<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-17 -137 21:50:00.000"
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" >
2026.05.17 (137) 21:50:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.21" 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">
FF202613705172150001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="3.725" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.760" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="14.005" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.075" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.075" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.750" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="3.425" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="245.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.390" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.075" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.075" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="235.798" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="217.119" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="5.618" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="26.739" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.045" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="14.215" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="25.980" 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" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
222.500 222.500 222.500 225.000 227.500 227.500 227.500 230.000 232.500 235.000 237.500 237.500 240.000 242.500 245.000 250.000 252.500 257.500 262.500 270.000 272.500 278.351 284.762 291.817 299.618 308.291 317.990
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 0 0 75 72 0 0 0 0 90 0 0 78 78 0 0 0 0 66 66 66 0 0 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 9.375 -3.125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="367">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
92.827 93.0 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 136.25 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 162.5 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 188.75 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 235.798 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.20534606 0.23361783 0.257728 0.27843183 0.2963785 0.31204113 0.32576624 0.3377944 0.34831423 0.35746098 0.3653435 0.37204036 0.37761548 0.3821183 0.38558578 0.388044 0.38951194 0.39 0.38976806 0.3891658 0.38819593 0.3866797 0.38490224 0.38259998 0.3798806 0.37676257 0.37309438 0.36907974 0.36449775 0.35947767 0.35390997 0.34778515 0.3411103 0.33384117 0.32590088 0.31720215 0.30778822 0.29755148 0.28635785 0.27408728 0.26059383 0.24577083 0.22927724 0.21106474 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 0.20361905 0.21085714 0.21809524 0.22533333 0.23257142 0.23980953 0.24704762 0.25428572 0.2615238 0.2687619 0.276 0.28323808 0.2904762 0.2977143 0.30495238 0.31219047 0.31942856 0.32666665 0.33390477 0.34114286 0.34838095 0.35561904 0.36285713 0.37009525 0.37733334 0.38457143 0.39 0.40015218 0.44144896 0.48404905 0.52818584 0.57409346 0.62198615 0.6720806 0.72459227 0.77973735 0.8377564 0.89887285 0.9633206 1.0313449 1.1031603 1.1789918 1.2590207 1.34342 1.4322714 1.5256094 1.623353 1.725299 1.831103 1.9402817 2.0521533 2.165921 2.2806823 2.395437 2.5091689 2.6208897 2.72969 2.834725 2.935291 3.0308475 3.1209002 3.205151 3.2833157 3.3552403 3.420824 3.4800012 3.5327425 3.5790584 3.6189466 3.6524441 3.6795728 3.7003622 3.7148316 3.722998 3.725 3.7249267 3.722445 3.7165556 3.7074206 3.6952035 3.680068 3.662177 3.6416917 3.618771 3.593572 3.5662467 3.5369456 3.5058134 3.4729912 3.4386156 3.4028177 3.3657246 3.3274577 3.2881334 