<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-03 -123 22:50:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 50% PACIFIC flags: F2o cusp not found, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.03 (123) 22:50:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.21" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.98" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="75.82641" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202612305032250001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.050" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.587" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="10.940" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.775" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.775" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="262.732" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="262.732" 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="2.825" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="270.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.775" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.775" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="258.731" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="239.758" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.549" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="27.169" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.719" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="14.340" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="27.450" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.050" 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" >
2.775 2.8 2.825 2.85 2.875 2.9 2.925 2.95 2.975 3.0 3.025 3.05
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
262.732 267.500 270.000 275.000 280.000 285.000 290.000 297.500 305.000 315.000 325.000 335.978
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 0 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -7.8125 -4.6875 -1.5625 -1.5625 -1.5625 -1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="382">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 143.473 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 176.946 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 210.419 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 258.731 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0
</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 0.35306174 0.352277 0.35134757 0.3502021 0.34877196 0.3471375 0.34530547 0.3432834 0.34100962 0.33842766 0.3356902 0.3326756 0.32940406 0.32583407 0.32205537 0.31797293 0.31356624 0.3088805 0.3038565 0.29850647 0.2928789 0.28675652 0.2802752 0.27333733 0.26599646 0.25810137 0.24967553 0.24060392 0.23088911 0.2204218 0.20921375 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 0.2 0.2 0.20024844 0.20484917 0.20944989 0.2140506 0.21865132 0.22325206 0.22785278 0.2324535 0.23705423 0.24165495 0.24625567 0.2508564 0.2554571 0.26005784 0.26465857 0.26925927 0.27386 0.27846074 0.28306144 0.28766218 0.2922629 0.29686362 0.30146435 0.30606505 0.3106658 0.31526652 0.31986722 0.32446796 0.3290687 0.3336694 0.33827013 0.34287086 0.34747157 0.3520723 0.354 0.37326273 0.40800545 0.44471103 0.48335645 0.5239498 0.5664933 0.61102974 0.6575773 0.7061843 0.7568974 0.8097497 0.8647852 0.92203635 0.98152167 1.0432737 1.1072699 1.173494 1.241913 1.3124448 1.3850108 1.459475 1.5356569 1.6133775 1.6923921 1.772416 1.8531617 1.9342645 2.0153537 2.0960274 2.1758842 2.2544847 2.331395 2.4061985 2.4784808 2.5478363 2.6138787 2.6762598 2.7346451 2.7887506 2.8383088 2.883066 2.9228277 2.957423 2.9866922 3.0105176 3.028801 3.0414708 3.048478 3.05 3.0498955 3.0477107 3.0427914 3.0352669 3.0252676 3.0129242 2.9983666 2.981723 2.963121 2.9426844 2.9205363 2.896795 2.8715773 2.8449955 2.8171582 2.788171 2.7581348 2.727147 2.695301 