<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-20 -110 06:05:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 70% PACIFIC flags: F2 cusps do not match</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.20 (110) 06:05:00</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">
FF202611004200605001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.400" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.447" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="8.273" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.100" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="2.850" Name="fxI" 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="0.025" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.300" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="308.695" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.100" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.100" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="271.661" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="249.340" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.304" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="31.721" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.529" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="16.864" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="31.900" 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="13">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
280.000 282.500 284.528 286.891 289.680 293.022 297.098 302.180 308.695 317.346 329.389 347.309 376.794
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 78 0 72 0 54 0 45 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="419">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 146.291 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 182.582 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 218.873 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 271.661 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0
</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 0.35257575 0.35171902 0.35071892 0.34957823 0.34822705 0.34667096 0.34491634 0.34297046 0.34084123 0.33846867 0.33593324 0.33317873 0.33021992 0.32700893 0.32356703 0.31991675 0.31602296 0.31185907 0.30746225 0.30276603 0.29777324 0.292474 0.286875 0.28089386 0.27461353 0.26787353 0.26074815 0.2531843 0.24505602 0.23647602 0.22725014 0.21732406 0.20680106 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 0.20177378 0.20601726 0.21026072 0.2145042 0.21874768 0.22299115 0.22723463 0.23147811 0.23572159 0.23996507 0.24420853 0.24845201 0.2526955 0.25693896 0.26118243 0.26542592 0.26966938 0.27391288 0.27815634 0.28239983 0.2866433 0.2908868 0.29513025 0.29937372 0.3036172 0.30786067 0.31210417 0.31634763 0.32059112 0.3248346 0.32907808 0.33332154 0.337565 0.3418085 0.34605196 0.35029545 0.354 0.35727414 0.3835968 0.41094175 0.43938786 0.4689791 0.4997848 0.53185326 0.56523335 0.5999768 0.6361223 0.67369515 0.712733 0.7532502 0.79525065 0.83875096 0.88371646 0.9301286 0.97794604 1.0271156 1.0775597 1.1291872 1.1818727 1.2355152 1.2899584 1.3450403 1.4005926 1.4564219 1.5123432 1.5681332 1.6236029 1.678525 1.7326884 1.7858812 1.8378979 1.8885366 1.9376179 1.9849454 2.0303547 2.0736837 2.114782 2.1535068 2.1897497 2.2233841 2.2543113 2.282446 2.3077018 2.3300157 2.349321 2.3655694 2.3787227 2.3887444 2.3956108 2.3993046 2.4 2.3999057 2.398547 2.3956227 2.3911958 2.3853288 2.378085 2.3695273 2.359719 2.3487217 2.3365974 2.3234062 2.3092082 2.2940617 2.2780237 2.2611506 2.2434964 2.2251143 2.2060556 2.1863704 2.1661067 2.1453109 2.1240284 2.102302 2.0801735 2.0576828 2.034868 2.0117657 1.9884113 1.9648379 1.9410776 1.9171605 1.8931158 1.8689708 1.8447515 1.8204825 1.7961872 1.7718877 1.7476046 1.7233577 1.6991653 1.6750449 1.6510124 1.6270833 1.6032717 1.5795909 1.5560532 1.53267 1.5094521 1.4864092 1.4635506 1.4408845 1.4184185 1.3961599 1.3741149 1.3522892 1.3306884 1.3093168 1.2881788 1.2672781 1.2466179 1.2262013 1.2060304 1.1861075 1.1664342 1.1470119 1.1278416 1.108924 1.0902598 1.0718489 1.0536915 1.0357871 1.0181354 1.0007358 0.98358715 0.9666885 0.95003873 0.9336364 0.9174801 0.9015681 0.88589865 0.87047 0.8552801 0.84032696 0.8256085 0.81112236 0.7968664 0.7828382 0.7690355 0.75545573 0.7420965 0.7289552 0.71602935 0.70331633 0.69081354 0.67851835 0.66642815 0.6545402 0.6428519 0.6313606 0.62006354 0.60895807 0.59804153 0.5873113 0.57676464 0.566399 0.55621153 0.5461998 0.53636116 0.5266929 0.51719254 0.5078575 0.49868518 0.4896731 0.48081875 0.47211966 0.46357334 0.45517737 0.44692937 0.43882692 0.43086767 0.4230493 0.41536948 0.40782598 0.40041652 0.3931389 0.38599086 0.3789703 0.37207508 0.36530307 0.3586522 0.35212043 0.34570572 0.33940604 0.3332195 0.32714412 0.32117796 0.31531918 0.30956593 0.30391636 0.29836866 0.2929211 0.2875719 0.28231937 0.27716178 0.27209753 0.2671249 0.26224235 0.25744823 0.25274104 0.24811922 0.24358125 0.23912565 0.23475097 0.23045576 0.22623861 0.22209813 0.21803294 0.21404172 0.21012315 0.20627591 0.20249872 0.19879036 0.19514956 0.19157511 0.18806584 0.18462056 0.18123813 0.1779174 0.17465729 0.17145666 0.16831449 0.1652297 0.16220124 0.1592281 0.15630929 0.15344383 0.15063073 0.14786905 0.14515787 0.14249627 0.13988335 0.13731822 0.13480003 0.1323279 0.129901 0.12751853 0.12517966 0.12288362 0.120629594 0.118416846 0.116244614 0.11411215 0.11201876 0.1099637 0.10794629 0.10596584 0.10402167 0.10211312 0.10023954 0.098400295 0.09659476 0.09482231 0.093082346 0.09137428 0.089697525 0.088051505 0.08643566 0.08484944 0.083292305 0.08176372 0.08026317 0.07879013 0.077344105 0.0759246 0.07453112 0.073163204 0.07182038 0.070502184 0.06920817 0.06793788 0.06669091 0.0654668 0.064265154 0.06308555 0.061927587 0.06079087 0.059675008 0.05857962 0.05750433 0.05644877 0.055412576 0.0543954 0.053396884 0.052416693 0.05145449 0.05050994

</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="2.4" PeakHeight="271.661" Num="5" zHalfNm="249.34" Error="1.15">
-52.664 0.208 -0.577 0.257 -0.012
</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="6516.291" A="-1.15453698E11" B="3.5633856E7" C="-2749.4006" Error="0.00174"/>
<QuasiParabolic ID="2" StartDistance="6516.291" EndDistance="6552.582" A="0.0" B="1489.5448" C="-0.1885533" Error="0.0308"/>
<QuasiParabolic ID="3" StartDistance="6552.582" EndDistance="6586.0" A="1.74000599E10" B="-5398238.5" C="418.62" Error="0.0308"/>
<QuasiParabolic ID="4" StartDistance="6586.0" EndDistance="6587.0" A="-1.06846473E12" B="3.24351168E8" C="-24615.498" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6587.0" EndDistance="6594.0" A="4.5991356E12" B="-1.39649306E9" C="106008.77" Error="0.0315"/>
<QuasiParabolic ID="6" StartDistance="6594.0" EndDistance="6597.0" A="1.16718987E12" B="-3.55563168E8" C="27078.7" Error="0.00929"/>
<QuasiParabolic ID="7" StartDistance="6597.0" EndDistance="6626.0" A="5.8580329E12" B="-1.77767718E9" C="134863.61" Error="0.0388"/>
<QuasiParabolic ID="8" StartDistance="6626.0" EndDistance="6641.661" A="-1.33213014E13" B="4.01143654E9" C="-301984.72" Error="0.012"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="108.873" Depth="0.154"/>
<TopsideChapman PeakHeight="271.661" PeakDensity="71464.02" PeakScaleHeight="16.864" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
