<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-15 -105 22:35:00.000"
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="20.0">
<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" >
2026.04.15 (105) 22:35:00</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">
FF202610504152235001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.725" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.817" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="14.218" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.425" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.425" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.350" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="207.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="207.500" 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="0.175" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.575" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="257.693" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.425" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.425" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="227.537" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="205.144" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.018" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="31.915" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.240" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="17.265" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="28.380" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.280" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="53">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.425 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 3.4 3.425 3.45 3.475 3.5 3.525 3.55 3.575 3.6 3.625 3.65 3.675 3.7 3.725
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
207.500 210.000 210.000 210.000 210.000 210.000 215.000 212.500 212.500 217.500 220.000 215.000 217.500 218.750 220.000 220.000 220.000 220.938 221.875 222.813 223.750 224.688 225.625 226.563 227.500 228.750 230.000 230.833 231.667 232.500 232.500 232.500 234.167 235.833 237.500 237.500 239.167 240.833 241.838 242.966 244.242 245.697 247.371 249.320 251.614 254.357 257.693 261.838 267.127 274.109 283.753 297.940 320.868
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 69 57 54 57 54 54 57 57 54 51 51 54 0 42 42 33 0 0 0 0 0 0 0 69 0 81 0 0 81 84 81 0 0 90 87 0 0 90 93 69 72 72 72 75 75 72 72 66 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-3.125 -3.125 -3.125 3.125 3.125 3.125 3.125 3.125 -3.125 3.125 -3.125 3.125 -3.125 3.125 -3.125 3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 9.375 -3.125 3.125 -3.125 -3.125 3.125 3.125 -3.125 3.125 -3.125 -3.125 3.125 3.125 3.125 -3.125 -3.125 -3.125 -3.125 3.125 3.125 -3.125 3.125 -3.125 -3.125 -3.125 -3.125 -3.125 3.125 3.125 -9.375 -3.125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="405">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 132.75 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 155.5 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 178.25 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 227.537 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0
</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 0.35375562 0.35316312 0.35201776 0.35053736 0.34852743 0.34607637 0.3432073 0.3398182 0.3359499 0.3315876 0.3266711 0.32122076 0.31516615 0.30852863 0.30124253 0.2931789 0.2843912 0.27475142 0.26413658 0.252487 0.23960334 0.22532961 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.21414286 0.22042857 0.22671428 0.233 0.23928571 0.24557143 0.25185713 0.25814286 0.2644286 0.27071428 0.277 0.2832857 0.28957143 0.29585713 0.30214286 0.3084286 0.31471428 0.321 0.3272857 0.33357143 0.33985713 0.34614286 0.3524286 0.354 0.37748116 0.4135877 0.45519128 0.50179166 0.55257237 0.60678864 0.6639086 0.72368383 0.78609294 0.85126275 0.91946006 0.99101555 1.0663153 1.1458495 1.2300587 1.3194846 1.4145879 1.5158377 1.6234709 1.7375004 1.857534 1.9826283 2.1112537 2.2413168 2.370428 2.4963443 2.6170802 2.73126 2.8380854 2.9372027 3.0286572 3.11264 3.1895401 3.2597244 3.3236344 3.3816688 3.4341826 3.4815311 3.5240088 3.5618787 3.595381 3.6247084 3.6500354 3.671508 3.6892462 3.703348 3.713891 3.7209299 3.7245038 3.725 3.7247398 3.7224343 3.717819 3.7109842 3.7020211 3.6910214 3.678076 3.6632757 3.6467106 3.6284695 3.6086407 3.58731 3.5645626 3.5404816 3.515148 3.488641 3.461038 3.4324138 3.4028409 3.37239 3.341129 3.309124 3.276438 3.2431326 3.209266 3.1748946 3.1400728 3.1048522 3.0692823 3.0334103 2.9972816 2.960939 2.9244232 2.8877738 2.851027 2.8142183 2.7773805 2.7405453 2.7037418 2.6669984 2.6303413 2.593795 2.557383 2.5211267 2.485047 2.4491627 