<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-01 -091 07:45:00.000"
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: 100%</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.01 (091) 07:45:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.18" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.97" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202609104010745001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.925" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.870" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.321" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.275" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.275" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.325" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="215.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="215.000" 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="2.800" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="250.562" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.275" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.275" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="222.988" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="206.632" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.736" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="23.392" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.572" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="12.517" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="22.760" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.430" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="27">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
215.000 216.000 217.000 218.000 219.000 220.000 222.500 223.750 225.000 226.250 227.500 228.750 230.000 230.000 232.500 234.167 235.833 238.056 240.569 243.434 246.730 250.562 255.072 260.458 267.004 275.127 285.478
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 0 0 0 0 75 75 0 0 0 0 0 75 75 72 0 0 72 0 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 10.9375 -1.5625 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
</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 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 134.5 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 183.5 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 222.988 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0
</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 0.35317364 0.35223874 0.35086352 0.34905878 0.3468389 0.3442219 0.3411586 0.33767787 0.33367795 0.32927206 0.3243802 0.3189446 0.3129916 0.30645373 0.29930657 0.29149976 0.28296635 0.27368933 0.26350668 0.2523124 0.24007721 0.22657463 0.21160045 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 0.20628572 0.21257143 0.21885714 0.22514285 0.23142858 0.23771429 0.244 0.2502857 0.25657144 0.26285714 0.26914287 0.27542856 0.2817143 0.288 0.2942857 0.30057144 0.30685714 0.31314287 0.31942856 0.3257143 0.332 0.3382857 0.34457144 0.35085714 0.354 0.37141827 0.41011983 0.45365515 0.5013862 0.5526887 0.60704994 0.6641711 0.7239725 0.7864574 0.8517695 0.92008525 0.991626 1.0666027 1.1452504 1.2277257 1.3141485 1.4045033 1.4986411 1.5961896 1.6965154 1.7987704 1.9018111 2.004355 2.1050363 2.2025146 2.2956035 2.3833632 2.4650683 2.5402591 2.6086526 2.6701496 2.7247393 2.7724943 2.813525 2.8479595 2.8759234 2.8975232 2.9128616 2.9220054 2.925 2.9249997 2.9231644 2.9178693 2.9093013 2.897648 2.883098 2.865837 2.8460503 2.8239179 2.7996168 2.7733192 2.7451916 2.7153947 2.6840837 2.6514065 2.6175058 2.5825162 2.5465665 2.5097785 2.4722676 2.4341426 2.3955057 2.3564525 2.3170736 2.2774522 2.237667 2.1977909 2.157891 2.11803 2.0782654 2.03865 1.9992329 1.9600582 1.9211667 1.8825952 1.8443773 1.8065431 1.7691196 1.7321311 1.6955991 1.6595426 1.6239781 1.5889201 1.5543811 1.5203716 1.4869002 1.4539742 1.421599 1.3897792 1.3585174 1.3278155 1.2976744 1.2680936 1.239072 1.2106076 1.1826978 1.1553389 1.128527 1.1022577 1.0765258 1.0513257 1.0266515 1.0024971 0.97885567 0.9557206 0.93308467 0.9109407 0.88928115 0.8680985 0.84738505 0.8271329 0.80733424 0.7879812 0.76906574 0.75057995 0.73251575 0.7148653 0.6976206 0.68077374 0.66431683 0.6482421 0.6325419 0.6172084 0.6022341 0.58761156 0.57333326 0.55939186 0.54578024 0.5324912 0.5195177 0.50685287 0.49448994 0.48242214 0.47064292 0.4591458 0.44792444 0.43697256 0.42628407 0.41585296 0.4056733 0.3957393 0.3860453 0.37658572 0.36735517 0.35834822 0.3495597 0.34098446 0.33261752 0.32445395 0.31648895 0.30871782 0.30113593 0.29373884 0.28652212 0.27948144 0.27261266 0.2659116 0.2593743 0.2529968 0.24677524 0.2407059 0.2347851 0.22900926 0.22337489 0.21787854 0.2125169 0.2072867 0.20218475 0.19720794 0.19235323 0.18761767 0.18299834 0.17849243 0.17409717 0.16980985 0.16562785 0.16154863 0.15756963 0.15368845 0.14990266 0.14620996 0.14260806 0.13909474 0.13566785 0.13232523 0.12906486 0.12588471 0.12278281 0.11975725 0.11680616 0.1139277 0.1111201 0.108381614 0.10571055 0.10310526 0.100564115 0.098085545 0.09566802 0.09331003 0.091010116 0.08876685 0.086578846 0.08444474 0.0823632 0.08033294 0.078352705 0.07642126 0.0745374 0.07269996 0.07090779 0.069159776 0.067454845 0.06579193 0.06416999 0.06258802 0.06104504 0.059540085 0.058072224 0.05664054 0.05524414 0.05388216 0.052553747 0.05125808

</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="222.988" Num="5" zHalfNm="206.632" Error="1.112">
-40.328 1.805 -1.55 0.891 -0.306
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="12" 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="6504.5" A="-2.52482355E11" B="7.7926656E7" C="-6012.734" Error="0.00135"/>
<QuasiParabolic ID="2" StartDistance="6504.5" EndDistance="6529.0" A="0.0" B="15.3758955" C="0.037644986" Error="2.22E-4"/>
<QuasiParabolic ID="3" StartDistance="6529.0" EndDistance="6530.0" A="2.17678571E12" B="-6.6682771E8" C="51068.363" Error="1.82E-10"/>
<QuasiParabolic ID="4" StartDistance="6530.0" EndDistance="6552.0" A="4.8965747E10" B="-1.5121744E7" C="1167.4476" Error="0.0195"/>
<QuasiParabolic ID="5" StartDistance="6552.0" EndDistance="6553.0" A="9.1589463E11" B="-2.79752032E8" C="21362.068" Error="0.0"/>
<QuasiParabolic ID="6" StartDistance="6553.0" EndDistance="6555.0" A="1.58256081E13" B="-4.830252E9" C="368569.44" Error="0.00728"/>
<QuasiParabolic ID="7" StartDistance="6555.0" EndDistance="6557.0" A="2.68169904E12" B="-8.1990611E8" C="62669.688" Error="0.0133"/>
<QuasiParabolic ID="8" StartDistance="6557.0" EndDistance="6566.0" A="1.10603922E13" B="-3.37555456E9" C="257549.08" Error="0.017"/>
<QuasiParabolic ID="9" StartDistance="6566.0" EndDistance="6572.0" A="2.6095223E13" B="-7.955156E9" C="606285.06" Error="0.0036"/>
<QuasiParabolic ID="10" StartDistance="6572.0" EndDistance="6580.0" A="1.52987805E13" B="-4.6695675E9" C="356316.4" Error="0.0164"/>
<QuasiParabolic ID="11" StartDistance="6580.0" EndDistance="6592.988" A="-3.253694E13" B="9.870165E9" C="-748526.5" Error="0.00725"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="73.5" Depth="0.154"/>
<TopsideChapman PeakHeight="222.988" PeakDensity="106149.195" PeakScaleHeight="12.517" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
