<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-21 -111 01:45:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 65% PACIFIC flags: F2x cusp not found, Multiple candidates for F2o cusp, 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) 01:45:00</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">
FF202611104210145001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.150" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="4.368" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="13.758" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.875" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.875" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.425" 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="3.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="217.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.875" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.875" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="199.575" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="192.226" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.981" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="10.526" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.479" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="10.583" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="11.040" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.770" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="12">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.875 2.9 2.925 2.95 2.975 3.0 3.025 3.05 3.075 3.1 3.125 3.15
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
210.000 210.000 211.250 212.500 212.500 212.500 212.500 213.015 213.672 214.539 215.737 217.500
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 63 0 78 84 84 81 75 0 0 87 87
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="267">
<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 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 199.575 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0
</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 0.44805184 0.5427124 0.6504277 0.77701586 0.92478424 1.0912611 1.2702259 1.4550884 1.6411676 1.8259498 2.008225 2.187359 2.3625956 2.5327017 2.6953905 2.8464184 2.9787536 3.0813718 3.1404665 3.15 3.149508 3.1445806 3.1346302 3.1199915 3.1009994 3.0779855 3.0512764 3.0211911 2.9880388 2.9521172 2.9137132 2.8730998 2.8305366 2.7862694 2.7405305 2.6935372 2.6454933 2.5965889 2.5470002 2.496891 2.4464123 2.3957028 2.34489 2.2940905 2.24341 2.192945 2.1427822 2.093 2.0436685 1.9948502 1.9466006 1.8989686 1.8519971 1.8057233 1.760179 1.7153918 1.6713842 1.628175 1.5857797 1.5442096 1.5034736 1.4635777 1.4245253 1.3863174 1.3489532 1.31243 1.2767434 1.2418876 1.2078552 1.1746382 1.1422269 1.1106114 1.0797807 1.0497229 1.020426 0.99187726 0.96406347 0.93697125 0.9105869 0.8848966 0.8598861 0.8355415 0.81184846 0.7887928 0.7663603 0.7445368 0.7233084 0.7026609 0.68258065 0.66305393 0.64406717 0.625607 0.6076604 0.5902143 0.573256 0.556773 0.54075295 0.5251838 0.51005375 0.49535114 0.48106465 0.46718314 0.45369574 0.44059178 0.42786092 0.41549295 0.40347797 0.39180627 0.3804684 0.36945516 0.35875753 0.3483667 0.3382742 0.32847163 0.3189509 0.30970407 0.30072346 0.29200155 0.283531 0.27530476 0.2673159 0.2595576 0.25202343 0.24470691 0.23760189 0.23070231 0.22400232 0.21749619 0.21117839 0.20504351 0.19908632 0.19330171 0.18768471 0.18223052 0.17693445 0.17179196 0.1667986 0.1619501 0.15724225 0.15267102 0.14823247 0.14392275 0.13973814 0.13567503 0.1317299 0.12789935 0.12418004 0.12056878 0.11706243 0.113657944 0.11035238 0.107142866 0.10402662 0.10100095 0.09806321 0.09521086 0.09244142 0.08975249 0.08714172 0.08460686 0.082145706 0.079756096 0.07743598 0.07518332 0.07299616 0.07087261 0.06881081 0.066808976 0.06486536 0.06297827 0.061146062 0.059367143 0.057639968 0.05596303 0.054334864 0.05275406 0.051219236

</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="3.15" PeakHeight="199.575" Num="5" zHalfNm="192.226" Error="0.494">
-18.733 -1.512 0.999 -0.574 0.245
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="7" 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="7526.06" C="-1.1156188" Error="0.0988"/>
<QuasiParabolic ID="3" StartDistance="6526.667" EndDistance="6549.0" A="-7.2426504E10" B="2.2001804E7" C="-1670.7681" Error="0.0988"/>
<QuasiParabolic ID="4" StartDistance="6549.0" EndDistance="6555.0" A="3.9006868E13" B="-1.19124285E10" C="909493.56" Error="0.106"/>
<QuasiParabolic ID="5" StartDistance="6555.0" EndDistance="6566.0" A="6.6507078E13" B="-2.03030364E10" C="1549509.4" Error="0.0771"/>
<QuasiParabolic ID="6" StartDistance="6566.0" EndDistance="6569.575" A="-2.71577191E14" B="8.2677244E10" C="-6292425.0" Error="0.00925"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="70.0" Depth="0.15"/>
<TopsideChapman PeakHeight="199.575" PeakDensity="123107.94" PeakScaleHeight="10.583" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
