<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-25 -056 04:25:00.000"
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 55 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 20% PACIFIC flags: F2o cusp not found, Multiple candidates for F2x cusp, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.02.25 (056) 04:25:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.16" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.96" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="85.88234" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202605602250425001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="27" >
<URSI ID="00" Val="3.825" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.500" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="13.386" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="2.475" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.975" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.400" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="305.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="305.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="34" Val="100.000" Name="h`Es" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.825" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="322.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="283.583" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="263.829" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.455" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="2.000" Description="Minimum frequency of Es-layer" Units="MHz" />
<URSI ID="94" Val="28.858" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.145" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="13.984" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="32.530" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.370" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="35">
<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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
312.500 305.000 305.000 315.000 310.000 310.000 310.000 310.000 310.000 310.000 310.000 310.000 312.500 312.500 312.500 312.500 312.500 315.000 315.000 315.000 315.000 316.250 317.500 317.500 317.500 317.500 320.000 320.000 320.000 320.000 320.625 321.250 321.875 322.500 322.500
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 75 78 72 87 87 90 87 81 75 81 81 90 87 93 93 90 90 81 78 63 63 63 66 66 63 60 0 57 60 0 0 0 81 69
</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
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="Es" Polarization="O" Num="20">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
102.500 102.500 100.000 100.000 100.000 100.000 100.000 100.000 100.000 102.500 102.500 102.500 102.500 105.000 105.417 105.833 106.250 106.667 107.083 107.500
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 60 57 57 60 78 75 63 60 48 45 42 45 36 0 0 0 0 0 45
</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 -10.9375 -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="412">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 146.335 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 182.67 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 219.005 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 283.583 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0
</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 0.35171902 0.350793 0.3495781 0.34822693 0.34667084 0.34491625 0.34297034 0.34084114 0.33853734 0.33600065 0.33324477 0.3302845 0.32707193 0.32365936 0.32000634 0.31610963 0.31199932 0.30759698 0.3028949 0.29794607 0.29263747 0.2870738 0.2811215 0.2748235 0.2681376 0.26105103 0.25344944 0.24538505 0.23683104 0.22758731 0.21775395 0.20724721 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 0.20139866 0.205637 0.20987533 0.21411367 0.218352 0.22259034 0.22682868 0.23106702 0.23530535 0.23954369 0.24378203 0.24802037 0.25225872 0.25649706 0.2607354 0.26497373 0.26921207 0.2734504 0.27768874 0.28192708 0.28616542 0.29040375 0.2946421 0.29888043 0.30311877 0.3073571 0.31159544 0.31583378 0.3200721 0.32431045 0.3285488 0.33278713 0.33702546 0.3412638 0.34550214 0.34974048 0.3539788 0.354 0.39249766 0.4244142 0.45447078 0.4841846 0.5143246 0.54539883 0.5778015 0.61187214 0.6479203 0.68623036 0.7270539 0.77060217 0.8170105 0.8663512 0.9185618 0.97346556 1.0307803 