<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-29 -119 07:15:00.000"
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 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" >
2026.04.29 (119) 07:15:00</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">
FF202611904290715001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.725" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.544" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="13.203" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.025" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.025" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.050" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="257.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="257.500" 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="3.550" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="290.322" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.025" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.025" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="263.794" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="243.373" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.892" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="29.262" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.143" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="15.596" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="28.050" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.480" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="29">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 3.625 3.65 3.675 3.7 3.725
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
257.500 257.500 260.000 260.000 260.000 262.500 262.500 265.000 265.000 265.000 267.500 272.500 272.500 272.500 272.500 275.000 280.000 280.000 285.000 287.500 287.500 290.322 293.803 298.203 303.943 311.744 322.959 340.459 371.579
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
84 87 78 78 93 99 102 102 90 87 108 93 84 84 93 99 93 96 87 78 75 78 81 81 75 81 81 75 57
</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 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="415">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 144.41667 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 178.83333 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 213.25 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 263.794 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0
</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 0.35306162 0.35242635 0.351496 0.35034946 0.34906474 0.34757262 0.34580722 0.34384936 0.34170708 0.3393199 0.33670086 0.33386406 0.33075932 0.32740733 0.32383022 0.31999075 0.3158602 0.31147584 0.30682194 0.3017886 0.29647052 0.29077086 0.28478742 0.2783704 0.27152064 0.2642219 0.2564137 0.24812241 0.23924045 0.22962193 0.21941046 0.20837834 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 0.20074576 0.20522034 0.20969492 0.21416949 0.21864407 0.22311865 0.22759321 0.2320678 0.23654237 0.24101695 0.24549152 0.2499661 0.25444067 0.25891525 0.26338983 0.2678644 0.272339 0.27681357 0.28128815 0.2857627 0.29023728 0.29471186 0.29918644 0.30366102 0.3081356 0.31261018 0.31708476 0.3215593 0.3260339 0.33050847 0.33498305 0.33945763 0.3439322 0.3484068 0.35288134 0.354 0.37828487 0.41396782 0.45321104 0.4956835 0.54106617 0.58909655 0.6395903 0.6924725 0.7477337 0.8054291 0.8656484 0.92851955 0.99421144 1.0628916 1.1347392 1.209934 1.288645 1.3710452 1.4572136 1.5472351 1.6410935 1.7386494 1.8397006 1.9438529 2.0505679 2.1591547 2.268799 2.3785875 2.4875357 2.5946922 2.699158 2.8001206 2.8969042 2.9889684 3.0759408 3.1575289 3.2335715 3.3039684 3.368701 3.4277868 3.4812832 3.5292485 3.5717704 3.6089323 3.640818 3.6675053 3.6890624 3.7055395 3.716985 3.7234306 3.725 3.7249367 3.72286 3.7179384 3.710295 3.700053 3.6873364 3.672269 3.6549735 3.6355715 