<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-18 -138 21:55:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 95% PACIFIC flags: Multiple candidates for F2x cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.18 (138) 21:55:00</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">
FF202613805182155001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.600" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.906" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="14.063" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.000" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.000" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.950" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="212.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="212.500" 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="3.400" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="240.270" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.370" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.000" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.000" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="226.328" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="207.150" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.510" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="27.417" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.010" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="14.950" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="24.330" 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="25">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
212.500 214.000 215.500 217.000 218.500 220.000 220.000 222.500 222.500 223.881 225.420 227.145 229.093 231.309 233.854 236.805 240.270 244.393 249.384 255.549 263.356 273.562 287.474 307.559 339.096
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 0 0 0 0 69 72 66 66 81 84 66 66 66 66 69 66 78 81 69 66 69 72 48 45
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="366">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.173 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 133.91667 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 157.83333 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 181.75 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 226.328 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.22171172 0.2445107 0.26412988 0.2811535 0.29602 0.3090446 0.32046258 0.33044627 0.3391276 0.3466064 0.35296097 0.35825133 0.3625237 0.36581284 0.3681446 0.36953706 0.37 0.36979857 0.3691146 0.36803278 0.36648047 0.36446986 0.36201707 0.35906535 0.3556425 0.35170725 0.34730175 0.3423337 0.3368685 0.33078375 0.3240585 0.31670454 0.30860487 0.2997772 0.29010513 0.27950853 0.2678302 0.25503713 0.24081759 0.22507744 0.205 0.205 0.205 0.205 0.205 0.205 0.205 0.205 0.205 0.205 0.205 0.205 0.205 0.205 0.205 0.205 0.205 0.205 0.205 0.205 0.205 0.205 0.205 0.205 0.205 0.205 0.20614983 0.21304879 0.21994774 0.2268467 0.23374565 0.2406446 0.24754356 0.2544425 0.26134145 0.26824042 0.27513936 0.28203833 0.28893727 0.29583624 0.30273518 0.30963415 0.3165331 0.32343206 0.330331 0.33722997 0.3441289 0.35102788 0.35792682 0.3648258 0.37 0.37723887 0.4103831 0.45096755 0.49906603 0.5533735 0.61186683 0.6729531 0.7357831 0.80013794 0.86612284 0.93405676 1.0043706 1.0775528 1.1541469 1.2347784 1.3201323 1.410929 1.5079969 1.6121086 1.7239457 1.8439759 1.9720283 2.1070385 2.2466846 2.3875172 2.5254238 2.656729 2.7788117 2.8903568 2.9910383 3.0812638 3.161683 3.2330995 3.2963285 3.3520715 3.4009793 3.4435978 3.4803932 3.5117548 3.538001 3.5593889 3.5761275 3.5883667 3.5962255 3.59977 3.6 3.5992963 3.595706 3.5891926 3.579892 3.5679398 3.553472 3.5366235 3.517528 3.4963176 3.4731221 3.4480686 3.4212813 3.3928814 3.362986 3.3317096 3.2991624 3.2654505 3.2306764 3.1949382 3.1583307 3.120944 3.0828643 3.0441735 3.0049505 2.9652693 2.9252005 