<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-09 -099 04:40:00.000"
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: 90% PACIFIC flags: One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.09 (099) 04:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.19" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.97" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202609904090440001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.001" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="8.553" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.525" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.525" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.175" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="357.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="357.500" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.700" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="383.540" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.525" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.525" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="325.176" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="283.773" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.389" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="59.085" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.341" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="30.849" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="60.560" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.930" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="14">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
357.500 360.000 362.947 366.203 369.819 373.858 378.399 383.540 389.412 396.179 404.066 413.373 424.524 438.125
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 69 69 69 69 0 0 0 0 0 0 69 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 -7.8125 -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="685">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 147.08434 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 184.16867 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 221.253 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 325.176 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0 608.0 609.0 610.0 611.0 612.0 613.0 614.0 615.0 616.0 617.0 618.0 619.0 620.0 621.0 622.0 623.0 624.0 625.0 626.0 627.0 628.0 629.0 630.0 631.0 632.0 633.0 634.0 635.0 636.0 637.0 638.0 639.0 640.0 641.0 642.0 643.0 644.0 645.0 646.0 647.0 648.0 649.0 650.0 651.0 652.0 653.0 654.0 655.0 656.0 657.0 658.0 659.0 660.0 661.0 662.0 663.0 664.0 665.0 666.0 667.0 668.0 669.0 670.0 671.0 672.0 673.0 674.0 675.0 676.0 677.0 678.0 679.0 680.0 681.0 682.0 683.0 684.0 685.0 686.0 687.0 688.0 689.0 690.0 691.0 692.0 693.0 694.0 695.0 696.0 697.0 698.0 699.0 700.0 701.0 702.0 703.0 704.0 705.0 706.0 707.0 708.0 709.0 710.0 711.0 712.0 713.0 714.0 715.0 716.0 717.0 718.0 719.0 720.0 721.0 722.0 723.0 724.0 725.0 726.0 727.0 728.0 729.0 730.0 731.0 732.0 733.0 734.0 735.0 736.0 737.0 738.0 739.0 740.0 741.0 742.0 743.0 744.0 745.0 746.0 747.0 748.0 749.0 750.0 751.0 752.0 753.0 754.0 755.0 756.0 757.0 758.0 759.0 760.0 761.0 762.0 763.0 764.0 765.0 766.0 767.0 768.0 769.0 770.0 771.0 772.0 773.0
