<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-14 -104 04:35:00.000"
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 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 85% PACIFIC flags: Multiple candidates for F2o cusp, One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.14 (104) 04:35:00</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">
FF202610404140435001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.200" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.681" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="15.460" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.500" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.500" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.525" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="230.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="230.000" 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="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="4.075" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="280.530" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.500" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.500" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="245.362" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="224.584" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.393" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="29.793" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="1.463" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="15.817" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="28.460" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="2.470" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="69">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 2.875 2.9 2.925 2.95 2.975 3.0 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 3.775 3.8 3.825 3.85 3.875 3.9 3.925 3.95 3.975 4.0 4.025 4.05 4.075 4.1 4.125 4.15 4.175 4.2
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
230.000 230.000 230.000 230.000 232.500 232.500 232.500 232.500 232.500 235.000 235.000 235.000 235.000 235.000 235.000 235.000 237.500 237.500 237.500 237.500 238.750 240.000 240.000 240.000 240.000 242.500 242.500 242.500 242.500 245.000 245.000 245.000 247.500 247.500 247.500 250.000 250.000 250.337 250.692 251.068 251.466 251.887 252.336 252.813 253.322 253.866 254.448 255.074 255.748 256.476 257.265 258.122 259.056 260.080 261.206 262.450 263.833 265.377 267.115 269.084 271.333 273.928 276.955 280.530 284.819 290.058 296.603 305.012 316.211
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
0 0 0 69 72 69 0 66 69 66 0 69 72 48 48 69 0 0 0 81 0 81 81 0 0 93 93 0 0 81 84 93 90 90 90 0 0 87 93 78 84 99 93 96 96 96 96 81 0 0 0 0 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" >
-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 10.9375 -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 -1.5625 1.5625 -1.5625 -1.5625 -10.9375 -1.5625 -7.8125 -1.5625 -4.6875 10.9375 -1.5625 -10.9375 -1.5625 -1.5625 -10.9375 -1.5625 -1.5625 -1.5625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="403">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 245.362 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0
</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 0.35339895 0.35261247 0.3516065 0.35023698 0.34851307 0.34651887 0.34419376 0.34155348 0.33854687 0.33526585 0.33153415 0.32752004 0.32306805 0.31823066 0.3130061 0.3072951 0.30113927 0.29447237 0.28732234 0.2796049 0.2711702 0.2621697 0.25230387 0.24165411 0.23006094 0.21740833 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 0.2055 0.211 0.2165 0.222 0.2275 0.233 0.2385 0.244 0.2495 0.255 0.2605 0.266 0.2715 0.277 0.2825 0.288 0.2935 0.299 0.3045 0.31 0.3155 0.321 0.3265 0.332 0.3375 0.343 0.3485 0.354 0.3910084 0.43167105 0.47570178 0.52284086 0.5729041 0.6257863 0.68145615 0.73995 0.80135196 0.865813 0.93346494 1.0044917 1.0790817 1.1574428 1.2397556 1.3262105 1.4169592 1.5120827 1.611645 1.7156161 1.8238454 1.9360615 2.0518734 2.1707258 2.2919044 2.414596 2.5378847 2.6607883 2.782331 2.9015877 3.017707 3.1299362 3.2376676 3.340397 3.4377475 3.5294468 3.6153123 3.6952322 