<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-04 -124 06:10:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 80% PACIFIC flags: Unidentified traces above foF2</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.04 (124) 06:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.21" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.99" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="75.82641" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202612405040610001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.350" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.536" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.846" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.975" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.975" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.625" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="260.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="260.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.075" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="272.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.975" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.975" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="273.973" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="247.708" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.645" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="37.523" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.202" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="20.602" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="31.800" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.880" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="16">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
260.000 262.500 267.500 270.000 272.500 277.500 285.000 287.500 297.500 302.500 313.320 326.520 342.984 364.091 392.131 431.187
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 69 90 93 93 93 90 93 90 93 90 87 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="493">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 273.973 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0
</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 0.35313663 0.3524263 0.35157037 0.35049725 0.34921128 0.34779054 0.3460947 0.34420434 0.34212717 0.33980232 0.33724248 0.33452845 0.33153966 0.32836035 0.32488185 0.3211927 0.3171983 0.31299222 0.3084957 0.30364835 0.2985621 0.29312387 0.2873491 0.2811647 0.27462557 0.26766586 0.26023185 0.25232056 0.24386445 0.23482597 0.2251332 0.21472648 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 0.2044 0.2088 0.2132 0.2176 0.222 0.2264 0.2308 0.2352 0.2396 0.244 0.2484 0.2528 0.2572 0.2616 0.266 0.2704 0.2748 0.2792 0.2836 0.288 0.2924 0.2968 0.3012 0.3056 0.31 0.3144 0.3188 0.3232 0.3276 0.332 0.3364 0.3408 0.3452 0.3496 0.354 0.37443474 0.39874834 0.42756915 0.4611475 0.49910071 0.54044867 0.5840371 0.6289435 0.6746467 0.72091913 0.76775527 0.81524444 0.86356205 0.91291255 0.96351475 1.0156244 1.0695082 1.1254627 1.1838119 1.2449112 1.3091373 1.3769315 1.4487208 1.5249767 1.6061387 1.6925521 1.7843572 1.8813498 1.982799 2.087296 2.1928425 2.2970707 2.3977108 2.4929454 2.5817425 2.6636019 2.7385616 2.8069303 2.8691545 2.9257236 2.9771266 3.023821 3.066221 3.1046898 3.1395385 3.1710422 3.1994522 3.22496 3.2477448 3.2679632 3.2857409 3.301186 3.314395 3.3254411 3.3343885 3.3412852 3.3461702 3.3490696 3.35 3.3499994 3.3491955 3.3468986 3.3431559 3.3380158 3.3315268 3.3237367 3.314694 3.304447 3.2930434 3.280531 3.2669568 3.2523675 3.236809 3.2203267 3.2029648 3.1847672 3.1657772 3.1460366 3.1255865 3.1044672 3.0827174 3.060376 3.0374799 3.014065 2.990167 2.9658194 2.9410553 2.9159071 2.8904054 2.8645804 2.8384604 2.812074 2.7854476 2.758607 2.7315774 2.7043824 2.6770453 2.6495879 2.6220315 2.594396 2.5667012 2.5389655 2.5112064 2.4834409 2.4556854 2.427955 2.400264 2.372627 2.3450568 2.3175657 2.290166 2.2628686 2.2356844 2.2086234 2.181695 2.154908 2.1282709 2.1017916 2.0754774 2.0493355 2.023372 1.997593 1.9720044 1.946611 1.9214181 1.8964295 1.87165 1.8470829 1.8227316 1.7985995 1.7746893 