<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-22 -112 22:30:00.000"
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="20.0">
<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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 65% PACIFIC flags: One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.22 (112) 22:30:00</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">
FF202611204222230001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="28" >
<URSI ID="00" Val="3.375" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.633" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="12.262" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.100" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="2.425" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.125" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.725" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="210.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="210.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="34" Val="100.000" 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="0.075" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="261.206" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.125" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.125" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="238.842" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="208.653" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.089" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="2.100" Description="Minimum frequency of Es-layer" Units="MHz" />
<URSI ID="94" Val="42.762" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.364" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="23.451" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="33.730" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="4.850" Name="B1" QL="/" DL="/" />
<URSI ID="32" Val="2.125" Name="fbEs" Units="MHz" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="51">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
210.000 210.833 211.667 212.500 212.500 212.500 213.125 213.750 214.375 215.000 215.625 216.250 216.875 217.500 217.500 219.167 220.833 222.500 222.500 225.000 225.000 227.500 227.500 227.500 230.000 232.500 233.762 235.100 236.523 238.038 239.655 241.384 243.238 245.230 247.376 249.696 252.210 254.946 257.932 261.206 264.810 268.798 273.234 278.199 283.792 290.141 297.412 305.819 315.652 327.307 341.342
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
42 0 0 72 54 54 0 0 0 0 0 0 0 69 66 0 0 57 63 60 63 60 63 60 51 57 57 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-3.125 -3.125 3.125 3.125 -3.125 3.125 3.125 -3.125 -9.375 3.125 -3.125 -3.125 3.125 3.125 3.125 3.125 -3.125 3.125 3.125 -3.125 3.125 -3.125 -3.125 3.125 3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 3.125 3.125 -3.125 -3.125 -3.125 -3.125 9.375 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -9.375 -3.125 -3.125
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="Es" Polarization="O" Num="14">
<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 2.425
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
100.000 105.000 104.167 103.333 102.500 102.500 102.500 102.143 101.786 101.429 101.071 100.714 100.357 100.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
48 42 0 0 63 45 45 0 0 0 0 0 0 69
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-3.125 -3.125 -3.125 -3.125 -3.125 3.125 3.125 -3.125 -3.125 -3.125 -3.125 -3.125 -3.125 3.125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="503">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 133.33333 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 156.66667 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 238.842 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0
</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 0.3538169 0.35312194 0.35206616 0.35058403 0.34861574 0.3462502 0.3433677 0.34006724 0.336247 0.33195284 0.32717335 0.32179055 0.31589526 0.3093662 0.30218917 0.2942784 0.28568256 0.27623004 0.26589635 0.25450236 0.24202472 0.22809964 0.21270788 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.204 0.20614286 0.21257143 0.219 0.22542857 0.23185714 0.23828572 0.24471429 0.25114286 0.25757143 0.264 0.27042857 0.27685714 0.2832857 0.28971428 0.29614285 0.30257142 0.309 0.31542858 0.32185715 0.32828572 0.3347143 0.34114286 0.34757143 0.354 0.39492244 0.432602 0.46884543 0.50457036 0.54035443 0.57662225 0.61371243 0.65193313 0.6915829 0.73296875 0.7764174 0.8223038 0.871051 0.92314655 0.9791715 1.0398295 1.1059711 1.1786094 1.2589431 1.3483175 1.4480498 1.5590752 1.6811187 1.811799 1.946232 2.0783477 2.2030349 2.317592 2.4212902 2.5146441 2.5986764 2.6744893 2.7431016 2.8054178 2.862197 2.914083 2.961605 3.0052054 3.045268 3.0820973 3.1159658 3.147104 3.1757023 3.2019312 3.2259338 3.2478333 3.267742 3.285748 3.3019354 3.3163753 3.3291242 3.3402348 3.3497515 3.3577125 3.3641436 3.3690715 3.372513 3.374481 3.375 3.374985 3.3742046 3.372263 3.3691924 3.3650258 3.359796 3.3535361 3.3462791 3.338058 3.3289056 3.3188548 3.307938 3.2961876 