<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-29 -119 01:35:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 80% PACIFIC flags: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.29 (119) 01:35:00</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">
FF202611904290135001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.676" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="15.808" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.600" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="227.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="227.500" 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="3.975" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="257.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="242.987" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="222.019" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.036" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="29.962" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.546" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="16.058" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="27.470" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.880" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="47">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
227.500 227.500 227.500 230.000 230.000 230.000 230.000 230.000 232.500 232.500 232.500 235.000 235.000 235.000 235.000 237.500 237.500 237.500 240.000 240.000 242.500 242.500 243.750 245.000 245.000 246.250 247.500 250.000 252.500 252.500 255.000 257.500 257.500 257.500 262.500 265.000 267.500 270.000 275.000 277.500 282.500 287.500 294.398 302.969 313.906 328.344 348.284
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 81 78 78 81 81 78 90 87 93 90 87 90 78 78 81 81 78 78 78 69 78 0 66 66 0 54 81 78 84 84 81 87 87 84 84 84 81 81 84 78 81 81 0 0 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 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 10.9375
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="409">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 137.41667 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 164.83333 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 192.25 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 242.987 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0
</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 0.35339895 0.35261247 0.35145745 0.35001534 0.348294 0.34623033 0.34376696 0.34099412 0.3378617 0.33439493 0.33055604 0.32631677 0.32166007 0.316581 0.31108782 0.3051483 0.29865354 0.2916688 0.28410435 0.27593207 0.26707086 0.25740978 0.24700987 0.23557876 0.22317484 0.20959583 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 0.20093617 0.20655319 0.21217021 0.21778724 0.22340426 0.22902128 0.2346383 0.24025533 0.24587233 0.25148937 0.2571064 0.26272342 0.26834044 0.27395746 0.27957445 0.28519148 0.2908085 0.29642552 0.30204254 0.30765957 0.3132766 0.3188936 0.32451063 0.33012766 0.33574468 0.3413617 0.34697872 0.35259575 0.354 0.38417333 0.42637232 0.47058424 0.5166873 0.56471765 0.61478853 0.6670701 0.7217628 0.7791196 0.8394118 0.9029487 0.9700619 1.0411463 1.1165932 1.1968391 1.2823185 1.3735129 1.4708824 1.57479 1.685589 1.8033723 1.9280589 2.0591135 2.1957154 2.3364644 2.4796789 2.6233637 2.7655053 2.9042597 3.0380282 3.165658 3.2863514 3.3996475 3.5053225 3.6033962 3.693958 3.7772038 3.8534024 3.9227743 3.9855955 4.042109 4.092541 4.1371064 4.1759906 4.209362 4.237349 4.2600784 4.277649 4.290126 4.2975664 4.3 4.2999997 4.298351 4.293575 4.285801 4.2751603 4.261783 4.245801 4.227344 4.206541 4.18352 4.158406 4.1313224 4.102391 4.0717287 4.039451 4.0056705 3.9704955 3.9340308 3.8963785 3.8576367 3.8179 3.777259 3.7358017 3.6936114 3.650768 3.6073482 3.5634248 3.5190678 3.474343 3.4293134 3.3840384 3.3385746 3.2929757 3.2472918 3.2015707 