<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-03 -123 06:45:00.000"
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: 95% PACIFIC flags: Multiple candidates for F2x cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.03 (123) 06:45:00</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">
FF202612305030645001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.675" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.517" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="12.924" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.175" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.175" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.100" 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="86" Val="0.125" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.475" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="290.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.175" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.175" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="257.996" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="232.761" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.480" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="36.008" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.357" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="19.235" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="33.130" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.820" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="61">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.175 2.2 2.225 2.25 2.275 2.3 2.325 2.35 2.375 2.4 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
237.500 238.333 239.167 240.000 240.417 240.833 241.250 241.667 242.083 242.500 242.500 242.500 242.500 245.000 245.000 245.000 245.000 247.500 247.500 247.500 247.500 250.000 250.000 252.500 252.500 252.500 252.500 255.000 255.000 255.625 256.250 256.875 257.500 260.000 260.000 262.500 262.500 265.000 265.000 267.500 267.500 270.000 270.000 272.500 272.500 275.000 275.000 280.000 282.500 285.000 285.000 287.500 290.000 295.000 297.500 302.500 307.500 312.500 320.000 328.771 339.717
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
81 0 0 69 0 0 0 0 0 78 72 69 69 72 72 72 72 72 72 72 72 72 72 69 60 63 48 48 69 0 0 0 69 69 81 81 93 93 99 96 99 96 99 99 96 96 96 93 93 93 90 93 81 81 69 69 87 84 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 1.5625 10.9375 -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 1.5625 1.5625 1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="465">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 139.75 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 169.5 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 199.25 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 257.996 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0
</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 0.37963492 0.41374585 0.44821903 0.48339254 0.51953405 0.5568673 0.59559655 0.635924 0.6780303 0.72211415 0.7683656 0.8169973 0.8682168 0.9222338 0.97926456 1.0395356 1.1032648 1.170623 1.2418056 1.3169148 1.3960202 1.4790616 1.5659461 1.6563765 1.7499368 1.8461077 1.9441997 2.0434747 2.1430924 2.2422493 2.3401475 2.4361124 2.5295355 2.6199515 2.7069492 2.7902887 2.8697746 2.9452767 3.0167613 3.0842164 3.1476433 3.2071095 3.2626686 3.3143861 3.3623352 3.4065995 3.447251 3.484366 3.5180154 3.5482597 3.5751565 3.5987585 3.6191218 3.6362767 3.6502662 3.6611128 3.6688414 3.6734672 3.675 3.675 3.674033 3.6711895 3.6665344 3.6601322 3.6520476 3.6423464 3.6310933 3.6183531 3.6041903 3.5886688 3.5718515 3.5538003 3.534577 3.5142415 3.4928527 3.4704688 3.4471462 3.4229403 3.3979046 3.372092 3.3455534 3.318338 3.290494 3.262068 3.2331052 3.2036488 3.1737409 3.143422 3.112731 3.0817058 3.0503821 3.018795 2.9869773 2.954961 2.922777 2.890454 2.85802 2.825502 2.7929246 2.7603128 2.727689 