<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-06 -126 01:10:00.000"
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" >
2026.05.06 (126) 01:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.21" 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">
FF202612605060110001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.325" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.517" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.694" 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="3.675" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="275.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="275.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.175" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="296.065" 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="267.360" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="248.981" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.533" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="26.361" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.825" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="13.865" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="26.490" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.050" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="15">
<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 3.325
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
275.000 275.000 278.000 281.000 284.000 287.000 290.000 292.500 296.065 299.985 304.315 309.123 314.493 320.529 327.364
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 72 0 0 0 0 96 96 0 0 90 90 0 90 90
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="387">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 146.771 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 183.542 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 220.313 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 267.36 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0
</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 0.35257575 0.35179353 0.35086703 0.34965155 0.3483728 0.34681517 0.34513053 0.34325263 0.34118918 0.33887967 0.33640453 0.33370706 0.3308671 0.32770404 0.32443038 0.3208761 0.3170692 0.31303924 0.30876163 0.30422106 0.29936114 0.29426694 0.2887895 0.2830234 0.2769831 0.27048016 0.26363173 0.2562681 0.24849278 0.24020544 0.23137124 0.22196598 0.21179815 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 0.20191814 0.20610623 0.2102943 0.2144824 0.21867047 0.22285856 0.22704664 0.23123473 0.2354228 0.2396109 0.24379897 0.24798706 0.25217515 0.2563632 0.2605513 0.2647394 0.26892748 0.27311555 0.27730364 0.28149173 0.2856798 0.28986788 0.29405597 0.29824406 0.30243212 0.3066202 0.3108083 0.3149964 0.31918445 0.32337254 0.32756063 0.33174872 0.33593678 0.34012488 0.34431297 0.34850106 0.35268912 0.354 0.37896195 0.4172619 0.4579035 0.5009301 0.546392 0.59433377 0.6447921 0.69784534 0.7535365 0.81190217 0.87298864 0.9368088 1.0033864 1.072722 1.1447724 1.2195082 1.2968385 1.3766515 1.4588089 1.5431542 1.6294379 1.7174553 1.8068764 1.8973925 1.9886439 2.080241 2.1717708 2.2627642 2.3527858 2.4413497 2.5279942 2.6122358 2.6936095 2.7716758 2.8459916 2.9161296 2.981725 3.0424016 3.0978553 3.147772 3.191895 3.229997 3.261889 3.287397 3.306405 3.3188157 3.3245664 3.325 3.3243148 3.32057 3.3137004 3.3038633 3.2912157 3.2759147 3.2581165 3.237975 3.2156413 3.1912642 3.1649885 3.1369555 3.1073017 3.0761597 3.0436568 3.009916 2.9750552 2.9391873 2.9024196 2.8648553 2.8265917 2.7877216 2.7483332 2.7085092 2.6683278 2.6278632 2.5871842 2.5463562 2.50544 2.4644926 2.4235668 2.3827124 2.3419747 2.3013966 2.261017 2.2208726 2.1809962 2.1414185 2.1021676 2.0632687 2.024745 1.9866173 1.9489045 1.9116234 1.874789 1.8384145 1.8025118 1.7670908 1.7321603 1.6977278 1.6637992 1.6303797 1.5974731 1.5650826 1.5332099 1.5018563 1.4710221 1.4407071 1.4109101 1.3816296 1.3528632 1.3246082 1.2968615 1.2696195 1.2428778 1.2166325 1.1908785 1.165611 1.1408246 1.1165138 1.0926732 1.0692965 1.0463778 1.023911 1.0018898 0.9803077 0.9591583 0.9384351 0.9181314 0.8982407 0.8787562 0.85967135 0.84097946 0.8226738 0.80474776 0.78719467 0.770008 0.75318116 0.7367076 0.72058094 0.7047947 0.6893425 0.67421806 0.6594151 0.6449276 0.63074946 0.6168745 0.60329694 0.5900109 0.5770105 0.56429017 0.55184424 0.53966725 0.52775365 0.5160982 0.50469553 0.49354053 0.48262808 0.47195312 0.4615108 0.45129627 0.44130474 0.43153155 0.42197213 0.41262197 0.4034767 0.39453188 0.38578334 0.3772269 0.36885843 0.36067396 0.35266954 0.34484127 0.33718544 0.3296983 0.3223762 0.31521562 0.30821306 0.30136508 0.29466832 0.28811955 0.2817155 0.2754531 0.2693292 0.26334077 0.2574849 0.2517587 0.24615932 0.24068396 0.23532993 0.23009457 0.22497527 0.21996951 0.21507476 0.21028861 0.20560865 0.20103256 0.19655806 0.19218288 0.18790486 0.18372186 0.17963175 0.17563252 0.17172214 0.16789867 0.16416016 0.16050476 0.15693061 0.15343592 0.15001893 0.14667794 0.14341123 0.1402172 0.1370942 0.13404067 0.13105509 0.12813592 0.1252817 0.122491 0.119762406 0.11709453 0.11448604 0.1119356 0.109441936 0.10700378 0.104619905 0.102289096 0.10001018 0.097782 0.095603436 0.09347338 0.09139076 0.089354515 0.08736361 0.08541705 0.083513826 0.081653 0.07983362 0.078054756 0.07631552 0.07461502 0.0729524 0.07132681 0.069737434 0.06818346 0.06666411 0.0651786 0.06372619 0.062306125 0.0609177 0.059560213 0.058232967 0.056935288 0.055666525 0.054426026 0.053213168 0.05202733 0.050867915

</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="3.325" PeakHeight="267.36" Num="5" zHalfNm="248.981" Error="0.668">
-46.987 -0.12 -0.089 0.186 -0.037
</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="6516.771" A="-1.12467837E11" B="3.4712296E7" C="-2678.2927" Error="0.00175"/>
<QuasiParabolic ID="2" StartDistance="6516.771" EndDistance="6553.542" A="0.0" B="775.0674" C="-0.078893766" Error="0.0157"/>
<QuasiParabolic ID="3" StartDistance="6553.542" EndDistance="6589.0" A="2.67189473E10" B="-8232628.5" C="634.1399" Error="0.0157"/>
<QuasiParabolic ID="4" StartDistance="6589.0" EndDistance="6600.0" A="7.8401718E12" B="-2.37989837E9" C="180605.75" Error="0.0478"/>
<QuasiParabolic ID="5" StartDistance="6600.0" EndDistance="6625.0" A="1.53577754E13" B="-4.6579599E9" C="353186.16" Error="0.0363"/>
<QuasiParabolic ID="6" StartDistance="6625.0" EndDistance="6637.36" A="-3.8512468E13" B="1.16047555E10" C="-874188.56" Error="0.0107"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="110.313" Depth="0.154"/>
<TopsideChapman PeakHeight="267.36" PeakDensity="137166.56" PeakScaleHeight="13.865" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
