<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-04 -124 00:40:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 95% PACIFIC flags: Multiple candidates for F2o cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.04 (124) 00:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.21" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.99" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="75.82641" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202612405040040001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.262" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="13.702" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.550" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="272.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="272.500" 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="0.075" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.950" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="327.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="296.012" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="262.986" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.709" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="47.165" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="2.330" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="25.520" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="42.270" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.220" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="51">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 3.75 3.775 3.8 3.825 3.85 3.875 3.9 3.925 3.95 3.975 4.0 4.025 4.05 4.075 4.1 4.125 4.15 4.175 4.2
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
272.500 273.750 275.000 275.000 275.000 277.500 277.500 277.500 280.000 280.000 280.000 282.500 282.500 285.000 285.000 285.000 287.500 287.500 290.000 290.000 292.500 292.500 295.000 295.000 297.500 297.500 300.000 302.500 302.500 302.500 305.000 307.500 310.000 312.500 315.000 317.500 320.000 322.500 325.000 327.500 327.500 332.500 337.500 342.500 347.500 352.500 360.650 371.051 384.781 403.747 431.647
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 0 72 84 84 93 96 96 96 99 99 96 99 93 96 96 96 99 96 99 93 84 84 87 84 84 84 78 84 81 84 72 69 66 60 87 87 90 93 69 66 90 90 90 87 99 99 99 93 96 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
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 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="610">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 146.332 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 182.664 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 218.996 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 296.012 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0 608.0 609.0 610.0 611.0 612.0 613.0 614.0 615.0 616.0 617.0 618.0 619.0 620.0 621.0 622.0 623.0 624.0 625.0 626.0 627.0 628.0 629.0 630.0 631.0 632.0 633.0 634.0 635.0 636.0 637.0 638.0 639.0 640.0 641.0 642.0 643.0 644.0 645.0 646.0 647.0 648.0 649.0 650.0 651.0 652.0 653.0 654.0 655.0 656.0 657.0 658.0 659.0 660.0 661.0 662.0 663.0 664.0 665.0 666.0 667.0 668.0 669.0 670.0 671.0 672.0 673.0 674.0 675.0 676.0 677.0 678.0 679.0 680.0 681.0 682.0 683.0 684.0 685.0 686.0 687.0 688.0 689.0 690.0 691.0 692.0 693.0 694.0 695.0 696.0 697.0 698.0
