<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-20 -110 05:05:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 50% PACIFIC flags: F2o cusp not found, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.20 (110) 05:05:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.20" 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">
FF202611004200505001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.270" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="7.684" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.125" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.125" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="2.650" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="307.604" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="307.604" 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="0.025" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.225" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="330.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.125" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.125" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="291.126" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="260.880" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.383" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="42.954" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.681" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="22.837" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="43.220" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.120" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="10">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.125 2.15 2.175 2.2 2.225 2.25 2.275 2.3 2.325 2.35
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
307.604 312.500 317.500 325.000 330.000 337.500 347.500 355.000 365.000 377.804
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 72 0 69 0 0 0 0 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 10.9375 -1.5625 10.9375 10.9375 -1.5625 -7.8125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="521">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 147.013 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 184.026 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 221.039 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 291.126 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0 608.0 609.0
</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 0.3413282 0.33908543 0.33667454 0.33397174 0.33112615 0.3280849 0.32480147 0.32129753 0.3175958 0.31360513 0.30936158 0.30490276 0.3001647 0.29512712 0.28978553 0.2841301 0.27809146 0.27172363 0.26496452 0.2578273 0.25017536 0.24209046 0.23341753 0.22418202 0.21431084 0.20371747 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 0.20405252 0.20821323 0.21237393 0.21653463 0.22069532 0.22485602 0.22901672 0.23317742 0.23733813 0.24149883 0.24565953 0.24982023 0.25398093 0.25814164 0.26230234 0.26646304 0.2706237 0.27478442 0.27894512 0.28310582 0.28726652 0.29142722 0.29558793 0.29974863 0.30390933 0.30807003 0.31223074 0.31639144 0.32055214 0.32471284 0.32887354 0.33303422 0.33719492 0.34135562 0.34551632 0.34967703 0.35383773 0.354 0.37270793 0.39299044 0.41409138 0.4360024 0.45872048 0.48223665 0.5065434 0.5316344 0.55750763 0.5841614 0.611591 0.63978815 0.66875446 0.6984807 0.72896034 0.7601946 0.7921673 0.82486975 0.8582879 0.89240766 0.927215 0.96267825 0.9987817 1.0354868 1.0727694 1.1105878 1.1489034 1.1876748 1.226844 1.2663685 1.3061845 1.3462259 1.3864315 1.4267321 1.4670588 1.5073352 1.5474908 1.587435 1.62709 1.6663924 1.7052375 1.7435676 1.7812846 1.8183218 1.854594 1.8900396 1.9245703 1.958125 1.9906417 2.0220506 2.0522954 2.0813136 2.1090572 2.1354728 2.160521 2.184148 2.2063272 2.2270133 2.2461739 2.2637844 2.2798157 2.294243 2.3070493 2.318209 2.3277128 2.3355455 2.3416965 2.3461573 2.3489215 2.3499916 2.35 2.3496666 2.3484812 2.3464615 2.343632 2.3400176 2.335643 2.3305333 2.3247132 2.3182077 2.3110416 2.303239 2.2948244 2.285822 2.2762554 2.2661483 2.2555237 2.2444043 2.232813 2.2207713 2.208301 2.1954236 2.1821594 2.1685293 2.1545527 2.140249 2.1256373 2.1107357 2.0955627 2.080135 2.0644705 2.048585 2.0324948 2.016215 1.9997615 1.983148 1.966389 1.949498 1.9324883 1.9153726 1.8981632 1.8808718 1.8635098 1.8460883 1.8286178 