<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-20 -110 04:15:00.000"
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: 100%</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.20 (110) 04:15:00</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">
FF202611004200415001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="2.825" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.706" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="10.468" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.025" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.025" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="3.175" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="225.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="225.000" 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="0.125" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="2.675" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="264.932" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.025" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.025" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="238.479" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="216.657" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.416" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="31.170" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="0.709" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="16.895" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="28.210" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.120" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="33">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.025 2.05 2.075 2.1 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 2.8 2.825
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
225.000 226.250 227.500 227.500 230.000 230.000 230.000 232.500 232.500 235.000 235.000 235.000 237.500 240.000 240.000 242.500 245.000 242.500 247.500 250.000 250.000 251.673 253.580 255.775 258.329 261.337 264.932 269.305 274.739 281.673 290.826 303.470 322.070
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
75 0 63 63 78 78 81 78 69 66 54 54 57 54 69 69 81 84 72 72 75 75 75 75 72 75 75 75 72 72 69 63 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 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="395">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 136.83333 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 163.66667 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 190.5 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 238.479 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0
</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 0.35332385 0.35253775 0.3513833 0.34986797 0.34800196 0.34587008 0.3433416 0.34043694 0.33717975 0.3335292 0.3294542 0.3250611 0.3201454 0.31483623 0.30908883 0.30277678 0.29597685 0.28861925 0.2806141 0.2719544 0.2625736 0.25233817 0.24117032 0.22898808 0.2156547 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 0.20191304 0.20765217 0.2133913 0.21913044 0.22486956 0.2306087 0.23634782 0.24208696 0.24782608 0.25356522 0.25930434 0.26504347 0.27078262 0.27652174 0.28226086 0.288 0.29373914 0.29947826 0.3052174 0.3109565 0.31669566 0.32243478 0.3281739 0.33391306 0.33965218 0.3453913 0.35113043 0.354 0.3666734 0.39542097 0.42896226 0.4671407 0.50932497 0.5546502 0.60232735 0.6518606 0.7030174 0.7557383 0.8101095 0.86631864 0.92458355 0.985146 1.0482984 1.1143391 1.183511 1.2560725 1.3322015 1.4119483 1.4951972 1.5815564 1.6703521 1.7606119 1.8510432 1.9402711 2.0269403 2.1098688 2.1881952 2.261412 2.3292632 2.3917146 2.44889 2.501 2.5482929 2.5910554 2.6295297 2.6639733 2.694608 2.721643 2.745246 2.7655787 2.782766 2.796918 2.8081257 2.8164577 2.8219657 2.824682 2.825 2.8247395 2.8228064 2.8190503 2.813545 2.8063638 2.797581 2.78727 