</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 0.34957823 0.34822705 0.34667096 0.34491634 0.34297046 0.34084123 0.33853745 0.3359669 0.33321175 0.3302522 0.3270404 0.3236597 0.32000667 0.31610996 0.31199962 0.30754262 0.3028954 0.29789633 0.29268602 0.2870289 0.28112218 0.2748241 0.26813817 0.260985 0.2534512 0.24538654 0.2367436 0.22759357 0.21775797 0.20721418 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 0.2014242 0.20566289 0.20990157 0.21414027 0.21837895 0.22261764 0.22685632 0.23109502 0.2353337 0.23957239 0.24381107 0.24804977 0.25228846 0.25652713 0.26076582 0.26500452 0.2692432 0.27348188 0.27772057 0.28195927 0.28619796 0.29043663 0.29467532 0.29891402 0.3031527 0.3073914 0.31163007 0.31586877 0.32010746 0.32434615 0.32858482 0.33282351 0.3370622 0.3413009 0.34553957 0.34977826 0.354 0.35406968 0.3727386 0.39393392 0.41790116 0.4447869 0.47457576 0.50707006 0.5419364 0.578783 0.6172338 0.6569916 0.697849 0.739678 0.78242654 0.8260875 0.8706964 0.91630316 0.96300125 1.0108627 1.0600239 1.1105714 1.1626444 1.216383 1.2719138 1.3294046 1.388997 1.4508586 1.5151553 1.582045 1.6516923 1.7242208 1.7997566 1.8783902 1.9601156 2.044894 2.1325798 2.222897 2.315438 2.4096718 2.504985 2.6006038 2.6957583 2.7896817 2.8816571 2.971074 3.0574455 3.140379 3.2196534 3.295136 3.3667536 3.4345462 3.4985638 3.5589185 3.6157234 3.6691084 3.7192197 3.766193 3.8101523 3.8512332 3.8895552 3.9252343 3.9583642 3.9890554 4.0173936 4.0434513 4.067315 4.089039 4.1086893 4.1263204 4.1419744 4.1556964 4.1675215 4.1774797 4.1855974 4.191894 4.1963863 4.1990867 4.1999927 4.2 4.1993904 4.1975517 4.1945157 4.1903133 4.184977 4.1785383 4.1710286 4.162481 4.152926 4.142396 4.130923 4.1185374 4.105271 4.0911546 4.0762186 4.0604935 4.044009 4.026795 4.0088797 3.990293 3.9710622 3.9512153 3.9307795 3.9097815 3.8882475 3.8662033 3.8436742 3.8206844 3.7972584 3.7734196 3.749191 3.7245948 3.6996531 3.6743872 3.6488178 3.6229649 3.5968485 3.5704873 3.5439003 3.517105 3.4901195 3.4629602 3.4356437 3.4081862 3.3806026 3.3529084 3.3251176 3.297244 3.2693017 3.2413032 3.2132611 3.1851876 3.1570942 3.1289923 3.1008928 3.072806 3.0447414 3.0167093 2.9887187 2.9607782 2.9328966 2.905082 2.877342 2.8496842 2.8221154 2.794643 2.767273 2.7400117 2.712865 2.6858387 2.658938 2.6321678 2.6055331 2.5790386 2.5526884 2.5264866 2.5004373 2.4745438 2.4488096 2.423238 2.3978322 2.3725948 2.3475285 2.3226357 2.2979188 2.2733798 2.2490208 2.2248435 2.2008498 2.1770408 2.153418 2.129983 2.1067364 2.0836794 2.060813 2.038138 2.0156546 1.9933637 1.9712658 1.949361 1.9276496 1.9061319 1.884808 1.8636775 1.8427408 1.8219975 1.8014474 1.7810901 1.7609255 1.740953 1.721172 1.7015821 1.6821827 1.6629732 1.6439527 1.6251206 1.6064762 1.5880185 1.5697467 1.5516598 1.5337571 1.5160375 1.4984998 1.4811431 1.4639665 1.4469688 1.4301487 1.4135053 1.3970374 1.3807436 1.3646231 1.3486743 1.3328961 1.3172874 1.3018467 1.2865729 1.2714647 1.2565207 1.2417396 1.2271203 1.2126613 1.1983612 1.1842188 1.1702327 1.1564015 1.142724 1.1291989 1.1158246 1.1026 1.0895236 1.076594 1.06381 1.0511701 1.0386732 1.0263176 1.0141022 1.0020257 0.99008656 0.9782836 0.9666154 0.9550807 0.94367814 0.9324064 0.9212643 0.9102503 0.8993633 0.8886019 0.8779649 0.86745095 0.8570588 0.8467872 0.83663493 0.8266007 0.81668323 0.80688137 0.7971939 0.7876195 0.77815706 0.7688053 0.75956315 0.75042933 0.74140275 0.73248214 0.7236664 0.71495444 0.7063451 0.6978372 0.6894296 0.6811213 0.67291117 0.6647981 0.65678096 0.6488588 0.64103043 0.6332949 0.6256511 0.61809814 0.6106348 0.60326016 0.59597325 0.588773 0.58165854 0.5746288 0.5676828 0.5608196 0.55403835 0.547338 0.5407177 0.53417647 0.5277134 0.5213276 0.5150183 0.5087844 0.50262517 0.49653974 0.49052718 0.48458675 0.4787175 0.4729187 0.46718946 