<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-21 -052 07:30:00.000"
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 55 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 0% PACIFIC flags: F2x cusp not found, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, F2 cusps do not match, Unidentified traces above foF2, Trace overlaps while constructing baseline</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.02.21 (052) 07:30:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.16" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.96" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="85.88234" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202605202210730001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="23" >
<URSI ID="00" Val="3.250" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.354" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="10.900" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.075" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.075" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="280.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="280.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.225" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="341.631" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.075" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.075" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="286.256" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="259.554" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.374" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="38.488" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.120" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="19.294" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="42.450" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.500" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="48">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.075 2.1 2.125 2.15 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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
280.000 280.000 280.000 280.000 282.500 282.500 283.875 285.250 286.625 288.000 289.375 290.750 292.125 293.500 294.875 296.250 297.625 299.000 300.375 301.750 303.125 304.500 305.875 307.250 308.625 310.000 312.500 315.000 314.583 314.167 313.750 313.333 312.917 312.500 312.083 311.667 311.250 332.500 333.500 334.500 335.500 336.500 337.500 337.500 337.500 338.912 341.631 349.041
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 0 78 81 78 81 66 63 48 45 45 51 78 78 66 66 69 66 69 66 72 69 69 72 66 72 72 72 57 57 48 45 0 60 0 0 0 84 0 81 81 84 102 102 108 99 99 102
</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 -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="486">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 142.706 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 175.412 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 208.118 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 286.256 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0
</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 0.35354906 0.35298675 0.35220242 0.35119912 0.34998095 0.3485529 0.34684834 0.3449482 0.34278953 0.34031442 0.33767667 0.3347524 0.33162704 0.32818854 0.32446432 0.32042286 0.31615984 0.31153727 0.30655405 0.30127317 0.2956359 0.28961197 0.28317985 0.2763159 0.26890042 0.26106167 0.25262395 0.2435535 0.23381351 0.22334585 0.2120833 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 0.20276867 0.20747729 0.2121859 0.2168945 0.22160313 0.22631174 0.23102036 0.23572898 0.2404376 0.24514621 0.24985483 0.25456345 0.25927207 0.2639807 0.2686893 0.27339792 0.2781065 0.28281513 0.28752375 0.29223236 0.29694098 0.3016496 0.30635822 0.31106684 0.31577545 0.32048407 0.3251927 0.3299013 0.33460993 0.33931854 0.34402716 0.34873578 0.3534444 0.354 0.37496236 0.39801586 0.42091167 0.44403917 0.46765193 0.49194166 0.5170714 0.5431764 0.570364 0.59874535 0.6283837 0.65934575 0.6916617 0.7253508 0.7603779 0.796714 0.8342698 0.8729602 0.9126676 0.9532631 0.994608 1.0365765 1.0790391 1.1218879 1.1650113 1.2083106 1.2517312 1.2951963 1.3386556 1.382082 1.4254338 1.4686981 1.5118608 1.5549191 1.5978549 1.6406862 1.6833955 1.7260052 1.7685257 1.810945 1.8532914 1.8955693 1.937792 1.9799597 2.0221 2.0642097 2.106305 2.1483974 2.1905043 2.2326105 2.2747507 2.3169088 2.3591099 2.401346 2.4436195 2.4859343 2.5282788 2.5706441 2.613021 2.6553884 2.6977234 2.7399683 2.7820947 2.8240259 2.865664 2.906915 2.947607 2.9875565 3.026521 3.0641744 3.1001167 3.1338415 3.1647387 3.1920853 