2.6950755 2.6624928 2.6299605 2.5974977 2.565122 2.5328496 2.5006964 2.4686778 2.4368072 2.405098 2.3735623 2.3422122 2.3110578 2.28011 2.2493775 2.2188694 2.1885939 2.1585584 2.1287699 2.0992346 2.0699587 2.0409474 2.0122054 1.9837373 1.9555471 1.9276383 1.9000142 1.8726773 1.8456303 1.8188752 1.7924137 1.7662473 1.7403772 1.7148043 1.6895292 1.6645522 1.6398735 1.6154932 1.5914108 1.5676259 1.5441377 1.5209457 1.4980487 1.4754455 1.453135 1.4311156 1.4093858 1.387944 1.3667883 1.345917 1.325328 1.3050193 1.2849888 1.2652342 1.2457533 1.2265438 1.2076031 1.188929 1.1705189 1.1523702 1.1344805 1.116847 1.0994672 1.0823383 1.0654578 1.0488229 1.0324309 1.016279 1.0003644 0.9846846 0.9692366 0.95401776 0.9390252 0.9242563 0.90970826 0.89537823 0.8812636 0.86736155 0.8536694 0.8401844 0.8269038 0.8138251 0.80094534 0.7882621 0.77577263 0.76347435 0.7513646 0.73944086 0.7277005 0.71614105 0.7047599 0.69355464 0.6825227 0.67166173 0.66096926 0.65044284 0.64008015 0.62987876 0.61983645 0.6099508 0.60021955 0.5906405 0.5812113 0.57192993 0.562794 0.5538016 0.54495037 0.5362383 0.5276633 0.51922333 0.5109164 0.50274044 0.49469352 0.48677367 0.47897896 0.47130752 0.46375746 0.4563269 0.44901407 0.44181713 0.4347343 0.42776388 0.4209041 0.41415328 0.4075097 0.40097174 0.39453775 0.38820612 0.3819753 0.37584367 0.36980972 0.36387193 0.3580288 0.35227883 0.3466206 0.34105265 0.33557358 0.330182 0.32487652 0.3196558 0.31451854 0.30946338 0.30448908 0.29959428 0.29477784 0.29003844 0.2853749 0.280786 0.2762706 0.27182752 0.26745558 0.2631537 0.25892076 0.25475568 0.25065732 0.24662471 0.24265675 0.23875242 0.23491073 0.23113067 0.22741126 0.22375153 0.22015055 0.21660736 0.21312106 0.20969072 0.20631549 0.20299444 0.19972675 0.19651152 0.19334796 0.19023523 0.18717252 0.18415901 0.18119393 0.17827651 0.175406 0.17258161 0.16980264 0.16706833 0.164378 0.16173092 0.15912642 0.15656379 0.1540424 0.15156154 0.14912058 0.1467189 0.14435586 0.14203084 0.13974321 0.1374924 0.1352778 0.13309884 0.13095494 0.12884554 0.1267701 0.12472804 0.12271886 0.120742016 0.118797 0.11688328 0.11500037 0.11314777 0.111324996 0.10953157 0.107767016 0.10603087 0.10432267 0.102641985 0.10098835 0.09936135 0.09776054 0.09618552 0.09463585 0.09311114 0.09161099 0.09013499 0.08868276 0.08725393 0.0858481 0.084464915 0.08310401 0.08176502 0.0804476 0.07915139 0.07787607 0.07662129 0.07538671 0.07417203 0.07297691 0.07180104 0.07064411 0.069505826 0.06838587 0.06728396 0.066199794 0.0651331 0.06408358 0.06305098 0.062035013 0.06103541 0.06005191 0.05908426 0.058132194 0.05719547 0.056273833 0.05536705 0.05447487 0.05359707 0.05273341 0.051883664 0.051047612 0.050225027

</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="3.675" PeakHeight="257.996" Num="5" zHalfNm="232.761" Error="1.007">
-62.497 6.293 -4.04 1.639 -0.141
</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="-1894.5669" C="0.33105817" Error="0.0337"/>
<QuasiParabolic ID="3" StartDistance="6539.5" EndDistance="6568.0" A="7.5509277E10" B="-2.316282E7" C="1776.3508" Error="0.0337"/>
<QuasiParabolic ID="4" StartDistance="6568.0" EndDistance="6574.0" A="6.1950216E12" B="-1.8865952E9" C="143633.27" Error="0.056"/>
<QuasiParabolic ID="5" StartDistance="6574.0" EndDistance="6582.0" A="4.22798846E12" B="-1.28816717E9" C="98118.51" Error="0.0339"/>
<QuasiParabolic ID="6" StartDistance="6582.0" EndDistance="6589.0" A="1.65938316E13" B="-5.0456402E9" C="383554.0" Error="0.00767"/>
<QuasiParabolic ID="7" StartDistance="6589.0" EndDistance="6604.0" A="2.04824893E13" B="-6.2259886E9" C="473123.62" Error="0.0345"/>
<QuasiParabolic ID="8" StartDistance="6604.0" EndDistance="6627.996" A="-2.0916065E13" B="6.3114296E9" C="-476105.5" Error="0.0147"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="89.25" Depth="0.154"/>
<TopsideChapman PeakHeight="257.996" PeakDensity="167563.58" PeakScaleHeight="19.235" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
