0.9930199 1.0648183 1.1394563 1.2167494 1.2964242 1.3781692 1.4615663 1.5462191 1.6316398 1.7173022 1.802681 1.8872467 1.9704636 2.0518148 2.1307936 2.2069287 2.2797956 2.3489964 2.4141805 2.4750066 2.5312219 2.582553 2.628812 2.669812 2.7053943 2.7354379 2.7598417 2.7785237 2.7914286 2.7985141 2.8 2.799873 2.797489 2.7921996 2.784155 2.773505 2.7604003 2.7449896 2.7274203 2.7078376 2.6863835 2.6631958 2.6384096 2.6121547 2.5845573 2.5557382 2.5258138 2.494895 2.4630883 2.4304948 2.3972108 2.3633273 2.3289306 2.294102 2.2589185 2.2234519 2.1877701 2.1519363 2.1160095 2.080045 2.0440938 2.008204 1.9724191 1.9367802 1.9013244 1.8660864 1.8310976 1.7963868 1.7619804 1.727902 1.6941731 1.6608131 1.6278392 1.5952668 1.5631095 1.5313793 1.5000864 1.4692398 1.4388471 1.4089144 1.3794469 1.3504486 1.3219224 1.2938707 1.2662942 1.2391938 1.2125689 1.1864185 1.1607412 1.1355346 1.1107962 1.0865228 1.0627108 1.0393562 1.0164548 0.9940019 0.97199273 0.95042205 0.9292846 0.9085747 0.88828677 0.86841494 0.8489532 0.8298955 0.8112356 0.7929674 0.77508444 0.75758046 0.74044913 0.7236841 0.7072789 0.69122726 0.67552274 0.66015905 0.6451299 0.630429 0.61605024 0.6019873 0.5882341 0.5747847 0.56163293 0.54877305 0.5361991 0.52390534 0.51188606 0.50013566 0.48864853 0.4774193 0.4664425 0.4557129 0.44522527 0.4349745 0.42495552 0.4151634 0.40559325 0.3962403 0.38709986 0.3781673 0.3694381 0.36090782 0.35257214 0.34442672 0.33646742 0.32869008 0.32109073 0.3136654 0.30641016 0.29932132 0.2923951 0.2856279 0.2790161 0.27255628 0.26624498 0.26007885 0.25405464 0.24816912 0.2424192 0.23680176 0.23131381 0.22595243 0.22071472 0.21559788 0.21059915 0.20571585 0.20094535 0.19628505 0.19173245 0.18728508 0.18294054 0.17869648 0.17455058 0.1705006 0.16654435 0.16267964 0.15890442 0.15521659 0.15161416 0.14809516 0.14465767 0.14129983 0.13801977 0.13481574 0.13168594 0.1286287 0.12564233 0.12272519 0.119875684 0.11709225 0.11437337 0.111717544 0.10912332 0.10658927 0.104114 0.10169616 0.09933442 0.097027466 0.09477405 0.09257293 0.09042288 0.08832274 0.08627133 0.08426754 0.08231026 0.08039842 0.07853095 0.07670684 0.07492507 0.07318468 0.071484685 0.06982416 0.0682022 0.06661789 0.06507037 0.06355879 0.062082306 0.060640108 0.059231404 0.057855416 0.05651138 0.05519856 0.05391623 0.05266368 0.051440224 0.050245184

</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="2.8" PeakHeight="244.713" Num="5" zHalfNm="227.115" Error="0.377">
-42.588 1.031 -0.633 0.241 -0.014
</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="6510.917" A="-1.58830494E11" B="4.902176E7" C="-3782.4177" Error="0.00166"/>
<QuasiParabolic ID="2" StartDistance="6510.917" EndDistance="6541.833" A="0.0" B="-1019.87225" C="0.1966671" Error="0.0192"/>
<QuasiParabolic ID="3" StartDistance="6541.833" EndDistance="6569.0" A="6.3460372E10" B="-1.9474742E7" C="1494.1237" Error="0.0192"/>
<QuasiParabolic ID="4" StartDistance="6569.0" EndDistance="6571.0" A="-8.7657343E11" B="2.66728272E8" C="-20290.242" Error="0.00194"/>
<QuasiParabolic ID="5" StartDistance="6571.0" EndDistance="6579.0" A="7.4737475E12" B="-2.27483955E9" C="173102.53" Error="0.0395"/>
<QuasiParabolic ID="6" StartDistance="6579.0" EndDistance="6589.0" A="1.25890598E13" B="-3.82988186E9" C="291284.8" Error="0.036"/>
<QuasiParabolic ID="7" StartDistance="6589.0" EndDistance="6602.0" A="1.29637967E13" B="-3.94362829E9" C="299916.34" Error="0.0362"/>
<QuasiParabolic ID="8" StartDistance="6602.0" EndDistance="6614.713" A="-2.81592505E13" B="8.5141263E9" C="-643567.06" Error="0.0116"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="92.75" Depth="0.154"/>
<TopsideChapman PeakHeight="244.713" PeakDensity="97270.47" PeakScaleHeight="13.293" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
