<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-06 -096 07:30:00.000"
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: 90% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.06 (096) 07:30:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.19" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.97" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202609604060730001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.974" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="17.487" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.425" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.425" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.725" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="205.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="205.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="4.325" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="250.164" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.425" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.425" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="216.606" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="200.430" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.801" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="23.185" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.248" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="12.313" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="21.930" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.540" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="80">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 3.95 3.975 4.0 4.025 4.05 4.075 4.1 4.125 4.15 4.175 4.2 4.225 4.25 4.275 4.3 4.325 4.35 4.375 4.4
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
205.000 205.000 205.000 205.000 205.000 205.000 207.500 207.500 207.500 207.500 207.500 207.500 207.500 207.500 207.500 207.500 207.500 207.500 210.000 210.000 210.000 210.000 210.000 210.000 210.000 210.000 210.000 210.000 212.500 212.500 212.500 212.500 212.500 212.500 212.500 212.500 215.000 215.000 215.000 215.000 215.000 215.000 217.500 217.500 217.500 217.500 217.500 217.500 220.000 220.000 220.000 220.000 220.000 222.500 222.500 222.500 222.500 222.500 225.000 225.000 225.000 227.500 228.750 230.000 230.000 232.500 232.500 235.000 235.000 235.000 235.000 240.000 242.500 242.500 245.000 247.168 250.164 254.571 261.697 275.178
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 78 66 66 66 66 69 69 69 69 69 66 63 66 66 66 42 45 54 0 0 63 66 66 90 90 87 87 90 90 93 93 93 93 93 90 102 102 90 90 78 84 75 78 78 78 78 75 75 78 81 81 66 63 60 57 72 72 87 87 93 96 75 84 84 81 87 90 93 90 105 108 96 93 93 93 87 90 75 78
</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 -1.5625 1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="324">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 132.16667 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 154.33333 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 176.5 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 216.606 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0
</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 0.35376927 0.35314414 0.35199788 0.3504718 0.34844965 0.34601614 0.3430702 0.33964738 0.3357888 0.33131224 0.32640406 0.3208713 0.31475306 0.30806717 0.30063042 0.2924594 0.2835998 0.27378997 0.26306203 0.251229 0.23810448 0.22358955 0.219 0.219 0.219 0.219 0.219 0.219 0.219 0.219 0.219 0.219 0.219 0.219 0.219 0.219 0.219 0.219 0.219 0.219 0.219 0.219 0.219 0.219 0.219 0.219 0.22306015 0.22915037 0.23524061 0.24133083 0.24742106 0.25351128 0.2596015 0.26569173 0.27178195 0.27787217 0.2839624 0.29005262 0.29614285 0.30223307 0.3083233 0.31441355 0.32050377 0.326594 0.33268422 0.33877444 0.34486467 0.3509549 0.354 0.37948197 0.43371382 0.49204066 0.5543548 0.62076575 0.691537 0.7669953 0.8475843 0.93379825 