1.8111085 1.79357 1.7760121 1.7584432 1.7408723 1.7233076 1.7057569 1.6882278 1.6707276 1.6532631 1.6358409 1.6184672 1.6011481 1.5838894 1.5666962 1.5495737 1.532527 1.5155604 1.4986784 1.4818853 1.4651847 1.4485804 1.432076 1.4156744 1.399379 1.3831924 1.3671175 1.3511566 1.3353121 1.3195862 1.3039808 1.2884978 1.2731388 1.2579054 1.242799 1.227821 1.2129724 1.1982543 1.1836678 1.1692133 1.1548918 1.1407039 1.1266501 1.1127307 1.0989462 1.0852968 1.0717825 1.0584035 1.0451599 1.0320516 1.0190785 1.0062402 0.9935369 0.9809679 0.96853304 0.9562319 0.94406396 0.9320288 0.92012584 0.9083546 0.89671427 0.8852044 0.8738242 0.8625729 0.8514499 0.8404543 0.8295854 0.8188422 0.808224 0.7977299 0.787359 0.77711034 0.76698303 0.7569762 0.74708873 0.73731977 0.7276683 0.71813333 0.7087138 0.6994088 0.69021726 0.68113816 0.67217046 0.6633131 0.65456504 0.6459252 0.63739264 0.6289662 0.62064487 0.6124276 0.6043133 0.596301 0.5883896 0.5805779 0.57286507 0.56525 0.55773157 0.55030876 0.54298055 0.535746 0.52860385 0.5215533 0.5145932 0.50772256 0.5009404 0.49424568 0.4876374 0.48111457 0.47467622 0.46832135 0.46204898 0.45585817 0.44974795 0.44371736 0.43776545 0.43189126 0.4260939 0.42037246 0.41472596 0.40915355 0.4036543 0.39822733 0.39287174 0.38758668 0.38237125 0.37722462 0.37214595 0.36713436 0.36218902 0.35730913 0.35249385 0.34774238 0.3430539 0.33842763 0.3338628 0.3293586 0.3249143 0.32052913 0.3162023 0.31193313 0.30772084 0.3035647 0.299464 0.29541802 0.29142606 0.28748745 0.2836015 0.27976748 0.27598476 0.27225265 0.26857054 0.26493773 0.2613536 0.25781754 0.25432885 0.250887 0.24749133 0.24414124 0.24083614 0.23757544 0.23435855 0.23118491 0.22805393 0.22496507 0.22191776 0.21891147 0.21594563 0.21301973 0.21013324 0.20728563 0.20447639 0.20170501 0.19897099 0.19627383 0.19361305 0.19098815 0.18839867 0.18584415 0.1833241 0.18083806 0.1783856 0.17596625 0.17357959 0.17122516 0.16890255 0.16661131 0.16435106 0.16212136 0.1599218 0.15775196 0.15561149 0.15349996 0.151417 0.14936222 0.14733523 0.14533567 0.1433632 0.1414174 0.13949794 0.13760448 0.13573664 0.1338941 0.13207652 0.13028353 0.12851486 0.12677012 0.12504904 0.12335127 0.1216765 0.12002443 0.11839474 0.11678714 0.11520133 0.11363702 0.11209391 0.11057173 0.109070174 0.107588984 0.10612787 0.10468658 0.10326483 0.10186236 0.10047892 0.09911423 0.09776806 0.09644015 0.09513026 0.09383813 0.09256353 0.09130623 0.090065986 0.08884257 0.08763576 0.086445324 0.08527104 0.0841127 0.08297007 0.08184295 0.08073113 0.079634406 0.07855257 0.077485405 0.076432735 0.075394355 0.07437007 0.07335969 0.07236303 0.0713799 0.07041012 0.0694535 0.06850988 0.06757906 0.06666088 0.06575517 0.06486177 0.06398049 0.06311118 0.062253676 0.06140782 0.060573447 0.059750404 0.058938544 0.058137707 0.05734775 0.056568515 0.055799868 0.055041663 0.05429375 0.053556003 0.052828275 0.05211043 0.051402338 0.05070386 0.050014876

</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="2.35" PeakHeight="291.126" Num="5" zHalfNm="260.88" Error="0.793">
-70.572 0.838 -0.557 0.275 -0.071
</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="6517.013" A="-1.11016215E11" B="3.4264264E7" C="-2643.7222" Error="0.00178"/>
<QuasiParabolic ID="2" StartDistance="6517.013" EndDistance="6554.026" A="0.0" B="446.2057" C="-0.028431933" Error="0.00877"/>
<QuasiParabolic ID="3" StartDistance="6554.026" EndDistance="6590.0" A="2.77111788E10" B="-8531592.0" C="656.65533" Error="0.00877"/>
<QuasiParabolic ID="4" StartDistance="6590.0" EndDistance="6593.0" A="4.8144376E12" B="-1.46125581E9" C="110878.52" Error="0.0143"/>
<QuasiParabolic ID="5" StartDistance="6593.0" EndDistance="6600.0" A="1.20313151E12" B="-3.65758784E8" C="27798.209" Error="0.0126"/>
<QuasiParabolic ID="6" StartDistance="6600.0" EndDistance="6637.0" A="3.15429303E12" B="-9.5701984E8" C="72590.71" Error="0.0189"/>
<QuasiParabolic ID="7" StartDistance="6637.0" EndDistance="6652.0" A="-4.9000434E12" B="1.47008166E9" C="-110255.56" Error="0.00559"/>
<QuasiParabolic ID="8" StartDistance="6652.0" EndDistance="6661.126" A="-7.7017614E12" B="2.3124503E9" C="-173572.5" Error="3.4E-4"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="111.039" Depth="0.154"/>
<TopsideChapman PeakHeight="291.126" PeakDensity="68517.37" PeakScaleHeight="22.837" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
