<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-21 -111 07:20:00.000"
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" >
2026.04.21 (111) 07:20:00</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">
FF202611104210720001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.875" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.797" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="10.917" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.150" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="217.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="217.500" 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="2.700" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="250.975" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="232.222" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="210.767" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.860" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="30.636" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.724" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="16.770" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="25.960" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.800" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="26">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 2.825 2.85 2.875
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
217.500 220.000 220.000 220.000 222.500 225.000 225.000 227.500 230.000 230.000 230.000 231.558 233.307 235.286 237.543 240.141 243.162 246.721 250.975 256.149 262.577 270.780 281.608 296.563 318.561 354.108
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 54 57 54 57 66 69 84 78 78 75 75 75 69 72 75 75 69 72 66 66 51 57 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="388">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 135.08333 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 160.16667 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 185.25 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 232.222 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0
</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 0.35324875 0.35231337 0.35101187 0.34927908 0.3471288 0.34465033 0.34171918 0.33843222 0.33468077 0.33043912 0.32582152 0.32063016 0.31500506 0.30879995 0.30202654 0.29470333 0.28661102 0.27785686 0.26831484 0.25787413 0.24648583 0.23391104 0.2201678 0.20492378 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 0.20511627 0.21125582 0.21739535 0.22353488 0.22967441 0.23581396 0.24195349 0.24809302 0.25423256 0.2603721 0.26651162 0.27265117 0.2787907 0.28493023 0.29106978 0.2972093 0.30334884 0.3094884 0.3156279 0.32176745 0.32790697 0.3340465 0.34018606 0.34632558 0.35246512 0.354 0.3773978 0.41204968 0.44991317 0.49012715 0.53203964 0.57530695 0.61980176 0.665595 0.71282667 0.7617375 0.8125973 0.8657497 0.9215639 0.9804925 1.0430058 1.1096901 1.1811256 1.2579801 1.3408717 1.4302938 1.5264077 1.6286798 1.7356523 1.8447784 1.9528372 2.0565975 2.1537027 2.2428524 2.3236456 2.3963509 2.4615283 2.5198367 2.5719275 2.6184132 2.6598206 2.6966271 2.7292175 2.7579308 2.7830324 2.8047726 2.8233323 2.8388731 2.8515277 2.8613942 2.8685517 2.8730538 2.8749359 2.875 2.8744016 2.8719141 2.8675644 2.8614287 2.8535838 2.8441067 2.8330743 2.8205624 2.8066463 2.7914011 2.7748995 2.7572134 2.7384136 2.718569 2.6977468 2.676012 2.6534288 2.6300583 2.6059604 2.5811927 2.555811 2.5298686 2.503417 2.4765062 2.449183 2.4214935 2.3934808 2.3651865 2.3366501 2.3079095 2.2790008 2.2499576 2.2208128 2.1915965 2.1623383 2.1330652 2.1038032 2.0745766 2.0454087 2.0163207 1.9873327 1.958464 1.9297321 1.9011536 1.8727438 1.8445172 1.8164868 1.7886652 1.7610633 1.733692 1.7065607 1.6796781 1.6530523 1.6266905 1.6005993 1.5747845 1.5492516 1.5240049 1.4990488 1.4743869 1.4500222 1.4259573 1.4021944 1.3787351 1.3555809 1.3327328 1.3101914 1.287957 1.2660296 1.2444088 1.2230942 1.2020851 1.1813803 1.1609784 1.1408784 1.1210783 1.1015764 1.0823709 1.0634594 1.0448397 1.0265098 1.0084668 0.99070835 0.9732317 0.956034 0.9391126 0.9224645 0.9060867 0.8899762 0.87413 0.85854495 0.84321785 0.82814556 0.8133249 0.79875267 0.78442556 0.7703404 0.75649387 0.7428827 0.7295037 0.7163536 0.7034291 0.69072694 0.678244 0.66597694 0.65392256 0.64207774 0.63043934 0.61900413 0.60776895 0.5967308 0.5858866 0.5752333 0.5647678 0.5544871 0.54438835 0.5344686 0.52472484 0.51515436 0.5057542 0.49652156 0.48745373 0.47854796 0.46980155 0.4612118 0.4527761 0.44449183 0.43635648 0.42836747 0.4205223 0.41281855 0.4052538 0.3978256 0.39053166 0.38336962 0.3763372 0.36943215 0.36265227 0.35599536 0.34945926 0.34304187 0.3367411 0.33055487 0.3244812 0.31851807 0.31266356 0.30691573 0.30127266 0.29573253 0.29029348 0.28495374 0.2797115 0.27456504 0.26951265 0.26455262 0.2596833 0.2549031 0.25021037 0.24560356 0.24108112 0.23664153 0.23228328 0.22800493 0.22380501 0.21968211 0.21563485 0.21166185 0.20776176 0.20393325 0.20017505 0.19648586 0.19286442 0.18930952 0.18581992 0.18239447 0.17903198 0.1757313 0.1724913 0.16931088 0.16618897 0.16312447 0.16011636 0.15716359 0.15426515 0.15142006 0.14862733 0.145886 0.14319515 0.14055385 0.13796118 0.13541624 0.1329182 0.13046613 0.12805927 0.12569672 0.1233777 0.12110142 0.11886708 0.1166739 0.114521146 0.11240807 0.110333934 0.10829803 0.10629966 0.104338124 0.10241275 0.100522876 0.098667845 0.09684701 0.09505976 0.09330546 0.09158351 0.08989332 0.08823429 0.08660587 0.085007474 0.08343857 0.08189859 0.080387026 0.07890335 0.077447034 0.07601758 0.0746145 0.07323731 0.07188552 0.070558675 0.069256306 0.067977965 0.06672321 0.06549161 0.06428274 0.063096166 0.06193149 0.060788307 0.059666216 0.058564834 0.057483777 0.056422666 0.055381138 0.054358833 0.053355392 0.05237047 0.051403727 0.050454825

</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="2.875" PeakHeight="232.222" Num="5" zHalfNm="210.767" Error="2.244">
-51.184 7.688 -5.579 2.829 -0.726
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="8" 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="6505.083" A="-2.40913678E11" B="7.4356072E7" C="-5737.226" Error="0.00142"/>
<QuasiParabolic ID="2" StartDistance="6505.083" EndDistance="6530.167" A="0.0" B="992.411" C="-0.112546384" Error="0.0143"/>
<QuasiParabolic ID="3" StartDistance="6530.167" EndDistance="6554.0" A="5.4936519E10" B="-1.693945E7" C="1305.7827" Error="0.0143"/>
<QuasiParabolic ID="4" StartDistance="6554.0" EndDistance="6555.0" A="7.4682964E12" B="-2.27917926E9" C="173890.45" Error="2.43E-10"/>
<QuasiParabolic ID="5" StartDistance="6555.0" EndDistance="6570.0" A="6.423586E12" B="-1.96042714E9" C="149576.78" Error="0.0329"/>
<QuasiParabolic ID="6" StartDistance="6570.0" EndDistance="6579.0" A="3.10313946E13" B="-9.4513889E9" C="719665.2" Error="0.0229"/>
<QuasiParabolic ID="7" StartDistance="6579.0" EndDistance="6602.222" A="-1.67594709E13" B="5.0769183E9" C="-384477.3" Error="0.0216"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="75.25" Depth="0.154"/>
<TopsideChapman PeakHeight="232.222" PeakDensity="102551.18" PeakScaleHeight="16.77" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