3.769142 3.837042 3.8989491 3.9549093 4.0049553 4.0491686 4.0875945 4.120296 4.147334 4.168752 4.18459 4.1948795 4.1996384 4.2 4.1993384 4.195697 4.1889915 4.179356 4.1669235 4.1518283 4.134204 4.114182 4.091894 4.0674686 4.041033 4.01271 3.9826221 3.950887 3.91762 3.8829324 3.8469326 3.8097248 3.77141 3.7320848 3.6918428 3.6507733 3.6089623 3.5664914 3.5234392 3.47988 3.4358852 3.3915222 3.3468552 3.3019447 3.2568486 3.2116208 3.166313 3.120973 3.0756469 3.030377 2.985203 2.9401627 2.895291 2.8506207 2.806182 2.7620032 2.71811 2.6745274 2.6312773 2.5883799 2.5458546 2.5037184 2.4619868 2.420674 2.3797934 2.3393562 2.2993727 2.259852 2.2208023 2.1822307 2.1441433 2.1065452 2.0694408 2.0328333 1.9967258 1.9611201 1.9260178 1.8914194 1.8573252 1.8237349 1.7906475 1.7580618 1.725976 1.694388 1.6632951 1.6326947 1.6025834 1.5729579 1.5438143 1.5151488 1.486957 1.4592346 1.431977 1.4051796 1.3788373 1.3529453 1.3274983 1.3024911 1.2779182 1.2537745 1.2300544 1.2067523 1.1838626 1.1613798 1.1392983 1.1176122 1.0963161 1.0754042 1.0548707 1.0347102 1.0149169 0.99548507 0.97640926 0.9576838 0.9393031 0.9212618 0.9035542 0.88617504 0.8691188 0.8523802 0.835954 0.8198348 0.80401754 0.78849703 0.77326816 0.75832593 0.74366546 0.7292817 0.7151699 0.7013253 0.68774307 0.6744187 0.6613475 0.648525 0.6359467 0.62360823 0.6115052 0.59963346 0.5879887 0.57656676 0.56536365 0.5543753 0.5435978 0.53302723 0.52265984 0.51249176 0.5025193 0.4927389 0.4831469 0.47373983 0.46451423 0.45546666 0.44659382 0.43789238 0.42935914 0.4209909 0.4127846 0.40473711 0.39684546 0.3891067 0.3815179 0.3740762 0.3667788 0.359623 0.35260603 0.3457253 0.33897817 0.3323621 0.32587457 0.3195131 0.3132753 0.3071588 0.30116126 0.2952804 0.28951395 0.2838597 0.27831554 0.27287933 0.26754895 0.2623224 0.25719765 0.25217277 0.24724579 0.24241483 0.23767804 0.2330336 0.2284797 0.22401461 0.21963659 0.21534397 0.21113509 0.20700832 0.20296206 0.19899476 0.19510488 0.19129093 0.18755141 0.1838849 0.18028997 0.17676522 0.17330928 0.16992085 0.16659857 0.16334118 0.16014741 0.15701602 0.1539458 0.15093556 0.14798412 0.14509034 0.1422531 0.13947129 0.13674384 0.1340697 0.1314478 0.12887715 0.12635672 0.123885565 0.1214627 0.119087204 0.11675813 0.11447458 0.11223567 0.11004053 0.107888296 0.10577814 0.103709236 0.10168078 0.09969199 0.097742066 0.09583028 0.09395587 0.09211811 0.09031628 0.08854969 0.08681764 0.08511945 0.083454475 0.08182206 0.08022156 0.07865237 0.07711386 0.07560544 0.07412651 0.07267651 0.07125487 0.06986103 0.068494454 0.0671546 0.06584095 0.064553 0.06329023 0.062052164 0.060838312 0.0596482 0.05848137 0.05733736 0.056215722 0.055116028 0.05403784 0.052980743 0.051944323 0.050928175

</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="4.2" PeakHeight="245.362" Num="5" zHalfNm="224.584" Error="0.555">
-53.761 3.823 -2.296 1.175 -0.303
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="9" 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="6508.0" A="-1.93482834E11" B="5.9716924E7" C="-4607.662" Error="0.00161"/>
<QuasiParabolic ID="2" StartDistance="6508.0" EndDistance="6536.0" A="0.0" B="-2556.6038" C="0.43286318" Error="0.0426"/>
<QuasiParabolic ID="3" StartDistance="6536.0" EndDistance="6559.0" A="1.01032206E11" B="-3.0982362E7" C="2375.2803" Error="0.0426"/>
<QuasiParabolic ID="4" StartDistance="6559.0" EndDistance="6560.0" A="-2.36425917E12" B="7.2074547E8" C="-54929.78" Error="6.83E-11"/>
<QuasiParabolic ID="5" StartDistance="6560.0" EndDistance="6565.0" A="3.19774497E12" B="-9.7498752E8" C="74318.16" Error="0.066"/>
<QuasiParabolic ID="6" StartDistance="6565.0" EndDistance="6575.0" A="9.4233145E12" B="-2.87158144E9" C="218765.53" Error="0.047"/>
<QuasiParabolic ID="7" StartDistance="6575.0" EndDistance="6598.0" A="2.64543519E13" B="-8.0521247E9" C="612723.2" Error="0.0445"/>
<QuasiParabolic ID="8" StartDistance="6598.0" EndDistance="6615.362" A="-4.1763767E13" B="1.26262979E10" C="-954298.8" Error="0.0113"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="84.0" Depth="0.154"/>
<TopsideChapman PeakHeight="245.362" PeakDensity="218858.56" PeakScaleHeight="15.817" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
