<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-28 -118 22:20:00.000"
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="20.0">
<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: 95% PACIFIC flags: Multiple candidates for F2x cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.28 (118) 22:20:00</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">
FF202611804282220001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.650" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.786" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="13.820" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.975" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.975" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="230.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="230.000" 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="0.075" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.475" 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="2.975" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.975" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="235.661" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="219.534" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.236" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="23.130" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.867" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="12.246" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="22.660" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.260" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="28">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
230.000 230.000 232.500 232.500 233.333 234.167 235.000 235.000 236.250 237.500 237.500 242.500 242.500 242.500 245.000 245.000 247.500 250.000 252.500 255.000 257.500 262.500 267.500 272.500 280.000 285.000 295.790 310.742
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 57 66 66 0 0 66 66 0 63 63 63 69 69 69 66 63 60 75 78 63 60 0 60 48 51 51 45
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-3.125 -3.125 -3.125 -3.125 -3.125 -3.125 3.125 -3.125 3.125 3.125 -3.125 3.125 -3.125 -3.125 3.125 3.125 3.125 3.125 3.125 3.125 3.125 -3.125 3.125 3.125 -3.125 3.125 -3.125 3.125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="332">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 235.661 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0
</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 0.3516065 0.35023698 0.34851307 0.34651887 0.34419376 0.34155348 0.33854687 0.33526585 0.33153415 0.32752004 0.32306805 0.31823066 0.3130061 0.3072951 0.30113927 0.29447237 0.28732234 0.2796049 0.2711702 0.2621697 0.25230387 0.24165411 0.23006094 0.21740833 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 0.2055 0.211 0.2165 0.222 0.2275 0.233 0.2385 0.244 0.2495 0.255 0.2605 0.266 0.2715 0.277 0.2825 0.288 0.2935 0.299 0.3045 0.31 0.3155 0.321 0.3265 0.332 0.3375 0.343 0.3485 0.354 0.39623982 0.44097304 0.48830467 0.5383936 0.59142804 0.6476189 0.7071983 0.7704338 0.8375721 0.90889555 0.9846737 1.065159 1.1505893 1.241148 1.3369896 1.4381238 1.5444719 1.6557947 1.7716689 1.8914722 2.014421 2.1395051 2.2655566 2.3913343 2.5155954 2.6370745 2.754602 2.8671825 2.9739218 3.0740707 3.1670828 3.252501 3.329992 3.3993297 3.4603603 3.512967 3.557078 3.5926666 3.6197097 3.6381974 3.6481314 3.65 3.6497285 3.6458364 3.63752 3.6250296 3.6086156 3.5885277 3.5650136 3.5383167 3.5086756 3.476323 3.4414837 3.4043763 3.3652105 3.3241875 3.2815 3.2373314 3.1918564 3.1452396 3.097638 3.0491984 3.0000596 2.950351 2.9001944 2.8497033 2.7989829 2.7481315 2.6972396 2.6463912 2.5956633 2.5451274 2.494848 2.4448848 2.3952918 2.3461182 2.2974079 2.249201 2.2015333 2.1544366 2.107939 2.0620654 2.016837 1.9722728 1.9283887 1.885198 1.8427118 1.8009391 1.7598866 1.7195594 1.679961 1.641093 1.602956 1.565549 1.52887 1.4929159 1.4576824 1.4231646 1.3893569 1.3562526 