<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-07 -097 06:45:00.000"
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 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" >
2026.04.07 (097) 06:45:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.19" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.97" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202609704070645001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.912" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="17.994" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.900" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.900" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.200" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="232.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="232.500" 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="0.025" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="4.500" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="255.361" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.900" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.900" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="229.413" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="217.234" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.098" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="17.600" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.140" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="10.583" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="17.580" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.030" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="29">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 4.325 4.35 4.375 4.4 4.425 4.45 4.475 4.5 4.525 4.55 4.575 4.6
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
232.500 232.500 232.500 233.333 234.167 235.000 235.000 235.000 236.250 237.500 237.500 237.500 238.333 238.897 239.526 240.232 241.031 241.942 242.991 244.211 245.648 247.365 249.454 252.050 255.361 259.733 265.772 274.654 289.007
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
90 0 105 0 0 93 93 96 0 84 87 87 0 0 90 99 96 96 93 72 72 60 57 48 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 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="311">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 138.58333 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 167.16667 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 195.75 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 229.413 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0
</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 0.3533988 0.35268724 0.35168076 0.35038465 0.34873247 0.34680796 0.3446216 0.34204412 0.33923516 0.3360058 0.33251932 0.32860458 0.3243659 0.31978112 0.314722 0.3093164 0.3034716 0.29713094 0.29034886 0.28298154 0.27503994 0.26650268 0.25724816 0.24721296 0.23637795 0.22454801 0.21165071 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 0.2044898 0.20987755 0.2152653 0.22065306 0.22604081 0.23142858 0.23681633 0.24220408 0.24759184 0.2529796 0.25836736 0.2637551 0.26914287 0.27453062 0.27991837 0.28530613 0.29069388 0.29608163 0.3014694 0.30685714 0.3122449 0.31763265 0.3230204 0.32840815 0.3337959 0.3391837 0.34457144 0.3499592 0.354 0.3686261 0.43077052 0.49904788 0.57382566 0.6555029 0.7444611 0.84112024 0.94583786 1.0589292 1.1806643 1.3111799 1.4505894 1.5987467 1.755413 1.9201131 2.092145 2.2705832 2.4542396 2.6416857 2.831254 3.021094 3.2091577 3.3933697 3.5714846 3.7413554 3.9008315 4.0479283 4.180723 4.2975445 4.39688 4.4775133 4.538405 4.578797 4.5981855 4.6 4.5986342 4.590217 4.574544 4.5521035 4.523385 4.488871 4.4490376 4.404348 4.3552504 4.3021784 4.2455473 4.185752 4.1231694 4.058155 3.9910436 3.9221501 3.851769 3.780174 3.70762 3.634343 3.56056 3.4864714 3.4122608 3.3380952 3.2641275 3.1904957 3.1173246 3.0447268 2.9728026 2.9016416 2.8313234 2.7619178 2.6934862 2.6260812 2.559749 2.4945276 2.4304497 2.3675418 2.3058252 2.2453163 2.186027 2.1279657 2.0711365 2.0155406 1.9611764 1.9080395 1.8561227 1.8054177 1.7559134 1.7075975 1.6604562 1.6144743 1.5696356 1.525923 1.4833184 1.4418033 1.4013585 1.3619641 1.3236 1.2862463 1.249882 1.2144867 1.1800395 1.1465198 1.1139066 1.0821797 1.0513182 1.0213019 0.9921106 0.96372443 0.93612367 0.9092888 0.8832007 0.85784054 0.8331897 0.80923 0.78594357 0.7633127 0.74132025 0.71994936 0.6991834 0.6790063 0.6594022 0.6403555 0.62185127 0.60387456 0.58641106 0.56944656 0.5529674 0.5369601 0.5214116 0.50630915 0.4916403 0.4773929 0.4635552 0.45011562 0.43706298 0.4243864 0.41207525 0.40011916 0.38850805 0.3772322 0.366282 0.3556482 0.3453218 0.335294 0.32555634 0.31610042 0.30691823 0.29800192 0.28934383 0.2809366 0.272773 0.26484603 0.25714886 0.24967489 0.2424177 0.23537102 0.2285288 0.22188513 0.21543428 0.20917068 0.20308892 0.19718374 0.19145004 0.18588287 0.18047738 0.17522891 0.17013292 0.16518499 0.16038081 0.15571624 0.15118723 0.14678985 0.14252026 0.13837479 0.13434981 0.13044183 0.12664747 0.12296342 0.11938648 0.11591354 0.112541586 0.109267674 0.106088966 0.1030027 0.10000618 0.09709681 0.09427205 0.09152944 0.0888666 0.0862812 0.08377101 0.08133383 0.078967534 0.07667007 0.074439436 0.07227369 0.07017094 0.06812936 0.06614717 0.06422264 0.062354095 0.06053991 0.0587785 0.057068333 0.055407915 0.053795807 0.052230597 0.050710924

</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="4.6" PeakHeight="229.413" Num="5" zHalfNm="217.234" Error="0.369">
-33.461 -0.315 0.002 0.13 -0.019
</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="6508.583" A="-1.85709953E11" B="5.7317888E7" C="-4422.5513" Error="0.00149"/>
<QuasiParabolic ID="2" StartDistance="6508.583" EndDistance="6537.167" A="0.0" B="-3258.522" C="0.54067016" Error="0.0552"/>
<QuasiParabolic ID="3" StartDistance="6537.167" EndDistance="6565.0" A="9.6318333E10" B="-2.9529376E7" C="2263.3193" Error="0.0552"/>
<QuasiParabolic ID="4" StartDistance="6565.0" EndDistance="6569.0" A="2.10020273E13" B="-6.3983667E9" C="487323.28" Error="0.0492"/>
<QuasiParabolic ID="5" StartDistance="6569.0" EndDistance="6576.0" A="2.95292591E13" B="-8.9945713E9" C="684933.56" Error="0.0643"/>
<QuasiParabolic ID="6" StartDistance="6576.0" EndDistance="6591.0" A="7.1540306E13" B="-2.17716531E10" C="1656427.1" Error="0.0447"/>
<QuasiParabolic ID="7" StartDistance="6591.0" EndDistance="6599.413" A="-1.63300361E14" B="4.9489359E10" C="-3749506.0" Error="0.0109"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="85.75" Depth="0.154"/>
<TopsideChapman PeakHeight="229.413" PeakDensity="262531.03" PeakScaleHeight="10.583" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
