<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-15 -074 06:30:00.000"
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" >
2026.03.15 (074) 06:30:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.17" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.96" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="82.25368" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202607403150630001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="27" >
<URSI ID="00" Val="4.550" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.574" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="16.261" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="3.475" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.550" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="245.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="245.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="34" Val="97.500" Name="h`Es" 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="4.500" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="304.794" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.550" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.550" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="259.717" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="239.791" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.399" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="2.000" Description="Minimum frequency of Es-layer" Units="MHz" />
<URSI ID="94" Val="28.857" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.638" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="14.834" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="29.170" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.920" Name="B1" QL="/" DL="/" />
<URSI ID="32" Val="2.550" Name="fbEs" Units="MHz" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="81">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
245.000 245.000 247.500 247.500 247.500 247.500 247.500 247.500 250.000 250.000 250.000 251.250 252.500 252.500 252.500 251.250 250.000 252.500 252.500 252.500 252.500 252.500 252.500 255.000 255.000 257.500 257.500 257.500 255.000 257.500 257.500 257.500 262.500 262.500 262.500 262.500 262.500 262.500 262.500 262.500 262.500 262.500 262.500 265.000 265.000 265.000 267.500 267.500 267.500 267.500 267.500 267.500 267.500 270.000 272.500 272.500 272.500 272.500 272.500 275.000 275.000 280.000 280.000 280.000 282.500 282.500 285.000 287.500 290.000 292.500 295.000 300.000 295.000 297.500 300.000 300.611 301.461 302.723 304.794 308.818 320.018
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 51 0 0 0 0 0 63 60 48 48 30 39 63 54 51 60 78 81 90 93 93 93 108 111 96 96 93 93 102 114 114 102 72 72 111 114 87 81 87 90 93 87 87 84 84 90 78 87 84 81 96 99 105 105 111 108 93 96 90 99 87 93 105 108 96 93 93 96 93 87 81 84 72 72 51 57 75 81 78 66
</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
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="Es" Polarization="O" Num="60">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
100.000 100.000 100.000 100.000 100.000 105.000 100.000 100.000 100.000 100.000 100.000 100.000 100.000 100.000 100.000 100.000 100.000 102.500 97.500 102.500 101.250 100.000 102.500 101.250 100.000 100.000 100.000 102.500 102.500 102.500 103.750 105.000 105.000 105.000 105.000 105.000 105.000 105.000 102.500 102.500 102.500 102.500 102.500 102.500 101.250 100.000 100.000 100.000 100.000 100.000 100.000 102.500 102.500 102.500 102.500 102.500 102.500 102.500 102.500 102.500
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 63 60 63 66 0 75 66 66 48 0 54 54 54 60 69 69 66 63 63 66 72 63 0 75 72 75 57 63 72 0 0 54 0 0 0 0 51 63 78 84 99 87 90 0 96 102 81 93 93 93 102 102 0 0 63 72 108 0 84
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="408">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 141.5 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 204.5 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 259.717 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0
