<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-21 -052 05:30:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 40% PACIFIC flags: F2o cusp not found, Multiple candidates for F2x cusp, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, Unidentified traces above foF2</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.02.21 (052) 05:30:00</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">
FF202605202210530001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="7.125" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.934" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.032" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="225.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="225.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.125" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="262.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="238.537" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="228.208" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.057" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="15.767" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="2.706" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="10.583" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="18.600" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.090" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="206">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.0 2.025 2.05 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 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 4.225 4.25 4.275 4.3 4.325 4.35 4.375 4.4 4.425 4.45 4.475 4.5 4.525 4.55 4.575 4.6 4.625 4.65 4.675 4.7 4.725 4.75 4.775 4.8 4.825 4.85 4.875 4.9 4.925 4.95 4.975 5.0 5.025 5.05 5.075 5.1 5.125 5.15 5.175 5.2 5.225 5.25 5.275 5.3 5.325 5.35 5.375 5.4 5.425 5.45 5.475 5.5 5.525 5.55 5.575 5.6 5.625 5.65 5.675 5.7 5.725 5.75 5.775 5.8 5.825 5.85 5.875 5.9 5.925 5.95 5.975 6.0 6.025 6.05 6.075 6.1 6.125 6.15 6.175 6.2 6.225 6.25 6.275 6.3 6.325 6.35 6.375 6.4 6.425 6.45 6.475 6.5 6.525 6.55 6.575 6.6 6.625 6.65 6.675 6.7 6.725 6.75 6.775 6.8 6.825 6.85 6.875 6.9 6.925 6.95 6.975 7.0 7.025 7.05 7.075 7.1 7.125
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 226.250 227.500 227.500 226.667 225.833 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 225.000 227.500 230.000 230.000 230.000 230.000 230.000 227.500 227.500 228.182 228.864 229.545 230.227 230.909 231.591 232.273 232.955 233.636 234.318 235.000 235.833 236.667 237.500 235.833 234.167 232.500 232.500 232.500 233.750 235.000 235.000 235.000 235.000 235.000 235.000 235.000 232.500 230.000 230.000 230.000 230.000 235.000 235.000 233.333 231.667 230.000 230.000 235.000 235.000 232.500 230.000 230.000 230.000 230.000 230.000 230.000 232.500 235.000 230.000 235.000 230.000 231.250 232.500 230.000 230.000 230.000 231.667 233.333 235.000 232.500 232.500 232.500 232.500 232.500 237.500 237.500 237.500 237.500 237.500 235.000 235.000 235.000 235.000 233.750 232.500 235.000 237.500 237.500 237.500 235.000 235.000 235.000 235.000 235.000 235.000 235.000 235.000 235.000 235.000 235.000 235.000 236.250 237.500 236.250 235.000 235.000 235.833 236.667 237.500 237.500 240.000 240.000 241.250 242.500 245.625 248.750 251.875 255.000 252.500 250.000 252.500 252.636 252.773 252.909 253.045 253.182 253.318 253.455 253.591 253.727 253.864 254.000 254.136 254.273 254.409 254.545 254.682 254.818 254.955 255.091 255.227 255.364 255.500 255.636 255.773 255.909 256.045 256.182 256.318 256.455 256.591 256.727 256.864 257.000 257.136 257.273 257.409 257.545 257.682 257.818 257.955 258.091 258.227 258.364 258.500 258.636 258.773 258.909 259.045 259.182 259.318 259.455 259.591 259.727 259.864 260.000 260.278 260.556 260.833 261.111 261.389 261.667 261.944 262.222 262.500
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 81 81 81 81 96 96 69 66 69 72 60 57 69 72 72 72 78 75 87 84 78 78 66 54 66 0 63 72 72 0 60 66 36 54 36 33 0 0 0 0 72 69 84 0 0 0 0 90 0 87 93 90 66 60 105 99 93 96 90 90 93 75 75 81 81 87 87 75 69 0 81 78 93 96 63 75 114 0 105 108 75 75 114 114 102 99 90 84 99 102 99 99 105 108 90 93 63 60 66 72 96 93 75 78 99 102 96 90 0 96 96 90 111 111 75 78 78 75 75 78 75 0 57 66 78 75 69 69 102 105 105 99 102 105 57 0 0 0 0 57 54 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 84 0 0 0 0 0 0 0 84 84 0 0 0 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 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 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 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 -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 4.6875 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="335">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 136.83333 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 163.66667 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 190.5 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 238.537 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0
