<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-21 -052 07:55:00.000"
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="20.0">
<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: 20% 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</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.02.21 (052) 07:55:00</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">
FF202605202210755001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="23" >
<URSI ID="00" Val="3.425" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.237" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.088" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.200" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.200" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="327.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="327.500" 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="3.350" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="355.909" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.850" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.850" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="305.620" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="276.762" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.398" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="42.254" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.369" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="20.729" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="50.680" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.200" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="50">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 3.275 3.3 3.325 3.35 3.375 3.4 3.425
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
337.500 337.500 336.250 335.000 334.674 334.348 334.022 333.696 333.370 333.043 332.717 332.391 332.065 331.739 331.413 331.087 330.761 330.435 330.109 329.783 329.457 329.130 328.804 328.478 328.152 327.826 327.500 332.500 332.500 332.500 332.500 334.167 335.833 337.500 339.167 340.833 342.500 344.167 345.833 347.500 347.998 348.603 349.355 350.315 351.583 353.333 355.909 360.073 367.948 388.482
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 45 0 27 0 30 30 48 0 57 60 48 45 0 0 51 0 54 51 51 48 0 0 0 0 30 30 48 0 0 45 0 0 60 63 69 0 75 81 75 78 0 75 69 72 0 81 87 78 66
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
3.125 -3.125 3.125 3.125 -3.125 -3.125 3.125 3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 3.125 3.125 3.125 -3.125 3.125 3.125 3.125 3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 3.125 -3.125 -3.125 3.125 -3.125 -3.125 -3.125 -3.125 3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 3.125 -3.125 -3.125 -3.125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="531">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 141.43567 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 172.87134 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 204.307 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 305.62 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0 608.0 609.0 610.0 611.0 612.0 613.0 614.0 615.0 616.0 617.0 618.0 619.0
</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 0.3529118 0.35205317 0.35097662 0.34968653 0.34811512 0.3462709 0.34416395 0.34180582 0.3392093 0.3363204 0.33315867 0.32968017 0.32594427 0.32191625 0.31754085 0.31280592 0.30776602 0.30231982 0.29647443 0.29030344 0.28364533 0.2764979 0.26884064 0.26067254 0.25181457 0.24232705 0.2321173 0.22104561 0.20908414 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 0.20063032 0.20552921 0.21042812 0.21532701 0.2202259 0.22512479 0.23002368 0.23492259 0.23982148 0.24472037 0.24961926 0.25451815 0.25941706 0.26431593 0.26921484 0.27411374 0.27901262 0.28391153 0.2888104 0.2937093 0.2986082 0.3035071 0.308406 0.3133049 0.31820378 0.32310268 0.32800156 0.33290046 0.33779937 0.34269825 0.34759715 0.35249603 0.354 0.3638757 0.37872624 0.3943211 0.4107061 0.42791954 0.44599503 0.46496156 0.48483768 0.50563747 0.5273619 0.5499997 0.5735245 0.5979065 0.6230991 0.6490398 0.675667 0.7029145 0.7307175 0.758997 0.78769165 0.8167314 0.84606326 0.875631 0.90538967 0.935296 0.96532226 0.9954321 1.0256089 1.0558227 1.086072 1.1163363 1.1466055 1.1768776 1.2071506 1.237422 1.2676808 1.2979407 1.3281982 1.3584571 1.3887169 1.418988 1.4492683 1.4795663 1.5098895 1.5402441 1.570628 1.6010528 1.631528 1.662055 1.6926408 1.7232972 1.7540214 1.7848283 1.8157305 1.8467195 1.8778102 1.9090203 1.940341 1.971785 2.0033667 2.0350864 2.0669627 2.0989885 2.1311848 2.1635568 2.196115 2.2288642 2.2618172 2.2949898 2.32838 2.362001 2.3958685 2.4299917 2.4643843 2.49905 2.5340118 2.569265 2.6048334 2.6407318 2.676962 2.7135386 2.7504709 2.787771 2.825444 2.8634925 2.9019196 2.94071 2.9798605 3.0193374 3.0591016 