<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-13 -103 06:15:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 70% PACIFIC flags: F2 cusps do not match</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.13 (103) 06:15:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.19" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.98" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202610304130615001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.925" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.807" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.135" 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="3.500" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="235.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="235.000" 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="0.125" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="258.348" 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="235.112" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="219.863" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.265" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="21.808" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.534" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="11.562" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="21.670" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.170" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="21">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
235.000 236.250 237.500 238.750 240.000 240.000 242.500 242.500 245.000 245.000 247.500 247.500 250.000 252.327 255.069 258.348 262.341 267.308 273.656 282.051 293.676
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
72 0 0 0 72 72 72 72 72 78 72 75 72 69 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 -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="316">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 139.16667 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 168.33333 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 197.5 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 235.112 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0
</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 0.3538872 0.35347393 0.352762 0.35175505 0.3505324 0.3489521 0.3470975 0.34497866 0.3425364 0.33978727 0.33674988 0.3333779 0.32963315 0.32561377 0.321167 0.3164043 0.31120363 0.30563802 0.29957724 0.29311055 0.28615454 0.27862445 0.27052397 0.26174292 0.2523066 0.24211602 0.23105234 0.21895285 0.20588575 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 0.2 0.2 0.20352 0.2088 0.21408 0.21936 0.22464 0.22992 0.2352 0.24048 0.24576 0.25104 0.25632 0.2616 0.26688 0.27216 0.27744 0.28272 0.288 0.29328 0.29856 0.30384 0.30912 0.3144 0.31968 0.32496 0.33024 0.33552 0.3408 0.34608 0.35136 0.354 0.3716929 0.41097468 0.45543507 0.5048369 0.5587714 0.61682945 0.6787108 0.7441516 0.8130352 0.88531816 0.96096283 1.0399907 1.1223822 1.2081038 1.2970715 1.3891293 1.4839728 1.5812492 1.6804271 1.7808878 1.8818635 1.982459 2.0817814 2.1788461 2.272719 2.3624752 2.4473312 2.5265586 2.599552 2.6658573 2.7250755 2.7769234 2.8211865 2.8577216 2.8864207 2.9072175 2.920068 2.9249501 2.925 2.9233422 2.9176452 2.9081192 2.8950028 2.8785346 2.85895 2.8364818 2.8113575 2.7837985 2.7540193 2.7222264 2.6886187 2.6533856 2.6167083 2.5787587 2.539699 2.499683 2.4588547 2.4173496 2.3752944 2.332807 2.2899976 2.2469676 2.2038112 2.1606157 2.1174605 2.0744193 2.0315588 1.9889401 1.9466186 1.9046441 1.8630621 1.8219129 1.7812324 1.7410529 1.7014024 1.6623058 1.6237845 1.585857 1.5485388 1.511843 1.4757801 1.4403589 1.4055855 1.3714647 1.3379996 1.3051913 1.2730398 1.2415442 1.2107018 1.1805093 1.1509624 1.1220556 1.0937833 1.0661386 1.0391146 1.0127034 0.9868969 0.9616865 0.93706334 0.9130182 0.88954175 0.8666243 0.8442561 0.8224272 0.8011276 0.7803473 0.7600761 0.74030393 0.72102064 0.7022162 0.6838805 0.66600364 0.6485756 0.6315867 0.615027 0.5988871 0.58315736 0.5678284 0.5528911 0.5383362 0.52415484 0.5103381 0.4968774 0.4837641 0.4709899 0.45854658 0.44642606 0.43462038 0.42312187 0.4119229 0.40101603 0.39039394 0.3800496 0.36997592 0.3601662 0.35061365 0.34131184 0.33225435 0.32343498 0.31484762 0.30648634 0.29834536 0.29041898 0.28270167 0.27518806 0.26787287 0.26075095 0.2538173 0.247067 0.24049531 0.23409757 0.22786924 0.22180589 0.21590321 0.21015699 0.20456316 0.19911768 0.19381666 0.18865635 0.183633 0.17874303 0.17398293 0.16934927 0.16483873 0.16044804 0.15617405 0.15201369 0.14796393 0.14402187 0.14018464 0.13644949 0.13281369 0.12927464 0.12582976 0.12247655 0.11921259 0.116035506 0.112943 0.10993283 0.1070028 0.104150794 0.10137473 0.0986726 0.09604244 0.09348232 0.09099041 0.088564865 0.08620394 0.08390592 0.081669115 0.07949191 0.077372715 0.07530999 0.07330223 0.071347974 0.06944579 0.067594305 0.06579216 0.064038046 0.062330686 0.06066883 0.059051268 0.057476822 0.055944342 0.054452714 0.05300084 0.051587675 0.05021218

</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="2.925" PeakHeight="235.112" Num="5" zHalfNm="219.863" Error="0.633">
-37.738 0.555 -0.579 0.314 -0.164
</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="6509.167" A="-1.78385355E11" B="5.5057208E7" C="-4248.116" Error="0.00152"/>
<QuasiParabolic ID="2" StartDistance="6509.167" EndDistance="6538.333" A="0.0" B="629.1341" C="-0.056636136" Error="0.0103"/>
<QuasiParabolic ID="3" StartDistance="6538.333" EndDistance="6566.0" A="3.8494843E10" B="-1.1872303E7" C="915.37085" Error="0.0114"/>
<QuasiParabolic ID="4" StartDistance="6566.0" EndDistance="6569.0" A="8.5062184E12" B="-2.59113626E9" C="197325.97" Error="0.0373"/>
<QuasiParabolic ID="5" StartDistance="6569.0" EndDistance="6576.0" A="1.05565001E13" B="-3.21536563E9" C="244839.25" Error="0.00961"/>
<QuasiParabolic ID="6" StartDistance="6576.0" EndDistance="6594.0" A="1.91030729E13" B="-5.8146888E9" C="442476.34" Error="0.033"/>
<QuasiParabolic ID="7" StartDistance="6594.0" EndDistance="6605.112" A="-4.0393073E13" B="1.22308516E10" C="-925853.94" Error="0.0105"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="87.5" Depth="0.154"/>
<TopsideChapman PeakHeight="235.112" PeakDensity="106149.195" PeakScaleHeight="11.562" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
