<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-15 -105 04:40:00.000"
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 33 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 65% PACIFIC flags: Multiple candidates for F2x cusp, F2 cusps do not match</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.15 (105) 04:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.19" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.98" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202610504150440001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.775" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.702" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="10.273" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.125" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.125" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="2.925" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="235.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="235.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.625" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="265.811" 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="241.039" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="222.676" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.389" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="26.231" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.579" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="14.007" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="25.700" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.340" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="27">
<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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
235.000 235.000 236.000 237.000 238.000 239.000 240.000 242.500 242.500 245.000 247.500 248.750 250.000 250.000 251.484 253.147 255.026 257.164 259.619 262.467 265.811 269.794 274.615 280.574 288.124 298.003 311.484
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
84 84 0 0 0 0 60 63 60 63 84 0 87 87 72 72 72 69 72 0 69 0 66 69 66 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 -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="355">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 139.16667 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 168.33333 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 197.5 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 241.039 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0
</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 0.35347393 0.352762 0.35175505 0.3505324 0.3489521 0.3470975 0.34497866 0.3425364 0.33978727 0.33674988 0.3333779 0.32963315 0.32561377 0.321167 0.3164043 0.31120363 0.30563802 0.29957724 0.29311055 0.28615454 0.27862445 0.27052397 0.26174292 0.2523066 0.24211602 0.23105234 0.21895285 0.20588575 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 0.20352 0.2088 0.21408 0.21936 0.22464 0.22992 0.2352 0.24048 0.24576 0.25104 0.25632 0.2616 0.26688 0.27216 0.27744 0.28272 0.288 0.29328 0.29856 0.30384 0.30912 0.3144 0.31968 0.32496 0.33024 0.33552 0.3408 0.34608 0.35136 0.354 0.36975557 0.40436012 0.44287542 0.484884 0.5299186 0.5775875 0.6275805 0.679762 0.7340484 0.7904474 0.84904283 0.9098902 0.97309834 1.0387697 1.1069887 1.1777956 1.2512023 1.3271643 1.4055475 1.4861232 1.5685267 1.6523443 1.7369684 1.821755 1.9059727 1.9888496 2.0696287 2.1476183 2.2221925 2.2928624 2.3591917 2.4209132 2.4777954 2.5297117 2.5766091 2.618457 2.6552615 2.687067 2.713902 2.7358143 2.7528458 2.765037 2.7724144 2.7749949 2.775 2.7737427 2.7698448 2.76343 2.7546263 2.7435603 2.730359 2.7151487 2.6980534 2.679195 2.6586928 2.636664 2.613222 2.5884762 2.5625336 2.5354965 2.5074637 2.47853 2.448786 2.4183183 2.3872097 2.3555384 2.3233793 2.290803 2.2578764 2.2246623 2.1912205 2.1576068 2.1238737 2.0900702 2.0562422 2.022433 1.988682 1.9550267 1.9215014 1.8881377 1.8549653 1.822011 1.7892997 1.7568542 1.7246951 1.6928413 1.6613098 1.630116 1.5992738 1.5687954 1.5386919 1.5089726 1.4796462 1.4507198 1.4221995 1.3940905 1.3663971 1.3391227 1.3122696 1.2858398 1.2598343 1.2342535 1.2090974 1.1843652 1.1600556 1.1361673 1.1126977 1.0896447 1.0670053 1.0447763 1.0229543 1.0015355 0.980516 0.9598916 0.93965787 0.9198103 0.90034413 0.88125455 0.86253667 0.8441853 0.82619536 0.8085616 0.7912789 0.77434176 0.7577449 0.7414829 0.7255505 0.70994216 0.6946525 0.6796762 0.66500777 0.6506419 0.6365734 0.6227968 0.6093069 0.5960984 0.5831663 0.5705053 0.5581105 0.54597664 0.534099 0.52247256 0.5110924 0.49995393 0.4890523 0.47838286 0.46794105 0.4577223 0.44772223 0.43793643 0.42836055 0.41899037 0.40982172 0.40085045 0.39207256 0.38348407 0.3750811 0.36685973 0.3588163 0.35094702 0.34324834 0.3357166 0.3283484 0.32114026 0.3140888 0.30719072 0.30044279 0.2938418 0.28738466 0.28106833 0.27488977 0.26884606 0.26293433 0.25715172 0.2514955 0.24596298 0.24055146 0.23525834 0.23008108 0.2250172 0.22006424 0.2152198 0.21048154 0.20584716 0.2013144 0.1968811 0.19254506 0.18830417 0.18415639 0.18009968 0.17613207 0.1722516 0.16845639 0.16474457 0.16111434 0.15756391 0.15409152 0.1506955 0.14737417 0.14412588 0.14094906 0.13784212 0.13480355 0.13183184 0.12892555 0.12608321 0.12330345 0.12058489 0.11792619 0.115326025 0.11278313 0.11029623 0.107864104 0.10548555 0.1031594 0.10088448 0.098659694 0.09648392 0.09435609 0.09227514 0.090240054 0.08824982 0.08630344 0.08439996 0.08253844 0.08071795 0.07893758 0.07719647 0.07549373 0.07382853 0.07220005 0.07060747 0.06904999 0.06752686 0.06603732 0.06458061 0.06315603 0.061762862 0.06040041 0.05906801 0.057764985 0.0564907 0.055244517 0.054025814 0.05283399 0.051668454 0.05052862

</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="2.775" PeakHeight="241.039" Num="5" zHalfNm="222.676" Error="1.042">
-44.569 1.89 -1.347 0.767 -0.28
</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="6509.167" A="-1.78385355E11" B="5.5057208E7" C="-4248.116" Error="0.00152"/>
<QuasiParabolic ID="2" StartDistance="6509.167" EndDistance="6538.333" A="0.0" B="338.31592" C="-0.011957886" Error="0.00536"/>
<QuasiParabolic ID="3" StartDistance="6538.333" EndDistance="6567.0" A="4.8191783E10" B="-1.4834448E7" C="1141.5839" Error="0.00536"/>
<QuasiParabolic ID="4" StartDistance="6567.0" EndDistance="6568.0" A="1.78259115E13" B="-5.4290939E9" C="413373.9" Error="4.71E-10"/>
<QuasiParabolic ID="5" StartDistance="6568.0" EndDistance="6576.0" A="6.4120685E12" B="-1.95350182E9" C="148788.64" Error="0.00918"/>
<QuasiParabolic ID="6" StartDistance="6576.0" EndDistance="6584.0" A="1.20244331E13" B="-3.66042522E9" C="278572.97" Error="0.00838"/>
<QuasiParabolic ID="7" StartDistance="6584.0" EndDistance="6591.0" A="1.89078847E13" B="-5.7513887E9" C="437364.22" Error="0.00395"/>
<QuasiParabolic ID="8" StartDistance="6591.0" EndDistance="6599.0" A="-1.13228946E12" B="3.29683584E8" C="-23952.12" Error="0.0075"/>
<QuasiParabolic ID="9" StartDistance="6599.0" EndDistance="6611.039" A="-2.44356984E13" B="7.3923927E9" C="-559086.94" Error="0.00359"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="87.5" Depth="0.154"/>
<TopsideChapman PeakHeight="241.039" PeakDensity="95541.25" PeakScaleHeight="14.007" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