1.0901089 1.1510259 1.2130852 1.2758762 1.3390442 1.4022875 1.4654005 1.5282196 1.5906454 1.6526189 1.7141083 1.7751133 1.8356534 1.8957564 1.9554418 2.0147498 2.0737371 2.1324522 2.1909359 2.2492187 2.3073823 2.3654485 2.4234755 2.4815161 2.5396128 2.597806 2.6561546 2.7146986 2.7735038 2.8325958 2.8920317 2.9518726 3.0121453 3.0729084 3.1342018 3.1960442 3.2584639 3.3214316 3.3849154 3.44879 3.5127852 3.5764134 3.6388028 3.6983078 3.7520344 3.7951083 3.8207235 3.825 3.8246698 3.8212461 3.8142474 3.8038492 3.7902281 3.77356 3.7540207 3.731783 3.7070177 3.6798925 3.650571 3.619213 3.585973 3.5510015 3.514443 3.476437 3.437118 3.3966143 3.355049 3.3125389 3.269196 3.2251263 3.1804307 3.1352043 3.0895374 3.0435143 2.9972153 2.9507155 2.904085 2.8573897 2.8106914 2.764047 2.7175097 2.6711295 2.6249518 2.579019 2.5333705 2.4880416 2.4430654 2.3984718 2.3542883 2.3105395 2.267248 2.224434 2.182115 2.1403077 2.0990257 2.058282 2.0180867 1.9784493 1.9393778 1.9008783 1.8629562 1.8256153 1.7888588 1.7526885 1.7171054 1.6821097 1.6477009 1.6138774 1.5806373 1.5479779 1.5158961 1.4843881 1.4534496 1.423076 1.3932625 1.3640035 1.3352934 1.3071263 1.2794958 1.2523957 1.2258193 1.1997597 1.1742101 1.1491632 1.1246121 1.1005493 1.0769676 1.0538596 1.0312177 1.0090346 0.9873028 0.96601474 0.945163 0.92474014 0.9047387 0.8851513 0.86597055 0.8471892 0.82879996 0.8107956 0.7931691 0.7759133 0.7590212 0.74248606 0.7263009 0.710459 0.6949537 0.67977846 0.66492677 0.65039223 0.6361686 0.62224966 0.6086292 0.5953014 0.58226013 0.56949973 0.55701435 0.54479843 0.53284645 0.52115285 0.50971246 0.4985199 0.48757005 0.47685784 0.4663783 0.45612657 0.44609785 0.43628743 0.4266907 0.41730314 0.40812033 0.3991379 0.39035162 0.3817573 0.3733508 0.36512813 0.35708538 0.34921867 0.34152418 0.33399826 0.32663727 0.31943765 0.31239593 0.30550867 0.29877257 0.29218432 0.28574073 0.27943867 0.27327508 0.26724693 0.2613513 0.25558525 0.24994603 0.24443084 0.23903699 0.23376185 0.22860278 0.2235573 0.21862288 0.21379712 0.20907766 0.20446214 0.19994831 0.19553392 0.19121681 0.18699485 0.18286595 0.17882806 0.1748792 0.1710174 0.16724074 0.16354738 0.15993549 0.15640326 0.15294893 0.14957082 0.14626724 0.14303654 0.13987713 0.13678744 0.13376594 0.13081111 0.1279215 0.12509568 0.12233222 0.11962977 0.11698698 0.11440253 0.11187514 0.10940355 0.10698653 0.10462288 0.102311425 0.10005101 0.0978405 0.09567882 0.09356487 0.09149761 0.089476004 0.087499045 0.08556575 0.08367516 0.08182633 0.080018334 0.078250274 0.07652127 0.07483046 0.073176995 0.071560055 0.06997884 0.068432555 0.06692043 0.065441705 0.06399565 0.06258155 0.061198678 0.059846364 0.058523927 0.057230707 0.05596606 0.054729354 0.05351997 0.052337307 0.051180776 0.0500498

</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="3.825" PeakHeight="283.583" Num="5" zHalfNm="263.829" Error="2.373">
-56.663 -14.079 9.25 -4.824 1.738
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="10" 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="6516.335" A="-1.15174908E11" B="3.5547812E7" C="-2742.7612" Error="0.00174"/>
<QuasiParabolic ID="2" StartDistance="6516.335" EndDistance="6552.67" A="0.0" B="-2396.162" C="0.4077514" Error="0.0519"/>
<QuasiParabolic ID="3" StartDistance="6552.67" EndDistance="6585.0" A="6.4431251E10" B="-1.9712854E7" C="1507.829" Error="0.0519"/>
<QuasiParabolic ID="4" StartDistance="6585.0" EndDistance="6587.0" A="-1.10369584E12" B="3.3507136E8" C="-25430.988" Error="0.00102"/>
<QuasiParabolic ID="5" StartDistance="6587.0" EndDistance="6592.0" A="5.8994894E12" B="-1.79129421E9" C="135975.23" Error="0.0563"/>
<QuasiParabolic ID="6" StartDistance="6592.0" EndDistance="6599.0" A="2.46892069E12" B="-7.5046637E8" C="57028.945" Error="0.0541"/>
<QuasiParabolic ID="7" StartDistance="6599.0" EndDistance="6646.0" A="7.8917864E12" B="-2.39400806E9" C="181558.55" Error="0.0694"/>
<QuasiParabolic ID="8" StartDistance="6646.0" EndDistance="6651.0" A="2.58182595E11" B="-9.6805568E7" C="8732.603" Error="0.00289"/>
<QuasiParabolic ID="9" StartDistance="6651.0" EndDistance="6653.583" A="-1.64199804E14" B="4.9356808E10" C="-3709025.2" Error="0.00123"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="109.005" Depth="0.154"/>
<TopsideChapman PeakHeight="283.583" PeakDensity="181521.4" PeakScaleHeight="13.984" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
