<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-04 -124 03:10:00.000"
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: Multiple candidates for F2x cusp, F2 cusps do not match</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.04 (124) 03:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.21" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.99" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="75.82641" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202612405040310001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.625" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.629" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="13.155" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.125" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="245.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="245.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.450" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="277.631" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="252.336" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="233.026" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.780" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="27.665" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.023" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="14.711" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="26.650" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.400" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="28">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.95 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 3.425 3.45 3.475 3.5 3.525 3.55 3.575 3.6 3.625
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
245.000 245.000 247.500 248.333 249.167 250.000 252.500 252.500 255.000 257.500 257.500 260.000 262.500 262.500 265.000 267.500 267.500 270.000 272.128 274.635 277.631 281.275 285.803 291.581 299.209 309.746 325.245 350.296
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 66 66 0 0 90 90 96 102 99 105 102 102 102 102 90 87 102 99 93 99 84 84 87 78 72 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="388">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 141.5 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 204.5 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 252.336 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0
</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 0.35354906 0.3529118 0.35205317 0.35097662 0.34968653 0.34811512 0.3462709 0.3442354 0.34187606 0.33927825 0.33638793 0.33322465 0.32980946 0.32603815 0.32200715 0.31768805 0.31300464 0.30795586 0.3025528 0.29676917 0.29057935 0.28398937 0.27689454 0.26927269 0.26112098 0.25231692 0.24289067 0.23271252 0.2217551 0.20985778 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 0.2 0.2 0.2048889 0.20977777 0.21466666 0.21955556 0.22444445 0.22933333 0.23422222 0.23911111 0.244 0.2488889 0.25377777 0.25866666 0.26355556 0.26844445 0.27333334 0.27822223 0.28311113 0.288 0.29288888 0.29777777 0.30266666 0.30755556 0.31244445 0.31733334 0.32222223 0.32711112 0.332 0.33688888 0.34177777 0.34666666 0.35155556 0.354 0.37160003 0.40938452 0.45038563 0.4943396 0.5410468 0.5903747 0.64228225 0.69679505 0.75396425 0.8139162 0.87678766 0.94274 1.0119288 1.0845463 1.1607568 1.2407161 1.3245386 1.4122943 1.5040289 1.5996305 1.6989273 1.8015996 1.9072152 2.0151272 2.1246367 2.23487 2.344874 2.4537518 2.560518 2.6643252 2.764415 2.8601437 2.9509656 3.0365157 3.1165056 3.190744 3.2590868 3.3215091 3.3779876 3.4285314 3.4731758 3.5119796 3.5449877 3.5722477 3.5938137 3.6097229 3.6200058 3.624684 3.625 3.6242857 3.6205783 3.6138341 3.6041963 3.5918083 3.5768137 3.5593553 3.539574 3.5176091 3.4935977 3.4676733 3.4399672 3.4106061 3.379714 3.3474104 3.313811 3.279027 3.2431657 3.2063298 3.168618 3.130124 3.0909379 3.0511448 3.0108266 2.9700599 2.928918 2.8874695 