3.6141827 3.5909252 3.5659144 3.5392632 3.511082 3.4814777 3.4505546 3.4184132 3.385151 3.3508615 3.3156354 3.2795596 3.2427175 3.2051885 3.1670492 3.1283722 3.089227 3.0496795 3.0097926 2.9696255 2.9292347 2.8886735 2.8479922 2.8072383 2.7664561 2.725688 2.684973 2.6443481 2.603848 2.5635045 2.5233476 2.4834054 2.4437034 2.4042659 2.365115 2.3262706 2.287752 2.2495756 2.2117577 2.174312 2.1372519 2.1005886 2.0643322 2.0284927 1.9930775 1.9580944 1.9235492 1.8894473 1.8557935 1.8225911 1.7898433 1.7575523 1.7257197 1.6943465 1.6634333 1.63298 1.6029859 1.5734501 1.5443711 1.5157472 1.4875762 1.4598556 1.4325824 1.4057537 1.3793662 1.3534161 1.3278997 1.3028129 1.2781518 1.2539117 1.2300884 1.2066772 1.1836733 1.161072 1.1388683 1.1170572 1.0956337 1.0745928 1.0539291 1.0336376 1.0137131 0.9941502 0.9749438 0.9560886 0.93757933 0.91941077 0.90157765 0.8840748 0.86689705 0.8500392 0.83349603 0.8172625 0.80133355 0.78570414 0.7703693 0.755324 0.74056345 0.72608274 0.71187705 0.69794166 0.68427193 0.6708631 0.6577107 0.6448101 0.63215685 0.6197466 0.607575 0.5956377 0.58393043 0.5724491 0.5611896 0.55014783 0.5393198 0.5287016 0.5182893 0.5080792 0.49806744 0.48825037 0.47862437 0.46918583 0.45993125 0.4508572 0.44196022 0.433237 0.42468426 0.41629875 0.4080773 0.40001678 0.39211416 0.3843664 0.3767705 0.3693236 0.36202288 0.35486543 0.3478486 0.3409696 0.3342258 0.32761464 0.32113346 0.31477985 0.30855128 0.30244535 0.29645965 0.2905919 0.28483975 0.27920097 0.2736734 0.2682548 0.2629431 0.25773618 0.25263202 0.2476286 0.24272396 0.23791616 0.23320332 0.22858356 0.22405508 0.21961607 0.2152648 0.21099952 0.20681855 0.20272025 0.19870299 0.19476518 0.19090524 0.18712166 0.18341292 0.17977758 0.17621416 0.17272125 0.16929747 0.16594148 0.1626519 0.15942743 0.15626682 0.15316878 0.15013209 0.14715554 0.14423792 0.14137809 0.13857491 0.13582726 0.13313402 0.13049415 0.12790656 0.12537025 0.12288419 0.12044739 0.11805887 0.11571769 0.11342289 0.11117358 0.10896885 0.106807806 0.1046896 0.102613375 0.10057831 0.09858357 0.09662838 0.09471195 0.09283351 0.09099231 0.08918761 0.08741869 0.085684836 0.08398536 0.08231958 0.08068683 0.079086445 0.0775178 0.07598026 0.0744732 0.07299603 0.07154815 0.07012898 0.068737954 0.06737451 0.0660381 0.0647282 0.06344428 0.062185816 0.06095231 0.059743267 0.058558203 0.05739664 0.056258112 0.055142168 0.054048356 0.052976236 0.051925384 0.05089537

</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="3.725" PeakHeight="263.794" Num="5" zHalfNm="243.373" Error="1.283">
-52.275 3.153 -2.295 1.253 -0.38
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="9" 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="6514.417" A="-1.28301556E11" B="3.9599244E7" C="-3055.372" Error="0.00167"/>
<QuasiParabolic ID="2" StartDistance="6514.417" EndDistance="6548.833" A="0.0" B="473.76596" C="-0.032695577" Error="0.0088"/>
<QuasiParabolic ID="3" StartDistance="6548.833" EndDistance="6582.0" A="3.05817887E10" B="-9421203.0" C="725.5728" Error="0.0088"/>
<QuasiParabolic ID="4" StartDistance="6582.0" EndDistance="6584.0" A="8.6740078E12" B="-2.63580416E9" C="200238.1" Error="0.0289"/>
<QuasiParabolic ID="5" StartDistance="6584.0" EndDistance="6591.0" A="6.9720977E12" B="-2.11882035E9" C="160977.48" Error="0.0134"/>
<QuasiParabolic ID="6" StartDistance="6591.0" EndDistance="6600.0" A="1.27940176E13" B="-3.88544768E9" C="294995.66" Error="0.0255"/>
<QuasiParabolic ID="7" StartDistance="6600.0" EndDistance="6616.0" A="2.60658692E13" B="-7.907221E9" C="599675.44" Error="0.0332"/>
<QuasiParabolic ID="8" StartDistance="6616.0" EndDistance="6633.794" A="-3.40068045E13" B="1.02525962E10" C="-772741.2" Error="0.0127"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="103.25" Depth="0.154"/>
<TopsideChapman PeakHeight="263.794" PeakDensity="172154.16" PeakScaleHeight="15.596" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