1.7510035 1.7275444 1.7043141 1.6813142 1.6585463 1.6360117 1.6137116 1.5916467 1.5698179 1.5482255 1.52687 1.5057515 1.4848701 1.4642255 1.4438177 1.4236461 1.4037101 1.3840094 1.3645428 1.3453099 1.3263093 1.3075403 1.2890016 1.270692 1.2526102 1.2347548 1.2171245 1.1997176 1.1825328 1.1655682 1.1488224 1.1322936 1.11598 1.09988 1.0839916 1.068313 1.0528423 1.0375776 1.0225171 1.0076586 0.9930003 0.97854024 0.9642763 0.9502066 0.936329 0.9226415 0.9091421 0.89582866 0.88269925 0.8697518 0.8569842 0.84439445 0.83198047 0.81974024 0.8076717 0.79577285 0.78404164 0.7724761 0.7610741 0.7498338 0.7387531 0.72783 0.7170626 0.7064489 0.695987 0.68567497 0.67551076 0.66549265 0.65561867 0.6458869 0.63629556 0.62684274 0.61752665 0.6083455 0.5992974 0.5903807 0.5815936 0.57293427 0.56440103 0.55599225 0.54770607 0.539541 0.5314953 0.52356726 0.51575536 0.50805795 0.5004735 0.49300036 0.485637 0.47838193 0.4712336 0.4641905 0.45725122 0.4504142 0.44367805 0.43704134 0.43050268 0.4240606 0.41771382 0.41146094 0.40530062 0.39923152 0.39325237 0.38736185 0.3815587 0.37584165 0.37020946 0.36466092 0.35919484 0.35380998 0.34850517 0.3432793 0.33813116 0.33305967 0.3280637 0.32314214 0.3182939 0.3135179 0.30881312 0.30417854 0.29961306 0.2951157 0.29068547 0.28632137 0.28202245 0.27778774 0.2736163 0.2695072 0.2654595 0.26147234 0.2575448 0.25367597 0.24986504 0.24611111 0.24241337 0.23877098 0.2351831 0.23164895 0.22816773 0.22473863 0.2213609 0.21803379 0.21475652 0.21152838 0.2083486 0.2052165 0.20213135 0.19909246 0.19609913 0.19315071 0.19024651 0.18738587 0.18456814 0.18179269 0.1790589 0.17636612 0.17371376 0.17110121 0.16852787 0.16599317 0.16349652 0.16103737 0.15861513 0.15622927 0.15387924 0.15156451 0.14928454 0.14703882 0.14482683 0.14264809 0.14050207 0.13838829 0.13630627 0.13425554 0.13223563 0.13024609 0.12828642 0.12635623 0.12445504 0.12258243 0.12073796 0.11892123 0.1171318 0.11536928 0.11363325 0.11192333 0.11023912 0.10858023 0.10694628 0.105336905 0.103751734 0.1021904 0.10065254 0.09913781 0.097645864 0.096176356 0.09472895 0.093303315 0.09189912 0.090516046 0.08915378 0.08781201 0.08649041 0.0851887 0.08390657 0.082643725 0.08139988 0.08017475 0.078968056 0.07777951 0.076608844 0.07545579 0.07432009 0.07320148 0.07209969 0.071014486 0.06994561 0.068892814 0.067855865 0.06683452 0.06582853 0.064837694 0.06386176 0.06290051 0.06195373 0.061021194 0.060102694 0.059198014 0.058306947 0.057429295 0.056564845 0.055713408 0.05487478 0.05404878 0.053235207 0.05243388 0.051644612 0.050867222 0.05010153

</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="3.35" PeakHeight="273.973" Num="5" zHalfNm="247.708" Error="3.984">
-64.567 10.297 -7.202 3.994 -1.495
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="10" 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="6515.0" A="-1.24071371E11" B="3.8293632E7" C="-2954.6301" Error="0.00182"/>
<QuasiParabolic ID="2" StartDistance="6515.0" EndDistance="6550.0" A="0.0" B="-1838.262" C="0.322198" Error="0.0387"/>
<QuasiParabolic ID="3" StartDistance="6550.0" EndDistance="6566.0" A="1.04559845E11" B="-3.1970308E7" C="2443.854" Error="0.0387"/>
<QuasiParabolic ID="4" StartDistance="6566.0" EndDistance="6582.0" A="-1.29239122E10" B="3815180.5" C="-281.20587" Error="0.0118"/>
<QuasiParabolic ID="5" StartDistance="6582.0" EndDistance="6586.0" A="2.19406965E12" B="-6.6679974E8" C="50661.887" Error="0.025"/>
<QuasiParabolic ID="6" StartDistance="6586.0" EndDistance="6598.0" A="5.9222938E12" B="-1.79896614E9" C="136614.4" Error="0.0355"/>
<QuasiParabolic ID="7" StartDistance="6598.0" EndDistance="6607.0" A="8.8948406E12" B="-2.70001075E9" C="204896.05" Error="0.0197"/>
<QuasiParabolic ID="8" StartDistance="6607.0" EndDistance="6615.0" A="3.5660824E13" B="-1.08023224E10" C="818057.2" Error="0.02"/>
<QuasiParabolic ID="9" StartDistance="6615.0" EndDistance="6643.973" A="-1.55602125E13" B="4.6840084E9" C="-352489.34" Error="0.0267"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="105.0" Depth="0.154"/>
<TopsideChapman PeakHeight="273.973" PeakDensity="139236.97" PeakScaleHeight="20.602" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
