<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-29 -119 07:55:00.000"
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: 95% PACIFIC flags: Multiple candidates for F2o cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.29 (119) 07:55:00</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">
FF202611904290755001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.625" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.876" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="14.050" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.925" 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="3.475" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="251.195" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="229.422" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="212.440" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.714" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="24.295" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.904" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="13.108" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="22.340" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.000" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="28">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
222.500 222.500 222.500 225.000 225.000 225.000 227.500 227.500 230.000 230.000 230.000 232.500 235.000 235.000 235.000 240.000 240.000 241.516 243.298 245.423 248.002 251.195 255.253 260.582 267.890 278.532 295.460 326.584
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 81 81 81 84 96 96 99 96 87 87 90 84 87 84 93 99 87 87 87 84 84 84 84 81 81 75 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="342">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 136.25 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 162.5 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 188.75 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 229.422 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0
</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 0.36245376 0.40088585 0.44695798 0.50007004 0.55880314 0.6217192 0.6878467 0.7567983 0.82857335 0.9034167 0.9816971 1.0639373 1.1506921 1.2425687 1.3402493 1.4443488 1.5554843 1.6740608 1.8002217 1.9335104 2.0727558 2.2159102 2.3601604 2.5022464 2.6390615 2.768141 2.8878522 2.997385 3.0965416 3.1854997 3.2647274 3.334741 3.396074 3.4492533 3.4947455 3.5329537 3.5642126 3.5888035 3.6069438 3.6187932 3.624454 3.625 3.6243181 3.6199994 3.611875 3.6001472 3.5850194 3.5666935 3.5453706 3.521248 3.4945204 3.4653773 3.4340036 3.4005783 3.3652747 3.3282595 3.2896934 3.2497296 3.2085154 3.1661904 3.1228876 3.0787334 3.0338469 2.9883409 2.9423215 2.8958888 2.8491359 2.802151 2.7550154 2.7078056 2.6605928 2.6134422 2.5664148 2.5195673 2.4729507 2.426613 2.3805978 2.3349445 2.2896893 2.2448652 2.2005014 2.1566248 2.1132588 2.070425 2.0281417 1.9864253 1.94529 1.9047481 1.8648098 1.8254836 1.7867767 1.7486942 1.7112405 1.6744182 1.638229 1.6026735 1.567751 1.5334605 1.4997994 1.4667648 1.4343531 1.40256 1.3713806 1.3408095 1.3108407 1.281468 1.2526848 1.2244842 1.1968586 1.1698008 1.1433027 1.1173565 1.0919544 1.0670877 1.0427482 1.0189275 0.9956171 0.97280836 0.95049274 0.92866164 0.9073064 0.88641846 0.86598927 0.84601027 0.826473 0.807369 0.7886899 0.7704274 0.7525734 0.73511964 0.7180581 0.7013809 0.6850802 0.66914815 0.65357715 0.6383597 0.6234885 0.60895604 0.5947552 0.5808789 0.5673202 0.5540723 0.54112846 0.52848196 0.51612645 0.50405544 0.49226278 0.48074228 0.4694879 0.45849377 0.44775406 0.4372631 0.42701536 0.41700536 0.40722772 0.39767724 0.3883488 0.37923732 0.3703379 0.3616458 0.35315618 0.3448645 0.33676618 0.3288569 0.3211322 0.313588 0.30622 0.29902425 0.29199678 0.28513366 0.27843112 0.27188548 0.2654931 0.25925043 0.25315398 0.24720041 0.24138638 0.23570865 0.23016407 0.22474952 0.219462 0.21429856 0.20925628 0.20433237 0.19952404 0.19482863 0.19024347 0.18576601 0.18139374 0.17712417 0.17295495 0.16888368 0.16490811 0.16102599 0.15723512 0.15353338 0.14991868 0.14638896 0.14294226 0.13957663 0.13629015 0.13308097 0.12994729 0.12688732 0.123899356 0.120981686 0.11813267 0.1153507 0.11263419 0.10998161 0.10739146 0.10486227 0.10239261 0.09998108 0.09762631 0.09532698 0.09308177 0.090889424 0.088748686 0.08665835 0.08461723 0.08262416 0.08067802 0.07877771 0.07692213 0.07511026 0.07334104 0.07161349 0.06992662 0.068279475 0.06667112 0.06510064 0.06356714 0.062069762 0.060607646 0.059179965 0.057785906 0.05642468 0.05509552 0.05379766 0.052530367 0.051292926 0.05008463

</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="3.625" PeakHeight="229.422" Num="5" zHalfNm="212.44" Error="1.412">
-42.92 4.195 -3.041 1.695 -0.601
</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="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="2084.7751" C="-0.28041393" Error="0.0319"/>
<QuasiParabolic ID="3" StartDistance="6532.5" EndDistance="6558.0" A="3.5303043E10" B="-1.0928569E7" C="845.71075" Error="0.0319"/>
<QuasiParabolic ID="4" StartDistance="6558.0" EndDistance="6564.0" A="1.23764977E13" B="-3.77463526E9" C="287801.1" Error="0.0278"/>
<QuasiParabolic ID="5" StartDistance="6564.0" EndDistance="6567.0" A="1.02797473E13" B="-3.1357719E9" C="239136.89" Error="0.00491"/>
<QuasiParabolic ID="6" StartDistance="6567.0" EndDistance="6572.0" A="2.00481482E13" B="-6.1107681E9" C="465647.97" Error="0.00231"/>
<QuasiParabolic ID="7" StartDistance="6572.0" EndDistance="6583.0" A="4.5446605E13" B="-1.38400604E10" C="1053695.1" Error="0.00876"/>
<QuasiParabolic ID="8" StartDistance="6583.0" EndDistance="6599.422" A="-4.3383926E13" B="1.31477955E10" C="-996119.25" Error="0.0033"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="78.75" Depth="0.154"/>
<TopsideChapman PeakHeight="229.422" PeakDensity="163035.05" PeakScaleHeight="13.108" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