2.8457804 2.8039114 2.7619212 2.7198632 2.6777887 2.6357453 2.5937774 2.5519266 2.5102315 2.468728 2.427449 2.3864255 2.3456855 2.3052552 2.2651584 2.2254167 2.1860504 2.147077 2.1085134 2.0703735 2.032671 1.9954174 1.9586228 1.9222963 1.8864458 1.8510777 1.8161978 1.7818104 1.7479197 1.714528 1.6816375 1.6492496 1.6173646 1.5859827 1.555103 1.5247242 1.4948448 1.4654623 1.4365745 1.4081779 1.3802692 1.3528447 1.3259004 1.2994319 1.2734348 1.2479042 1.222835 1.198222 1.1740601 1.1503438 1.1270673 1.104225 1.0818112 1.0598198 1.0382451 1.017081 0.9963215 0.9759605 0.9559919 0.9364098 0.91720784 0.89838016 0.87992054 0.861823 0.84408146 0.82669 0.8096426 0.7929334 0.77655643 0.7605059 0.74477607 0.72936124 0.71425563 0.6994538 0.68495005 0.67073905 0.6568153 0.6431735 0.62980837 0.6167147 0.60388744 0.5913214 0.57901174 0.5669534 0.55514175 0.5435718 0.532239 0.5211388 0.5102665 0.4996177 0.48918805 0.4789732 0.46896893 0.45917103 0.44957542 0.44017807 0.43097505 0.42196244 0.41313642 0.40449327 0.3960293 0.3877409 0.37962452 0.37167665 0.36389393 0.35627297 0.3488105 0.34150326 0.3343481 0.32734197 0.32048178 0.3137645 0.3071873 0.30074722 0.2944415 0.28826734 0.28222206 0.276303 0.27050754 0.26483318 0.25927737 0.25383767 0.24851172 0.24329711 0.23819157 0.23319285 0.22829871 0.22350699 0.21881557 0.21422236 0.2097253 0.20532244 0.2010118 0.19679146 0.19265953 0.18861419 0.18465361 0.18077604 0.17697977 0.17326307 0.16962428 0.16606182 0.16257404 0.15915942 0.15581642 0.15254353 0.14933932 0.14620231 0.14313114 0.1401244 0.13718075 0.13429888 0.13147749 0.1287153 0.12601112 0.12336368 0.120771825 0.11823438 0.1157502 0.11331818 0.11093723 0.108606264 0.10632425 0.10409015 0.10190296 0.09976171 0.09766543 0.095613174 0.09360402 0.09163707 0.08971142 0.08782623 0.08598063 0.084173806 0.082404934 0.08067322 0.07897788 0.07731816 0.0756933 0.07410259 0.07254529 0.07102071 0.069528155 0.06806697 0.06663647 0.06523604 0.06386503 0.06252283 0.061208826 0.059922434 0.058663074 0.057430174 0.056223184 0.05504155 0.053884752 0.05275226 0.05164357 0.050558172

</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="3.625" PeakHeight="252.336" Num="5" zHalfNm="233.026" Error="1.236">
-49.255 2.537 -1.859 1.0 -0.259
</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="6511.5" A="-1.53036653E11" B="4.7233536E7" C="-3644.4375" Error="0.00157"/>
<QuasiParabolic ID="2" StartDistance="6511.5" EndDistance="6543.0" A="0.0" B="518.0367" C="-0.039532434" Error="0.00896"/>
<QuasiParabolic ID="3" StartDistance="6543.0" EndDistance="6545.0" A="-1.68761242E12" B="5.15645664E8" C="-39388.51" Error="0.0376"/>
<QuasiParabolic ID="4" StartDistance="6545.0" EndDistance="6559.0" A="1.37610428E11" B="-4.2100028E7" C="3220.0232" Error="0.0371"/>
<QuasiParabolic ID="5" StartDistance="6559.0" EndDistance="6574.0" A="-1.03260897E10" B="3009444.5" C="-218.72304" Error="0.013"/>
<QuasiParabolic ID="6" StartDistance="6574.0" EndDistance="6575.0" A="2.15273408E13" B="-6.5493683E9" C="498136.75" Error="0.0"/>
<QuasiParabolic ID="7" StartDistance="6575.0" EndDistance="6578.0" A="5.7750664E12" B="-1.75780224E9" C="133759.11" Error="0.00147"/>
<QuasiParabolic ID="8" StartDistance="6578.0" EndDistance="6583.0" A="7.4036386E12" B="-2.25295949E9" C="171396.48" Error="0.00227"/>
<QuasiParabolic ID="9" StartDistance="6583.0" EndDistance="6592.0" A="1.6416034E13" B="-4.991041E9" C="379362.56" Error="0.0266"/>
<QuasiParabolic ID="10" StartDistance="6592.0" EndDistance="6606.0" A="2.59803956E13" B="-7.8928497E9" C="599463.3" Error="0.0369"/>
<QuasiParabolic ID="11" StartDistance="6606.0" EndDistance="6622.336" A="-3.6357771E13" B="1.09803459E10" C="-829025.56" Error="0.0134"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="94.5" Depth="0.154"/>
<TopsideChapman PeakHeight="252.336" PeakDensity="163035.05" PeakScaleHeight="14.711" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
