<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-29 -119 07:40:00.000"
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: 100%</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.29 (119) 07:40:00</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="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202611904290740001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.950" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.740" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="14.773" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.925" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.925" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.275" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="230.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="230.000" 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="3.775" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="266.131" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.925" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.925" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="240.124" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="221.020" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.754" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="27.317" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.197" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="14.663" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="25.200" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.840" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="42">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 3.3 3.325 3.35 3.375 3.4 3.425 3.45 3.475 3.5 3.525 3.55 3.575 3.6 3.625 3.65 3.675 3.7 3.725 3.75 3.775 3.8 3.825 3.85 3.875 3.9 3.925 3.95
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
230.000 230.000 230.000 232.500 232.500 232.500 232.500 232.500 235.000 237.500 237.500 237.500 237.500 237.500 237.500 237.500 240.000 240.000 240.000 242.500 242.500 245.000 245.000 247.500 247.500 247.500 250.000 252.500 252.500 252.500 257.500 259.145 261.074 263.365 266.131 269.539 273.839 279.435 287.017 297.872 314.700 344.301
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 72 87 87 87 87 87 84 96 90 78 0 84 90 90 90 96 96 108 111 96 90 90 84 90 87 93 90 90 90 90 87 75 72 63 0 0 84 81 84 81 78
</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 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="377">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 240.124 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0
</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 0.353812 0.35339895 0.35261247 0.3516065 0.35023698 0.34851307 0.34651887 0.34419376 0.34155348 0.33854687 0.33526585 0.33153415 0.32752004 0.32306805 0.31823066 0.3130061 0.3072951 0.30113927 0.29447237 0.28732234 0.2796049 0.2711702 0.2621697 0.25230387 0.24165411 0.23006094 0.21740833 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 0.2055 0.211 0.2165 0.222 0.2275 0.233 0.2385 0.244 0.2495 0.255 0.2605 0.266 0.2715 0.277 0.2825 0.288 0.2935 0.299 0.3045 0.31 0.3155 0.321 0.3265 0.332 0.3375 0.343 0.3485 0.354 0.39203906 0.43460256 0.48113585 0.53107595 0.58404016 0.6398112 0.6983643 0.75978893 0.824264 0.8920623 0.9635111 1.0389754 1.1188624 1.2036419 1.293761 1.3896775 1.4918584 1.6006323 1.716208 1.8384877 1.9670743 2.1010675 2.2390547 2.3791707 2.5192454 2.6570244 2.7904928 2.9179862 3.0383427 3.1507974 3.2550147 3.3508914 3.43856 3.5182383 3.5902073 3.6547918 3.7122965 3.76301 3.8072011 3.845106 3.876944 3.902873 3.9230454 3.937569 3.9465241 3.9499578 3.95 3.9486403 3.9438555 3.935774 3.9245536 3.9103522 3.8933277 3.8736367 3.851434 3.8268723 3.8001018 3.7712684 3.7405157 3.7079823 3.6738033 3.6381094 