2.4134915 2.3780499 2.3428533 2.307916 2.273251 2.2388706 2.2047858 2.1710072 2.1375437 2.104404 2.0715957 2.039126 2.007001 1.9752259 1.9438059 1.9127454 1.8820479 1.8517165 1.821754 1.7921624 1.7629435 1.7340986 1.7056283 1.6775331 1.6498134 1.6224688 1.5954987 1.5689024 1.5426785 1.5168259 1.491343 1.4662279 1.4414784 1.4170926 1.3930678 1.3694016 1.3460912 1.3231338 1.3005264 1.278266 1.2563492 1.2347728 1.2135334 1.1926277 1.1720519 1.1518025 1.131876 1.1122686 1.0929765 1.0739958 1.0553231 1.0369544 1.0188857 1.0011133 0.9836334 0.9664419 0.94953513 0.93290913 0.91656005 0.900484 0.88467723 0.86913586 0.8538561 0.83883405 0.82406604 0.8095483 0.7952771 0.7812488 0.76745963 0.753906 0.7405843 0.727491 0.7146225 0.70197535 0.689546 0.67733103 0.66532713 0.6535309 0.6419389 0.63054806 0.61935496 0.6083565 0.5975494 0.58693063 0.5764971 0.56624573 0.55617356 0.5462775 0.5365548 0.52700245 0.5176177 0.50839764 0.49933958 0.49044073 0.48169848 0.4731101 0.46467307 0.45638478 0.44824266 0.4402443 0.43238714 0.42466888 0.41708705 0.40963933 0.40232342 0.39513707 0.38807803 0.3811441 0.37433308 0.3676429 0.36107144 0.35461664 0.34827647 0.3420489 0.33593202 0.32992387 0.3240226 0.31822625 0.31253308 0.3069412 0.3014489 0.29605442 0.29075602 0.28555202 0.28044078 0.27542064 0.27049 0.2656473 0.26089096 0.2562195 0.25163138 0.24712516 0.24269938 0.23835263 0.23408347 0.22989058 0.22577257 0.22172815 0.21775597 0.21385479 0.21002333 0.20626035 0.20256466 0.19893502 0.1953703 0.19186932 0.18843096 0.18505411 0.18173766 0.17848054 0.1752817 0.1721401 0.16905472 0.16602457 0.16304864 0.16012597 0.15725563 0.1544367 0.1516682 0.1489493 0.14627905 0.14365664 0.1410812 0.13855188 0.13606784 0.13362831 0.13123247 0.12887955 0.12656878 0.12429941 0.12207069 0.119881906 0.11773234 0.11562128 0.113548055 0.11151198 0.10951239 0.10754863 0.10562007 0.10372607 0.10186601 0.10003929 0.098245315 0.096483484 0.09475324 0.09305401 0.09138524 0.08974638 0.088136904 0.08655627 0.08500398 0.083479516 0.08198238 0.08051209 0.079068154 0.07765011 0.07625748 0.07488983 0.0735467 0.07222765 0.07093225 0.069660075 0.06841071 0.06718375 0.06597879 0.064795434 0.0636333 0.06249201 0.061371177 0.060270447 0.059189454 0.058127847 0.057085276 0.056061402 0.05505589 0.05406841 0.053098638 0.052146256 0.051210955 0.050292425

</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="3.725" PeakHeight="227.537" Num="5" zHalfNm="205.144" Error="0.996">
-54.57 8.726 -5.057 2.315 -0.701
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="16" 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="6502.75" A="-2.76986757E11" B="8.5489736E7" C="-6596.305" Error="0.00133"/>
<QuasiParabolic ID="2" StartDistance="6502.75" EndDistance="6525.5" A="0.0" B="106.44824" C="0.02820834" Error="0.00128"/>
<QuasiParabolic ID="3" StartDistance="6525.5" EndDistance="6526.0" A="-9.023979E12" B="2.76553882E9" C="-211885.56" Error="1.31E-9"/>
<QuasiParabolic ID="4" StartDistance="6526.0" EndDistance="6527.0" A="4.6216496E12" B="-1.41638822E9" C="108519.516" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6527.0" EndDistance="6528.0" A="-4.4780938E12" B="1.37195034E9" C="-105080.805" Error="0.0"/>
<QuasiParabolic ID="6" StartDistance="6528.0" EndDistance="6529.0" A="4.17422744E12" B="-1.27888333E9" C="97954.86" Error="5.66E-10"/>
<QuasiParabolic ID="7" StartDistance="6529.0" EndDistance="6531.0" A="-1.12347513E12" B="3.43938656E8" C="-26323.13" Error="0.0193"/>
<QuasiParabolic ID="8" StartDistance="6531.0" EndDistance="6546.0" A="1.39464671E11" B="-4.281366E7" C="3285.8372" Error="0.0189"/>
<QuasiParabolic ID="9" StartDistance="6546.0" EndDistance="6547.0" A="-1.78382373E12" B="5.4480883E8" C="-41598.25" Error="6.3E-11"/>
<QuasiParabolic ID="10" StartDistance="6547.0" EndDistance="6549.0" A="8.2570096E12" B="-2.52249933E9" C="192654.7" Error="0.0189"/>
<QuasiParabolic ID="11" StartDistance="6549.0" EndDistance="6551.0" A="1.02836931E13" B="-3.14142848E9" C="239908.42" Error="0.0111"/>
<QuasiParabolic ID="12" StartDistance="6551.0" EndDistance="6554.0" A="6.5535969E12" B="-2.00264179E9" C="152991.4" Error="0.00595"/>
<QuasiParabolic ID="13" StartDistance="6554.0" EndDistance="6562.0" A="1.24074789E13" B="-3.78899584E9" C="289271.1" Error="0.014"/>
<QuasiParabolic ID="14" StartDistance="6562.0" EndDistance="6574.0" A="3.7262516E13" B="-1.13644411E10" C="866491.9" Error="0.014"/>
<QuasiParabolic ID="15" StartDistance="6574.0" EndDistance="6597.537" A="-2.59008926E13" B="7.8516854E9" C="-595032.9" Error="0.0066"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="68.25" Depth="0.143"/>
<TopsideChapman PeakHeight="227.537" PeakDensity="172154.16" PeakScaleHeight="17.265" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