</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 0.353812 0.35332385 0.35253775 0.3513833 0.34986797 0.34800196 0.34587008 0.3433416 0.34043694 0.33717975 0.3335292 0.3294542 0.3250611 0.3201454 0.31483623 0.30908883 0.30277678 0.29597685 0.28861925 0.2806141 0.2719544 0.2625736 0.25233817 0.24117032 0.22898808 0.2156547 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 0.20191304 0.20765217 0.2133913 0.21913044 0.22486956 0.2306087 0.23634782 0.24208696 0.24782608 0.25356522 0.25930434 0.26504347 0.27078262 0.27652174 0.28226086 0.288 0.29373914 0.29947826 0.3052174 0.3109565 0.31669566 0.32243478 0.3281739 0.33391306 0.33965218 0.3453913 0.35113043 0.354 0.40981716 0.48738357 0.55612874 0.62324727 0.69104415 0.76064974 0.83273137 0.90771705 0.98591214 1.06755 1.1528045 1.2417686 1.3345469 1.4311634 1.5316849 1.6361072 1.7444428 1.8567157 1.9728959 2.0929997 2.2170415 2.345065 2.4770427 2.6130362 2.7531054 2.8972654 3.045671 3.1983283 3.3554287 3.5170286 3.6833446 3.8544927 4.0306535 4.2120576 4.398961 4.591551 4.7900953 4.9948483 5.2059913 5.4237304 5.647967 5.8783026 6.1137705 6.3517957 6.587098 6.8086085 6.994342 7.107806 7.125 7.1236806 7.1120896 7.0891657 7.0556664 7.0123487 6.9599624 6.899246 6.8309197 6.755682 6.674206 6.5871387 6.4950967 6.3986664 6.298403 6.194829 6.0884356 5.9796834 5.869 5.756784 5.643404 5.5292006 5.414487 5.2995496 5.184652 5.070032 4.9559073 4.8424735 4.729907 4.6183653 4.5079894 4.398905 4.291221 4.1850343 4.0804286 3.9774761 3.8762376 3.7767646 3.679099 3.583275 3.489319 3.3972502 3.307082 3.2188215 3.1324716 3.04803 2.9654899 2.884842 2.8060722 2.7291648 2.6541007 2.5808585 2.5094151 2.4397457 2.3718238 2.3056219 2.241111 2.1782615 2.1170428 2.0574243 1.9993742 1.9428607 1.8878521 1.834316 1.7822205 1.7315332 1.6822224 1.6342561 1.5876029 1.5422313 1.4981107 1.4552103 1.4135 1.37295 1.333531 1.2952143 1.2579716 1.221775 1.1865973 1.1524118 1.1191921 1.0869126 1.0555483 1.0250745 0.9954671 0.9667027 0.9387583 0.91161144 0.88524026 0.8596234 0.83474 0.81056964 0.7870926 0.7642896 0.7421417 0.7206306 0.6997383 0.67944753 0.6597413 0.64060307 0.6220168 0.6039668 0.5864379 0.5694152 0.5528844 0.5368314 0.5212426 0.50610477 0.49140492 0.47713062 0.4632696 0.44981003 0.4367404 0.42404947 0.41172642 0.3997606 0.38814175 0.37685987 0.36590528 0.3552685 0.3449404 0.33491203 0.32517475 0.31572014 0.30654007 0.29762655 0.2889719 0.2805686 0.27240944 0.26448727 0.2567953 0.24932678 0.2420753 0.23503456 0.22819842 0.22156098 0.21511646 0.20885928 0.20278397 0.1968853 0.19115812 0.18559743 0.18019843 0.17495643 0.16986683 0.16492525 0.16012736 0.155469 0.15094611 0.14655475 0.14229111 0.13815148 0.13413225 0.13022992 0.12644109 0.12276247 0.11919086 0.115723126 0.11235627 0.10908735 0.10591352 0.10283202 0.09984016 0.096935324 0.094115004 0.09137673 0.08871812 0.08613685 0.083630666 0.0811974 0.07883493 0.076541185 0.07431417 0.07215195 0.07005264 0.0680144 0.066035464 0.0641141 0.06224864 0.060437456 0.058678962 0.056971636 0.055313982 0.053704556 0.052141957 0.050624825

</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="7.125" PeakHeight="238.537" Num="5" zHalfNm="228.208" Error="1.428">
-40.566 -13.177 6.611 -1.425 0.52
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="11" 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="6506.833" A="-2.10612257E11" B="6.5003784E7" C="-5015.5986" Error="0.00148"/>
<QuasiParabolic ID="2" StartDistance="6506.833" EndDistance="6533.667" A="0.0" B="1735.4802" C="-0.22669737" Error="0.0269"/>
<QuasiParabolic ID="3" StartDistance="6533.667" EndDistance="6560.0" A="3.6104434E10" B="-1.1166954E7" C="863.4205" Error="0.0269"/>
<QuasiParabolic ID="4" StartDistance="6560.0" EndDistance="6561.0" A="7.1973141E13" B="-2.19431916E10" C="1672511.6" Error="1.89E-9"/>
<QuasiParabolic ID="5" StartDistance="6561.0" EndDistance="6564.0" A="-3.60866696E12" B="1.09653171E9" C="-83297.17" Error="0.0373"/>
<QuasiParabolic ID="6" StartDistance="6564.0" EndDistance="6575.0" A="1.82145809E13" B="-5.5528428E9" C="423206.06" Error="0.0228"/>
<QuasiParabolic ID="7" StartDistance="6575.0" EndDistance="6591.0" A="4.9616003E13" B="-1.51046062E10" C="1149575.9" Error="0.0324"/>
<QuasiParabolic ID="8" StartDistance="6591.0" EndDistance="6605.0" A="1.35574191E14" B="-4.118811E10" C="3128297.2" Error="0.0054"/>
<QuasiParabolic ID="9" StartDistance="6605.0" EndDistance="6607.0" A="-3.40233686E14" B="1.02886949E11" C="-7778217.5" Error="4.63E-4"/>
<QuasiParabolic ID="10" StartDistance="6607.0" EndDistance="6608.537" A="-1.49049928E15" B="4.51082977E11" C="-3.4128756E7" Error="3.82E-4"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="80.5" Depth="0.154"/>
<TopsideChapman PeakHeight="238.537" PeakDensity="629846.44" PeakScaleHeight="10.583" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
