<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-15 -105 03:40:00.000"
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: 85% PACIFIC flags: Multiple candidates for F2x cusp, One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.15 (105) 03:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.19" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.98" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202610504150340001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="23" >
<URSI ID="00" Val="3.375" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.700" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="12.489" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.450" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.450" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.625" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="237.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="237.500" 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="88" Val="3.225" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="270.133" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.450" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.450" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="244.738" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="226.104" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.502" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="26.659" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.855" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="14.138" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="25.860" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.350" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="38">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.45 2.475 2.5 2.525 2.55 2.575 2.6 2.625 2.65 2.675 2.7 2.725 2.75 2.775 2.8 2.825 2.85 2.875 2.9 2.925 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
237.500 240.000 240.000 241.071 242.143 243.214 244.286 245.357 246.429 247.500 247.803 248.126 248.473 248.846 249.248 249.682 250.153 250.665 251.224 251.838 252.513 253.260 254.092 255.023 256.072 257.264 258.628 260.207 262.055 264.247 266.888 270.133 274.216 279.509 286.644 296.784 312.336 339.209
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 72 72 0 0 0 0 0 0 69 69 66 0 0 0 48 48 0 0 0 0 0 0 0 0 0 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" >
-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 -7.8125 -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="369">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 139.75 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 169.5 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 199.25 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 244.738 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0
</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 0.35347393 0.352762 0.35182965 0.3506064 0.3491724 0.34738788 0.34533682 0.34299496 0.34037665 0.33746356 0.3342082 0.33063674 0.3267138 0.32253745 0.31796023 0.31297803 0.30765462 0.30189866 0.29567927 0.28909197 0.28191414 0.2741947 0.26597098 0.25704813 0.24743798 0.23701459 0.22570056 0.21345264 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 0.20258823 0.2077647 0.21294117 0.21811765 0.22329412 0.2284706 0.23364706 0.23882353 0.244 0.24917647 0.25435293 0.2595294 0.2647059 0.26988235 0.27505884 0.2802353 0.28541178 0.29058823 0.2957647 0.30094117 0.30611765 0.3112941 0.3164706 0.32164705 0.32682353 0.332 0.33717647 0.34235293 0.3475294 0.3527059 0.354 0.3828681 0.4230799 0.46536377 0.50987786 0.55677664 0.60625124 0.6584589 0.71361995 0.77190465 0.8335105 0.8986222 0.9674126 1.040023 1.1165539 1.1970897 1.2815993 1.3700169 1.4621649 1.5577248 1.6563029 1.7573881 1.8603401 1.9644128 2.0688467 2.1728032 2.2754931 2.3761225 2.473974 2.5684266 2.65891 