<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-07 -097 06:30:00.000"
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: 95% PACIFIC flags: Multiple candidates for F2x cusp</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.07 (097) 06:30:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.56" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-41.19" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-15.97" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="78.74007" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202609704070630001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="5.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.696" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="20.145" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.825" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="215.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="215.000" 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="0.050" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="5.175" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="267.500" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="240.137" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="215.298" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.190" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="35.361" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="2.885" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="18.891" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="31.030" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.280" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="129">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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 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 4.225 4.25 4.275 4.3 4.325 4.35 4.375 4.4 4.425 4.45 4.475 4.5 4.525 4.55 4.575 4.6 4.625 4.65 4.675 4.7 4.725 4.75 4.775 4.8 4.825 4.85 4.875 4.9 4.925 4.95 4.975 5.0 5.025 5.05 5.075 5.1 5.125 5.15 5.175 5.2 5.225 5.25 5.275 5.3 5.325 5.35 5.375 5.4 5.425 5.45
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
215.000 215.417 215.833 216.250 216.667 217.083 217.500 217.500 217.500 217.500 217.500 217.500 217.500 217.500 217.500 217.500 217.500 217.500 217.500 217.750 218.000 218.250 218.500 218.750 219.000 219.250 219.500 219.750 220.000 220.000 220.000 220.000 220.000 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 222.500 225.000 225.000 225.000 225.417 225.833 226.250 226.667 227.083 227.500 227.500 227.500 227.500 227.500 227.500 227.500 227.875 228.250 228.625 229.000 229.375 229.750 230.125 230.500 230.875 231.250 231.625 232.000 232.375 232.750 233.125 233.500 233.875 234.250 234.625 235.000 235.625 236.250 236.875 237.500 237.500 237.500 237.500 240.000 240.625 241.250 241.875 242.500 242.500 242.500 243.333 244.167 245.000 245.833 246.667 247.500 248.333 249.167 250.000 250.833 251.667 252.500 253.333 254.167 255.000 255.833 256.667 257.500 258.333 259.167 260.000 262.500 262.500 265.000 266.250 267.500 269.343 271.465 273.934 276.841 280.316 284.542 289.793 296.494 305.339 317.557 335.529
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
66 0 0 0 0 0 75 0 72 0 48 51 0 60 0 60 0 0 45 0 0 0 0 0 0 0 0 0 48 69 0 0 54 81 0 0 93 93 96 72 0 0 54 78 75 78 0 0 0 0 0 78 0 0 0 78 0 66 0 0 0 0 0 0 0 78 78 0 0 0 0 0 0 0 0 0 0 102 0 0 0 90 96 0 102 78 0 0 0 75 0 102 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 66 66 66 69 0 69 72 108 111 96 96 108 102 0 99 0 66
</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 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 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 1.5625 -1.5625 1.5625 -1.5625 -4.6875 -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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="464">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 134.5 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 183.5 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 240.137 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0
</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 0.35317364 0.35223874 0.35086352 0.34905878 0.3468389 0.3442219 0.3411586 0.33767787 0.33367795 0.32927206 0.3243802 0.3189446 0.3129916 0.30645373 0.29930657 0.29149976 0.28296635 0.27368933 0.26350668 0.2523124 0.24007721 0.22657463 0.21160045 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 0.20628572 0.21257143 0.21885714 0.22514285 0.23142858 0.23771429 0.244 0.2502857 0.25657144 0.26285714 0.26914287 0.27542856 0.2817143 0.288 0.2942857 0.30057144 0.30685714 0.31314287 0.31942856 0.3257143 0.332 0.3382857 0.34457144 0.35085714 0.354 0.3780955 0.42401746 0.4690635 0.51455134 0.5612617 0.60979587 0.6606455 0.7142586 0.77111953 0.8317063 0.89654714 0.96621835 1.0413574 1.1226876 1.2109361 1.3069578 1.4116466 1.5257983 1.650241 1.7855077 1.9318391 2.0888615 2.255544 2.4300945 2.6100833 2.7926483 2.974952 3.1543415 3.3288207 3.4968035 3.6573248 3.809851 3.954105 4.0900993 4.2179637 4.3379226 4.45024 4.5552106 4.653133 4.7442784 4.828929 4.90734 4.9797516 5.046368 5.1073785 5.1629624 5.213287 5.2584796 5.298662 5.333947 5.364434 5.3901863 