<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-18 -138 21:45:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 75% PACIFIC flags: Multiple candidates for F2x cusp, Unidentified traces above foF2</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.18 (138) 21:45:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.22" 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">
FF202613805182145001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.125" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.798" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="15.667" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.300" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.300" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.475" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="217.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="217.500" 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="0.075" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.875" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="251.100" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.412" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.300" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.300" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="238.129" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="213.789" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.728" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="34.668" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.684" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="19.291" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="26.800" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="4.910" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="34">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
217.500 218.125 218.750 219.375 220.000 222.500 222.500 222.500 225.000 227.500 227.500 227.500 230.000 232.500 232.500 233.784 235.196 236.755 238.486 240.420 242.593 245.054 247.863 251.100 254.872 259.321 264.649 271.146 279.241 289.609 303.363 322.485 350.879 397.450
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 51 48 75 78 78 78 51 57 69 66 57 57 51 54 69 75 48 42 45 45 57 60 63 54 45 48 69 72 48 48 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 -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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="454">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
92.509 93.0 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 135.08333 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 160.16667 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 185.25 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 238.129 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.21664661 0.24675922 0.27231082 0.29419693 0.3131501 0.32968745 0.34417403 0.3568707 0.3679763 0.3776347 0.3859565 0.3930285 0.3989177 0.40367424 0.4073366 0.40993357 0.4114844 0.412 0.41175464 0.41101944 0.40989628 0.40819675 0.40603027 0.40341145 0.4002641 0.39661375 0.39239937 0.38774925 0.38244158 0.37653992 0.3700331 0.36292785 0.3551015 0.34648213 0.33712143 0.3268679 0.31566584 0.30337477 0.2898884 0.27498126 0.25845486 0.23996414 0.21934417 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.211 0.21767774 0.22569104 0.23370431 0.2417176 0.2497309 0.2577442 0.26575747 0.27377075 0.28178406 0.28979734 0.29781064 0.30582392 0.3138372 0.3218505 0.3298638 0.33787706 0.34589037 0.35390365 0.36191693 0.36993024 0.37794352 0.38595682 0.3939701 0.40198338 0.4099967 0.412 0.431178 0.46187484 0.49967375 0.54521435 0.597598 0.65453696 0.71375394 0.77389944 0.83446735 0.8954845 0.9572181 1.0200193 1.084359 1.1506944 1.219565 1.2915847 1.367418 1.447891 1.5340016 1.62691 1.7281128 1.8393698 1.9627957 2.1005728 2.254345 2.423439 2.6027968 2.7823412 2.951157 3.1026518 3.2352812 3.3505554 3.450847 3.538521 3.6155894 3.6836653 3.7440712 3.7978253 3.8457515 3.8885062 3.9266348 3.9605594 3.9906392 4.017181 4.040411 4.060541 4.077732 4.0921164 4.1038036 4.112878 4.119405 4.1234293 4.1249795 4.125 4.1241865 4.121288 4.116357 4.109466 4.100688 4.0900946 4.077759 4.063752 4.048147 4.0310144 4.0124245 3.9924462 3.9711483 3.9485981 3.9248612 3.9000027 3.8740852 3.8471708 3.8193197 3.7905908 3.7610404 3.7307248 3.6996973 3.6680098 3.6357133 3.6028562 3.5694854 3.535647 3.501384 3.466739 3.4317522 3.396463 3.3609083 3.325124 3.2891448 3.253003 3.2167299 3.180356 3.1439095 3.1074176 3.0709064 3.0344005 2.9979231 2.9614968 2.9251425 2.88888 2.8527284 2.8167052 2.7808275 2.7451108 2.7095704 2.6742198 2.6390727 2.6041408 2.5694358 2.5349684 2.5007486 2.4667857 2.433088 2.399664 2.3665202 2.333664 2.301101 2.2688372 2.2368774 