2.884811 2.844164 2.803319 2.7623322 2.721257 2.6801424 2.6390355 2.5979795 2.5570154 2.516181 2.4755116 2.43504 2.3947968 2.3548102 2.315106 2.2757077 2.2366376 2.1979156 2.1595597 2.1215868 2.0840118 2.0468478 2.0101073 1.9738007 1.9379375 1.9025261 1.8675735 1.8330859 1.7990683 1.7655251 1.7324595 1.6998744 1.6677712 1.6361513 1.6050152 1.5743625 1.5441929 1.5145051 1.4852974 1.4565678 1.4283136 1.4005321 1.3732202 1.3463742 1.3199903 1.2940645 1.2685925 1.2435699 1.2189918 1.1948533 1.1711497 1.1478757 1.1250259 1.102595 1.0805775 1.058968 1.0377607 1.0169502 0.99653065 0.9764963 0.95684147 0.9375603 0.9186472 0.9000963 0.88190186 0.86405814 0.8465594 0.82940006 0.8125743 0.79607666 0.77990144 0.76404315 0.7484963 0.73325545 0.7183152 0.7036702 0.6893152 0.6752449 0.6614544 0.64793825 0.6346917 0.62170964 0.6089872 0.5965196 0.584302 0.57232976 0.5605982 0.54910284 0.5378391 0.5268026 0.515989 0.50539404 0.49501342 0.48484308 0.47487888 0.46511686 0.45555303 0.44618356 0.43700463 0.4280125 0.41920346 0.41057393 0.40212035 0.39383924 0.38572717 0.3777808 0.36999682 0.36237198 0.35490313 0.3475871 0.34042087 0.33340144 0.32652584 0.31979117 0.31319463 0.3067334 0.30040476 0.29420605 0.2881346 0.28218788 0.27636334 0.27065852 0.26507097 0.2595983 0.25423822 0.2489884 0.24384663 0.23881066 0.23387837 0.22904764 0.2243164 0.21968262 0.21514429 0.21069947 0.20634626 0.20208278 0.19790718 0.19381769 0.18981251 0.18588993 0.18204826 0.17828584 0.17460103 0.17099226 0.16745795 0.16399658 0.16060665 0.15728669 0.15403527 0.15085097 0.1477324 0.14467825 0.14168714 0.13875781 0.13588898 0.13307941 0.13032787 0.12763315 0.12499411 0.12240959 0.119878456 0.117399625 0.11497201 0.11259456 0.11026624 0.107986026 0.10575294 0.103566 0.10142426 0.09932679 0.097272664 0.095261 0.09329092 0.09136156 0.089472085 0.08762167 0.0858095 0.0840348 0.08229679 0.08059471 0.07892782 0.0772954 0.07569672 0.0741311 0.072597854 0.07109631 0.06962581 0.068185724 0.066775404 0.06539426 0.06404167 0.06271705 0.06141982 0.060149416 0.058905285 0.057686884 0.05649368 0.05532515 0.05418079 0.053060092 0.051962573 0.050887752

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.37" PeakHeight="110.0" Num="3" Error="0.0">
-19.335 2.676 -0.168
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.37" EndFrequency="3.6" PeakHeight="226.328" Num="5" zHalfNm="207.15" Error="2.259">
-47.841 6.121 -4.467 2.54 -0.931
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="9" EarthRadius="6370.0">
<QuasiParabolic ID="0" StartDistance="6460.0166" EndDistance="6480.001" A="-6.0086616E11" B="1.85452512E8" C="-14309.471" Error="0.00238"/>
<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6503.917" A="-2.94541689E11" B="9.0907936E7" C="-7014.3643" Error="0.00165"/>
<QuasiParabolic ID="2" StartDistance="6503.917" EndDistance="6527.833" A="0.0" B="-551.99084" C="0.12691553" Error="0.00788"/>
<QuasiParabolic ID="3" StartDistance="6527.833" EndDistance="6551.0" A="9.6727212E10" B="-2.9749648E7" C="2287.4763" Error="0.0083"/>
<QuasiParabolic ID="4" StartDistance="6551.0" EndDistance="6555.0" A="1.10125415E13" B="-3.36231398E9" C="256642.86" Error="0.0102"/>
<QuasiParabolic ID="5" StartDistance="6555.0" EndDistance="6562.0" A="9.5118091E12" B="-2.90442445E9" C="221716.14" Error="0.00169"/>
<QuasiParabolic ID="6" StartDistance="6562.0" EndDistance="6569.0" A="2.04739308E13" B="-6.2455163E9" C="476294.9" Error="0.0147"/>
<QuasiParabolic ID="7" StartDistance="6569.0" EndDistance="6576.0" A="5.7885128E13" B="-1.76357417E10" C="1343262.9" Error="0.004"/>
<QuasiParabolic ID="8" StartDistance="6576.0" EndDistance="6596.328" A="-3.28363546E13" B="9.9559496E9" C="-754645.5" Error="0.0133"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="71.75" Depth="0.165"/>
<TopsideChapman PeakHeight="226.328" PeakDensity="160794.05" PeakScaleHeight="14.95" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