2.7755046 2.762357 2.7478995 2.7322028 2.715336 2.6973681 2.6783652 2.658393 2.6375146 2.6157918 2.5932846 2.5700512 2.5461476 2.521628 2.4965446 2.470948 2.4448862 2.4184062 2.3915522 2.3643668 2.3368907 2.309163 2.2812207 2.2530992 2.224832 2.1964512 2.1679866 2.1394672 2.1109204 2.0823712 2.0538442 2.025362 1.9969463 1.9686168 1.9403927 1.9122915 1.8843299 1.856523 1.8288854 1.8014305 1.7741704 1.7471167 1.7202799 1.6936699 1.6672953 1.6411645 1.6152849 1.5896631 1.5643053 1.539217 1.5144029 1.4898673 1.4656143 1.4416469 1.417968 1.39458 1.371485 1.3486843 1.3261793 1.3039707 1.2820592 1.2604449 1.2391278 1.2181073 1.1973834 1.1769547 1.1568205 1.1369796 1.1174302 1.0981711 1.0792004 1.0605161 1.0421163 1.0239986 1.006161 0.9886009 0.9713159 0.95430344 0.93756074 0.9210852 0.9048739 0.88892406 0.8732328 0.857797 0.84261394 0.82768035 0.81299335 0.7985497 0.78434646 0.77038044 0.7566485 0.74314755 0.72987443 0.7168261 0.7039992 0.6913909 0.6789979 0.6668171 0.6548455 0.6430799 0.6315173 0.6201546 0.6089889 0.5980171 0.5872362 0.5766433 0.5662355 0.55600977 0.5459633 0.5360933 0.5263969 0.5168712 0.50751364 0.49832138 0.48929173 0.48042202 0.47170964 0.46315196 0.45474643 0.44649053 0.4383817 0.4304175 0.42259553 0.41491333 0.40736854 0.39995888 0.39268196 0.38553554 0.37851742 0.37162536 0.36485717 0.35821074 0.35168397 0.34527475 0.33898106 0.33280087 0.32673222 0.32077312 0.3149217 0.30917606 0.3035343 0.29799464 0.29255524 0.28721437 0.28197026 0.2768212 0.2717655 0.2668015 0.2619276 0.2571422 0.25244367 0.2478305 0.24330115 0.23885414 0.23448798 0.23020124 0.22599249 0.22186032 0.21780337 0.2138203 0.20990975 0.20607044 0.20230107 0.1986004 0.19496718 0.1914002 0.18789826 0.18446018 0.18108483 0.17777105 0.17451774 0.17132379 0.16818815 0.16510975 0.16208756 0.15912054 0.15620773 0.1533481 0.15054072 0.14778464 0.1450789 0.14242262 0.13981487 0.13725479 0.1347415 0.13227417 0.12985194 0.127474 0.12513953 0.122847766 0.12059791 0.118389204 0.1162209 0.11409225 0.11200256 0.10995109 0.10793715 0.10596006 0.10401916 0.10211377 0.10024325 0.098406956 0.09660428 0.094834596 0.0930973 0.09139181 0.08971754 0.08807392 0.08646038 0.08487639 0.0833214 0.08179487 0.08029631 0.078825176 0.07738098 0.07596323 0.074571446 0.07320514 0.07186387 0.070547156 0.069254555 0.06798563 0.06673994 0.06551707 0.0643166 0.06313811 0.061981216 0.060845505 0.0597306 0.058636118 0.057561684 0.05650693 0.055471502 0.05445504 0.053457197 0.052477635 0.051516015 0.050572015

</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="2.825" PeakHeight="238.479" Num="5" zHalfNm="216.657" Error="1.214">
-51.774 6.583 -4.052 1.964 -0.7
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="8" 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="6506.833" A="-2.10612257E11" B="6.5003784E7" C="-5015.5986" Error="0.00148"/>
<QuasiParabolic ID="2" StartDistance="6506.833" EndDistance="6533.667" A="0.0" B="2016.889" C="-0.26994556" Error="0.0313"/>
<QuasiParabolic ID="3" StartDistance="6533.667" EndDistance="6552.0" A="3.86549248E9" B="-1309076.9" C="109.84692" Error="0.0327"/>
<QuasiParabolic ID="4" StartDistance="6552.0" EndDistance="6560.0" A="2.83924922E11" B="-8.6797304E7" C="6633.674" Error="0.0219"/>
<QuasiParabolic ID="5" StartDistance="6560.0" EndDistance="6573.0" A="7.1510838E12" B="-2.18044339E9" C="166210.34" Error="0.0343"/>
<QuasiParabolic ID="6" StartDistance="6573.0" EndDistance="6587.0" A="1.71921816E13" B="-5.2356992E9" C="398619.88" Error="0.0204"/>
<QuasiParabolic ID="7" StartDistance="6587.0" EndDistance="6608.479" A="-1.58737042E13" B="4.8040417E9" C="-363467.62" Error="0.00505"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="80.5" Depth="0.154"/>
<TopsideChapman PeakHeight="238.479" PeakDensity="99015.195" PeakScaleHeight="16.895" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