3.0990658 3.1391213 3.1791136 3.2187788 3.257735 3.2954266 3.331023 3.363339 3.3907673 3.4113145 3.4229436 3.425 3.4248881 3.4235382 3.4206972 3.4164126 3.4107327 3.4037066 3.395382 3.3858078 3.3750324 3.3631034 3.3500688 3.3359756 3.3208704 3.304799 3.287807 3.2699387 3.2512376 3.2317472 3.2115088 3.190564 3.1689522 3.1467133 3.123885 3.1005044 3.0766077 3.05223 3.0274048 3.0021656 2.9765441 2.950571 2.9242766 2.8976893 2.8708372 2.8437467 2.816444 2.7889535 2.7612996 2.7335048 2.7055914 2.6775804 2.6494918 2.6213453 2.5931592 2.5649514 2.5367384 2.5085368 2.4803615 2.4522276 2.4241483 2.3961375 2.3682075 2.34037 2.3126364 2.2850173 2.2575228 2.2301626 2.2029452 2.1758792 2.1489727 2.1222332 2.0956671 2.0692813 2.0430818 2.017074 1.9912636 1.9656552 1.9402533 1.9150618 1.890085 1.8653258 1.8407878 1.8164736 1.7923859 1.7685269 1.7448988 1.7215031 1.6983417 1.6754158 1.6527264 1.6302745 1.608061 1.5860862 1.5643506 1.5428543 1.5215974 1.5005798 1.4798013 1.4592614 1.4389597 1.4188955 1.3990681 1.3794768 1.3601203 1.3409979 1.3221084 1.3034506 1.2850231 1.2668246 1.2488537 1.2311089 1.2135887 1.1962914 1.1792156 1.1623592 1.1457208 1.1292986 1.1130905 1.097095 1.08131 1.0657337 1.050364 1.0351992 1.0202372 1.005476 0.9909136 0.976548 0.9623772 0.9483991 0.9346117 0.92101294 0.90760076 0.8943731 0.8813279 0.86846316 0.8557768 0.84326667 0.8309308 0.8187672 0.8067738 0.7949485 0.7832893 0.77179426 0.76046133 0.74928856 0.73827386 0.7274154 0.71671104 0.706159 0.6957573 0.685504 0.6753972 0.6654351 0.6556156 0.6459371 0.6363976 0.6269953 0.6177285 0.6085952 0.5995938 0.59072244 0.58197945 0.573363 0.5648715 0.5565032 0.5482564 0.5401295 0.53212076 0.5242287 0.51645166 0.508788 0.5012362 0.49379474 0.48646203 0.47923657 0.47211692 0.4651015 0.45818892 0.45137772 0.44466648 0.4380538 0.43153822 0.42511845 0.4187931 0.41256082 0.4064203 0.4003702 0.3944093 0.38853627 0.38274986 0.37704882 0.37143198 0.36589804 0.3604459 0.35507432 0.34978217 0.34456828 0.33943152 0.33437082 0.32938504 0.32447308 0.3196339 0.31486642 0.31016964 0.30554247 0.30098394 0.29649302 0.29206875 0.28771016 0.28341627 0.27918613 0.27501884 0.27091345 0.26686907 0.2628848 0.25895977 0.25509307 0.2512839 0.24753137 0.24383467 0.24019298 0.23660548 0.23307137 0.22958988 0.22616021 0.22278163 0.21945335 0.21617465 0.21294479 0.20976305 0.20662872 0.20354111 0.20049952 0.19750325 0.19455166 0.19164409 0.18877986 0.18595834 0.1831789 0.18044093 0.17774379 0.17508689 0.17246963 0.16989142 0.16735168 0.16484985 0.16238534 0.15995763 0.15756616 0.15521038 0.15288977 0.15060382 0.14835198 0.14613377 0.14394869 0.14179623 0.13967593 0.13758728 0.13552985 0.13350312 0.13150668 0.12954007 0.12760283 0.12569454 0.123814754 0.121963054 0.120139025 0.11834225 0.11657232 0.11482885 0.11311142 0.11141966 0.10975319 0.10811162 0.10649459 0.10490172 0.10333267 0.10178707 0.10026457 0.09876483 0.09728751 0.09583227 0.0943988 0.09298675 0.091595806 0.09022567 0.088876 0.08754653 0.086236924 0.08494691 0.083676174 0.08242445 0.08119143 0.07997686 0.07878044 0.07760192 0.07644102 0.07529748 0.074171044 0.07306145 0.07196845 0.070891805 0.06983125 0.06878656 0.067757495 0.06674382 0.06574531 0.06476173 0.06379286 0.06283849 0.06189838 0.06097234 0.06006015 0.059161603 0.058276497 0.05740463 0.056545805 0.055699825 0.0548665 0.05404564 0.05323706 0.05244057 0.051655997 0.050883163 0.050121885

</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="3.425" PeakHeight="305.62" Num="5" zHalfNm="276.762" Error="2.134">
-85.975 -25.756 15.456 -5.886 0.848
</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="6511.436" A="-1.53660293E11" B="4.7426016E7" C="-3659.2896" Error="0.00159"/>
<QuasiParabolic ID="2" StartDistance="6511.436" EndDistance="6542.871" A="0.0" B="257.6767" C="4.5020634E-4" Error="0.00417"/>
<QuasiParabolic ID="3" StartDistance="6542.871" EndDistance="6572.0" A="3.8994211E10" B="-1.2006438E7" C="924.1964" Error="0.00674"/>
<QuasiParabolic ID="4" StartDistance="6572.0" EndDistance="6581.0" A="1.55795351E12" B="-4.74258176E8" C="36092.47" Error="0.017"/>
<QuasiParabolic ID="5" StartDistance="6581.0" EndDistance="6643.0" A="1.96516486E12" B="-5.9801184E8" C="45494.81" Error="0.0144"/>
<QuasiParabolic ID="6" StartDistance="6643.0" EndDistance="6665.0" A="4.7242884E12" B="-1.42869786E9" C="108018.22" Error="0.00308"/>
<QuasiParabolic ID="7" StartDistance="6665.0" EndDistance="6672.0" A="-1.86362547E12" B="5.4817056E8" C="-40283.984" Error="0.00267"/>
<QuasiParabolic ID="8" StartDistance="6672.0" EndDistance="6675.62" A="-6.4411536E13" B="1.92975442E10" C="-1445362.9" Error="9.12E-4"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="94.307" Depth="0.154"/>
<TopsideChapman PeakHeight="305.62" PeakDensity="145541.25" PeakScaleHeight="20.729" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
