<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-23 -113 01:05:00.000"
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: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.23 (113) 01:05:00</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="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202611304230105001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.650" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.893" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="14.209" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.600" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.600" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="217.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="217.500" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.475" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="245.891" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.600" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.600" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="224.881" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="208.542" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.238" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="23.398" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.878" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="12.506" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="22.200" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.600" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="43">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
217.500 217.500 217.500 220.000 220.000 220.000 220.000 220.000 222.500 222.500 222.500 223.125 223.750 224.375 225.000 225.000 225.000 227.500 227.500 227.500 227.500 230.000 230.000 230.000 232.500 232.500 232.500 233.377 234.349 235.432 236.647 238.018 239.579 241.371 243.450 245.891 248.798 252.317 256.666 262.175 269.384 279.219 293.437
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 0 66 69 72 0 0 54 54 45 45 0 0 0 69 72 75 99 102 90 90 93 93 102 102 90 87 102 96 99 96 84 87 99 96 84 84 84 84 81 78 75 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="328">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 135.08333 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 160.16667 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 185.25 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 224.881 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0
</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 0.353812 0.35324875 0.35231337 0.35101187 0.34927908 0.3471288 0.34465033 0.34171918 0.33843222 0.33468077 0.33043912 0.32582152 0.32063016 0.31500506 0.30879995 0.30202654 0.29470333 0.28661102 0.27785686 0.26831484 0.25787413 0.24648583 0.23391104 0.2201678 0.20492378 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 0.20511627 0.21125582 0.21739535 0.22353488 0.22967441 0.23581396 0.24195349 0.24809302 0.25423256 0.2603721 0.26651162 0.27265117 0.2787907 0.28493023 0.29106978 0.2972093 0.30334884 0.3094884 0.3156279 0.32176745 0.32790697 0.3340465 0.34018606 0.34632558 0.35246512 0.354 0.3829436 0.42782226 0.47966838 0.5376584 0.60078526 0.66824985 0.7395906 0.81470895 0.89368576 0.9767503 1.0642664 1.1566112 1.2541615 1.3573452 1.4664402 1.5816221 1.7028793 1.8298035 1.9617021 2.0973616 2.235127 2.373039 2.5089266 2.6407657 2.7667353 2.885459 2.9959824 3.0976937 3.1903627 3.2739217 3.3484876 3.4142504 3.4714468 3.5203242 3.561125 3.5940409 3.6192608 3.636927 3.6471355 3.65 3.649968 3.6471999 3.640132 3.628998 3.6140335 3.5954735 3.573551 3.5484962 3.5205348 3.4898872 3.456768 3.421385 3.3839386 3.3446212 3.303618 3.2611053 3.2172515 3.1722164 3.1261518 3.0792003 3.0314975 2.9831698 2.934337 2.88511 2.835593 2.7858834 2.736071 2.68624 2.6364667 2.5868232 2.537375 2.4881818 2.4392989 2.3907766 2.3426602 2.2949913 2.2478068 2.2011404 2.1550214 2.1094768 2.0645297 2.0202003 1.9765064 1.9334633 1.8910838 1.8493785 1.8083559 1.7680231 1.7283849 1.6894448 1.6512048 1.6136657 1.576827 1.5406871 1.5052432 1.4704919 1.4364285 1.4030484 1.3703452 1.3383129 1.3069441 1.2762316 1.2461675 1.2167435 1.1879508 1.1597807 1.1322241 1.1052715 1.0789135 1.0531402 1.0279421 1.0033091 0.97923154 0.95569927 0.93270236 0.9102309 0.8882747 0.86682415 0.8458691 0.8253999 0.80540675 0.7858799 0.76680994 0.74818724 0.7300025 0.71224654 0.69491005 0.6779841 0.6614598 0.6453284 0.6295812 0.61420983 0.59920585 0.58456105 0.57026744 0.55631703 0.542702 0.52941483 0.5164479 0.5037939 0.4914456 0.47939596 0.46763805 0.45616502 0.44497028 0.43404728 0.42338967 0.41299117 0.40284568 0.3929472 0.3832899 0.37386802 0.364676 0.35570836 0.34695968 0.3384248 0.33009854 0.32197592 0.31405205 0.30632213 0.2987815 0.29142562 0.28425 0.27725026 0.2704222 0.26376164 0.2572645 0.25092682 0.24474473 0.23871446 0.23283231 0.2270947 0.22149806 0.21603899 0.21071412 0.20552018 0.20045398 0.1955124 0.19069237 0.18599094 0.18140522 0.17693235 0.17256959 0.16831422 0.16416363 0.16011524 0.15616655 0.15231511 0.14855854 0.14489451 0.14132075 0.13783504 0.1344352 0.13111916 0.12788484 0.12473021 0.12165334 0.11865232 0.115725264 0.11287037 0.11008586 0.10736999 0.104721084 0.10213749 0.0996176 0.09715985 0.094762705 0.09242467 0.0901443 0.08792016 0.08575088 0.0836351 0.081571504 0.079558805 0.077595755 0.07568112 0.07381372 0.07199238 0.07021597 0.06848338 0.06679353 0.06514537 0.063537866 0.061970025 0.06044086 0.058949422 0.05749478 0.056076027 0.054692276 0.053342666 0.052026354 0.050742522

</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="3.65" PeakHeight="224.881" Num="5" zHalfNm="208.542" Error="0.771">
-41.394 3.124 -2.056 1.085 -0.39
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="8" 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="6505.083" A="-2.40913678E11" B="7.4356072E7" C="-5737.226" Error="0.00142"/>
<QuasiParabolic ID="2" StartDistance="6505.083" EndDistance="6530.167" A="0.0" B="-5055.2183" C="0.8171311" Error="0.075"/>
<QuasiParabolic ID="3" StartDistance="6530.167" EndDistance="6551.0" A="1.69056764E11" B="-5.1827068E7" C="3972.1445" Error="0.075"/>
<QuasiParabolic ID="4" StartDistance="6551.0" EndDistance="6554.0" A="-8.4436438E11" B="2.57567264E8" C="-19642.139" Error="0.00313"/>
<QuasiParabolic ID="5" StartDistance="6554.0" EndDistance="6563.0" A="1.15787484E13" B="-3.53343462E9" C="269570.7" Error="0.0206"/>
<QuasiParabolic ID="6" StartDistance="6563.0" EndDistance="6581.0" A="3.20134321E13" B="-9.7606728E9" C="743990.8" Error="0.0655"/>
<QuasiParabolic ID="7" StartDistance="6581.0" EndDistance="6594.881" A="-4.9440451E13" B="1.49935831E10" C="-1136745.9" Error="0.0073"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="75.25" Depth="0.154"/>
<TopsideChapman PeakHeight="224.881" PeakDensity="165291.56" PeakScaleHeight="12.506" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
