<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-01 -121 23:05:00.000"
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: 90% PACIFIC flags: One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.01 (121) 23:05:00</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="75.82641" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202612105012305001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.625" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.597" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="13.038" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.875" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="280.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="280.000" 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="3.625" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="308.421" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="262.247" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="243.789" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.365" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="26.578" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.970" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="13.660" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="27.360" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.830" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="16">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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" >
280.000 281.563 283.125 284.688 286.250 287.813 289.375 290.938 292.500 294.095 295.857 297.814 300.000 302.458 305.242 308.421
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 0 81 81 0 0 87 87 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 -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="383">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 143.987 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 177.974 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 211.961 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 262.247 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0
</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 0.35306162 0.35235164 0.35142174 0.35027573 0.34891826 0.34735492 0.3455921 0.34356606 0.3413579 0.3389076 0.33622846 0.33333495 0.3301448 0.32674503 0.32306272 0.3190668 0.3148518 0.31033733 0.30551547 0.30033758 0.29489937 0.2890145 0.28279912 0.2761283 0.26902846 0.26151216 0.2534327 0.24479684 0.23556624 0.22559796 0.21494882 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 0.20011781 0.20464896 0.2091801 0.21371125 0.21824239 0.22277354 0.22730468 0.23183581 0.23636696 0.2408981 0.24542925 0.2499604 0.25449154 0.25902268 0.26355383 0.26808497 0.27261612 0.27714726 0.2816784 0.28620955 0.2907407 0.29527184 0.299803 0.30433413 0.30886528 0.31339642 0.31792757 0.3224587 0.32698986 0.331521 0.33605215 0.3405833 0.34511444 0.34964558 0.354 0.35567203 0.39625427 0.43506417 0.47407073 0.51426506 0.5562963 0.60065097 0.6477449 0.69791025 0.7514175 0.8084849 0.8692001 0.9335789 1.0015359 1.072851 1.1472412 1.2243499 1.3037841 1.3851591 1.4681073 1.5522623 1.6373243 1.7230507 1.8092154 1.8956187 1.9821458 2.0686302 2.1549673 2.2410572 2.326804 2.412101 2.4968371 2.580895 2.6641545 2.7464192 2.8275394 2.9072902 2.9853957 3.06154 3.1353772 3.2064567 3.274281 3.338264 3.3977587 3.452031 3.5002983 3.5417411 3.57557 3.6010454 3.6175654 3.6247072 3.625 3.6239367 3.6193273 3.6112328 3.599832 3.585305 3.5678298 3.5475845 3.5247438 3.4994795 3.4719603 3.4423504 3.4108088 3.3774905 3.3425446 3.3061152 3.26834 3.2293518 3.189277 3.1482363 3.1063445 3.0637107 3.0204384 2.9766252 2.9323635 2.8877401 2.8428364 2.7977295 2.7524908 2.7071874 2.661882 2.6166322 2.5714927 2.5265129 2.4817393 2.4372146 2.3929777 2.3490646 2.3055081 2.2623384 2.2195823 2.1772647 2.1354072 2.0940301 2.0531507 2.0127845 1.9729456 1.9336456 1.8948948 1.856702 1.8190743 1.7820176 1.7455366 1.7096347 1.6743144 1.639577 1.6054232 1.5718524 1.5388635 1.5064547 1.4746236 1.4433666 1.4126806 1.3825612 1.3530036 1.324003 1.2955539 1.2676506 1.240287 1.2134569 1.1871536 1.1613705 1.1361008 1.1113371 1.0870725 1.0632995 1.0400108 1.0171989 0.99485636 0.97297543 0.9515487 0.9305684 0.9100271 0.889917 0.87023073 0.8509606 0.83209914 0.8136389 0.7955725 0.7778926 0.7605918 0.743663 0.72709906 0.7108928 0.69503736 0.6795258 0.6643513 0.6495071 0.6349867 0.6207835 0.60689104 0.593303 0.58001316 0.56701535 0.5543036 0.54187185 0.5297143 0.51782525 0.50619906 0.49483013 0.48371306 0.47284248 0.46221316 0.45181993 0.44165772 0.43172163 0.42200673 0.41250828 0.4032216 0.39414212 0.38526532 0.3765868 0.36810222 0.35980737 0.3516981 0.34377033 0.3360201 0.32844353 0.32103676 0.31379607 0.3067178 0.29979837 0.2930343 0.28642204 0.27995837 0.27363992 0.26746348 0.2614259 0.2555241 0.24975505 0.24411581 0.23860349 0.23321524 0.22794831 0.22279999 0.21776763 0.21284863 0.20804048 0.20334068 0.19874682 0.1942565 0.18986742 0.18557733 0.18138398 0.17728521 0.17327891 0.16936299 0.16553544 0.16179425 0.15813749 0.15456326 0.15106972 0.14765503 0.14431745 0.14105521 0.13786663 0.13475007 0.13170388 0.12872648 0.12581635 0.12297194 0.12019178 0.11747443 0.11481846 0.11222251 0.1096852 0.10720522 0.10478128 0.10241211 0.10009648 0.09783318 0.095621035 0.093458876 0.091345586 0.08928006 0.08726122 0.08528801 0.083359405 0.08147439 0.07963199 0.07783124 0.076071195 0.07435094 0.072669566 0.07102621 0.06942001 0.06785012 0.066315725 0.06481602 0.06335022 0.061917562 0.0605173 0.059148695 0.057811037 0.056503627 0.055225775 0.05397682 0.052756105 0.051562995 0.05039686

</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="262.247" Num="5" zHalfNm="243.789" Error="0.966">
-48.62 -3.059 2.006 -1.122 0.509
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="11" 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="6513.987" A="-1.31540967E11" B="4.0599064E7" C="-3132.5186" Error="0.00178"/>
<QuasiParabolic ID="2" StartDistance="6513.987" EndDistance="6547.974" A="0.0" B="-1240.3029" C="0.23044296" Error="0.0256"/>
<QuasiParabolic ID="3" StartDistance="6547.974" EndDistance="6578.0" A="5.7260151E10" B="-1.7552668E7" C="1345.183" Error="0.0256"/>
<QuasiParabolic ID="4" StartDistance="6578.0" EndDistance="6581.0" A="-3.51342985E11" B="1.06680568E8" C="-8097.903" Error="0.00257"/>
<QuasiParabolic ID="5" StartDistance="6581.0" EndDistance="6583.0" A="1.46673668E13" B="-4.4575831E9" C="338677.94" Error="0.0368"/>
<QuasiParabolic ID="6" StartDistance="6583.0" EndDistance="6585.0" A="8.4816704E11" B="-2.59132672E8" C="19792.143" Error="0.00726"/>
<QuasiParabolic ID="7" StartDistance="6585.0" EndDistance="6589.0" A="5.5554914E12" B="-1.6888439E9" C="128350.33" Error="0.00888"/>
<QuasiParabolic ID="8" StartDistance="6589.0" EndDistance="6622.0" A="1.3769684E13" B="-4.18214861E9" C="317552.38" Error="0.0382"/>
<QuasiParabolic ID="9" StartDistance="6622.0" EndDistance="6630.0" A="-4.5546316E13" B="1.37326807E10" C="-1035122.75" Error="0.00602"/>
<QuasiParabolic ID="10" StartDistance="6630.0" EndDistance="6632.247" A="-6.6351054E13" B="2.000862E10" C="-1508421.4" Error="3.78E-5"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="101.961" Depth="0.154"/>
<TopsideChapman PeakHeight="262.247" PeakDensity="163035.05" PeakScaleHeight="13.66" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