2.6626859 2.6293867 2.5954845 2.5610564 2.5261755 2.4909115 2.4553297 2.419492 2.3834565 2.3472784 2.3110092 2.2746966 2.2383862 2.20212 2.1659372 2.1298742 2.0939648 2.0582407 2.0227304 1.9874606 1.9524561 1.9177389 1.8833299 1.8492473 1.8155084 1.782128 1.7491201 1.7164968 1.6842691 1.6524464 1.621037 1.5900483 1.5594863 1.5293562 1.4996623 1.4704078 1.4415954 1.4132268 1.3853033 1.3578252 1.3307923 1.304204 1.2780591 1.2523562 1.2270927 1.2022665 1.1778746 1.1539137 1.1303805 1.1072713 1.0845819 1.0623081 1.0404454 1.0189896 0.9979354 0.9772782 0.95701283 0.93713427 0.9176372 0.89851636 0.8797664 0.8613818 0.8433572 0.82568705 0.8083658 0.79138803 0.7747481 0.7584405 0.7424598 0.7268004 0.71145684 0.69642365 0.6816955 0.66726696 0.6531327 0.63928735 0.62572575 0.61244273 0.59943306 0.58669174 0.5742137 0.561994 0.5500278 0.5383101 0.5268363 0.5156016 0.50460136 0.49383104 0.48328614 0.47296223 0.46285492 0.45295992 0.44327304 0.4337901 0.42450696 0.4154197 0.40652427 0.39781687 0.3892936 0.3809508 0.37278473 0.3647918 0.35696846 0.3493112 0.34181663 0.3344814 0.32730216 0.32027575 0.31339896 0.30666867 0.30008188 0.29363555 0.28732678 0.28115267 0.2751104 0.26919723 0.26341045 0.25774735 0.2522054 0.24678203 0.24147472 0.23628102 0.23119855 0.22622494 0.22135791 0.21659519 0.21193457 0.20737387 0.20291099 0.19854386 0.19427043 0.1900887 0.18599674 0.18199262 0.1780745 0.1742405 0.17048886 0.16681781 0.16322565 0.15971068 0.15627125 0.15290575 0.14961259 0.14639024 0.14323717 0.14015192 0.13713302 0.13417904 0.13128862 0.12846036 0.12569296 0.12298511 0.12033552 0.11774295 0.11520618 0.112724006 0.11029526 0.10791879 0.10559348 0.10331823 0.101091966 0.09891363 0.09678221 0.09469667 0.092656046 0.09065937 0.08870569 0.086794086 0.084923655 0.08309351 0.08130278 0.079550624 0.07783621 0.076158725 0.07451738 0.07291139 0.071339995 0.069802456 0.06829805 0.066826046 0.06538576 0.063976504 0.06259761 0.061248433 0.059928324 0.058636658 0.057372827 0.05613623 0.054926276 0.053742398 0.05258403 0.051450625 0.050341643

</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="3.05" PeakHeight="258.731" Num="5" zHalfNm="239.758" Error="1.09">
-47.911 -0.444 -0.183 0.295 -0.069
</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="6513.473" A="-1.35602135E11" B="4.1852512E7" C="-3229.235" Error="0.00165"/>
<QuasiParabolic ID="2" StartDistance="6513.473" EndDistance="6546.946" A="0.0" B="186.23352" C="0.0114374105" Error="0.00292"/>
<QuasiParabolic ID="3" StartDistance="6546.946" EndDistance="6549.0" A="-6.2366699E11" B="1.90390272E8" C="-14530.327" Error="0.0183"/>
<QuasiParabolic ID="4" StartDistance="6549.0" EndDistance="6577.0" A="5.5057011E10" B="-1.6885336E7" C="1294.6548" Error="0.0198"/>
<QuasiParabolic ID="5" StartDistance="6577.0" EndDistance="6579.0" A="-6.7213433E11" B="2.04246288E8" C="-15516.325" Error="0.00128"/>
<QuasiParabolic ID="6" StartDistance="6579.0" EndDistance="6582.0" A="8.5880797E12" B="-2.61083622E9" C="198428.23" Error="0.0172"/>
<QuasiParabolic ID="7" StartDistance="6582.0" EndDistance="6584.0" A="3.75886211E12" B="-1.14343501E9" C="86957.46" Error="1.42E-4"/>
<QuasiParabolic ID="8" StartDistance="6584.0" EndDistance="6592.0" A="6.343512E12" B="-1.9285655E9" C="146581.6" Error="0.0103"/>
<QuasiParabolic ID="9" StartDistance="6592.0" EndDistance="6608.0" A="1.39384859E13" B="-4.23286579E9" C="321361.66" Error="0.0147"/>
<QuasiParabolic ID="10" StartDistance="6608.0" EndDistance="6618.0" A="2.21334864E12" B="-6.8409555E8" C="52840.9" Error="0.0124"/>
<QuasiParabolic ID="11" StartDistance="6618.0" EndDistance="6628.731" A="-3.10857423E13" B="9.3790925E9" C="-707448.4" Error="0.00479"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="100.419" Depth="0.154"/>
<TopsideChapman PeakHeight="258.731" PeakDensity="115415.63" PeakScaleHeight="14.34" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