3.2836351 3.2703125 3.2562509 3.2414808 3.226033 3.2099369 3.193222 3.1759171 3.1580505 3.13965 3.1207426 3.1013546 3.0815122 3.0612407 3.0405645 3.019508 2.9980946 2.9763467 2.9542873 2.9319372 2.9093175 2.8864489 2.8633506 2.8400419 2.8165414 2.792867 2.7690356 2.7450643 2.720969 2.6967654 2.6724687 2.648093 2.6236522 2.5991602 2.5746293 2.5500724 2.5255013 2.500927 2.4763608 2.4518135 2.4272945 2.4028137 2.3783805 2.3540034 2.329691 2.3054512 2.2812915 2.2572193 2.2332416 2.209365 2.1855953 2.1619387 2.1384008 2.114987 2.091702 2.0685508 2.0455377 2.0226667 1.9999421 1.9773673 1.9549459 1.9326811 1.9105757 1.8886327 1.8668547 1.8452438 1.8238025 1.8025327 1.7814362 1.7605147 1.7397698 1.7192028 1.6988147 1.6786069 1.6585802 1.6387354 1.6190732 1.599594 1.5802984 1.5611868 1.5422593 1.5235162 1.5049573 1.4865828 1.4683923 1.4503857 1.4325628 1.4149232 1.3974663 1.3801917 1.3630989 1.3461871 1.3294559 1.3129041 1.2965313 1.2803366 1.264319 1.2484776 1.2328115 1.2173195 1.2020007 1.1868541 1.1718786 1.1570728 1.1424357 1.1279662 1.113663 1.0995247 1.0855504 1.0717386 1.058088 1.0445974 1.0312653 1.0180905 1.0050718 0.9922075 0.97949654 0.96693736 0.9545287 0.9422691 0.9301572 0.9181916 0.90637094 0.8946938 0.88315874 0.8717644 0.86050946 0.84939235 0.83841175 0.8275663 0.8168546 0.8062752 0.79582673 0.7855079 0.77531725 0.7652534 0.755315 0.74550074 0.7358092 0.7262391 0.716789 0.70745766 0.6982437 0.68914586 0.6801628 0.67129314 0.6625357 0.65388924 0.64535236 0.63692385 0.62860245 0.62038696 0.6122761 0.60426855 0.5963633 0.58855903 0.58085454 0.5732486 0.56574017 0.55832803 0.55101097 0.5437879 0.5366577 0.52961916 0.5226713 0.51581293 0.50904304 0.5023604 0.4957641 0.48925304 0.4828261 0.47648236 0.4702207 0.46404016 0.4579397 0.45191836 0.44597512 0.44010904 0.43431917 0.4286045 0.42296416 0.41739717 0.4119026 0.4064796 0.40112722 0.39584458 0.3906308 0.38548502 0.38040638 0.37539402 0.3704471 0.3655648 0.3607463 0.35599074 0.35129738 0.3466654 0.34209403 0.3375825 0.33313 0.32873583 0.3243992 0.3201194 0.31589568 0.31172734 0.30761367 0.30355394 0.29954746 0.2955936 0.29169157 0.2878408 0.2840406 0.2802903 0.2765893 0.2729369 0.2693325 0.26577547 0.26226524 0.25880113 0.2553826 0.25200903 0.24867983 0.24539445 0.2421523 0.23895283 0.23579548 0.2326797 0.22960494 0.22657068 0.22357638 0.22062154 0.21770562 0.21482812 0.21198855 0.20918639 0.20642118 0.20369242 0.20099963 0.19834235 0.19572012 0.19313248 0.19057895 0.1880591 0.1855725 0.18311872 0.1806973 0.17830785 0.17594992 0.1736231 0.171327 0.16906121 0.16682532 0.16461897 0.16244173 0.16029325 0.15817313 0.156081 0.15401652 0.1519793 0.14996898 0.1479852 0.14602765 0.14409596 0.14218977 0.14030877 0.13845262 0.136621 0.13481359 0.13303004 0.13127008 0.12953338 0.12781961 0.12612851 0.12445976 0.12281306 0.12118813 0.11958467 0.118002415 0.11644108 0.11490037 0.113380045 0.11187982 0.11039942 0.1089386 0.10749709 0.106074646 0.10467101 0.10328593 0.10191917 0.10057048 0.09923963 0.09792638 0.09663049 0.09535175 0.09408992 0.09284477 0.091616094 0.090403676 0.089207284 0.088026725 0.086861774 0.08571224 0.0845779 0.08345858 0.08235406 0.08126415 0.08018866 0.0791274 0.07808018 0.07704681 0.07602711 0.0750209 0.07402801 0.07304825 0.072081454 0.07112745 0.07018607 0.06925714 0.06834051 0.067436 0.06654346 0.06566273 0.064793654 0.06393608 0.06308985 0.062254816 0.061430834 0.060617756 0.059815433 0.05902373 0.058242504 0.057471618 0.05671093 0.05596031 0.05521962 0.054488733 0.05376752 0.05305585 0.0523536 0.05166064 0.050976854 0.050302114

</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="3.375" PeakHeight="238.842" Num="5" zHalfNm="208.653" Error="1.765">
-69.355 17.187 -10.477 4.365 -0.562
</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="6503.333" A="-2.72938779E11" B="8.424036E7" C="-6499.9023" Error="0.00135"/>
<QuasiParabolic ID="2" StartDistance="6503.333" EndDistance="6526.667" A="0.0" B="-1701.97" C="0.3033505" Error="0.0231"/>
<QuasiParabolic ID="3" StartDistance="6526.667" EndDistance="6545.0" A="1.22520764E11" B="-3.76343E7" C="2890.027" Error="0.0237"/>
<QuasiParabolic ID="4" StartDistance="6545.0" EndDistance="6547.0" A="-8.9440145E11" B="2.73113504E8" C="-20849.3" Error="9.04E-4"/>
<QuasiParabolic ID="5" StartDistance="6547.0" EndDistance="6563.0" A="4.39344955E12" B="-1.34223731E9" C="102516.43" Error="0.0389"/>
<QuasiParabolic ID="6" StartDistance="6563.0" EndDistance="6567.0" A="1.61039631E13" B="-4.9108838E9" C="374392.6" Error="0.00587"/>
<QuasiParabolic ID="7" StartDistance="6567.0" EndDistance="6578.0" A="3.7956056E13" B="-1.15660063E10" C="881102.06" Error="0.0298"/>
<QuasiParabolic ID="8" StartDistance="6578.0" EndDistance="6585.0" A="-4.4498575E13" B="1.35038116E10" C="-1024478.5" Error="0.0197"/>
<QuasiParabolic ID="9" StartDistance="6585.0" EndDistance="6608.842" A="-1.03320262E13" B="3.12672794E9" C="-236545.03" Error="0.0119"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="70.0" Depth="0.15"/>
<TopsideChapman PeakHeight="238.842" PeakDensity="141322.89" PeakScaleHeight="23.451" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
