<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-21 -141 01:10:00.000"
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: 50% PACIFIC flags: F2o cusp not found, One of F2 cusps was derived from the other, F2O model cusp does not fit trace</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.05.21 (141) 01:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.22" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.99" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="75.82641" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202614105210110001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.075" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.710" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="11.409" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.675" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.675" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.400" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="246.712" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="246.712" 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="2.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="262.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.675" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.675" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="244.303" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="228.637" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.533" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="22.405" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.605" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="11.889" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="22.060" 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="17">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
246.712 247.838 249.082 250.464 252.009 253.746 255.715 257.964 260.000 262.500 267.500 272.500 277.500 282.500 292.500 302.500 318.480
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 -10.9375 1.5625 10.9375 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="332">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 141.89934 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 173.79866 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 205.698 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 244.303 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0
</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 0.35354906 0.35298675 0.3521277 0.35105062 0.3497599 0.34826085 0.34648722 0.34444872 0.34215644 0.33962288 0.3368618 0.33375433 0.33039087 0.32679367 0.32286233 0.31863293 0.31408572 0.30915573 0.30395913 0.29835 0.2923472 0.28589913 0.27906242 0.27168894 0.26381296 0.25536895 0.24625795 0.23654558 0.22594593 0.21456926 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 0.20097198 0.20579965 0.21062735 0.21545504 0.22028272 0.22511041 0.22993809 0.23476578 0.23959348 0.24442115 0.24924885 0.25407654 0.25890422 0.2637319 0.2685596 0.27338728 0.27821496 0.28304267 0.28787035 0.29269803 0.2975257 0.3023534 0.3071811 0.31200877 0.31683648 0.32166415 0.32649183 0.33131954 0.33614722 0.3409749 0.34580258 0.35063028 0.354 0.36630005 0.40904713 0.45480108 0.50358796 0.5554588 0.61053145 0.66895056 0.7309044 0.79656565 0.86611533 0.9397437 1.017597 1.0997537 1.1862853 1.27711 1.3720714 1.470865 1.5730326 1.6779522 1.7848155 1.8926984 2.0005805 2.1073732 2.2119968 2.3134196 2.4106858 2.5029898 2.5896258 2.6700425 2.743797 2.810547 2.8700585 2.922157 2.9667113 3.0036645 3.0329494 3.0545547 3.0684536 3.074646 3.075 3.0739806 3.0690656 3.0602872 3.0478764 3.0320635 3.0130775 2.9911447 2.966487 2.9393206 2.9098558 2.8782961 2.8448374 2.8096669 2.7729647 2.7349012 2.6956394 2.6553326 2.6141262 2.5721567 2.5295522 2.486433 2.4429111 2.399091 2.3550696 2.310937 2.2667756 2.2226624 2.1786678 2.1348557 2.0912855 2.0480099 2.005078 1.9625336 1.920416 1.8787606 1.8375988 1.7969584 1.7568642 1.7173374 1.6783963 1.6400572 1.602333 1.5652349 1.5287718 1.4929506 1.4577765 1.4232532 1.3893824 1.356165 1.3236004 1.2916867 1.2604213 1.2298005 1.1998196 1.1704735 1.1417562 1.113661 1.086181 1.0593085 1.0330358 1.0073541 0.9822551 0.9577298 0.93376905 0.91036355 0.88750386 0.8651803 0.8433833 0.82210314 0.80133 0.781054 0.7612655 0.7419547 0.72311187 0.70472735 0.68679154 0.6692949 0.652228 0.63558155 0.61934626 0.60351306 0.58807296 0.57301706 0.5583366 0.54402304 0.5300679 0.5164628 0.5031997 0.49027038 0.47766706 0.46538195 0.4534075 0.44173625 0.43036085 0.41927418 0.40846926 0.39793918 0.38767722 0.3776768 0.36793157 0.35843515 0.3491814 0.34016433 0.33137804 0.32281676 0.3144749 0.30634698 0.29842764 0.29071158 0.28319377 0.27586916 0.2687329 0.26178023 0.2550065 0.24840714 0.24197778 0.2357141 0.22961184 0.22366694 0.21787538 0.21223323 0.20673668 0.20138204 0.19616565 0.19108398 0.1861336 0.18131112 0.17661327 0.17203686 0.16757876 0.16323595 0.15900545 0.15488437 0.1508699 0.14695932 0.14314994 0.13943914 0.13582438 0.13230322 0.12887321 0.12553202 0.122277334 0.11910695 0.11601867 0.11301039 0.11008003 0.10722559 0.10444511 0.10173666 0.09909839 0.096528485 0.09402519 0.091586754 0.08921152 0.08689786 0.08464416 0.08244888 0.0803105 0.078227565 0.076198615 0.074222274 0.07229717 0.07042198 0.0685954 0.06681619 0.06508311 0.06339497 0.061750602 0.060148872 0.05858868 0.057068948 0.055588625 0.05414669 0.05274215 0.051374037 0.050041404

</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="3.075" PeakHeight="244.303" Num="5" zHalfNm="228.637" Error="1.115">
-39.021 0.964 -0.951 0.494 -0.091
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="7" 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="6511.899" A="-1.49237481E11" B="4.6060952E7" C="-3553.9604" Error="0.00167"/>
<QuasiParabolic ID="2" StartDistance="6511.899" EndDistance="6543.799" A="0.0" B="-2703.568" C="0.45520568" Error="0.0514"/>
<QuasiParabolic ID="3" StartDistance="6543.799" EndDistance="6575.0" A="8.955229E10" B="-2.7422524E7" C="2099.352" Error="0.0514"/>
<QuasiParabolic ID="4" StartDistance="6575.0" EndDistance="6587.0" A="1.14227298E13" B="-3.47477683E9" C="264255.56" Error="0.0585"/>
<QuasiParabolic ID="5" StartDistance="6587.0" EndDistance="6602.0" A="2.42298609E13" B="-7.3633853E9" C="559428.5" Error="0.0419"/>
<QuasiParabolic ID="6" StartDistance="6602.0" EndDistance="6614.303" A="-4.1220882E13" B="1.24641638E10" C="-942203.5" Error="0.013"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="95.698" Depth="0.154"/>
<TopsideChapman PeakHeight="244.303" PeakDensity="117315.445" PeakScaleHeight="11.889" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
