<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-18 -138 00:20:00.000"
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" >
2026.05.18 (138) 00:20:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.22" 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">
FF202613805180020001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.375" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.471" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.715" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.975" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.975" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.725" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="270.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="270.000" 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="0.075" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.150" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="291.191" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.975" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.975" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="275.203" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="250.794" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.815" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="34.899" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.130" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="18.910" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="31.480" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.170" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="17">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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" >
270.000 272.500 275.000 277.500 280.000 282.500 287.500 291.191 295.508 300.628 306.795 314.367 323.889 336.221 352.826 376.389 412.440
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 78 0 0 0 93 90 93 90 87 0 90 90 90 90 84 84
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="472">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 146.11766 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 182.23534 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 218.353 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 275.203 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0
</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 0.35362422 0.35321164 0.35257575 0.35171902 0.35071892 0.34950462 0.34815413 0.3465988 0.34477347 0.3428295 0.34070238 0.33833215 0.3357317 0.33298126 0.3299619 0.32675728 0.3232603 0.3195589 0.31561834 0.3114125 0.30697885 0.30219927 0.29715917 0.29179835 0.2861506 0.28013518 0.27375725 0.26695055 0.2596605 0.25199905 0.24379802 0.23502986 0.22562243 0.21563868 0.20485654 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 0.2 0.2 0.2 0.20326042 0.20752425 0.2117881 0.21605194 0.22031578 0.22457962 0.22884347 0.23310731 0.23737115 0.241635 0.24589883 0.25016266 0.2544265 0.25869036 0.2629542 0.26721802 0.27148187 0.27574572 0.28000957 0.28427342 0.28853723 0.29280108 0.29706493 0.30132878 0.3055926 0.30985644 0.3141203 0.31838414 0.322648 0.3269118 0.33117566 0.3354395 0.33970335 0.34396717 0.34823102 0.35249487 0.354 0.36917737 0.3957448 0.4262938 0.46073645 0.49864 0.53934777 0.5822107 0.626727 0.6725885 0.71964854 0.76788455 0.8173528 0.86817515 0.9204931 0.9744907 1.030368 1.0883344 1.1486274 1.2114922 1.277187 1.3459607 1.4180682 1.4937195 1.5730774 1.6562365 1.7431241 1.8335127 1.9269037 2.0225582 2.1194677 2.216426 2.3121724 2.4054713 2.4952848 2.5807784 2.6614535 2.7370043 2.8073401 2.8725114 2.932662 2.9879947 3.0387266 3.0851016 3.1273372 3.1656642 3.2002766 3.2313523 3.2590578 3.2835426 3.304922 3.32331 3.3388004 3.3514671 3.3613737 3.3685677 3.3730845 3.3749454 3.375 3.3744197 3.372083 3.3680136 3.3622746 3.3549283 3.3460379 3.3356664 3.3238764 3.3107302 3.2962892 3.2806149 3.263767 3.2458048 3.2267866 3.2067695 3.1858094 3.1639605 3.1412766 3.1178093 3.0936093 3.0687258 3.0432062 3.017097 2.9904425 2.9632864 2.9356704 2.9076343 2.8792174 2.8504567 2.8213885 2.7920468 2.762465 2.7326748 2.7027063 2.6725888 2.6423497 2.6120157 2.581612 2.5511627 2.5206907 