0.461529 0.4559365 0.4504112 0.44495228 0.43955895 0.4342305 0.42896613 0.4237651 0.41862664 0.41355005 0.40853456 0.4035795 0.3986841 0.39384773 0.38906962 0.38434914 0.37968555 0.3750782 0.37052646 0.36602965 0.36158708 0.35719815 0.3528622 0.34857863 0.3443468 0.3401661 0.33603588 0.33195558 0.3279246 0.32394236 0.32000828 0.31612176 0.31228226 0.3084892 0.304742 0.30104017 0.29738313 0.29377037 0.29020134 0.28667548 0.28319237 0.2797514 0.2763521 0.272994 0.26967657 0.26639932 0.2631618 0.2599635 0.25680396 0.25368273 0.25059932 0.2475533 0.24454421 0.24157159 0.23863503 0.23573409 0.23286833 0.23003732 0.22724065 0.22447792 0.22174871 0.21905261 0.21638922 0.21375816 0.21115902 0.20859143 0.206055 0.20354937 0.20107415 0.19862898 0.1962135 0.19382733 0.19147015 0.18914159 0.18684131 0.18456896 0.1823242 0.18010671 0.17791615 0.17575221 0.17361455 0.17150286 0.16941682 0.16735612 0.16532046 0.16330953 0.16132304 0.15936068 0.15742217 0.15550722 0.15361553 0.15174684 0.14990085 0.14807731 0.14627592 0.14449644 0.14273858 0.14100207 0.1392867 0.13759217 0.13591823 0.13426465 0.13263117 0.13101754 0.12942353 0.12784891 0.12629342 0.12475686 0.12323897 0.121739544 0.120258346 0.118795164 0.117349766 0.11592195 0.1145115 0.113118194 0.11174183 0.110382214 0.10903913 0.10771237 0.10640176 0.105107084 0.103828155 0.10256478 0.10131677 0.10008394 0.098866105 0.09766308 0.09647469 0.095300764 0.0941411 0.092995554 0.091863945 0.0907461 0.08964185 0.08855103 0.087473474 0.08640904 0.08535755 0.08431885 0.08329278 0.0822792 0.08127795 0.08028888 0.07931184 0.07834669 0.077393286 0.07645147 0.07552112 0.07460209 0.07369424 0.07279743 0.071911536 0.07103642 0.07017195 0.069318004 0.06847444 0.06764115 0.066817984 0.06600484 0.065201595 0.06440812 0.0636243 0.06285001 0.062085155 0.0613296 0.060583238 0.059845954 0.059117645 0.0583982 0.057687506 0.05698546 0.056291956 0.055606894 0.054930165 0.054261673 0.053601313 0.05294899 0.052304603 0.05166806 0.05103926 0.050418116

</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="4.2" PeakHeight="296.012" Num="5" zHalfNm="262.986" Error="1.913">
-83.668 11.563 -7.376 3.895 -1.43
</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="6516.332" A="-1.15193962E11" B="3.5553692E7" C="-2743.215" Error="0.00175"/>
<QuasiParabolic ID="2" StartDistance="6516.332" EndDistance="6552.664" A="0.0" B="170.39433" C="0.01388627" Error="0.00275"/>
<QuasiParabolic ID="3" StartDistance="6552.664" EndDistance="6588.0" A="3.26940058E10" B="-1.0052815E7" C="772.7627" Error="0.00275"/>
<QuasiParabolic ID="4" StartDistance="6588.0" EndDistance="6589.0" A="4.6164413E12" B="-1.40159731E9" C="106384.82" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6589.0" EndDistance="6596.0" A="4.25344264E12" B="-1.29141402E9" C="98023.664" Error="0.0189"/>
<QuasiParabolic ID="6" StartDistance="6596.0" EndDistance="6606.0" A="4.617785E12" B="-1.40188774E9" C="106397.96" Error="0.00677"/>
<QuasiParabolic ID="7" StartDistance="6606.0" EndDistance="6614.0" A="8.6498209E12" B="-2.6226071E9" C="198792.7" Error="0.00165"/>
<QuasiParabolic ID="8" StartDistance="6614.0" EndDistance="6632.0" A="2.09810201E13" B="-6.3514245E9" C="480680.94" Error="0.0147"/>
<QuasiParabolic ID="9" StartDistance="6632.0" EndDistance="6666.012" A="-1.57386644E13" B="4.7220628E9" C="-354171.84" Error="0.00611"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="108.996" Depth="0.154"/>
<TopsideChapman PeakHeight="296.012" PeakDensity="218858.56" PeakScaleHeight="25.52" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