</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 0.35265058 0.35186794 0.35086685 0.34972504 0.34844565 0.34695974 0.34527344 0.34339368 0.3413982 0.33915433 0.33674225 0.3341049 0.33125648 0.3282122 0.3249255 0.32141808 0.3177127 0.3137755 0.30958116 0.30511338 0.3003658 0.29531813 0.29005888 0.28438622 0.2784116 0.27209428 0.26537064 0.25825265 0.25065818 0.24259442 0.23398402 0.22479108 0.21496181 0.204471 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 0.2 0.20345227 0.20760497 0.21175767 0.21591036 0.22006306 0.22421576 0.22836846 0.23252116 0.23667385 0.24082655 0.24497925 0.24913195 0.25328463 0.25743735 0.26159003 0.26574272 0.26989543 0.27404812 0.27820083 0.28235352 0.2865062 0.29065892 0.2948116 0.2989643 0.303117 0.3072697 0.3114224 0.3155751 0.31972778 0.3238805 0.32803318 0.3321859 0.33633858 0.34049127 0.34464398 0.34879667 0.35294938 0.354 0.36569715 0.38135767 0.39710546 0.41301477 0.42914397 0.4455473 0.46226147 0.47932625 0.4967755 0.5146349 0.5329356 0.5516962 0.5709449 0.59069306 0.61096394 0.63176614 0.6531155 0.67501366 0.6974775 0.7205018 0.7440921 0.76824456 0.7929578 0.8182172 0.84401524 0.87033886 0.897178 0.92450994 0.95231503 0.98057646 1.0092657 1.0383712 1.0678527 1.0976975 1.1278781 1.158373 1.1891476 1.220186 1.2514588 1.2829485 1.314631 1.3464812 1.3784736 1.4105994 1.4428308 1.4751564 1.5075471 1.5399941 1.5724714 1.604972 1.6374769 1.6699704 1.7024349 1.73486 1.767228 1.799524 1.8317342 1.8638425 1.8958411 1.9277042 1.959425 1.9909856 2.022365 2.0535517 2.0845354 2.115283 2.145788 2.1760309 2.2059882 2.2356358 2.2649589 2.293936 2.3225343 2.3507361 2.3785157 2.4058397 2.4326916 2.459028 2.48483 2.5100546 2.534678 2.5586631 2.581975 2.604575 2.6264262 2.6474955 2.6677349 2.6871138 2.7055907 2.723122 2.7396708 2.7552028 2.7696733 2.7830482 2.795293 2.8063753 2.8162591 2.824921 2.8323326 2.8384705 2.8433182 2.846859 2.8490818 2.8499794 2.85 2.8498025 2.849039 2.8477125 2.8458347 2.8434184 2.840475 2.8370173 2.8330574 2.8286076 2.82368 2.818287 2.8124404 2.806153 2.7994363 2.7923026 2.7847638 2.7768319 2.7685182 2.7598348 2.750793 2.7414043 2.7316797 2.7216308 2.7112684 2.7006032 2.6896465 2.6784081 2.666899 2.655129 2.6431084 2.6308472 2.618355 2.6056416 2.5927162 2.5795882 2.5662663 2.55276 2.5390773 2.525227 2.5112178 2.4970574 2.4827542 2.4683158 2.4537497 2.4390638 2.424265 2.4093604 2.3943572 2.3792622 2.3640819 2.3488226 2.3334908 2.3180928 2.3026342 2.2871208 2.2715585 2.2559528 2.2403088 2.2246318 2.2089267 2.1931987 2.177452 2.161692 2.1459224 2.1301482 2.114373 2.098601 2.0828364 2.067083 2.0513442 2.0356238 2.0199249 2.0042512 1.9886059 1.9729918 1.9574122 1.9418699 1.9263675 1.9109079 1.8954935 1.880127 1.8648105 1.8495464 1.8343371 1.8191844 1.8040906 1.7890575 1.7740868 1.7591805 1.7443404 1.7295678 1.7148645 1.7002318 1.6856713 1.6711842 1.6567718 1.6424353 1.6281759 1.6139946 1.5998925 1.5858705 1.5719297 1.5580707 1.5442944 1.5306016 1.5169929 1.5034692 1.4900309 1.4766785 1.4634128 1.4502339 1.4371426 1.424139 1.4112238 1.398397 1.3856591 1.3730102 1.3604505 1.3479804 1.3355998 1.3233091 1.3111081 1.298997 1.2869759 1.2750448 1.2632035 1.2514522 1.2397907 1.2282189 1.2167368 1.2053442 1.194041 1.182827 1.1717019 1.1606658 1.149718 1.1388588 1.1280876 1.1174042 1.1068084 1.0962998 1.0858781 1.075543 1.0652941 1.0551312 1.0450538 1.0350617 1.0251542 1.0153313 1.0055922 0.9959369 0.98636466 0.9768752 0.967468 0.9581427 0.94889885 0.93973595 0.93065363 0.9216513 0.91272855 0.9038849 0.8951199 0.886433 0.87782377 0.8692917 0.8608363 0.8524571 0.8441535 0.8359251 0.8277713 0.8196917 0.81168574 0.80375284 0.7958926 0.7881044 0.78038776 0.7727422 0.76516724 0.75766224 0.75022674 0.7428602 0.73556215 0.72833204 0.72116935 0.7140736 0.7070442 0.70008063 0.69318247 0.6863491 0.6795801 0.67287487 0.66623294 0.65965384 0.65313697 0.64668185 0.64028805 0.63395494 0.6276821 0.621469 0.6153152 0.60922015 0.6031833 0.59720427 0.5912825 0.5854175 0.5796088 0.57385594 0.5681584 0.56251574 0.5569274 0.551393 0.545912 0.540484 0.5351085 0.52978504 0.5245131 0.51929235 0.51412225 0.5090023 0.5039322 0.49891132 0.49393934 0.4890158 0.48414025 0.47931224 0.47453135 0.46979716 0.46510923 0.46046716 0.4558705 0.45131886 0.4468118 0.44234893 0.43792984 