<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-04 -094 06:05:00.000"
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 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 40% PACIFIC flags: Multiple candidates for F2x cusp, One of F2 cusps was derived from the other, Unidentified traces above foF2</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.04 (094) 06:05:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.19" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.97" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202609404040605001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="27" >
<URSI ID="00" Val="5.300" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.781" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="20.040" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.400" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="30" Val="4.275" Name="foEs" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.775" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.600" 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="34" Val="97.500" 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="0.200" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="5.175" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="270.568" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.775" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.775" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="249.304" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="236.317" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.304" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<Custom Name="fminEs" Val="2.400" Description="Minimum frequency of Es-layer" Units="MHz" />
<URSI ID="94" Val="18.796" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.538" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="10.583" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="18.560" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.100" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="2">
<Trace Type="standard" Layer="F2" Polarization="O" Num="22">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
4.775 4.8 4.825 4.85 4.875 4.9 4.925 4.95 4.975 5.0 5.025 5.05 5.075 5.1 5.125 5.15 5.175 5.2 5.225 5.25 5.275 5.3
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
257.500 260.000 260.000 262.500 262.500 262.500 262.782 263.101 263.465 263.883 264.370 264.944 265.630 266.464 267.500 268.822 270.568 272.979 276.526 282.258 293.093 321.318
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
78 84 96 90 0 54 60 60 57 57 60 57 0 54 0 57 0 0 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 -1.5625 -1.5625 -1.5625 10.9375 -1.5625 -1.5625
</TraceValueList>
</Trace>
<Trace Type="standard" Layer="Es" Polarization="O" Num="76">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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 4.15 4.175 4.2 4.225 4.25 4.275
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
97.500 97.500 97.500 97.500 97.500 97.500 98.750 100.000 97.500 97.500 100.000 100.000 101.250 102.500 102.500 102.500 100.000 97.500 97.500 97.500 100.000 99.375 98.750 98.125 97.500 97.500 97.500 102.500 100.000 100.000 97.500 97.500 97.500 97.500 97.500 100.000 100.000 100.000 100.000 100.000 100.000 100.000 97.500 97.500 97.500 97.500 97.500 97.500 97.500 97.500 97.500 97.500 97.500 97.500 97.500 98.036 98.571 99.107 99.643 100.179 100.714 101.250 101.786 102.321 102.857 103.393 103.929 104.464 105.000 103.750 102.500 103.000 103.500 104.000 104.500 105.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 69 69 72 0 69 0 69 69 72 75 72 0 66 69 66 0 45 51 36 30 0 0 0 69 84 84 93 96 96 102 105 105 102 99 96 96 99 102 99 96 102 99 84 81 0 84 78 78 78 78 75 75 69 72 63 0 0 87 0 0 0 96 105 102 99 0 0 96 0 90 0 0 84 0 87
</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 -7.8125 -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 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="336">
