<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-21 -111 07:15:00.000"
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: One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.21 (111) 07:15:00</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">
FF202611104210715001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.025" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.920" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.858" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.050" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.050" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.350" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="210.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="210.000" 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="0.025" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="245.942" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.050" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.050" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="219.982" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="201.784" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.892" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="25.983" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.677" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="14.105" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="23.280" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.220" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="40">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
210.000 210.000 210.000 210.000 210.000 210.833 211.667 212.500 213.333 214.167 215.000 215.000 215.000 215.833 216.667 217.500 217.500 217.500 220.000 220.000 222.500 222.500 225.000 225.000 227.500 227.500 227.500 230.000 232.500 232.500 235.000 237.500 239.774 242.531 245.942 250.273 255.951 263.724 275.011 292.891
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 63 63 75 75 0 0 0 0 0 51 54 54 0 0 81 81 69 69 69 72 72 66 69 69 72 72 72 69 54 0 39 0 0 0 0 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 7.8125 -7.8125 -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="338">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 133.33333 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 156.66667 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 219.982 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0
</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 0.3538169 0.35312194 0.35206616 0.35058403 0.34861574 0.3462502 0.3433677 0.34006724 0.336247 0.33195284 0.32717335 0.32179055 0.31589526 0.3093662 0.30218917 0.2942784 0.28568256 0.27623004 0.26589635 0.25450236 0.24202472 0.22809964 0.21270788 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.20614286 0.21257143 0.219 0.22542857 0.23185714 0.23828572 0.24471429 0.25114286 0.25757143 0.264 0.27042857 0.27685714 0.2832857 0.28971428 0.29614285 0.30257142 0.309 0.31542858 0.32185715 0.32828572 0.3347143 0.34114286 0.34757143 0.354 0.38761368 0.42841035 0.4762723 0.5299898 0.5880288 0.64925426 0.71312857 0.7795716 0.8488161 0.9212881 0.99747765 1.0780236 1.1635394 1.2546725 1.3520141 1.4559247 1.566394 1.6827513 1.8033849 1.9258521 2.046977 2.1636934 2.273499 2.3748443 2.4670858 2.5502076 2.6245968 2.6908379 2.749516 2.8012533 2.846579 2.8859897 2.9198854 2.9486148 2.972462 2.9916666 3.0064046 3.0168169 3.0229952 3.025 3.0249996 3.0234845 3.0191352 3.0120864 3.002474 2.990434 2.9761016 2.9596114 2.9410958 2.9206853 2.898507 2.874686 2.849343 2.822596 2.7945585 2.7653403 2.7350466 2.703779 2.6716344 2.6387057 2.6050813 2.5708456 2.5360785 2.5008554 2.4652488 2.429326 2.3931513 2.356784 2.3202815 2.2836964 2.2470782 2.2104728 2.173924 2.1374712 2.1011522 2.065001 2.0290496 1.9933275 1.9578613 1.922676 1.8877939 1.8532358 1.8190202 1.7851638 1.7516819 1.718588 1.6858941 1.653611 1.6217476 1.5903122 1.5593117 1.528752 1.4986376 1.4689726 1.4397597 1.4110014 1.382699 1.354853 1.3274637 1.3005304 1.274052 1.248027 1.2224531 1.1973281 1.1726489 1.1484122 1.1246146 1.1012521 1.0783205 1.0558156 1.0337327 1.012067 0.99081355 0.9699673 0.949523 0.9294752 0.9098185 0.8905474 0.8716563 0.8531395 0.83499134 0.8172061 0.799778 0.7827013 0.76597023 0.74957895 0.7335219 0.7177931 0.7023871 0.687298 0.67252034 0.6580484 0.64387673 0.6299997 0.616412 0.6031081 0.5900828 0.57733077 0.56484675 0.55262566 0.54066235 0.5289518 0.5174892 0.5062696 0.49528813 0.48454013 0.47402096 0.46372598 0.4536507 0.44379073 0.43414164 0.42469913 0.41545904 0.4064172 0.39756954 0.38891202 0.38044077 0.37215188 0.3640416 0.3561062 0.348342 0.34074545 0.33331305 0.3260413 0.31892687 0.31196642 0.3051567 0.29849452 0.29197675 0.28560036 0.2793623 0.27325967 0.26728952 0.2614491 0.2557356 0.2501463 0.24467856 0.23932976 0.23409736 0.22897886 0.22397181 0.21907382 0.21428253 0.20959565 0.20501092 0.20052615 0.19613919 0.19184789 0.18765022 0.18354413 0.17952766 0.17559884 0.1717558 0.16799667 0.16431963 0.16072291 0.15720475 0.15376346 0.15039735 0.1471048 0.1438842 0.140734 0.13765267 0.1346387 0.13169062 0.12880701 0.12598646 0.1232276 0.12052908 0.11788958 0.11530782 0.112782545 0.11031252 0.10789654 0.10553341 0.103222005 0.100961186 0.09874984 0.09658688 0.094471276 0.092401974 0.09037797 0.08839827 0.08646191 0.084567934 0.08271543 0.08090348 0.0791312 0.077397734 0.07570221 0.074043825 0.07242175 0.070835195 0.06928338 0.06776556 0.06628097 0.06482889 0.06340861 0.062019445 0.0606607 0.059331715 0.05803184 0.05676043 0.055516873 0.054300554 0.053110875 0.05194726 0.050809126

</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="3.025" PeakHeight="219.982" Num="5" zHalfNm="201.784" Error="0.841">
-43.509 6.125 -3.809 1.832 -0.621
</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="6503.333" A="-2.72938779E11" B="8.424036E7" C="-6499.9023" Error="0.00135"/>
<QuasiParabolic ID="2" StartDistance="6503.333" EndDistance="6526.667" A="0.0" B="-606.87396" C="0.13496056" Error="0.00867"/>
<QuasiParabolic ID="3" StartDistance="6526.667" EndDistance="6545.0" A="9.3182558E10" B="-2.8657892E7" C="2203.4158" Error="0.00892"/>
<QuasiParabolic ID="4" StartDistance="6545.0" EndDistance="6549.0" A="-1.06646303E10" B="3075398.0" C="-220.82333" Error="5.27E-4"/>
<QuasiParabolic ID="5" StartDistance="6549.0" EndDistance="6555.0" A="1.02138475E13" B="-3.1193897E9" C="238171.69" Error="0.0066"/>
<QuasiParabolic ID="6" StartDistance="6555.0" EndDistance="6559.0" A="1.06375508E13" B="-3.24866637E9" C="248032.6" Error="0.00245"/>
<QuasiParabolic ID="7" StartDistance="6559.0" EndDistance="6564.0" A="2.04171861E13" B="-6.2307164E9" C="475357.7" Error="0.00636"/>
<QuasiParabolic ID="8" StartDistance="6564.0" EndDistance="6571.0" A="3.949709E13" B="-1.20442153E10" C="918189.7" Error="0.00357"/>
<QuasiParabolic ID="9" StartDistance="6571.0" EndDistance="6589.982" A="-2.57535215E13" B="7.8159611E9" C="-593009.25" Error="0.00815"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="70.0" Depth="0.15"/>
<TopsideChapman PeakHeight="219.982" PeakDensity="113531.33" PeakScaleHeight="14.105" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
