<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-15 -105 04:10:00.000"
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: 50% PACIFIC flags: F2o cusp not found, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.15 (105) 04:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.19" 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">
FF202610504150410001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.175" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.603" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.439" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.875" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.875" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.450" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="266.341" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="266.341" 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="0.125" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.000" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="277.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.875" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.875" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="265.148" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="245.282" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.425" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="28.434" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.824" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="15.499" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="25.320" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.360" 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" >
2.875 2.9 2.925 2.95 2.975 3.0 3.025 3.05 3.075 3.1 3.125 3.15 3.175
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
266.341 267.898 269.717 271.870 275.000 277.500 282.500 287.500 292.500 302.500 317.500 342.500 393.088
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 72 0 81 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 -7.8125 -1.5625 -1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="407">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 146.47966 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 182.95934 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 219.439 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 265.148 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0
</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 0.35179353 0.3507929 0.34957802 0.34822688 0.34674317 0.3449877 0.34304082 0.3409804 0.3386055 0.33613524 0.33337665 0.33047858 0.32729307 0.32390562 0.32030582 0.31645814 0.3123355 0.30797482 0.3033089 0.29839063 0.29315403 0.2876503 0.28178698 0.27551717 0.2689168 0.26188377 0.25442025 0.24647512 0.23798795 0.22889905 0.21916255 0.20879531 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 0.20017168 0.20439321 0.20861474 0.21283627 0.2170578 0.22127932 0.22550085 0.22972238 0.23394391 0.23816544 0.24238697 0.24660851 0.25083002 0.25505155 0.25927308 0.2634946 0.26771614 0.27193767 0.2761592 0.28038076 0.28460228 0.2888238 0.29304534 0.29726687 0.3014884 0.30570993 0.30993146 0.314153 0.3183745 0.32259604 0.32681757 0.3310391 0.33526063 0.33948216 0.3437037 0.34792522 0.35214674 0.354 0.3679735 0.39747927 0.43393806 0.4778337 0.52813596 0.5827405 0.63973886 0.69801784 0.75722486 0.81740546 0.87882215 0.941836 1.0068518 1.0743088 1.1446993 1.218509 1.2963077 1.3786237 1.4660085 1.5589083 1.6576207 1.7620655 1.8716317 1.9849129 2.0997884 2.213534 2.3234038 2.4271505 2.5232792 2.6111286 2.690638 2.762107 2.8260293 2.8829842 2.9335308 2.97818 3.0174022 3.0515978 3.0811076 3.1062198 3.127172 3.1441557 3.1573281 3.1668038 3.1726642 3.1749613 3.175 3.174074 3.170684 3.1649086 3.1568546 3.1466298 3.1343415 3.1200967 3.1040013 3.08616 3.0666757 3.0456493 3.0231793 2.9993627 2.9742928 2.948061 2.9207551 2.8924608 2.8632605 2.8332329 2.8024545 2.7709985 2.7389348 2.7063298 2.6732483 2.6397502 2.6058943 2.571735 2.5373247 2.5027127 2.4679458 2.4330683 2.3981214 2.3631446 2.3281746 2.2932458 2.2583904 2.223639 2.1890194 2.1545582 2.1202796 2.086206 2.0523586 2.0187569 1.9854184 1.9523597 1.9195955 1.8871397 1.8550045 1.8232013 1.7917402 1.7606301 1.7298791 1.6994946 1.6694826 1.6398486 1.6105971 1.5817323 1.553257 1.5251741 1.4974855 1.4701926 1.4432962 1.4167967 1.3906941 1.3649879 1.3396771 1.3147606 1.2902366 1.2661034 1.2423586 1.2189999 1.1960245 1.1734295 1.1512117 1.129368 1.1078947 1.086788 1.0660446 1.0456601 1.0256307 1.0059524 0.9866208 0.9676317 0.94898075 0.9306636 0.9126757 0.8950127 0.87767 0.8606431 0.84392744 0.8275185 0.8114117 0.79560244 0.7800862 0.7648584 0.74991465 0.7352503 0.72086084 0.7067419 0.6928891 0.679298 0.6659641 0.6528833 0.6400511 0.62746346 0.61511606 0.60300475 0.5911254 0.5794741 0.5680466 0.55683917 0.5458477 0.53506845 0.52449757 0.51413125 0.50396585 0.49399766 0.4842231 0.4746386 0.46524072 0.45602596 0.4469909 0.43813226 0.4294467 0.420931 0.412582 0.40439653 0.3963715 0.38850394 0.38079083 0.3732292 0.36581624 0.35854906 0.3514249 0.34444106 0.33759478 0.33088344 0.3243045 0.31785536 0.31153354 0.30533656 0.29926202 0.29330754 0.28747082 0.28174955 0.2761415 0.27064446 0.26525626 0.25997478 0.25479794 0.24972372 0.2447501 0.23987511 0.23509681 0.23041332 0.22582278 0.22132336 0.21691327 0.21259075 0.2083541 0.20420161 0.20013162 0.19614254 0.19223274 0.18840067 0.1846448 0.18096362 0.17735565 0.17381945 0.17035362 0.16695674 0.16362746 0.16036445 0.15716638 0.15403198 0.15095998 0.14794914 0.14499827 0.14210616 0.13927166 0.13649361 0.1337709 0.13110244 0.12848714 0.12592395 0.12341183 0.120949775 0.118536785 0.11617189 0.113854125 0.11158256 0.10935628 0.10717438 0.105035976 0.1029402 0.10088622 0.09887318 0.09690029 0.09496674 0.093071744 0.09121454 0.08939437 0.087610506 0.08586221 0.084148794 0.082469545 0.080823794 0.07921087 0.07763012 0.076080896 0.07456258 0.07307456 0.07161621 0.070186965 0.068786226 0.067413434 0.06606803 0.06474947 0.06345722 0.062190752 0.060949553 0.05973312 0.058540955 0.05737258 0.056227516 0.055105302 0.05400548 0.052927606 0.05187124 0.050835952

</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="3.175" PeakHeight="265.148" Num="5" zHalfNm="245.282" Error="2.289">
-48.975 6.074 -4.229 2.431 -1.01
</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="6516.48" A="-1.14266653E11" B="3.5267484E7" C="-2721.131" Error="0.00175"/>
<QuasiParabolic ID="2" StartDistance="6516.48" EndDistance="6552.959" A="0.0" B="-1389.2208" C="0.25322065" Error="0.0305"/>
<QuasiParabolic ID="3" StartDistance="6552.959" EndDistance="6589.0" A="4.911503E10" B="-1.5048365E7" C="1152.6919" Error="0.0305"/>
<QuasiParabolic ID="4" StartDistance="6589.0" EndDistance="6590.0" A="1.37323463E13" B="-4.16840448E9" C="316326.2" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6590.0" EndDistance="6604.0" A="8.9376288E12" B="-2.71325466E9" C="205920.28" Error="0.0162"/>
<QuasiParabolic ID="6" StartDistance="6604.0" EndDistance="6615.0" A="3.14711359E13" B="-9.5374541E9" C="722591.94" Error="0.0187"/>
<QuasiParabolic ID="7" StartDistance="6615.0" EndDistance="6635.148" A="-2.43679961E13" B="7.3451254E9" C="-553491.1" Error="0.0112"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="109.439" Depth="0.154"/>
<TopsideChapman PeakHeight="265.148" PeakDensity="125069.79" PeakScaleHeight="15.499" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