1.026131 1.1251678 1.231454 1.3455074 1.4678065 1.5986311 1.7381097 1.8859361 2.0414538 2.2035463 2.3704858 2.540221 2.7104037 2.8786001 3.0425193 3.200232 3.3501298 3.4911036 3.6223567 3.743365 3.8539197 3.9539433 4.0434732 4.122617 4.191522 4.2503476 4.2992606 4.3383965 4.3678823 4.387817 4.398266 4.4 4.399563 4.3946233 4.384423 4.3692575 4.3494244 4.3252196 4.2969375 4.264866 4.2292876 4.1904783 4.1487055 4.1042275 4.057294 4.0081425 3.9570024 3.9040911 3.849616 3.7937737 3.7367494 3.6787183 3.6198452 3.5602846 3.5001812 3.4396698 3.3788767 3.3179183 3.256903 3.195931 3.1350946 3.0744786 3.014161 2.9542131 2.894699 2.8356783 2.777204 2.7193239 2.662081 2.6055138 2.5496564 2.4945383 2.4401863 2.3866224 2.3338666 2.2819352 2.2308414 2.1805966 2.1312094 2.082686 2.0350306 1.9882461 1.9423332 1.8972911 1.8531177 1.8098097 1.7673621 1.7257696 1.6850255 1.645122 1.6060513 1.5678042 1.5303712 1.4937421 1.4579066 1.4228535 1.3885715 1.3550491 1.3222743 1.2902352 1.2589192 1.2283143 1.1984076 1.169187 1.1406395 1.1127528 1.0855142 1.058911 1.0329307 1.0075612 0.9827897 0.95860416 0.93499243 0.91194236 0.8894422 0.8674801 0.8460445 0.82512385 0.804707 0.78478265 0.76534003 0.7463682 0.7278567 0.709795 0.6921728 0.6749802 0.65820724 0.64184415 0.62588155 0.61031 0.59512043 0.5803038 0.5658514 0.55175453 0.5380048 0.52459407 0.51151407 0.49875706 0.4863152 0.47418094 0.4623469 0.45080584 0.43955067 0.42857447 0.41787046 0.40743208 0.3972528 0.38732633 0.37764654 0.36820734 0.3590029 0.35002744 0.34127533 0.33274114 0.32441947 0.31630507 0.3083929 0.30067796 0.29315534 0.28582036 0.2786683 0.27169475 0.2648952 0.25826538 0.25180107 0.24549818 0.2393527 0.23336074 0.22751847 0.22182219 0.21626827 0.21085316 0.20557341 0.20042565 0.19540662 0.19051309 0.18574195 0.18109013 0.17655468 0.17213269 0.16782132 0.16361783 0.15951952 0.15552378 0.15162803 0.14782977 0.1441266 0.14051612 0.136996 0.13356403 0.13021795 0.12695566 0.12377505 0.12067408 0.117650755 0.11470313 0.111829326 0.10902749 0.106295824 0.10363256 0.10103601 0.09850448 0.09603637 0.093630075 0.09128405 0.08899679 0.086766824 0.08459272 0.08247308 0.08040653 0.07839176 0.07642745 0.07451236 0.07264525 0.07082491 0.06905018 0.06731991 0.06563299 0.063988335 0.06238489 0.060821615 0.05929751 0.057811588 0.0563629 0.05495051 0.053573508 0.05223101 0.050922148

</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="4.4" PeakHeight="216.606" Num="5" zHalfNm="200.43" Error="0.243">
-42.07 3.169 -2.022 1.012 -0.195
</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="6502.167" A="-2.79250174E11" B="8.6188328E7" C="-6650.2085" Error="0.00132"/>
<QuasiParabolic ID="2" StartDistance="6502.167" EndDistance="6524.333" A="0.0" B="-3510.1113" C="0.58786" Error="0.0395"/>
<QuasiParabolic ID="3" StartDistance="6524.333" EndDistance="6542.0" A="1.55253703E11" B="-4.7665136E7" C="3658.5134" Error="0.0395"/>
<QuasiParabolic ID="4" StartDistance="6542.0" EndDistance="6545.0" A="-8.7880676E11" B="2.6846464E8" C="-20503.04" Error="0.00549"/>
<QuasiParabolic ID="5" StartDistance="6545.0" EndDistance="6551.0" A="1.30775693E13" B="-3.99627955E9" C="305298.66" Error="0.0318"/>
<QuasiParabolic ID="6" StartDistance="6551.0" EndDistance="6556.0" A="1.66917728E13" B="-5.0996849E9" C="389515.22" Error="0.0109"/>
<QuasiParabolic ID="7" StartDistance="6556.0" EndDistance="6566.0" A="5.3109204E13" B="-1.62093343E10" C="1236803.9" Error="0.0399"/>
<QuasiParabolic ID="8" StartDistance="6566.0" EndDistance="6573.0" A="4.3521411E13" B="-1.32888975E10" C="1014413.06" Error="0.0226"/>
<QuasiParabolic ID="9" StartDistance="6573.0" EndDistance="6586.606" A="-7.3849832E13" B="2.24242442E10" C="-1702241.6" Error="0.00999"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="66.5" Depth="0.135"/>
<TopsideChapman PeakHeight="216.606" PeakDensity="240198.52" PeakScaleHeight="12.313" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