2.7449687 2.8262124 2.9023473 2.9731414 3.0384214 3.0980477 3.1519625 3.200085 3.242383 3.2788398 3.3094475 3.3342056 3.353119 3.3661842 3.3734105 3.375 3.3748872 3.372423 3.3668473 3.3583097 3.346961 3.3329515 3.3164313 3.2975485 3.2764497 3.2532785 3.2281759 3.2012784 3.17272 3.1426296 3.1111326 3.078349 3.0443957 3.009383 2.973418 2.9366024 2.8990333 2.860803 2.821999 2.782705 2.7429993 2.7029562 2.6626458 2.6221337 2.5814822 2.5407488 2.4999878 2.4592502 2.4185827 2.3780293 2.337631 2.297425 2.2574465 2.2177274 2.178297 2.1391826 2.1004086 2.0619972 2.0239694 1.986343 1.9491348 1.9123594 1.87603 1.840158 1.8047537 1.7698256 1.7353814 1.7014272 1.6679684 1.635009 1.6025522 1.5706002 1.5391546 1.508216 1.4777844 1.4478592 1.4184389 1.389522 1.3611058 1.3331877 1.3057643 1.2788321 1.252387 1.2264247 1.2009406 1.1759299 1.1513873 1.1273077 1.1036854 1.0805148 1.0577902 1.0355054 1.0136546 0.9922316 0.97123015 0.950644 0.9304669 0.9106924 0.89131415 0.87232584 0.85372096 0.8354932 0.81763625 0.80014366 0.7830091 0.76622635 0.7497892 0.7336914 0.71792674 0.7024892 0.68737274 0.6725714 0.65807927 0.64389044 0.62999916 0.61639977 0.6030866 0.59005415 0.57729685 0.56480944 0.55258644 0.5406228 0.52891314 0.51745254 0.50623596 0.49525848 0.48451525 0.47400153 0.46371263 0.45364398 0.44379106 0.43414938 0.42471468 0.4154826 0.406449 0.39760968 0.3889607 0.380498 0.3722177 0.364116 0.3561892 0.3484335 0.34084538 0.3334213 0.32615778 0.31905138 0.31209886 0.30529687 0.29864225 0.29213187 0.28576264 0.27953154 0.27343565 0.26747206 0.26163793 0.2559305 0.25034708 0.24488495 0.23954156 0.23431434 0.22920078 0.22419845 0.21930495 0.21451792 0.20983508 0.2052542 0.20077303 0.19638945 0.19210136 0.18790667 0.18380336 0.17978947 0.17586306 0.17202222 0.16826512 0.16458993 0.16099486 0.1574782 0.15403822 0.15067329 0.14738175 0.14416201 0.14101253 0.13793176 0.13491823 0.13197045 0.129087 0.1262665 0.12350755 0.12080883 0.11816903 0.115586855 0.11306106 0.11059041 0.10817371 0.105809785 0.10349748 0.10123568 0.09902327 0.09685918 0.09474236 0.09267177 0.09064641 0.08866529 0.08672745 0.084831946 0.082977846 0.08116425 0.07939028 0.07765507 0.07595776 0.07429755 0.072673604 0.07108515 0.069531396 0.06801159 0.066525005 0.0650709 0.06364857 0.062257316 0.06089647 0.059565365 0.058263347 0.056989785 0.055744052 0.054525547 0.053333674 0.052167844 0.0510275

</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="3.375" PeakHeight="244.738" Num="5" zHalfNm="226.104" Error="0.848">
-46.707 2.121 -1.483 0.668 -0.087
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="9" 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="6509.75" A="-1.71482022E11" B="5.2926548E7" C="-4083.7134" Error="0.00152"/>
<QuasiParabolic ID="2" StartDistance="6509.75" EndDistance="6539.5" A="0.0" B="-1254.6858" C="0.23276238" Error="0.0225"/>
<QuasiParabolic ID="3" StartDistance="6539.5" EndDistance="6566.0" A="6.9689106E10" B="-2.1388246E7" C="1641.0845" Error="0.0225"/>
<QuasiParabolic ID="4" StartDistance="6566.0" EndDistance="6568.0" A="-5.9670554E11" B="1.81595184E8" C="-13816.076" Error="7.26E-4"/>
<QuasiParabolic ID="5" StartDistance="6568.0" EndDistance="6570.0" A="1.08437795E13" B="-3.30210918E9" C="251386.75" Error="0.0302"/>
<QuasiParabolic ID="6" StartDistance="6570.0" EndDistance="6578.0" A="6.8851812E12" B="-2.09705638E9" C="159678.02" Error="0.0104"/>
<QuasiParabolic ID="7" StartDistance="6578.0" EndDistance="6600.0" A="1.94661843E13" B="-5.9222318E9" C="450433.22" Error="0.0333"/>
<QuasiParabolic ID="8" StartDistance="6600.0" EndDistance="6614.738" A="-3.46408847E13" B="1.04738488E10" C="-791694.1" Error="0.0122"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="89.25" Depth="0.154"/>
<TopsideChapman PeakHeight="244.738" PeakDensity="141322.89" PeakScaleHeight="14.138" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