2.2052264 2.1738882 2.1428664 2.1121643 2.0817847 2.0517304 2.022003 1.9926043 1.9635358 1.9347987 1.9063936 1.8783213 1.8505818 1.8231752 1.7961012 1.7693595 1.7429492 1.7168698 1.69112 1.6656986 1.6406044 1.6158355 1.5913907 1.5672679 1.5434653 1.5199807 1.4968121 1.4739573 1.4514138 1.4291793 1.4072512 1.385627 1.3643041 1.3432797 1.322551 1.3021154 1.2819699 1.2621117 1.2425377 1.2232453 1.2042311 1.1854925 1.1670262 1.1488291 1.1308985 1.1132311 1.0958238 1.0786736 1.0617774 1.0451322 1.0287349 1.0125823 0.99667156 0.9809995 0.9655631 0.95035934 0.9353852 0.92063767 0.9061138 0.89181054 0.87772506 0.86385435 0.85019547 0.8367456 0.82350194 0.8104615 0.79762155 0.7849792 0.77253187 0.7602766 0.74821085 0.7363318 0.7246369 0.7131234 0.7017887 0.6906303 0.67964566 0.6688321 0.65818727 0.6477086 0.6373937 0.6272402 0.6172456 0.6074077 0.59772396 0.5881923 0.5788103 0.5695758 0.5604865 0.55154026 0.542735 0.53406847 0.5255386 0.51714337 0.5088807 0.5007486 0.49274495 0.48486793 0.47711557 0.4694859 0.46197712 0.4545873 0.44731465 0.44015735 0.4331136 0.42618164 0.4193598 0.41264632 0.4060395 0.39953774 0.39313936 0.3868428 0.38064638 0.3745486 0.36854798 0.36264288 0.35683188 0.35111347 0.34548622 0.3399487 0.3344995 0.32913724 0.32386053 0.31866804 0.31355843 0.30853042 0.3035827 0.298714 0.2939231 0.28920874 0.28456974 0.2800049 0.275513 0.27109295 0.2667436 0.2624638 0.25825247 0.25410852 0.25003088 0.24601851 0.24207035 0.23818539 0.23436263 0.23060109 0.22689979 0.22325775 0.21967405 0.21614775 0.21267796 0.20926376 0.20590426 0.20259859 0.1993459 0.19614536 0.1929961 0.18989733 0.18684824 0.18384804 0.18089592 0.17799117 0.17513297 0.17232063 0.16955338 0.16683052 0.16415134 0.16151515 0.15892123 0.15636891 0.15385756 0.1513865 0.14895508 0.14656268 0.14420865 0.14189242 0.13961336 0.13737087 0.13516437 0.13299328 0.13085704 0.1287551 0.12668689 0.12465187 0.12264952 0.12067933 0.11874075 0.11683331 0.114956476 0.11310978 0.11129274 0.10950487 0.10774571 0.106014796 0.104311675 0.1026359 0.10098703 0.099364646 0.097768314 0.09619761 0.09465214 0.09313148 0.09163525 0.090163045 0.08871449 0.08728919 0.085886784 0.08450691 0.08314919 0.08181328 0.08049883 0.07920549 0.077932924 0.0766808 0.07544879 0.074236564 0.073043816 0.07187022 0.07071548 0.06957929 0.06846135 0.06736137 0.06627906 0.065214135 0.06416632 0.06313534 0.06212092 0.06112279 0.060140703 0.05917439 0.0582236 0.057288084 0.056367602 0.055461902 0.054570757 0.053693928 0.052831184 0.051982306 0.051147062 0.050325237

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.412" PeakHeight="110.0" Num="3" Error="0.0">
-20.524 3.273 -0.24
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.412" EndFrequency="4.125" PeakHeight="238.129" Num="5" zHalfNm="213.789" Error="3.373">
-59.579 12.517 -9.044 4.97 -1.743
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="12" EarthRadius="6370.0">
<QuasiParabolic ID="0" StartDistance="6460.0127" EndDistance="6480.001" A="-7.4471978E11" B="2.29851792E8" C="-17735.307" Error="0.00435"/>
<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6505.083" A="-3.53565409E11" B="1.09125128E8" C="-8419.979" Error="0.00225"/>
<QuasiParabolic ID="2" StartDistance="6505.083" EndDistance="6530.167" A="0.0" B="673.162" C="-0.05892944" Error="0.00821"/>
<QuasiParabolic ID="3" StartDistance="6530.167" EndDistance="6550.0" A="1.03537549E11" B="-3.1862192E7" C="2451.2715" Error="0.00821"/>
<QuasiParabolic ID="4" StartDistance="6550.0" EndDistance="6555.0" A="3.86958787E11" B="-1.18403032E8" C="9057.442" Error="0.0098"/>
<QuasiParabolic ID="5" StartDistance="6555.0" EndDistance="6562.0" A="1.06730996E13" B="-3.25681357E9" C="248448.03" Error="0.0172"/>
<QuasiParabolic ID="6" StartDistance="6562.0" EndDistance="6566.0" A="6.2504876E12" B="-1.9088672E9" C="145739.53" Error="0.00372"/>
<QuasiParabolic ID="7" StartDistance="6566.0" EndDistance="6572.0" A="1.36481006E13" B="-4.16217626E9" C="317328.7" Error="0.00487"/>
<QuasiParabolic ID="8" StartDistance="6572.0" EndDistance="6576.0" A="3.49309292E13" B="-1.06389955E10" C="810087.3" Error="0.00157"/>
<QuasiParabolic ID="9" StartDistance="6576.0" EndDistance="6584.0" A="8.2789244E13" B="-2.51944428E10" C="1916797.1" Error="0.017"/>
<QuasiParabolic ID="10" StartDistance="6584.0" EndDistance="6591.0" A="-8.955839E13" B="2.71590298E10" C="-2059013.4" Error="0.0155"/>
<QuasiParabolic ID="11" StartDistance="6591.0" EndDistance="6608.129" A="-2.15304907E13" B="6.5163648E9" C="-493039.72" Error="0.00856"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="75.25" Depth="0.201"/>
<TopsideChapman PeakHeight="238.129" PeakDensity="211111.97" PeakScaleHeight="19.291" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