3.6010265 3.562676 3.5231743 3.4826336 3.4411604 3.3988576 3.355822 3.312147 3.26792 3.223225 3.1781414 3.1327434 3.0871017 3.041283 2.995349 2.949359 2.9033675 2.857426 2.811582 2.7658806 2.7203631 2.675068 2.6300306 2.585284 2.5408585 2.4967818 2.4530795 2.4097745 2.3668883 2.32444 2.2824464 2.2409236 2.1998851 2.1593432 2.1193087 2.0797908 2.040798 2.0023367 1.964413 1.9270314 1.8901955 1.8539081 1.818171 1.7829854 1.7483516 1.7142692 1.6807371 1.6477538 1.6153172 1.5834246 1.5520729 1.5212586 1.4909778 1.461226 1.431999 1.4032916 1.3750988 1.3474153 1.3202355 1.2935534 1.2673632 1.2416589 1.2164342 1.1916827 1.1673982 1.143574 1.1202036 1.0972804 1.0747977 1.0527489 1.0311273 1.0099261 0.9891387 0.9687584 0.9487785 0.92919236 0.90999335 0.8911749 0.8727305 0.8546536 0.83693784 0.8195768 0.8025641 0.78589356 0.76955897 0.7535542 0.7378732 0.7225099 0.70745856 0.6927132 0.67826813 0.6641177 0.6502562 0.6366783 0.62337834 0.61035115 0.5975914 0.58509386 0.57285345 0.5608651 0.54912394 0.5376251 0.52636373 0.5153352 0.50453484 0.49395812 0.48360056 0.4734578 0.46352556 0.45379958 0.44427568 0.43494985 0.425818 0.4168763 0.40812078 0.39954776 0.39115345 0.38293427 0.3748866 0.36700696 0.3592919 0.35173804 0.34434208 0.33710077 0.33001095 0.32306948 0.3162733 0.30961946 0.30310494 0.2967269 0.29048255 0.28436905 0.27838376 0.272524 0.26678714 0.26117066 0.25567204 0.25028884 0.24501865 0.23985912 0.23480794 0.22986287 0.22502169 0.22028223 0.21564238 0.21110003 0.20665318 0.2022998 0.19803797 0.19386576 0.1897813 0.18578273 0.1818683 0.1780362 0.17428473 0.1706122 0.16701695 0.16349737 0.16005187 0.15667889 0.1533769 0.15014444 0.14698003 0.14388224 0.14084968 0.13788098 0.1349748 0.13212982 0.12934475 0.12661836 0.12394937 0.12133661 0.11877889 0.11627505 0.11382396 0.1114245 0.1090756 0.106776185 0.104525216 0.102321684 0.10016458 0.09805293 0.09598577 0.09396218 0.09198123 0.09004203 0.0881437 0.086285375 0.08446621 0.082685396 0.08094211 0.07923557 0.07756499 0.075929634 0.07432874 0.072761595 0.07122748 0.06972571 0.06825559 0.066816464 0.06540767 0.064028576 0.06267855 0.06135699 0.06006329 0.058796864 0.057557132 0.056343537 0.055155527 0.053992562 0.052854117 0.05173967 0.050648723

</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="3.95" PeakHeight="240.124" Num="5" zHalfNm="221.02" Error="1.29">
-48.684 4.642 -3.36 1.729 -0.451
</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="6508.0" A="-1.93482834E11" B="5.9716924E7" C="-4607.662" Error="0.00161"/>
<QuasiParabolic ID="2" StartDistance="6508.0" EndDistance="6536.0" A="0.0" B="1513.3687" C="-0.19251673" Error="0.0243"/>
<QuasiParabolic ID="3" StartDistance="6536.0" EndDistance="6561.0" A="3.4479739E10" B="-1.0659056E7" C="823.7382" Error="0.0243"/>
<QuasiParabolic ID="4" StartDistance="6561.0" EndDistance="6562.0" A="-1.24370013E12" B="3.78970528E8" C="-28869.113" Error="3.19E-11"/>
<QuasiParabolic ID="5" StartDistance="6562.0" EndDistance="6566.0" A="7.5540464E12" B="-2.30245171E9" C="175445.3" Error="0.0387"/>
<QuasiParabolic ID="6" StartDistance="6566.0" EndDistance="6571.0" A="9.1613068E12" B="-2.79202253E9" C="212726.03" Error="0.0101"/>
<QuasiParabolic ID="7" StartDistance="6571.0" EndDistance="6577.0" A="1.32858417E13" B="-4.04739763E9" C="308249.94" Error="0.00727"/>
<QuasiParabolic ID="8" StartDistance="6577.0" EndDistance="6592.0" A="3.9115542E13" B="-1.1901951E10" C="905372.75" Error="0.0213"/>
<QuasiParabolic ID="9" StartDistance="6592.0" EndDistance="6610.124" A="-4.13186E13" B="1.25016105E10" C="-945625.56" Error="0.0071"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="84.0" Depth="0.154"/>
<TopsideChapman PeakHeight="240.124" PeakDensity="193579.4" PeakScaleHeight="14.663" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