3.247863 3.2067533 3.1649048 3.1224139 3.0793715 3.0358644 2.9919736 2.9477763 2.9033449 2.8587472 2.8140473 2.7693048 2.7245755 2.6799116 2.6353612 2.5909698 2.5467787 2.5028265 2.459149 2.4157784 2.372745 2.3300765 2.2877975 2.245931 2.204497 2.1635146 2.1230001 2.0829685 2.0434325 2.0044038 1.9658921 1.9279062 1.8904531 1.853539 1.8171688 1.7813462 1.746074 1.7113541 1.6771877 1.643575 1.6105152 1.5780076 1.5460502 1.5146407 1.4837762 1.4534533 1.4236684 1.394417 1.3656949 1.337497 1.3098183 1.2826531 1.2559959 1.2298408 1.2041816 1.1790122 1.1543261 1.1301168 1.1063778 1.0831023 1.0602835 1.0379148 1.015989 0.9944992 0.9734387 0.95280045 0.9325775 0.91276294 0.8933499 0.8743314 0.85570073 0.83745104 0.8195755 0.80206746 0.7849203 0.7681273 0.75168216 0.7355782 0.7198091 0.70436865 0.68925047 0.6744485 0.6599566 0.64576876 0.63187915 0.61828184 0.6049712 0.5919415 0.57918715 0.5667027 0.55448276 0.542522 0.53081524 0.51935726 0.5081431 0.4971678 0.4864264 0.4759142 0.46562645 0.45555854 0.44570595 0.4360642 0.42662895 0.4173959 0.4083608 0.3995196 0.3908682 0.38240263 0.374119 0.3660135 0.35808238 0.35032195 0.34272864 0.3352989 0.32802927 0.32091635 0.31395686 0.30714753 0.30048513 0.29396656 0.28758878 0.28134876 0.27524358 0.26927036 0.26342627 0.25770858 0.25211453 0.24664153 0.24128695 0.23604827 0.230923 0.22590871 0.221003 0.21620356 0.21150808 0.20691435 0.20242016 0.19802338 0.19372192 0.1895137 0.18539672 0.18136902 0.17742868 0.1735738 0.16980255 0.1661131 0.1625037 0.15897264 0.15551819 0.15213871 0.14883257 0.1455982 0.14243406 0.13933858 0.13631032 0.13334782 0.13044964 0.1276144 0.12484071 0.122127265 0.11947276 0.116875894 0.11433545 0.11185018 0.1094189 0.10704043 0.10471363 0.102437384 0.10021059 0.098032184 0.0959011 0.093816325 0.091776855 0.089781694 0.08782989 0.0859205 0.08405261 0.0822253 0.08043771 0.078688964 0.07697823 0.07530468 0.0736675 0.0720659 0.07049911 0.068966374 0.06746696 0.066000134 0.06456519 0.06316144 0.0617882 0.060444813 0.059130628 0.05784501 0.056587342 0.05535701 0.054153427 0.052976005 0.051824182 0.050697397

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.39" PeakHeight="110.0" Num="3" Error="0.0">
-19.938 2.967 -0.202
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.39" EndFrequency="3.725" PeakHeight="235.798" Num="5" zHalfNm="217.119" Error="2.01">
-47.534 1.423 -1.733 0.905 -0.109
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="8" EarthRadius="6370.0">
<QuasiParabolic ID="0" StartDistance="6460.0127" EndDistance="6480.001" A="-6.6732602E11" B="2.05964816E8" C="-15892.194" Error="0.0028"/>
<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6506.25" A="-2.89286849E11" B="8.9286064E7" C="-6889.2046" Error="0.00256"/>
<QuasiParabolic ID="2" StartDistance="6506.25" EndDistance="6532.5" A="0.0" B="4830.719" C="-0.7025176" Error="0.0757"/>
<QuasiParabolic ID="3" StartDistance="6532.5" EndDistance="6554.0" A="-1.40510341E10" B="4117729.0" C="-301.04013" Error="0.0757"/>
<QuasiParabolic ID="4" StartDistance="6554.0" EndDistance="6559.0" A="1.80671362E12" B="-5.5150163E8" C="42086.766" Error="0.0641"/>
<QuasiParabolic ID="5" StartDistance="6559.0" EndDistance="6575.0" A="1.07023895E13" B="-3.26401126E9" C="248864.45" Error="0.0972"/>
<QuasiParabolic ID="6" StartDistance="6575.0" EndDistance="6590.0" A="3.06001027E13" B="-9.3165476E9" C="709133.4" Error="0.0476"/>
<QuasiParabolic ID="7" StartDistance="6590.0" EndDistance="6605.798" A="-4.0945324E13" B="1.23967826E10" C="-938312.06" Error="0.0154"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="78.75" Depth="0.19"/>
<TopsideChapman PeakHeight="235.798" PeakDensity="172154.16" PeakScaleHeight="14.215" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