<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 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 213.25 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 249.304 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0
</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 0.39488587 0.45606318 0.5252084 0.6026742 0.68879235 0.78386825 0.8881646 1.0018836 1.1252309 1.2583041 1.4011351 1.5536427 1.7155908 1.8866456 2.066256 2.25371 2.4480543 2.64819 2.852773 3.060281 3.2690926 3.477371 3.6831732 3.8845365 4.079396 4.2657943 4.441781 4.6054993 4.7551746 4.8892198 5.006206 5.1049023 5.184256 5.243442 5.2818284 5.2990108 5.3 5.2977924 5.287156 5.2682204 5.2415495 5.207706 5.167246 5.120715 5.068646 5.0115542 4.9499364 4.8842683 4.815003 4.7425723 4.6673822 4.5898175 4.5102377 4.428979 4.3463545 4.262656 4.178153 4.093093 4.0077047 3.9221978 3.836763 3.7515738 3.6667883 3.5825486 3.4989824 3.4162042 3.334316 3.2534082 3.17356 3.0948408 3.017311 2.941022 2.8660176 2.7923343 2.720002 2.6490445 2.5794804 2.5113227 2.4445806 2.3792584 2.3153572 2.2528744 2.1918051 2.1321406 2.0738711 2.0169835 1.9614636 1.907295 1.8544604 1.8029408 1.7527164 1.7037665 1.6560694 1.6096028 1.5643442 1.5202702 1.4773576 1.4355825 1.3949212 1.3553497 1.3168441 1.2793806 1.2429353 1.2074848 1.1730056 1.1394744 1.1068684 1.0751647 1.0443411 1.0143756 0.98524636 0.9569322 0.92941195 0.9026652 0.8766717 0.8514115 0.82686543 0.8030143 0.7798396 0.7573231 0.735447 0.71419394 0.69354695 0.6734894 0.65400505 0.6350782 0.6166933 0.59883547 0.58149 0.5646425 0.5482791 0.5323863 0.5169508 0.50195974 0.4874006 0.47326115 0.45952955 0.4461942 0.43324384 0.42066756 0.40845472 0.39659488 0.38507804 0.37389436 0.36303434 0.3524887 0.34224838 0.33230472 0.3226491 0.3132733 0.3041693 0.2953292 0.2867455 0.27841073 0.27031773 0.26245958 0.25482944 0.24742077 0.24022715 0.23324236 0.2264604 0.21987537 0.21348158 0.2072735 0.20124575 0.19539312 0.18971053 0.18419306 0.17883591 0.17363445 0.16858415 0.16368064 0.15891966 0.15429707 0.14980887 0.14545114 0.1412201 0.13711208 0.1331235 0.12925088 0.12549089 0.12184023 0.11829574 0.11485431 0.111512974 0.10826881 0.105119 0.102060795 0.099091545 0.096208654 0.09340961 0.09069199 0.08805342 0.0854916 0.083004296 0.08058935 0.07824465 0.075968154 0.07375789 0.07161191 0.06952837 0.06750544 0.065541364 0.063634425 0.06178296 0.059985362 0.05824006 0.056545533 0.054900303 0.053302944 0.051752053 0.050246287

</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="5.3" PeakHeight="249.304" Num="5" zHalfNm="236.317" Error="0.163">
-36.178 0.218 -0.121 0.058 -0.031
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="11" 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="624.6116" C="-0.055851232" Error="0.0118"/>
<QuasiParabolic ID="3" StartDistance="6548.833" EndDistance="6550.0" A="-6.4390745E12" B="1.96608832E9" C="-150079.88" Error="0.0162"/>
<QuasiParabolic ID="4" StartDistance="6550.0" EndDistance="6583.0" A="8.3284886E10" B="-2.5471786E7" C="1947.6082" Error="0.0784"/>
<QuasiParabolic ID="5" StartDistance="6583.0" EndDistance="6585.0" A="3.43360133E13" B="-1.04318915E10" C="792348.6" Error="0.0511"/>
<QuasiParabolic ID="6" StartDistance="6585.0" EndDistance="6587.0" A="2.89521271E12" B="-8.8267277E8" C="67275.06" Error="0.0338"/>
<QuasiParabolic ID="7" StartDistance="6587.0" EndDistance="6591.0" A="3.3230357E13" B="-1.00932823E10" C="766425.7" Error="0.0182"/>
<QuasiParabolic ID="8" StartDistance="6591.0" EndDistance="6603.0" A="7.6572497E13" B="-2.32451994E10" C="1764143.5" Error="0.0623"/>
<QuasiParabolic ID="9" StartDistance="6603.0" EndDistance="6611.0" A="6.0768549E13" B="-1.84583004E10" C="1401664.4" Error="0.0243"/>
<QuasiParabolic ID="10" StartDistance="6611.0" EndDistance="6619.304" A="-1.95582744E14" B="5.9094659E10" C="-4463784.0" Error="0.0077"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="103.25" Depth="0.154"/>
<TopsideChapman PeakHeight="249.304" PeakDensity="348511.16" PeakScaleHeight="10.583" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
