<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-21 -111 00:30:00.000"
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 F2x cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.21 (111) 00:30:00</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">
FF202611104210030001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.925" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.846" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="15.095" 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="4.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="207.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="207.500" 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="3.775" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="255.148" 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="224.629" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="202.836" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.559" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="30.939" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.327" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="16.718" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="26.530" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.600" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="78">
<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 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 3.75 3.775 3.8 3.825 3.85 3.875 3.9 3.925
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
207.500 207.500 207.500 207.500 207.500 207.500 207.500 207.500 207.500 207.500 210.000 210.000 210.000 210.000 210.000 210.000 210.000 210.000 210.000 210.000 212.500 212.500 212.500 212.500 212.500 212.500 215.000 215.000 215.000 215.000 215.000 215.000 215.000 217.500 217.500 217.500 217.500 217.500 217.500 217.500 220.000 220.000 220.000 220.000 220.000 222.500 222.500 222.500 222.500 225.000 225.000 225.000 225.000 227.500 227.500 227.500 230.000 230.000 232.500 232.500 235.000 235.000 237.500 237.500 240.000 242.500 242.500 245.000 246.915 249.171 251.868 255.148 259.223 264.423 271.288 280.771 294.721 317.267
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
81 81 81 81 81 84 84 81 84 72 69 57 57 54 54 78 78 81 81 66 66 66 0 66 72 81 78 69 69 69 72 72 72 42 45 57 0 0 0 66 66 78 78 93 93 93 93 84 81 93 96 99 96 84 84 108 111 99 96 87 84 87 84 87 84 81 84 84 81 69 66 60 0 72 69 87 81 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 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="396">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 132.75 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 155.5 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 178.25 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 224.629 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0
</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 0.35375562 0.35316312 0.35201776 0.35053736 0.34852743 0.34607637 0.3432073 0.3398182 0.3359499 0.3315876 0.3266711 0.32122076 0.31516615 0.30852863 0.30124253 0.2931789 0.2843912 0.27475142 0.26413658 0.252487 0.23960334 0.22532961 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.21414286 0.22042857 0.22671428 0.233 0.23928571 0.24557143 0.25185713 0.25814286 0.2644286 0.27071428 0.277 0.2832857 0.28957143 0.29585713 0.30214286 0.3084286 0.31471428 0.321 0.3272857 0.33357143 0.33985713 0.34614286 0.3524286 0.354 0.3901399 0.43715334 0.48425335 0.53241044 0.5823395 0.6346196 0.6898413 0.7485975 0.8115333 0.87936246 0.9529288 1.033176 1.1211737 1.21812 1.3253031 1.4438516 1.5745798 1.7174643 1.871031 2.032187 2.1962945 2.3583608 2.5141497 2.6607976 2.7969093 2.9221187 3.0366905 3.1412773 3.2365518 3.32328 3.4021494 3.4737766 3.5387309 3.5974703 3.6504161 3.6979454 3.7403588 3.7779202 3.810848 3.8393443 3.8635604 3.883634 3.899664 3.9117382 3.9199166 3.924243 3.925 3.924812 3.9224665 3.9175203 3.9100785 3.9002473 3.888132 3.8738391 3.8574736 3.8391397 3.8189406 3.796978 3.7733514 3.7481592 