3.1558568 3.1101928 3.0646179 3.0191693 2.9738815 2.928787 2.883916 2.8392963 2.7949543 2.7509143 2.7071984 2.6638272 2.6208196 2.578193 2.535963 2.4941444 2.4527502 2.4117923 2.3712807 2.3312254 2.2916348 2.2525158 2.213875 2.175718 2.1380491 2.1008725 2.064191 2.028007 1.9923222 1.9571378 1.9224541 1.8882711 1.8545884 1.8214048 1.788719 1.7565291 1.7248328 1.6936276 1.6629105 1.6326784 1.6029278 1.573655 1.5448561 1.5165268 1.488663 1.46126 1.434313 1.4078176 1.3817685 1.3561609 1.3309894 1.306249 1.2819343 1.25804 1.2345606 1.2114908 1.1888249 1.1665576 1.144683 1.123196 1.1020907 1.0813618 1.0610036 1.0410106 1.0213772 1.0020981 0.98316765 0.96458054 0.94633126 0.92841446 0.9108249 0.8935572 0.8766061 0.8599665 0.84363323 0.82760113 0.8118652 0.79642045 0.781262 0.7663849 0.7517843 0.7374556 0.723394 0.7095948 0.6960535 0.6827656 0.6697266 0.6569322 0.64437795 0.6320596 0.619973 0.60811394 0.5964784 0.5850624 0.57386184 0.5628729 0.5520917 0.5415146 0.53113765 0.5209574 0.5109702 0.5011724 0.49156064 0.48213145 0.4728815 0.4638074 0.45490596 0.44617397 0.43760827 0.42920578 0.42096344 0.41287825 0.40494734 0.39716777 0.38953674 0.38205144 0.37470916 0.36750722 0.36044294 0.35351378 0.34671715 0.34005058 0.3335116 0.32709783 0.32080686 0.3146364 0.30858418 0.30264795 0.2968255 0.29111466 0.28551334 0.28001943 0.27463093 0.26934582 0.26416212 0.2590779 0.2540913 0.24920043 0.24440347 0.23969863 0.23508416 0.23055832 0.22611944 0.22176585 0.21749592 0.21330805 0.20920068 0.20517226 0.20122127 0.19734627 0.19354576 0.18981834 0.1861626 0.18257718 0.17906071 0.17561188 0.17222941 0.16891202 0.16565844 0.16246748 0.15933791 0.15626857 0.1532583 0.15030596 0.14741044 0.14457065 0.14178553 0.13905402 0.1363751 0.13374774 0.13117097 0.12864381 0.1261653 0.12373453 0.12135055 0.119012475 0.116719425 0.114470534 0.11226495 0.11010185 0.1079804 0.10589981 0.10385929 0.10185807 0.0998954 0.09797053 0.09608274 0.09423131 0.09241554 0.09063475 0.08888826 0.087175414 0.08549557 0.08384808 0.08223233 0.080647714 0.07909362 0.07756947 0.07607468 0.07460869 0.073170945 0.07176089 0.07037802 0.069021784 0.06769168 0.0663872 0.06510786 0.06385317 0.062622644 0.06141584 0.060232285 0.059071537 0.05793315 0.056816705 0.055721767 0.05464793 0.053594787 0.052561935 0.051548984 0.050555553

</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="4.3" PeakHeight="242.987" Num="5" zHalfNm="222.019" Error="1.859">
-53.84 5.449 -3.941 1.967 -0.372
</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="6507.417" A="-2.01785164E11" B="6.2279372E7" C="-4805.382" Error="0.00146"/>
<QuasiParabolic ID="2" StartDistance="6507.417" EndDistance="6534.833" A="0.0" B="-344.48532" C="0.092950836" Error="0.00589"/>
<QuasiParabolic ID="3" StartDistance="6534.833" EndDistance="6561.0" A="5.8598466E10" B="-1.80273E7" C="1386.4882" Error="0.0123"/>
<QuasiParabolic ID="4" StartDistance="6561.0" EndDistance="6566.0" A="9.4755724E12" B="-2.88861824E9" C="220148.19" Error="0.03"/>
<QuasiParabolic ID="5" StartDistance="6566.0" EndDistance="6569.0" A="3.43652722E12" B="-1.04912851E9" C="80071.29" Error="0.0125"/>
<QuasiParabolic ID="6" StartDistance="6569.0" EndDistance="6573.0" A="1.12339546E13" B="-3.42313574E9" C="260769.06" Error="0.00873"/>
<QuasiParabolic ID="7" StartDistance="6573.0" EndDistance="6582.0" A="2.4437028E13" B="-7.4405018E9" C="566365.1" Error="0.0389"/>
<QuasiParabolic ID="8" StartDistance="6582.0" EndDistance="6592.0" A="5.1750757E13" B="-1.57400238E10" C="1196836.2" Error="0.0305"/>
<QuasiParabolic ID="9" StartDistance="6592.0" EndDistance="6612.987" A="-4.0447389E13" B="1.22327132E10" C="-924882.3" Error="0.0124"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="82.25" Depth="0.154"/>
<TopsideChapman PeakHeight="242.987" PeakDensity="229404.47" PeakScaleHeight="16.058" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