0.43355408 0.42922133 0.4249311 0.4206831 0.41647682 0.41231197 0.40818807 0.40410483 0.40006182 0.39605865 0.39209497 0.3881704 0.38428456 0.3804371 0.37662765 0.37285584 0.36912134 0.3654238 0.3617628 0.35813805 0.35454923 0.35099593 0.34747785 0.34399462 0.34054595 0.3371315 0.3337509 0.3304039 0.32709008 0.3238092 0.32056093 0.31734493 0.31416088 0.3110085 0.3078875 0.3047975 0.3017383 0.2987095 0.2957109 0.29274213 0.28980297 0.28689307 0.28401217 0.28116 0.27833626 0.27554068 0.27277297 0.27003288 0.26732016 0.2646345 0.26197565 0.25934333 0.25673732 0.25415733 0.25160313 0.24907443 0.24657102 0.24409261 0.241639 0.23920992 0.23680513 0.23442438 0.23206747 0.22973412 0.22742413 0.22513726 0.22287329 0.22063196 0.21841308 0.21621643 0.21404177 0.2118889 0.20975758 0.20764762 0.2055588 0.20349091 0.20144376 0.19941711 0.19741079 0.19542459 0.19345829 0.19151172 0.18958466 0.18767694 0.18578835 0.1839187 0.18206781 0.18023549 0.17842156 0.17662583 0.17484812 0.17308827 0.17134607 0.16962136 0.16791397 0.16622372 0.16455045 0.16289397 0.16125414 0.15963076 0.1580237 0.15643278 0.15485784 0.15329872 0.15175527 0.15022732 0.14871474 0.14721733 0.145735 0.14426754 0.14281484 0.14137675 0.13995309 0.13854377 0.1371486 0.13576746 0.1344002 0.1330467 0.1317068 0.13038038 0.12906729 0.1277674 0.1264806 0.12520672 0.12394567 0.122697294 0.12146148 0.120238096 0.11902701 0.117828116 0.11664128 0.115466386 0.114303306 0.11315193 0.11201214 0.110883825 0.109766856 0.10866112 0.10756652 0.10648294 0.105410255 0.10434836 0.10329717 0.102256544 0.1012264 0.10020661 0.0991971 0.09819774 0.097208455 0.09622911 0.09525964 0.09429992 0.09334986 0.092409365 0.09147834 0.09055669 0.08964431 0.08874113 0.08784703 0.08696194 0.08608576 0.0852184 0.08435977 0.083509795 0.08266838 0.08183543 0.08101086 0.08019461 0.07938657 0.07858667 0.07779483 0.07701095 0.07623498 0.07546682 0.07470639 0.07395362 0.07320844 0.072470754 0.07174051 0.07101761 0.070301995 0.069593586 0.068892315 0.06819811 0.06751089 0.0668306 0.066157155 0.0654905 0.06483056 0.06417726 0.06353055 0.06289034 0.062256597 0.06162923 0.06100818 0.060393393 0.059784796 0.059182327 0.05858593 0.057995543 0.057411104 0.05683255 0.056259826 0.05569287 0.05513163 0.05457604 0.05402605 0.0534816 0.052942637 0.0524091 0.05188094 0.051358104 0.050840534 0.05032818

</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="2.85" PeakHeight="325.176" Num="5" zHalfNm="283.773" Error="1.093">
-102.022 -3.375 2.23 -1.285 0.529
</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="6517.084" A="-1.1059259E11" B="3.4133516E7" C="-2633.6335" Error="0.00177"/>
<QuasiParabolic ID="2" StartDistance="6517.084" EndDistance="6554.169" A="0.0" B="795.2091" C="-0.08198223" Error="0.0163"/>
<QuasiParabolic ID="3" StartDistance="6554.169" EndDistance="6591.0" A="2.57915474E10" B="-7948243.5" C="612.33777" Error="0.0163"/>
<QuasiParabolic ID="4" StartDistance="6591.0" EndDistance="6592.0" A="8.7789997E12" B="-2.66405734E9" C="202107.5" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6592.0" EndDistance="6605.0" A="6.6868163E11" B="-2.03402784E8" C="15468.036" Error="0.0186"/>
<QuasiParabolic ID="6" StartDistance="6605.0" EndDistance="6658.0" A="2.15723868E12" B="-6.541392E8" C="49588.887" Error="0.0154"/>
<QuasiParabolic ID="7" StartDistance="6658.0" EndDistance="6680.0" A="-1.31855195E12" B="3.89955296E8" C="-28820.133" Error="0.00536"/>
<QuasiParabolic ID="8" StartDistance="6680.0" EndDistance="6695.176" A="-7.1033527E12" B="2.12193165E9" C="-158459.08" Error="0.00213"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="111.253" Depth="0.154"/>
<TopsideChapman PeakHeight="325.176" PeakDensity="100775.44" PeakScaleHeight="30.849" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