</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 0.3442354 0.34187606 0.33927825 0.33638793 0.33322465 0.32980946 0.32603815 0.32200715 0.31768805 0.31300464 0.30795586 0.3025528 0.29676917 0.29057935 0.28398937 0.27689454 0.26927269 0.26112098 0.25231692 0.24289067 0.23271252 0.2217551 0.20985778 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 0.2048889 0.20977777 0.21466666 0.21955556 0.22444445 0.22933333 0.23422222 0.23911111 0.244 0.2488889 0.25377777 0.25866666 0.26355556 0.26844445 0.27333334 0.27822223 0.28311113 0.288 0.29288888 0.29777777 0.30266666 0.30755556 0.31244445 0.31733334 0.32222223 0.32711112 0.332 0.33688888 0.34177777 0.34666666 0.35155556 0.354 0.37428018 0.414095 0.45424804 0.49569085 0.53904194 0.5847754 0.6333 0.6849511 0.7400494 0.7988387 0.8615002 0.9281663 0.9988914 1.0736405 1.1523062 1.2346745 1.3205221 1.4095303 1.5013925 1.5957776 1.6923344 1.7907934 1.8908281 1.992166 2.0945792 2.1978564 2.3017964 2.406186 2.5108972 2.6157367 2.7205575 2.825211 2.92951 3.0333128 3.136414 3.238654 3.3397822 3.439575 3.537781 3.6340973 3.7282088 3.819735 3.908288 3.9934175 4.074642 4.151427 4.2232156 4.289434 4.349447 4.4026575 4.448459 4.4863076 4.515697 4.536226 4.5475903 4.55 4.549839 4.5467362 4.5398164 4.5292535 4.515223 4.4979014 4.4774632 4.454083 4.427932 4.399178 4.367988 4.3345237 4.2989426 4.2613983 4.2220397 4.1810107 4.1384506 4.094493 4.0492663 4.002894 3.9554944 3.90718 3.8580587 3.8082323 3.7577984 3.7068496 3.655473 3.603751 3.5517619 3.4995792 3.447272 3.394905 3.3425393 3.290232 3.2380354 3.186 3.1341715 3.0825927 3.0313034 2.9803402 2.9297366 2.8795242 2.829731 2.780383 2.7315044 2.6831162 2.6352382 2.5878875 2.54108 2.4948297 2.4491482 2.4040468 2.3595345 2.3156192 2.2723076 2.2296052 2.1875162 2.1460438 2.1051903 2.0649571 2.025345 1.9863539 1.9479825 1.9102294 1.8730924 1.8365688 1.8006552 1.7653478 1.7306427 1.6965349 1.6630195 1.6300915 1.5977451 1.5659744 1.5347732 1.5041354 1.4740542 1.4445231 1.4155353 1.3870836 1.3591611 1.3317605 1.3048747 1.278496 1.2526175 1.2272315 1.2023306 1.1779073 1.1539544 1.1304641 1.1074291 1.0848421 1.0626956 1.0409824 1.0196949 0.998826 0.97836864 0.95831555 0.9386596 0.91939384 0.9005113 0.88200516 0.86386853 0.8460948 0.82867724 0.8116094 0.7948847 0.77849674 0.7624393 0.7467062 0.73129123 0.7161884 0.7013917 0.6868954 0.6726936 0.6587807 0.64515114 0.63179934 0.61871994 0.6059076 0.5933572 0.58106345 0.56902134 0.557226 0.5456725 0.53435594 0.52327174 0.51241523 0.5017819 0.49136722 0.4811669 0.4711766 0.46139207 0.45180923 0.44242397 0.43323237 0.42423043 0.41541436 0.4067804 0.39832482 0.39004406 0.3819345 0.3739927 0.36621523 0.35859874 0.35113993 0.3438356 0.3366826 0.3296778 0.32281816 0.31610075 0.30952263 0.30308095 0.2967729 0.29059574 0.28454676 0.27862334 0.27282292 0.2671429 0.26158085 0.25613436 0.25080097 0.24557842 0.24046439 0.23545663 0.23055296 0.22575124 0.22104932 0.2164452 0.21193679 0.20752214 0.20319933 0.19896641 0.19482157 0.19076295 0.18678878 0.1828973 0.17908679 0.1753556 0.17170204 0.16812454 0.1646215 0.16119139 0.15783268 0.15454389 0.15132357 0.1481703 0.1450827 0.14205939 0.13909903 0.13620032 0.13336198 0.13058275 0.12786141 0.12519674 0.12258758 0.120032765 0.117531165 0.11508168 0.11268322 0.11033473 0.10803516 0.1057835 0.10357875 0.10141993 0.09930609 0.0972363 0.09520963 0.09322519 0.09128209 0.08937949 0.08751653 0.08569239 0.08390626 0.08215736 0.080444895 0.07876811 0.07712628 0.07551866 0.07394455 0.07240323 0.07089404 0.06941631 0.06796937 0.06655258 0.065165326 0.06380698 0.062476944 0.061174627 0.059899457 0.058650862 0.057428293 0.056231204 0.055059064 0.053911358 0.05278757 0.051687207 0.05060978

</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="4.55" PeakHeight="259.717" Num="5" zHalfNm="239.791" Error="0.713">
-54.47 -1.789 1.549 -0.932 0.425
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="8" 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="6511.5" A="-1.53036653E11" B="4.7233536E7" C="-3644.4375" Error="0.00157"/>
<QuasiParabolic ID="2" StartDistance="6511.5" EndDistance="6543.0" A="0.0" B="33.48672" C="0.034882057" Error="6.19E-4"/>
<QuasiParabolic ID="3" StartDistance="6543.0" EndDistance="6544.0" A="-7.7588537E12" B="2.37124352E9" C="-181173.48" Error="0.0"/>
<QuasiParabolic ID="4" StartDistance="6544.0" EndDistance="6573.0" A="9.8830246E10" B="-3.0249124E7" C="2314.6392" Error="0.0783"/>
<QuasiParabolic ID="5" StartDistance="6573.0" EndDistance="6582.0" A="6.6762577E12" B="-2.03159629E9" C="154554.66" Error="0.0645"/>
<QuasiParabolic ID="6" StartDistance="6582.0" EndDistance="6619.0" A="1.87208565E13" B="-5.6914565E9" C="432575.03" Error="0.0694"/>
<QuasiParabolic ID="7" StartDistance="6619.0" EndDistance="6629.717" A="-7.1151846E13" B="2.14645187E10" C="-1618790.4" Error="0.00867"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="94.5" Depth="0.154"/>
<TopsideChapman PeakHeight="259.717" PeakDensity="256854.84" PeakScaleHeight="14.834" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
