<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-21 -111 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 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) 06:50:00</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="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202611104210650001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.725" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.762" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="14.014" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.075" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="222.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="222.500" 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="0.075" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.600" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="267.359" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.050" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.050" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="237.025" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="216.574" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.064" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="29.232" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.133" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="15.593" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="27.510" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.620" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="68">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.05 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 2.825 2.85 2.875 2.9 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
222.500 222.500 222.500 222.500 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 227.500 227.500 227.500 227.500 227.500 227.500 230.000 230.000 230.000 230.000 230.000 230.000 232.500 232.500 232.500 232.500 232.500 233.750 235.000 235.000 235.000 235.000 235.833 236.667 237.500 237.500 237.500 240.000 240.000 240.000 240.000 242.500 242.500 242.500 242.500 245.000 247.500 247.500 250.000 250.000 250.000 252.500 253.344 254.298 255.384 256.633 258.084 259.791 261.827 264.298 267.359 271.252 276.369 283.393 293.636 309.970
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 69 66 78 81 81 81 66 66 54 54 51 54 78 78 72 69 72 72 75 75 75 75 72 69 72 75 75 72 57 60 45 45 51 0 0 81 84 84 84 84 87 84 99 99 84 81 96 90 90 84 72 72 87 90 81 81 96 96 96 96 96 93 93 87 75 69 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 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="389">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 136.25 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 162.5 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 188.75 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 237.025 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0
</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 0.35332385 0.3524629 0.35123456 0.3496469 0.3477836 0.34551057 0.34284618 0.3398121 0.3363646 0.33256927 0.32832938 0.32366115 0.31855893 0.31297255 0.3068771 0.30027556 0.29307804 0.2853064 0.27685073 0.26765716 0.25764734 0.24675402 0.23483722 0.22173925 0.20734549 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 0.20293333 0.2088 0.21466666 0.22053333 0.2264 0.23226666 0.23813333 0.244 0.24986666 0.25573334 0.2616 0.26746666 0.27333334 0.2792 0.28506666 0.29093334 0.2968 0.30266666 0.30853334 0.3144 0.32026666 0.32613334 0.332 0.33786666 0.34373334 0.3496 0.354 0.36343232 0.40291548 0.44505236 0.4896952 0.5368035 0.5864366 0.6386794 0.6936964 0.7516758 0.81283367 0.87742156 0.94568247 1.017905 1.0943229 1.175227 1.2608018 1.3512313 1.4465828 1.5467954 1.651674 1.7608198 1.8736007 1.9892143 2.1066267 2.2246659 2.3421543 2.457912 2.5708432 2.6800315 2.7847261 2.8843691 2.978545 3.0670226 3.1496613 3.226407 