<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-19 -139 23:20:00.000"
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" >
2026.05.19 (139) 23:20:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.22" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.99" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="75.82641" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202613905192320001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.505" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.565" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.975" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.975" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.750" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.125" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="292.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.975" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.975" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="266.411" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="246.337" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.213" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="28.791" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.883" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="15.090" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="29.050" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.030" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="14">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
272.500 275.000 280.000 282.500 287.500 290.000 292.500 297.500 302.500 310.000 315.000 323.611 333.897 346.402
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 69 81 84 81 84 96 96 93 90 90 87 87 84
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="404">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 144.76633 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 179.53267 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 214.299 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 266.411 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0
</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 0.35313663 0.3524263 0.35157037 0.35042325 0.34913787 0.34764504 0.34595087 0.34406236 0.3419169 0.3395955 0.33703944 0.33426252 0.33121407 0.32797855 0.3244479 0.32071084 0.31667337 0.31237218 0.3077906 0.30292213 0.29772076 0.2922335 0.2863338 0.28005266 0.2733686 0.26631117 0.25876698 0.25064635 0.24199095 0.23276444 0.2228775 0.21224304 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 0.20207009 0.20649967 0.21092923 0.21535881 0.21978837 0.22421795 0.22864753 0.2330771 0.23750667 0.24193624 0.24636582 0.2507954 0.25522497 0.25965452 0.2640841 0.26851368 0.27294326 0.27737284 0.2818024 0.28623196 0.29066154 0.29509112 0.29952067 0.30395025 0.30837983 0.3128094 0.317239 0.32166854 0.3260981 0.3305277 0.33495727 0.33938685 0.3438164 0.34824598 0.35267556 0.354 0.37493095 0.4063303 0.4396499 0.4749973 0.51247805 0.55217314 0.5941802 0.63855404 0.6853576 0.7346195 0.78637844 0.8406217 0.8973534 0.95653415 1.0181103 1.0820377 1.1482016 1.2165123 1.286851 1.359085 1.4330658 1.5086279 1.5855873 1.6637791 1.7429986 1.8230155 1.9036077 1.9845539 2.0656052 2.1465218 2.227001 2.3068013 2.3856225 2.4631693 2.539145 2.6132615 2.6851776 2.7546003 2.821194 2.884654 2.944659 3.0009077 3.0530992 3.1009452 3.1441727 3.1825302 3.2157907 3.2437406 3.2662148 3.2830682 3.294188 3.2995062 3.3 3.299513 3.2965055 3.2908566 3.2826865 3.2721164 3.2592678 3.2442608 3.2272148 3.2082481 3.1874762 3.165013 3.1409702 3.1154556 3.088575 3.0604303 3.0311208 3.000742 2.969386 2.9371414 2.9040933 2.8703227 2.8359077 2.8009226 2.765438 2.7295215 2.693237 2.656645 2.6198027 2.5827649 2.545582 2.5083027 