3.721497 3.6934583 3.664134 3.6336129 3.6019807 3.5693204 3.5357127 3.5012352 3.4659624 3.4299667 3.3933172 3.35608 3.3183188 3.2800944 3.241465 3.202486 3.1632102 3.123688 3.0839667 3.0440922 3.0041072 2.9640524 2.9239662 2.883885 2.8438427 2.8038719 2.7640028 2.7242634 2.6846805 2.645279 2.6060822 2.5671115 2.5283873 2.489928 2.451751 2.4138722 2.3763063 2.339067 2.3021665 2.2656162 2.229426 2.1936054 2.158163 2.1231058 2.088441 2.0541737 2.0203094 1.9868526 1.9538069 1.9211755 1.8889607 1.8571649 1.8257891 1.7948345 1.7643015 1.7341903 1.7045007 1.6752317 1.6463825 1.6179516 1.5899374 1.562338 1.5351511 1.5083743 1.482005 1.4560403 1.430477 1.4053122 1.380542 1.3561634 1.3321723 1.3085651 1.285338 1.2624869 1.2400078 1.2178963 1.1961485 1.17476 1.1537263 1.1330434 1.1127065 1.0927114 1.0730536 1.0537287 1.034732 1.0160592 0.9977057 0.97966707 0.9619388 0.9445164 0.9273955 0.9105716 0.8940402 0.87779707 0.8618377 0.8461578 0.8307531 0.8156193 0.80075216 0.7861475 0.77180105 0.75770885 0.7438667 0.73027056 0.71691644 0.7038005 0.6909187 0.6782672 0.6658422 0.65363985 0.6416566 0.6298886 0.6183323 0.60698414 0.5958406 0.58489805 0.57415324 0.5636026 0.553243 0.5430709 0.53308326 0.5232768 0.51364833 0.50419486 0.49491322 0.48580045 0.47685358 0.4680697 0.45944595 0.45097947 0.4426675 0.4345073 0.4264962 0.4186315 0.41091064 0.403331 0.39589012 0.3885855 0.38141468 0.37437528 0.36746493 0.36068133 0.35402218 0.34748524 0.34106833 0.33476928 0.32858592 0.3225162 0.31655803 0.31070945 0.3049684 0.29933298 0.29380125 0.28837132 0.28304136 0.27780953 0.27267408 0.2676332 0.2626852 0.2578284 0.25306112 0.2483817 0.24378857 0.23928013 0.23485485 0.2305112 0.22624768 0.22206283 0.2179552 0.2139234 0.209966 0.20608166 0.20226905 0.19852683 0.19485371 0.19124845 0.18770976 0.18423644 0.18082729 0.17748113 0.1741968 0.17097315 0.16780908 0.1647035 0.1616553 0.15866347 0.15572692 0.15284467 0.15001571 0.14723904 0.14451373 0.1418388 0.13921335 0.13663645 0.1341072 0.13162473 0.12918818 0.1267967 0.12444945 0.12214562 0.11988442 0.11766504 0.115486726 0.11334871 0.11125025 0.10919062 0.1071691 0.10518499 0.10323759 0.10132623 0.09945023 0.09760895 0.095801756 0.094027996 0.09228707 0.09057836 0.088901274 0.08725523 0.085639656 0.08405398 0.08249766 0.08097014 0.079470895 0.077999406 0.076555155 0.07513764 0.07374636 0.07238084 0.07104059 0.06972516 0.06843408 0.0671669 0.065923184 0.06470249 0.06350439 0.062328473 0.06117433 0.06004155 0.05892975 0.057838526 0.05676751 0.05571632 0.054684598 0.053671975 0.052678097 0.051702626 0.050745215

</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="3.925" PeakHeight="224.629" Num="5" zHalfNm="202.836" Error="0.401">
-52.266 9.671 -5.807 2.266 -0.243
</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="6502.75" A="-2.76986757E11" B="8.5489736E7" C="-6596.305" Error="0.00133"/>
<QuasiParabolic ID="2" StartDistance="6502.75" EndDistance="6525.5" A="0.0" B="-4753.261" C="0.77553976" Error="0.0585"/>
<QuasiParabolic ID="3" StartDistance="6525.5" EndDistance="6547.0" A="1.51884677E11" B="-4.6616464E7" C="3576.923" Error="0.0585"/>
<QuasiParabolic ID="4" StartDistance="6547.0" EndDistance="6549.0" A="1.17487006E13" B="-3.58925133E9" C="274131.0" Error="0.0463"/>
<QuasiParabolic ID="5" StartDistance="6549.0" EndDistance="6556.0" A="7.1802558E12" B="-2.19409357E9" C="167614.12" Error="0.0145"/>
<QuasiParabolic ID="6" StartDistance="6556.0" EndDistance="6562.0" A="2.15148816E13" B="-6.5670728E9" C="501123.84" Error="0.0169"/>
<QuasiParabolic ID="7" StartDistance="6562.0" EndDistance="6570.0" A="6.7049741E13" B="-2.04454216E10" C="1558602.4" Error="0.00477"/>
<QuasiParabolic ID="8" StartDistance="6570.0" EndDistance="6594.629" A="-3.03814578E13" B="9.2140001E9" C="-698583.44" Error="0.00963"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="68.25" Depth="0.143"/>
<TopsideChapman PeakHeight="224.629" PeakDensity="191136.78" PeakScaleHeight="16.718" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
