<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-29 -119 08:00:00.000"
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: Multiple candidates for F2x cusp, Multiple candidates for F2o cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.29 (119) 08:00:00</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">
FF202611904290800001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.879" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="13.187" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.975" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.975" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.675" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="227.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="227.500" 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="0.075" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.225" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="246.243" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.975" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.975" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="229.628" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="213.579" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.711" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="22.944" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.756" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="12.428" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="20.710" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.160" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="18">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.975 3.0 3.025 3.05 3.075 3.1 3.125 3.15 3.175 3.2 3.225 3.25 3.275 3.3 3.325 3.35 3.375 3.4
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
227.500 230.000 231.014 232.145 233.415 234.852 236.490 238.376 240.570 243.155 246.243 250.000 254.668 260.624 268.487 279.347 295.322 321.138
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
84 81 84 84 84 87 99 99 84 87 84 84 81 84 75 78 93 84
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="329">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 137.41667 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 164.83333 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 192.25 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 229.628 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0
</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 0.35339895 0.35261247 0.35145745 0.35001534 0.348294 0.34623033 0.34376696 0.34099412 0.3378617 0.33439493 0.33055604 0.32631677 0.32166007 0.316581 0.31108782 0.3051483 0.29865354 0.2916688 0.28410435 0.27593207 0.26707086 0.25740978 0.24700987 0.23557876 0.22317484 0.20959583 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 0.20093617 0.20655319 0.21217021 0.21778724 0.22340426 0.22902128 0.2346383 0.24025533 0.24587233 0.25148937 0.2571064 0.26272342 0.26834044 0.27395746 0.27957445 0.28519148 0.2908085 0.29642552 0.30204254 0.30765957 0.3132766 0.3188936 0.32451063 0.33012766 0.33574468 0.3413617 0.34697872 0.35259575 0.354 0.3818521 0.42686918 0.48082116 0.5420568 0.6083639 0.6782017 0.75094384 0.82659245 0.9055095 0.98825824 1.0755484 1.1681739 1.2669674 1.3728445 1.486674 1.6090596 1.740232 1.8795252 2.025086 2.173663 2.3210607 2.462925 2.5957878 2.7175436 2.8273015 2.9251223 3.0115387 3.0872917 3.1532154 3.210069 3.2585254 3.2991614 3.3324583 3.3588088 3.3785093 3.3917863 3.3987799 3.4 3.3997045 3.3960474 3.3883917 3.3769605 3.361977 3.343664 3.322242 3.297928 3.2709355 3.2414718 3.2097385 3.1759307 3.1402364 3.102836 3.0639021 3.0235999 2.9820864 2.9395103 2.896013 2.851727 2.8067777 2.7612832 2.7153533 2.6690912 2.6225932 2.5759485 2.5292404 2.4825454 2.4359345 2.3894732 2.3432212 2.2972338 2.251561 2.206248 2.161337 2.1168644 2.0728643 2.0293667 1.9863982 1.9439826 1.9021404 1.8608897 1.8202462 1.780223 1.7408313 1.7020799 1.6639763 1.6265259 1.5897328 1.5535994 1.5181268 1.4833153 1.4491636 1.4156697 1.3828304 1.350642 1.3190998 1.2881985 1.2579323 1.2282946 1.1992787 1.1708771 1.143082 1.1158856 1.0892792 1.0632545 1.0378025 1.0129142 0.9885806 0.9647924 0.9415402 0.91881466 0.8966063 0.8749057 0.8537033 0.83298975 0.8127555 0.79299134 0.7736877 0.7548354 0.73642534 0.71844834 0.7008953 0.6837574 0.66702586 0.65069187 0.6347469 0.6191825 0.6039903 0.5891621 0.57468987 0.56056553 0.54678136 0.53332967 0.52020293 0.50739366 0.49489465 0.48269874 0.4707989 0.45918834 0.44786027 0.4368081 0.4260254 0.41550583 0.40524316 0.39523134 0.38546443 0.37593663 0.36664224 0.3575757 0.34873155 0.3401045 0.3316893 0.32348087 0.31547427 0.30766457 0.3000471 0.29261714 0.28537017 0.2783018 0.27140763 0.26468349 0.25812516 0.25172868 0.2454901 0.23940553 0.23347123 0.22768353 0.22203885 0.21653368 0.2111646 0.20592827 0.20082144 0.19584095 0.19098368 0.1862466 0.18162678 0.17712131 0.17272738 0.16844226 0.16426325 0.16018775 0.15621321 0.15233713 0.14855708 0.14487071 0.14127569 0.13776977 0.13435076 0.1310165 0.1277649 0.12459391 0.12150155 0.11848587 0.115544975 0.112677015 0.10988018 0.107152715 0.10449291 0.10189908 0.09936959 0.09690286 0.09449733 0.09215148 0.08986383 0.08763294 0.08545741 0.08333586 0.08126696 0.079249404 0.077281915 0.075363256 0.07349221 0.0716676 0.06988828 0.06815312 0.06646103 0.06481093 0.0632018 0.061632607 0.060102366 0.058610108 0.057154894 0.055735804 0.05435194 0.053002432 0.051686425 0.050403085

</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="3.4" PeakHeight="229.628" Num="5" zHalfNm="213.579" Error="1.645">
-39.863 4.536 -3.153 1.713 -0.611
</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="6507.417" A="-2.01785164E11" B="6.2279372E7" C="-4805.382" Error="0.00146"/>
<QuasiParabolic ID="2" StartDistance="6507.417" EndDistance="6534.833" A="0.0" B="-1015.67444" C="0.19609301" Error="0.0167"/>
<QuasiParabolic ID="3" StartDistance="6534.833" EndDistance="6562.0" A="7.7370417E10" B="-2.3763906E7" C="1824.7565" Error="0.0167"/>
<QuasiParabolic ID="4" StartDistance="6562.0" EndDistance="6564.0" A="2.0594882E13" B="-6.2771963E9" C="478313.03" Error="0.0357"/>
<QuasiParabolic ID="5" StartDistance="6564.0" EndDistance="6572.0" A="1.16607764E13" B="-3.55504358E9" C="270958.34" Error="0.0282"/>
<QuasiParabolic ID="6" StartDistance="6572.0" EndDistance="6584.0" A="4.334603E13" B="-1.31975424E10" C="1004562.94" Error="0.0404"/>
<QuasiParabolic ID="7" StartDistance="6584.0" EndDistance="6599.628" A="-4.2348424E13" B="1.2833579E10" C="-972284.06" Error="0.00493"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="82.25" Depth="0.154"/>
<TopsideChapman PeakHeight="229.628" PeakDensity="143424.31" PeakScaleHeight="12.428" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