1.3238446 1.2921252 1.2610865 1.2307196 1.2010156 1.1719651 1.1435585 1.115786 1.0886374 1.0621026 1.0361711 1.0108324 0.98607606 0.9618915 0.938268 0.9151949 0.89266175 0.87065786 0.8491727 0.82819575 0.8077167 0.78772527 0.7682111 0.7491643 0.73057467 0.71243244 0.69472784 0.6774514 0.6605934 0.6441448 0.62809616 0.6124387 0.5971633 0.58226144 0.5677244 0.55354387 0.5397115 0.52621925 0.51305914 0.50022334 0.4877043 0.47549447 0.4635865 0.45197323 0.44064766 0.42960283 0.41883206 0.40832874 0.39808643 0.3880988 0.3783597 0.36886308 0.35960305 0.35057387 0.34176987 0.33318555 0.32481557 0.31665462 0.3086976 0.30093953 0.29337543 0.2860006 0.27881032 0.27180004 0.26496533 0.25830182 0.2518053 0.2454716 0.23929669 0.23327664 0.22740759 0.22168578 0.21610756 0.21066935 0.20536765 0.20019908 0.19516031 0.1902481 0.18545929 0.18079078 0.1762396 0.17180279 0.16747749 0.16326094 0.15915038 0.15514317 0.15123673 0.14742854 0.14371613 0.14009708 0.13656908 0.13312984 0.12977712 0.12650876 0.12332264 0.1202167 0.11718892 0.114237346 0.11136005 0.10855518 0.10582092 0.10315548 0.10055714 0.09802422 0.09555506 0.09314807 0.09080168 0.08851437 0.08628465 0.08411108 0.081992246 0.07992677 0.07791329 0.07595053 0.0740372 0.07217205 0.07035388 0.0685815 0.066853754 0.06516953 0.063527726 0.06192727 0.06036713 0.058846284 0.05736375 0.055918556 0.054509766 0.053136464 0.051797755 0.050492767

</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="235.661" Num="5" zHalfNm="219.534" Error="1.247">
-41.848 0.824 -1.191 0.654 -0.1
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="17" 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="6508.0" A="-1.93482834E11" B="5.9716924E7" C="-4607.662" Error="0.00161"/>
<QuasiParabolic ID="2" StartDistance="6508.0" EndDistance="6536.0" A="0.0" B="1103.8091" C="-0.12958501" Error="0.0176"/>
<QuasiParabolic ID="3" StartDistance="6536.0" EndDistance="6538.0" A="-3.26863264E12" B="9.9985766E8" C="-76462.766" Error="0.0743"/>
<QuasiParabolic ID="4" StartDistance="6538.0" EndDistance="6555.0" A="2.0958149E11" B="-6.4141768E7" C="4907.644" Error="0.075"/>
<QuasiParabolic ID="5" StartDistance="6555.0" EndDistance="6556.0" A="-2.19111411E12" B="6.6833594E8" C="-50964.035" Error="7.85E-11"/>
<QuasiParabolic ID="6" StartDistance="6556.0" EndDistance="6557.0" A="2.3054857E12" B="-7.034151E8" C="53653.953" Error="0.0"/>
<QuasiParabolic ID="7" StartDistance="6557.0" EndDistance="6558.0" A="-2.19241028E12" B="6.6852211E8" C="-50962.273" Error="0.0"/>
<QuasiParabolic ID="8" StartDistance="6558.0" EndDistance="6559.0" A="2.30698857E12" B="-7.0366426E8" C="53656.996" Error="0.0"/>
<QuasiParabolic ID="9" StartDistance="6559.0" EndDistance="6560.0" A="-2.19365166E12" B="6.6869139E8" C="-50959.23" Error="6.83E-11"/>
<QuasiParabolic ID="10" StartDistance="6560.0" EndDistance="6561.0" A="2.30842329E12" B="-7.0389242E8" C="53658.438" Error="6.6E-11"/>
<QuasiParabolic ID="11" StartDistance="6561.0" EndDistance="6562.0" A="-3.22019787E12" B="9.8140589E8" C="-74774.6" Error="1.28E-10"/>
<QuasiParabolic ID="12" StartDistance="6562.0" EndDistance="6565.0" A="7.8477184E12" B="-2.39193037E9" C="182261.08" Error="0.0109"/>
<QuasiParabolic ID="13" StartDistance="6565.0" EndDistance="6570.0" A="9.1739621E12" B="-2.79596493E9" C="213032.95" Error="0.0234"/>
<QuasiParabolic ID="14" StartDistance="6570.0" EndDistance="6576.0" A="1.3974688E13" B="-4.25737318E9" C="324251.22" Error="0.0176"/>
<QuasiParabolic ID="15" StartDistance="6576.0" EndDistance="6593.0" A="3.11124306E13" B="-9.4695823E9" C="720556.6" Error="0.0373"/>
<QuasiParabolic ID="16" StartDistance="6593.0" EndDistance="6605.661" A="-5.4284503E13" B="1.64357519E10" C="-1244052.4" Error="0.0124"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="84.0" Depth="0.154"/>
<TopsideChapman PeakHeight="235.661" PeakDensity="165291.56" PeakScaleHeight="12.246" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
