<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-18 -108 02:15:00.000"
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" >
2026.04.18 (108) 02:15:00</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">
FF202610804180215001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.614" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="7.950" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="2.825" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="290.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="290.000" 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="0.025" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.200" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="304.045" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="263.781" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="246.409" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.839" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="24.362" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.346" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="12.612" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="26.190" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.690" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="9">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.0 2.025 2.05 2.075 2.1 2.125 2.15 2.175 2.2
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
290.000 290.000 292.500 292.500 295.000 295.660 296.727 298.750 304.045
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
81 81 78 78 78 75 75 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="348">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 147.18333 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 184.36667 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 221.55 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 263.781 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0
</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 0.35321164 0.35265058 0.35186794 0.35086685 0.3497987 0.34844553 0.34695965 0.3453451 0.3434644 0.34146795 0.33922297 0.3368097 0.33417103 0.33138672 0.32833943 0.32511213 0.32159945 0.31794792 0.31400287 0.30980015 0.30537704 0.30066904 0.2957044 0.29042384 0.2848165 0.27889425 0.27261508 0.26591378 0.2588654 0.251306 0.24331449 0.23481233 0.2256673 0.21596687 0.2055198 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 0.2 0.2 0.20262304 0.20676468 0.21090633 0.21504796 0.2191896 0.22333124 0.22747289 0.23161452 0.23575616 0.2398978 0.24403945 0.24818109 0.25232273 0.25646436 0.26060602 0.26474765 0.26888928 0.27303094 0.27717257 0.2813142 0.28545585 0.28959748 0.29373914 0.29788077 0.3020224 0.30616406 0.31030568 0.31444734 0.31858897 0.3227306 0.32687226 0.3310139 0.33515555 0.33929718 0.3434388 0.34758046 0.3517221 0.354 0.37053445 0.4046541 0.43784973 0.47162142 0.50681615 0.54401344 0.58365315 0.6260497 0.671375 0.7196227 0.77057165 0.82382405 0.87884086 0.9350349 0.9918402 1.048786 1.1054983 1.1617298 1.217322 1.2721717 1.3262535 1.3795495 1.4320859 1.483877 1.5349505 1.5853345 1.6350435 1.6840686 1.7324057 1.7800027 1.8268116 1.8727142 1.9175601 1.9611225 2.0030909 2.0430398 2.0804167 2.1144729 2.1443007 2.1688154 2.1868744 2.1974363 2.2 2.1999354 2.1980336 2.193596 2.1867597 2.1776636 2.1664453 2.153242 2.138189 2.1214185 2.1030602 2.0832398 2.0620792 2.0396967 2.0162048 1.9917129 1.9663243 1.9401382 1.9132488 1.885745 1.8577116 1.8292278 1.8003688 1.7712048 1.741802 1.7122215 1.6825211 1.6527541 1.6229701 1.5932148 1.5635307 1.5339568 1.504529 1.4752799 1.4462396 1.4174353 1.3888917 1.3606311 1.3326737 1.3050371 1.2777376 1.2507892 1.2242042 1.1979934 1.1721661 1.1467303 1.1216924 1.0970578 1.0728309 1.0490149 1.0256121 1.002624 0.9800513 0.9578937 0.93615067 0.9148208 0.8939021 0.8733923 0.85328835 0.83358717 0.814285 0.7953778 0.77686137 0.7587312 0.7409824 0.7236101 0.7066091 0.689974 0.6736995 0.65778 0.64220977 0.6269832 0.6120945 0.5975378 0.5833074 0.5693972 0.5558015 0.54251444 0.5295301 0.5168427 0.50444645 0.4923356 0.48050442 0.46894726 0.45765853 0.44663265 0.43586418 0.4253477 0.4150778 0.40504932 0.39525697 0.3856957 0.3763604 0.36724612 0.35834804 0.34966132 0.34118122 0.33290315 0.32482252 0.3169349 0.3092359 0.30172122 0.2943866 0.28722796 0.28024122 0.27342242 0.26676765 0.26027313 0.2539351 0.2477499 0.24171397 0.23582381 0.23007597 0.22446711 0.21899396 0.21365331 0.208442 0.20335697 0.19839524 0.19355384 0.18882993 0.18422069 0.1797234 0.17533536 0.17105398 0.16687667 0.16280095 0.15882438 0.15494458 0.15115923 0.14746603 0.14386277 0.14034729 0.13691746 0.13357121 0.13030653 0.12712143 0.12401401 0.12098237 0.118024684 0.11513916 0.11232403 0.1095776 0.10689822 0.10428423 0.101734065 0.09924616 0.096819006 0.09445113 0.09214109 0.08988748 0.087688915 0.085544065 0.08345162 0.08141031 0.079418875 0.077476114 0.075580835 0.07373188 0.07192812 0.07016845 0.0684518 0.06677712 0.06514338 0.063549586 0.061994765 0.06047796 0.058998246 0.057554718 0.056146495 0.05477271 0.05343252 0.05212511 0.05084968

</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="2.2" PeakHeight="263.781" Num="5" zHalfNm="246.409" Error="1.27">
-39.872 -4.117 2.737 -1.564 0.585
</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="6517.183" A="-1.10007321E11" B="3.3952876E7" C="-2619.6956" Error="0.00178"/>
<QuasiParabolic ID="2" StartDistance="6517.183" EndDistance="6554.367" A="0.0" B="1009.23505" C="-0.11482026" Error="0.021"/>
<QuasiParabolic ID="3" StartDistance="6554.367" EndDistance="6588.0" A="2.16927724E10" B="-6699964.5" C="517.297" Error="0.021"/>
<QuasiParabolic ID="4" StartDistance="6588.0" EndDistance="6589.0" A="-2.44538173E12" B="7.422601E8" C="-56325.453" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6589.0" EndDistance="6599.0" A="5.2677433E12" B="-1.59895245E9" C="121335.234" Error="0.0324"/>
<QuasiParabolic ID="6" StartDistance="6599.0" EndDistance="6615.0" A="6.7116215E12" B="-2.0365577E9" C="154492.17" Error="0.0336"/>
<QuasiParabolic ID="7" StartDistance="6615.0" EndDistance="6629.0" A="-6.5965051E11" B="1.92095984E8" C="-13962.377" Error="0.00725"/>
<QuasiParabolic ID="8" StartDistance="6629.0" EndDistance="6633.781" A="-3.18415013E13" B="9.5998044E9" C="-723549.7" Error="0.00191"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="111.55" Depth="0.154"/>
<TopsideChapman PeakHeight="263.781" PeakDensity="60049.63" PeakScaleHeight="12.612" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