2.4902172 2.4597635 2.4293487 2.3989913 2.3687093 2.3385186 2.3084354 2.278474 2.2486484 2.2189717 2.189456 2.1601126 2.1309524 2.1019852 2.0732207 2.044667 2.0163324 1.9882243 1.9603496 1.9327142 1.9053245 1.8781852 1.8513013 1.8246771 1.7983166 1.7722232 1.7464 1.7208496 1.6955746 1.6705769 1.6458583 1.6214199 1.5972632 1.5733889 1.5497975 1.5264896 1.503465 1.480724 1.4582659 1.4360905 1.414197 1.3925846 1.3712524 1.3501991 1.3294235 1.3089243 1.2886999 1.2687485 1.2490686 1.2296584 1.2105156 1.1916386 1.173025 1.1546729 1.1365799 1.1187438 1.1011622 1.0838327 1.066753 1.0499206 1.0333328 1.0169873 1.0008816 0.98501277 0.9693784 0.953976 0.93880266 0.9238559 0.9091331 0.8946314 0.8803483 0.8662811 0.8524271 0.8387837 0.8253481 0.81211776 0.79909 0.7862622 0.7736317 0.7611959 0.7489522 0.736898 0.7250307 0.71334785 0.70184684 0.6905251 0.67938024 0.6684097 0.6576111 0.6469819 0.6365198 0.6262223 0.6160871 0.60611176 0.59629405 0.58663166 0.57712233 0.56776375 0.5585537 0.54949 0.54057044 0.53179294 0.52315533 0.5146555 0.5062914 0.4980609 0.4899621 0.48199293 0.4741514 0.46643558 0.45884356 0.4513734 0.44402328 0.4367913 0.42967567 0.42267454 0.4157862 0.40900886 0.4023408 0.3957803 0.3893257 0.38297534 0.37672758 0.3705808 0.36453342 0.35858393 0.3527307 0.34697223 0.34130707 0.3357337 0.3302507 0.3248566 0.31955004 0.31432956 0.30919382 0.3041415 0.29917124 0.29428175 0.28947172 0.28473985 0.28008497 0.2755058 0.27100113 0.26656976 0.26221052 0.25792226 0.25370383 0.24955413 0.24547201 0.24145642 0.23750627 0.23362051 0.2297981 0.22603802 0.22233926 0.21870084 0.21512178 0.21160111 0.2081379 0.20473121 0.20138013 0.19808377 0.19484122 0.19165163 0.18851413 0.18542787 0.18239205 0.1794058 0.17646834 0.1735789 0.17073667 0.1679409 0.16519082 0.16248569 0.1598248 0.1572074 0.1546328 0.15210031 0.14960922 0.14715889 0.14474861 0.14237778 0.14004572 0.13775182 0.13549542 0.13327597 0.13109282 0.1289454 0.1268331 0.12475538 0.12271166 0.12070139 0.11872402 0.116779014 0.11486585 0.112984 0.11113295 0.10931221 0.10752127 0.10575966 0.104026884 0.10232248 0.10064598 0.09899694 0.09737489 0.09577941 0.09421006 0.0926664 0.09114803 0.08965451 0.08818546 0.08674047 0.08531914 0.0839211 0.08254594 0.08119332 0.07986285 0.078554176 0.07726693 0.07600078 0.07475536 0.07353035 0.07232541 0.0711402 0.06997441 0.06882771 0.067699805 0.066590376 0.06549913 0.06442575 0.06336996 0.062331464 0.061309986 0.060305245 0.059316963 0.058344875 0.057388715 0.05644822 0.055523135 0.054613207 0.05371819 0.052837837 0.05197191 0.05112017 0.050282385

</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="275.203" Num="5" zHalfNm="250.794" Error="2.716">
-60.607 6.867 -4.803 2.632 -0.939
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="10" 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="6516.118" A="-1.165592E11" B="3.597506E7" C="-2775.7283" Error="0.00174"/>
<QuasiParabolic ID="2" StartDistance="6516.118" EndDistance="6552.235" A="0.0" B="-704.629" C="0.14816862" Error="0.0157"/>
<QuasiParabolic ID="3" StartDistance="6552.235" EndDistance="6581.0" A="4.4953334E10" B="-1.3786654E7" C="1057.0679" Error="0.0157"/>
<QuasiParabolic ID="4" StartDistance="6581.0" EndDistance="6587.0" A="-5.5805809E10" B="1.683457E7" C="-1269.4193" Error="0.00461"/>
<QuasiParabolic ID="5" StartDistance="6587.0" EndDistance="6590.0" A="6.0552889E12" B="-1.83866714E9" C="139576.31" Error="0.0146"/>
<QuasiParabolic ID="6" StartDistance="6590.0" EndDistance="6599.0" A="5.5191179E12" B="-1.67594445E9" C="127230.13" Error="0.00136"/>
<QuasiParabolic ID="7" StartDistance="6599.0" EndDistance="6606.0" A="7.9773104E12" B="-2.4209641E9" C="183679.56" Error="0.00351"/>
<QuasiParabolic ID="8" StartDistance="6606.0" EndDistance="6621.0" A="2.12131979E13" B="-6.4281964E9" C="486982.03" Error="0.0158"/>
<QuasiParabolic ID="9" StartDistance="6621.0" EndDistance="6645.203" A="-1.84905242E13" B="5.5650744E9" C="-418717.3" Error="0.00507"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="108.353" Depth="0.154"/>
<TopsideChapman PeakHeight="275.203" PeakDensity="141322.89" PeakScaleHeight="18.91" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