3.2972825 3.3623252 3.4216604 3.4753706 3.5235627 3.5663607 3.6038613 3.6361718 3.6633778 3.6855495 3.7027562 3.7150443 3.7224514 3.7249901 3.725 3.7235963 3.7193196 3.712291 3.7026348 3.6904745 3.6759338 3.6591363 3.6402035 3.619256 3.596412 3.5717878 3.5454972 3.5176508 3.4883566 3.4577196 3.425841 3.3928194 3.3587492 3.323722 3.2878249 3.2511425 3.2137551 3.1757405 3.1371715 3.0981188 3.0586493 3.018826 2.9787095 2.9383566 2.8978214 2.857155 2.8164058 2.7756183 2.7348356 2.6940978 2.6534417 2.6129029 2.5725138 2.532305 2.4923048 2.4525394 2.4130335 2.3738093 2.3348875 2.2962873 2.2580264 2.2201202 2.1825836 2.1454298 2.1086705 2.0723164 2.036377 2.0008605 1.9657747 1.9311258 1.8969194 1.86316 1.8298516 1.7969974 1.7645997 1.7326603 1.7011803 1.6701604 1.6396006 1.6095004 1.5798589 1.5506748 1.5219463 1.4936714 1.4658476 1.4384722 1.411542 1.3850539 1.3590043 1.3333893 1.308205 1.2834474 1.2591121 1.2351946 1.2116903 1.1885946 1.1659027 1.1436095 1.1217103 1.1001999 1.0790732 1.0583252 1.0379505 1.017944 0.99830043 0.97901464 0.9600813 0.9414951 0.9232509 0.9053434 0.88776743 0.8705177 0.85358906 0.8369764 0.8206746 0.80467856 0.78898317 0.77358353 0.75847465 0.74365157 0.7291095 0.7148436 0.70084906 0.6871212 0.6736554 0.66044706 0.6474916 0.63478446 0.62232137 0.6100979 0.59810966 0.5863525 0.5748223 0.56351477 0.55242586 0.54155165 0.53088814 0.52043146 0.5101778 0.5001233 0.4902644 0.48059735 0.47111857 0.46182454 0.4527118 0.4437769 0.43501654 0.42642736 0.41800615 0.40974975 0.40165493 0.3937187 0.385938 0.37830985 0.37083134 0.3634996 0.3563118 0.3492652 0.34235704 0.3355847 0.32894555 0.32243696 0.3160565 0.30980158 0.30366987 0.2976589 0.29176638 0.28599 0.28032747 0.2747766 0.26933524 0.2640012 0.2587724 0.25364682 0.24862242 0.24369723 0.2388693 0.23413672 0.22949764 0.22495022 0.22049269 0.21612325 0.21184018 0.20764181 0.20352645 0.19949247 0.19553828 0.19166233 0.18786304 0.18413894 0.18048853 0.17691036 0.17340301 0.16996509 0.16659522 0.16329208 0.16005433 0.15688069 0.15376991 0.15072073 0.14773194 0.14480236 0.1419308 0.13911614 0.13635723 0.13365299 0.13100232 0.12840419 0.12585753 0.123361334 0.120914616 0.118516386 0.11616568 0.113861576 0.11160314 0.10938947 0.10721968 0.105092905 0.10300829 0.100965 0.098962225 0.09699915 0.09507501 0.09318901 0.09134041 0.089528464 0.08775245 0.08601164 0.08430536 0.08263292 0.080993645 0.079386875 0.07781197 0.0762683 0.074755244 0.0732722 0.07181856 0.07039376 0.06899722 0.067628376 0.066286676 0.064971596 0.0636826 0.06241917 0.0611808 0.059966993 0.058777265 0.057611138 0.05646814 0.055347815 0.054249715 0.053173397 0.05211843 0.05108439 0.050070867

</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="3.725" PeakHeight="237.025" Num="5" zHalfNm="216.574" Error="0.281">
-51.15 4.666 -2.809 1.257 -0.239
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="7" 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="6506.25" A="-2.20048884E11" B="6.791632E7" C="-5240.3315" Error="0.00141"/>
<QuasiParabolic ID="2" StartDistance="6506.25" EndDistance="6532.5" A="0.0" B="4419.9883" C="-0.63933235" Error="0.0679"/>
<QuasiParabolic ID="3" StartDistance="6532.5" EndDistance="6557.0" A="-1.67884196E10" B="4992902.0" C="-370.86484" Error="0.0679"/>
<QuasiParabolic ID="4" StartDistance="6557.0" EndDistance="6568.0" A="7.59637E12" B="-2.31715405E9" C="176703.02" Error="0.0469"/>
<QuasiParabolic ID="5" StartDistance="6568.0" EndDistance="6589.0" A="2.39617714E13" B="-7.3005281E9" C="556070.75" Error="0.0555"/>
<QuasiParabolic ID="6" StartDistance="6589.0" EndDistance="6607.025" A="-3.29229921E13" B="9.9660564E9" C="-754187.6" Error="0.0106"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="78.75" Depth="0.154"/>
<TopsideChapman PeakHeight="237.025" PeakDensity="172154.16" PeakScaleHeight="15.593" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
