<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-28 -118 22:05:00.000"
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="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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 70% PACIFIC flags: F2 cusps do not match</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.28 (118) 22:05:00</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">
FF202611804282205001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.750" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.919" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="14.695" 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="4.350" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="222.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="222.500" 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="3.675" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="254.759" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.376" 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="225.517" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="210.839" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.470" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="21.040" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.833" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="11.123" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="20.690" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.240" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="30">
<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 3.75
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
222.500 222.500 222.500 224.167 225.833 227.500 227.500 227.500 230.000 230.000 230.000 232.500 233.750 235.000 235.000 240.000 242.500 245.000 245.000 245.000 245.549 246.222 247.064 248.152 249.607 251.657 254.759 260.000 270.761 305.464
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 69 66 0 0 66 69 69 66 69 66 66 0 60 63 60 63 60 60 0 63 60 51 48 51 51 63 66 0 0
</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 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="308">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.065 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 136.25 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 162.5 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 188.75 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 225.517 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.22524145 0.24845243 0.26840508 0.2857126 0.30082294 0.31405833 0.32566103 0.33580625 0.34462807 0.35222787 0.35868454 0.36406076 0.36840242 0.3717449 0.3741145 0.37552956 0.376 0.37578514 0.37522724 0.3742433 0.37292457 0.37119362 0.36906207 0.36646175 0.3635763 0.36018178 0.3563102 0.35207427 0.34735906 0.3421425 0.33641654 0.33012193 0.3232918 0.31585696 0.3077956 0.29897934 0.28945836 0.27901864 0.2675594 0.25512293 0.24139602 0.22623634 0.20955679 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 0.20335238 0.21005714 0.2167619 0.22346666 0.23017143 0.23687619 0.24358095 0.2502857 0.25699046 0.26369524 0.2704 0.27710477 0.2838095 0.2905143 0.29721904 0.30392382 0.31062856 0.31733334 0.3240381 0.33074287 0.3374476 0.3441524 0.35085714 0.35756192 0.36426666 0.37097144 0.376 0.38793766 0.43902063 0.4953016 0.5566227 0.62291586 0.694179 0.77053255 0.85212743 0.9391485 1.0317699 1.1301945 1.2345494 1.3448806 1.4611437 1.5831023 1.7103832 1.8423874 1.9782629 2.1170044 2.2572901 2.3977783 2.536929 2.6732922 2.8054163 2.931993 3.0518181 3.163956 3.2675617 3.361994 3.4467638 3.5214994 3.5859325 3.6398573 3.6831574 3.7157423 3.7375507 3.7485533 3.75 3.7493157 3.7436726 3.7326112 3.7164748 3.6956065 3.6703477 3.641034 3.6079943 3.5715487 3.5320067 3.489667 3.4448154 3.3977246 3.3486545 3.2978508 3.245546 3.1919584 3.1372929 3.0817409 3.025481 2.9686792 2.9114892 2.8540528 2.7965007 2.7389529 2.6815195 2.6243002 2.5673864 2.5108604 2.4547966 2.3992617 2.3443153 2.2900107 2.236395 2.1835089 2.1313884 2.080065 2.0295649 1.97991 1.9311192 1.8832073 1.836186 1.790064 1.7448472 1.7005394 1.6571417 1.6146535 1.5730724 1.5323943 1.4926133 1.4537228 1.4157145 1.3785794 1.3423072 1.3068871 1.2723078 1.2385566 1.2056212 1.1734884 1.1421444 1.1115757 1.0817679 1.0527071 1.0243785 0.9967678 0.9698605 0.9436419 0.9180975 0.8932128 0.8689733 0.8453647 0.82237273 0.7999834 0.7781827 0.7569568 0.7362922 0.71617544 0.69659334 0.677533 0.65898144 0.64092624 0.62335503 0.6062557 0.5896164 0.5734255 0.5576715 0.5423433 0.52743 0.51292086 0.49880534 0.48507327 0.47171465 0.45871967 0.44607878 0.43378264 0.42182216 0.41018844 0.39887276 0.3878667 0.37716198 0.3667505 0.35662448 0.34677622 0.3371982 0.3278832 0.3188241 0.310014 0.30144617 0.293114 0.2850111 0.27713132 0.2694685 0.26201677 0.2547704 0.24772377 0.24087143 0.23420806 0.22772852 0.22142775 0.21530089 0.20934315 0.2035499 0.19791663 0.19243896 0.18711258 0.18193339 0.1768973 0.17200041 0.16723885 0.16260892 0.15810701 0.15372957 0.14947318 0.14533451 0.1413103 0.13739741 0.13359277 0.12989338 0.12629634 0.12279883 0.11939811 0.11609149 0.112876385 0.10975026 0.10671067 0.103755206 0.100881554 0.09808745 0.095370695 0.09272916 0.09016075 0.08766345 0.08523529 0.08287437 0.08057882 0.07834683 0.07617665 0.074066564 0.072014906 0.07002007 0.06808048 0.0661946 0.06436095 0.06257808 0.060844593 0.05915911 0.057520315 0.055926908 0.054377634 0.052871272 0.05140663

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.376" PeakHeight="110.0" Num="3" Error="0.0">
-19.523 2.766 -0.178
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.376" EndFrequency="3.75" PeakHeight="225.517" Num="5" zHalfNm="210.839" Error="0.519">
-37.427 1.161 -0.815 0.417 -0.103
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="11" EarthRadius="6370.0">
<QuasiParabolic ID="0" StartDistance="6460.02" EndDistance="6480.001" A="-6.2059197E11" B="1.91540736E8" C="-14779.236" Error="0.00242"/>
<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6506.25" A="-2.61545705E11" B="8.0723984E7" C="-6228.561" Error="0.00201"/>
<QuasiParabolic ID="2" StartDistance="6506.25" EndDistance="6532.5" A="0.0" B="1322.9427" C="-0.16334805" Error="0.0208"/>
<QuasiParabolic ID="3" StartDistance="6532.5" EndDistance="6534.0" A="-5.1181891E12" B="1.56657549E9" C="-119874.33" Error="0.0483"/>
<QuasiParabolic ID="4" StartDistance="6534.0" EndDistance="6554.0" A="2.02858217E11" B="-6.215028E7" C="4760.335" Error="0.0765"/>
<QuasiParabolic ID="5" StartDistance="6554.0" EndDistance="6555.0" A="-2.54471071E12" B="7.7628998E8" C="-59203.68" Error="6.14E-11"/>
<QuasiParabolic ID="6" StartDistance="6555.0" EndDistance="6559.0" A="2.53318241E12" B="-7.7302899E8" C="58974.74" Error="0.047"/>
<QuasiParabolic ID="7" StartDistance="6559.0" EndDistance="6563.0" A="1.91229644E13" B="-5.83166E9" C="444599.94" Error="0.0795"/>
<QuasiParabolic ID="8" StartDistance="6563.0" EndDistance="6570.0" A="1.92446328E13" B="-5.8687375E9" C="447424.62" Error="0.053"/>
<QuasiParabolic ID="9" StartDistance="6570.0" EndDistance="6584.0" A="4.0704437E13" B="-1.24014029E10" C="944583.3" Error="0.0455"/>
<QuasiParabolic ID="10" StartDistance="6584.0" EndDistance="6595.517" A="-6.9282352E13" B="2.10089226E10" C="-1592652.8" Error="0.0134"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="78.75" Depth="0.176"/>
<TopsideChapman PeakHeight="225.517" PeakDensity="174472.7" PeakScaleHeight="11.123" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