3.2150617 3.232825 3.244591 3.2497735 3.25 3.2495317 3.247456 3.2437725 3.238538 3.2318094 3.223644 3.214099 3.2032306 3.191096 3.177751 3.1632512 3.147651 3.1310043 3.1133647 3.0947838 3.0753126 3.0550013 3.0338986 3.0120518 2.9895077 2.966311 2.9425058 2.9181345 2.893238 2.8678567 2.842029 2.815792 2.789182 2.762233 2.734979 2.7074516 2.679682 2.6516995 2.6235328 2.5952084 2.5667531 2.538191 2.5095465 2.4808419 2.4520988 2.4233377 2.3945785 2.3658392 2.3371377 2.3084908 2.2799141 2.251423 2.223031 2.194752 2.1665983 2.1385815 2.1107132 2.0830035 2.0554624 2.0280986 2.0009208 1.973937 1.9471546 1.9205803 1.8942205 1.8680809 1.8421669 1.8164834 1.7910348 1.7658254 1.7408586 1.7161376 1.6916655 1.6674451 1.6434783 1.6197672 1.5963136 1.5731188 1.5501839 1.5275098 1.5050973 1.4829466 1.4610583 1.439432 1.4180678 1.3969654 1.3761241 1.3555435 1.3352227 1.3151606 1.2953564 1.2758087 1.2565163 1.2374778 1.2186917 1.2001563 1.1818701 1.1638312 1.1460379 1.1284882 1.1111801 1.0941117 1.0772808 1.0606853 1.0443232 1.028192 1.0122899 0.9966142 0.98116285 0.96593344 0.9509237 0.9361312 0.9215535 0.90718836 0.8930333 0.8790859 0.8653438 0.85180455 0.8384657 0.82532483 0.8123796 0.79962754 0.7870662 0.77469325 0.76250625 0.7505028 0.73868066 0.72703725 0.7155704 0.70427763 0.6931567 0.68220526 0.6714211 0.6608018 0.65034527 0.64004916 0.62991124 0.6199294 0.61010134 0.60042495 0.5908981 0.58151865 0.5722845 0.56319356 0.5542438 0.54543316 0.5367597 0.52822125 0.519816 0.51154196 0.50339717 0.49537972 0.4874878 0.4797195 0.47207296 0.4645464 0.45713806 0.4498461 0.44266883 0.43560448 0.4286514 0.42180786 0.4150722 0.40844283 0.4019181 0.39549646 0.38917625 0.382956 0.37683415 0.3708092 0.36487967 0.35904408 0.35330096 0.34764892 0.34208652 0.33661243 0.33122525 0.3259236 0.3207062 0.31557173 0.3105189 0.3055464 0.30065304 0.29583755 0.2910987 0.28643537 0.28184628 0.27733034 0.27288634 0.2685132 0.26420978 0.25997502 0.25580782 0.25170708 0.24767181 0.24370097 0.23979352 0.23594847 0.23216484 0.22844167 0.22477798 0.22117285 0.21762535 0.21413456 0.21069957 0.20731954 0.20399356 0.20072079 0.19750036 0.19433148 0.19121331 0.18814504 0.1851259 0.18215509 0.17923184 0.17635539 0.17352502 0.17073996 0.16799954 0.16530299 0.16264966 0.16003884 0.15746985 0.15494204 0.15245472 0.15000728 0.14759906 0.14522946 0.14289783 0.14060359 0.13834614 0.13612486 0.13393922 0.13178863 0.12967253 0.12759037 0.1255416 0.123525694 0.121542126 0.11959037 0.11766994 0.11578031 0.113920994 0.11209152 0.11029139 0.10852015 0.10677734 0.105062485 0.10337516 0.10171491 0.1000813 0.098473914 0.09689233 0.095336124 0.093804896 0.092298254 0.09081579 0.08935713 0.08792188 0.086509675 0.08512014 0.083752915 0.08240764 0.08108396 0.07978153 0.07850002 0.077239074 0.07599838 0.07477761 0.07357644 0.07239456 0.071231656 0.070087425 0.06896157 0.06785379 0.0667638 0.06569132 0.06463606 0.063597746 0.06257611 0.061570875 0.06058179 0.059608586 0.05865101 0.05770882 0.056781758 0.055869587 0.054972064 0.054088958 0.053220037 0.052365072 0.05152384 0.050696116

</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="3.25" PeakHeight="286.256" Num="5" zHalfNm="259.554" Error="1.581">
-71.298 -12.245 8.226 -3.988 1.167
</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="6512.706" A="-1.42003356E11" B="4.3828196E7" C="-3381.68" Error="0.0016"/>
<QuasiParabolic ID="2" StartDistance="6512.706" EndDistance="6545.412" A="0.0" B="-1176.6051" C="0.22069249" Error="0.0233"/>
<QuasiParabolic ID="3" StartDistance="6545.412" EndDistance="6575.0" A="5.7516438E10" B="-1.764297E7" C="1353.0007" Error="0.0233"/>
<QuasiParabolic ID="4" StartDistance="6575.0" EndDistance="6576.0" A="-1.38814292E12" B="4.22101312E8" C="-32087.63" Error="3.16E-11"/>
<QuasiParabolic ID="5" StartDistance="6576.0" EndDistance="6579.0" A="3.80953821E12" B="-1.15870195E9" C="88107.266" Error="0.039"/>
<QuasiParabolic ID="6" StartDistance="6579.0" EndDistance="6591.0" A="2.31803716E12" B="-7.0528922E8" C="53648.176" Error="0.029"/>
<QuasiParabolic ID="7" StartDistance="6591.0" EndDistance="6624.0" A="4.06443E12" B="-1.23522189E9" C="93849.41" Error="0.0328"/>
<QuasiParabolic ID="8" StartDistance="6624.0" EndDistance="6650.0" A="2.33136456E12" B="-7.1195334E8" C="54351.48" Error="0.00931"/>
<QuasiParabolic ID="9" StartDistance="6650.0" EndDistance="6656.256" A="-3.8175712E13" B="1.14706258E10" C="-861631.9" Error="0.00214"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="98.118" Depth="0.154"/>
<TopsideChapman PeakHeight="286.256" PeakDensity="131048.39" PeakScaleHeight="19.294" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