5.411284 5.4277706 5.439697 5.4470844 5.449958 5.45 5.4488997 5.444931 5.438165 5.4287047 5.4166512 5.4021063 5.385172 5.3659496 5.34454 5.321044 5.2955585 5.2681823 5.2390103 5.208137 5.1756544 5.141653 5.1062217 5.0694456 5.031409 4.9921937 4.951879 4.910542 4.868257 4.8250966 4.7811303 4.7364254 4.6910477 4.645059 4.59852 4.551488 4.5040193 4.456167 4.4079823 4.359514 4.310809 4.2619123 4.212866 4.1637106 4.1144857 4.0652275 4.0159707 3.9667494 3.9175944 3.8685358 3.8196015 3.7708185 3.7222116 3.6738048 3.6256201 3.5776787 3.5299997 3.4826021 3.4355025 3.3887174 3.3422616 3.2961488 3.250392 3.205003 3.1599927 3.1153715 3.0711484 3.0273316 2.9839292 2.9409478 2.8983939 2.8562727 2.8145893 2.773348 2.7325528 2.6922066 2.6523123 2.612872 2.5738873 2.5353599 2.4972904 2.4596794 2.422527 2.3858333 2.3495975 2.3138187 2.278496 2.243628 2.2092128 2.1752489 2.1417341 2.108666 2.076042 2.0438597 2.012116 1.980808 1.9499326 1.9194864 1.8894662 1.8598683 1.8306891 1.801925 1.7735721 1.7456266 1.7180845 1.6909417 1.6641943 1.6378382 1.6118691 1.586283 1.5610754 1.5362422 1.5117792 1.487682 1.4639462 1.4405677 1.4175421 1.3948649 1.372532 1.3505391 1.3288816 1.3075556 1.2865565 1.2658801 1.2455221 1.2254785 1.205745 1.1863172 1.1671913 1.1483628 1.1298277 1.1115822 1.0936219 1.0759429 1.0585413 1.0414132 1.0245545 1.0079615 0.9916303 0.97555715 0.95973825 0.9441699 0.9288483 0.9137701 0.89893144 0.88432884 0.8699588 0.85581785 0.84190255 0.82820946 0.8147353 0.8014767 0.7884304 0.77559316 0.7629618 0.7505332 0.7383042 0.72627175 0.71443284 0.7027845 0.6913237 0.6800476 0.6689533 0.658038 0.6472989 0.63673323 0.6263383 0.6161114 0.60604995 0.5961513 0.5864129 0.57683223 0.56740683 0.5581342 0.54901195 0.54003763 0.53120905 0.5225237 0.5139795 0.50557405 0.49730518 0.48917076 0.4811686 0.47329658 0.46555266 0.45793477 0.45044088 0.44306904 0.43581724 0.42868358 0.42166618 0.41476312 0.4079726 0.40129283 0.39472198 0.3882583 0.38190007 0.3756456 0.36949322 0.36344126 0.3574881 0.35163215 0.34587184 0.3402056 0.33463195 0.32914934 0.32375634 0.31845146 0.3132333 0.30810043 0.30305147 0.29808506 0.2931999 0.2883946 0.2836679 0.27901852 0.2744452 0.2699467 0.2655218 0.2611693 0.25688806 0.25267684 0.24853459 0.24446014 0.24045236 0.23651022 0.2326326 0.22881849 0.22506683 0.2213766 0.2177468 0.21417645 0.21066457 0.20721023 0.20381247 0.20047034 0.197183 0.19394949 0.19076896 0.18764055 0.18456338 0.18153664 0.17855951 0.17563117 0.1727508 0.16991763 0.1671309 0.16438985 0.16169372 0.15904178 0.1564333 0.15386759 0.15134393 0.14886163 0.14642003 0.14401846 0.14165626 0.13933279 0.1370474 0.13479948 0.13258842 0.1304136 0.12827446 0.12617038 0.124100804 0.12206516 0.120062895 0.11809346 0.116156325 0.11425095 0.112376824 0.11053343 0.108720265 0.106936835 0.10518265 0.103457235 0.10176011 0.100090824 0.09844891 0.09683393 0.095245436 0.09368299 0.09214617 0.090634555 0.08914774 0.0876853 0.086246856 0.084832 0.08344035 0.08207153 0.080725156 0.07940087 0.0780983 0.076817095 0.07555691 0.074317396 0.07309821 0.07189902 0.07071951 0.069559336 0.068418205 0.06729578 0.06619178 0.06510588 0.06403779 0.06298723 0.061953895 0.060937516 0.05993781 0.0589545 0.05798732 0.05703601 0.0561003 0.055179942 0.054274682 0.053384274 0.05250847 0.051647034 0.05079973

</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="5.45" PeakHeight="240.137" Num="5" zHalfNm="215.298" Error="0.276">
-62.903 10.126 -5.956 2.207 -0.111
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="12" 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="6504.5" A="-2.52482355E11" B="7.7926656E7" C="-6012.734" Error="0.00135"/>
<QuasiParabolic ID="2" StartDistance="6504.5" EndDistance="6529.0" A="0.0" B="-442.61057" C="0.108055696" Error="0.00661"/>
<QuasiParabolic ID="3" StartDistance="6529.0" EndDistance="6553.0" A="7.9804408E10" B="-2.454904E7" C="1887.9209" Error="0.00661"/>
<QuasiParabolic ID="4" StartDistance="6553.0" EndDistance="6554.0" A="2.81271536E13" B="-8.5847045E9" C="655035.75" Error="9.46E-10"/>
<QuasiParabolic ID="5" StartDistance="6554.0" EndDistance="6558.0" A="3.74970332E12" B="-1.14575104E9" C="87523.28" Error="0.00457"/>
<QuasiParabolic ID="6" StartDistance="6558.0" EndDistance="6563.0" A="9.0024255E12" B="-2.74767923E9" C="209658.7" Error="0.00466"/>
<QuasiParabolic ID="7" StartDistance="6563.0" EndDistance="6567.0" A="1.97118279E13" B="-6.0112486E9" C="458292.66" Error="0.00192"/>
<QuasiParabolic ID="8" StartDistance="6567.0" EndDistance="6571.0" A="3.8333707E13" B="-1.16825999E10" C="890099.5" Error="0.00289"/>
<QuasiParabolic ID="9" StartDistance="6571.0" EndDistance="6581.0" A="7.7203295E13" B="-2.35132457E10" C="1790316.0" Error="0.00537"/>
<QuasiParabolic ID="10" StartDistance="6581.0" EndDistance="6589.0" A="-1.55213764E13" B="4.666263E9" C="-350658.62" Error="0.00376"/>
<QuasiParabolic ID="11" StartDistance="6589.0" EndDistance="6610.137" A="-4.6400256E13" B="1.40391199E10" C="-1061909.0" Error="0.0023"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="73.5" Depth="0.154"/>
<TopsideChapman PeakHeight="240.137" PeakDensity="368517.38" PeakScaleHeight="18.891" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