2.4709723 2.4336329 2.3963249 2.359085 2.3219488 2.2849479 2.248113 2.211472 2.1750507 2.138873 2.1029615 2.067336 2.0320153 1.9970165 1.9623549 1.9280446 1.894098 1.8605269 1.8273413 1.7945502 1.7621615 1.7301822 1.6986182 1.6674745 1.6367555 1.6064646 1.5766045 1.5471771 1.5181841 1.4896259 1.461503 1.4338152 1.4065616 1.379741 1.3533518 1.3273921 1.3018595 1.2767514 1.2520648 1.2277966 1.2039433 1.180501 1.1574662 1.1348346 1.1126021 1.0907643 1.0693166 1.0482546 1.0275733 1.0072682 0.98733413 0.9677663 0.94855964 0.9297092 0.9112098 0.89305645 0.8752439 0.8577671 0.84062093 0.82380015 0.80729973 0.7911145 0.7752394 0.75966936 0.74439937 0.72942436 0.7147393 0.70033944 0.68621975 0.6723754 0.65880156 0.6454935 0.6324465 0.619656 0.6071173 0.5948259 0.5827773 0.570967 0.5593908 0.5480442 0.5369231 0.5260232 0.5153404 0.50487065 0.4946099 0.4845542 0.4746997 0.46504256 0.455579 0.44630533 0.4372179 0.4283131 0.4195874 0.4110374 0.4026596 0.39445072 0.3864074 0.3785265 0.37080476 0.36323908 0.3558264 0.34856373 0.34144807 0.33447653 0.3276463 0.3209545 0.31439844 0.30797544 0.3016828 0.29551795 0.28947836 0.2835615 0.27776495 0.27208626 0.26652312 0.26107317 0.25573415 0.25050384 0.24538006 0.24036066 0.23544353 0.23062663 0.22590794 0.22128545 0.21675724 0.2123214 0.20797607 0.20371942 0.19954965 0.195465 0.19146374 0.1875442 0.1837047 0.17994364 0.1762594 0.17265044 0.16911525 0.16565229 0.16226012 0.15893728 0.15568238 0.15249403 0.14937088 0.1463116 0.14331488 0.14037946 0.13750409 0.13468753 0.1319286 0.12922612 0.12657893 0.12398592 0.12144596 0.118958 0.11652095 0.11413378 0.111795485 0.10950505 0.1072615 0.105063885 0.10291126 0.10080271 0.09873734 0.09671425 0.09473259 0.09279151 0.090890184 0.08902779 0.08720354 0.08541665 0.08366636 0.081951916 0.08027259 0.07862766 0.07701643 0.075438194 0.073892295 0.07237806 0.070894845 0.06944201 0.06801895 0.06662504 0.06525968 0.06392229 0.06261231 0.061329167 0.06007231 0.058841206 0.05763533 0.056454156 0.055297185 0.05416392 0.05305388 0.05196658 0.050901562

</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="3.3" PeakHeight="266.411" Num="5" zHalfNm="246.337" Error="0.92">
-51.383 -0.834 0.179 -0.117 0.043
</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="6514.766" A="-1.2574285E11" B="3.880952E7" C="-2994.4365" Error="0.00169"/>
<QuasiParabolic ID="2" StartDistance="6514.766" EndDistance="6549.533" A="0.0" B="25.871113" C="0.03606527" Error="9.1E-4"/>
<QuasiParabolic ID="3" StartDistance="6549.533" EndDistance="6582.0" A="3.7273678E10" B="-1.1457839E7" C="880.52966" Error="3.83E-4"/>
<QuasiParabolic ID="4" StartDistance="6582.0" EndDistance="6583.0" A="-1.54345839E12" B="4.68861856E8" C="-35606.836" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6583.0" EndDistance="6586.0" A="8.36782E12" B="-2.54231194E9" C="193101.48" Error="0.0153"/>
<QuasiParabolic ID="6" StartDistance="6586.0" EndDistance="6589.0" A="2.87280778E12" B="-8.7361702E8" C="66416.484" Error="0.00598"/>
<QuasiParabolic ID="7" StartDistance="6589.0" EndDistance="6597.0" A="7.291613E12" B="-2.21488435E9" C="168197.28" Error="0.0104"/>
<QuasiParabolic ID="8" StartDistance="6597.0" EndDistance="6618.0" A="1.37622958E13" B="-4.17658906E9" C="316878.84" Error="0.00782"/>
<QuasiParabolic ID="9" StartDistance="6618.0" EndDistance="6628.0" A="-8.8400399E12" B="2.65397478E9" C="-199180.69" Error="0.0045"/>
<QuasiParabolic ID="10" StartDistance="6628.0" EndDistance="6636.411" A="-3.5322168E13" B="1.06449613E10" C="-802001.0" Error="0.00181"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="104.299" Depth="0.154"/>
<TopsideChapman PeakHeight="266.411" PeakDensity="135111.66" PeakScaleHeight="15.09" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
