<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-17 -107 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: 90% PACIFIC flags: One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.17 (107) 07:15:00</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">
FF202610704170715001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.850" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.919" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.168" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.300" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.300" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.175" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="215.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="215.000" 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="0.100" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.700" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="240.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.300" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.300" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="219.768" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="204.847" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.892" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="21.320" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.495" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="11.335" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="21.080" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.220" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="23">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 2.8 2.825 2.85
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
215.000 216.000 217.000 218.000 219.000 220.000 222.500 225.000 225.000 227.500 227.500 230.000 232.500 235.000 237.500 237.500 240.000 245.000 250.000 252.500 260.000 265.000 275.000
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
57 0 0 0 0 81 81 69 72 72 72 72 69 69 72 72 72 72 66 66 69 45 42
</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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="295">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 134.5 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 183.5 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 219.768 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0
</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 0.353812 0.35317364 0.35223874 0.35086352 0.34905878 0.3468389 0.3442219 0.3411586 0.33767787 0.33367795 0.32927206 0.3243802 0.3189446 0.3129916 0.30645373 0.29930657 0.29149976 0.28296635 0.27368933 0.26350668 0.2523124 0.24007721 0.22657463 0.21160045 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 0.20628572 0.21257143 0.21885714 0.22514285 0.23142858 0.23771429 0.244 0.2502857 0.25657144 0.26285714 0.26914287 0.27542856 0.2817143 0.288 0.2942857 0.30057144 0.30685714 0.31314287 0.31942856 0.3257143 0.332 0.3382857 0.34457144 0.35085714 0.354 0.37478063 0.41949895 0.46810082 0.52025574 0.57578343 0.6346116 0.6967521 0.76228327 0.83134717 0.9040558 0.9805591 1.0609437 1.1452698 1.2334899 1.3254817 1.4209619 1.5195004 1.6204613 1.7230667 1.8263437 1.9292467 2.0305722 2.1292245 2.2240949 2.3142138 2.3987644 2.4770365 2.5485265 2.6128454 2.6697023 2.7189255 2.7603822 2.7940161 2.819787 2.8376725 2.8476737 2.85 2.8498838 2.846787 2.8396566 2.8287382 2.8142788 2.796524 2.7757165 2.7520947 2.7258906 2.6973298 2.6666298 2.634 2.599641 2.5637434 2.5264888 2.4880488 2.4485857 2.408252 2.3671901 2.3255343 2.2834086 2.2409291 2.198203 2.1553295 2.1123996 2.0694976 2.0267003 1.9840776 1.9416933 1.8996054 1.8578662 1.8165224 1.775616 1.7351848 1.6952615 1.6558754 1.617052 1.5788131 1.5411777 1.5041616 1.467778 1.4320375 1.3969486 1.3625176 1.328749 1.2956452 1.2632078 1.231436 1.2003284 1.169882 1.1400931 1.1109569 1.0824677 1.054619 1.0274037 1.0008143 0.9748424 0.94947964 0.9247168 0.90054446 0.8769532 0.85393304 0.83147395 0.8095658 0.7881982 0.7673607 0.74704295 0.72723454 0.7079249 0.68910366 0.6707604 0.6528847 0.6354664 0.6184953 0.60196126 0.58585435 0.57016474 0.5548827 0.53999865 0.52550316 0.51138693 0.49764082 0.48425585 0.4712232 0.4585342 0.4461804 0.4341534 0.42244506 0.4110474 0.39995253 0.38915282 0.37864077 0.368409 0.35845038 0.34875783 0.3393245 0.3301437 0.32120886 0.31251362 0.3040517 0.29581702 0.28780362 0.28000566 0.27241755 0.2650337 0.25784874 0.25085738 0.24405457 0.23743524 0.23099455 0.22472773 0.21863018 0.21269737 0.2069249 0.2013085 0.19584401 0.19052733 0.18535453 0.18032174 0.1754252 0.17066127 0.16602637 0.16151705 0.15712991 0.15286168 0.14870916 0.14466922 0.14073883 0.13691503 0.13319494 0.12957577 0.12605481 0.12262938 0.119296916 0.11605489 0.112900876 0.10983247 0.106847376 0.103943326 0.10111813 0.09836966 0.09569583 0.09309462 0.09056406 0.08810224 0.085707285 0.0833774 0.08111081 0.078905806 0.07676071 0.0746739 0.07264379 0.07066885 0.06874757 0.06687851 0.06506024 0.06329139 0.061570615 0.059896607 0.058268096 0.056683853 0.055142667 0.053643376 0.05218484 0.05076595

</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="2.85" PeakHeight="219.768" Num="5" zHalfNm="204.847" Error="0.873">
-36.653 0.808 -0.766 0.47 -0.127
</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="6504.5" A="-2.52482355E11" B="7.7926656E7" C="-6012.734" Error="0.00135"/>
<QuasiParabolic ID="2" StartDistance="6504.5" EndDistance="6529.0" A="0.0" B="-2440.6848" C="0.41523907" Error="0.0354"/>
<QuasiParabolic ID="3" StartDistance="6529.0" EndDistance="6551.0" A="1.14842763E11" B="-3.5262176E7" C="2706.8164" Error="0.0354"/>
<QuasiParabolic ID="4" StartDistance="6551.0" EndDistance="6552.0" A="-2.78926905E12" B="8.5135418E8" C="-64963.49" Error="0.0"/>
<QuasiParabolic ID="5" StartDistance="6552.0" EndDistance="6559.0" A="1.02111516E13" B="-3.11702835E9" C="237874.0" Error="0.029"/>
<QuasiParabolic ID="6" StartDistance="6559.0" EndDistance="6565.0" A="1.31151167E13" B="-4.00251853E9" C="305375.9" Error="0.0144"/>
<QuasiParabolic ID="7" StartDistance="6565.0" EndDistance="6569.0" A="2.84418397E13" B="-8.6717409E9" C="660990.75" Error="0.00347"/>
<QuasiParabolic ID="8" StartDistance="6569.0" EndDistance="6579.0" A="1.54195921E13" B="-4.7069829E9" C="359212.84" Error="0.0229"/>
<QuasiParabolic ID="9" StartDistance="6579.0" EndDistance="6589.768" A="-3.918388E13" B="1.18923407E10" C="-902325.6" Error="0.00848"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="73.5" Depth="0.154"/>
<TopsideChapman PeakHeight="219.768" PeakDensity="100775.44" PeakScaleHeight="11.335" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
