<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-04-16 -106 21:55:00.000"
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 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.49 Confidence: 90% PACIFIC flags: One of F2 cusps was derived from the other</Comments>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.04.16 (106) 21:55:00</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">
FF202610604162155001291296E02000002520000000001107201000080205120000B05040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="5.175" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.592" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="18.589" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="3.225" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="3.225" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="5.475" 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="0.275" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="4.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="265.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.501" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="3.225" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="3.225" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="248.112" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="215.941" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="6.638" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="45.644" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="3.443" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="25.243" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="36.260" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="4.760" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="79">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
215.000 215.000 215.833 216.667 217.500 217.500 217.500 217.500 220.000 220.000 220.000 220.000 221.250 222.500 222.500 223.750 225.000 225.000 225.000 225.000 225.000 225.500 226.000 226.500 227.000 227.500 228.750 230.000 230.000 230.000 232.500 232.500 232.500 232.500 232.500 235.000 235.000 237.500 237.500 237.500 237.500 240.000 240.000 242.500 242.500 242.500 245.000 245.000 245.000 246.250 247.500 250.000 252.500 252.500 255.000 257.500 257.500 262.500 262.500 265.000 265.000 265.000 267.500 270.000 277.500 280.000 280.000 282.500 285.656 289.240 293.346 298.095 303.654 310.246 318.191 327.953 340.234 356.155 377.616
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 69 0 0 87 87 0 66 81 81 69 69 54 60 57 0 54 0 0 54 42 0 0 0 0 63 0 51 78 78 78 78 81 81 78 84 81 81 69 75 84 87 87 78 81 81 66 63 36 0 60 60 33 36 60 57 87 81 75 75 78 75 75 78 87 87 78 78 102 102 90 87 81 0 0 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 9.375 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 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 -3.125 -3.125 -3.125 -3.125 -3.125
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="576">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
91.636 92.0 93.0 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 134.5 135.0 136.0 137.0 138.0 139.0 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 183.5 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 248.112 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0 608.0 609.0 610.0 611.0 612.0 613.0 614.0 615.0 616.0 617.0 618.0 619.0 620.0 621.0 622.0 623.0 624.0 625.0 626.0 627.0 628.0 629.0 630.0 631.0 632.0 633.0 634.0 635.0 636.0 637.0 638.0 639.0 640.0 641.0 642.0 643.0 644.0 645.0 646.0 647.0 648.0 649.0 650.0 651.0 652.0 653.0 654.0 655.0 656.0 657.0 658.0 659.0 660.0 661.0 662.0 663.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.21805008 0.26303816 0.30033588 0.33151206 0.35807213 0.3810371 0.40106264 0.4186145 0.434009 0.4474816 0.45920834 0.46931955 0.47791645 0.48507792 0.49086502 0.4953226 0.49848425 0.500372 0.501 0.5006858 0.4998015 0.49835217 0.49629053 0.49363154 0.4903394 0.48644078 0.48191375 0.47669306 0.47083127 0.46431226 0.45694196 0.4489195 0.4399923 0.43032062 0.41967446 0.40800768 0.39523575 0.3813039 0.36598337 0.3491156 0.330391 0.30955988 0.28607714 0.267 0.267 0.267 0.267 0.267 0.267 0.267 0.267 0.267 0.267 0.267 0.267 0.267 0.267 0.267 0.267 0.267 0.267 0.267 0.267 0.267 0.267 0.267 0.267 0.267 0.267 0.276551 0.28610203 0.29565307 0.3052041 0.3147551 0.32430613 0.33385715 0.34340817 0.3529592 0.3625102 0.37206122 0.38161224 0.39116326 0.40071428 0.4102653 0.41981632 0.42936733 0.43891838 0.4484694 0.45802042 0.46757144 0.47712246 0.48667347 0.4962245 0.501 0.5156294 0.5487159 0.58745295 0.63207823 0.6821789 0.7367658 0.7946174 0.8547227 0.91645885 0.9795302 1.0439001 1.1096935 1.1771374 1.246543 1.3182654 1.3927389 1.4704202 1.5518763 1.6377746 1.7288418 1.8259648 1.9302006 2.0427406 2.164999 2.2984226 2.444455 2.6039062 2.7763298 2.958968 3.1462634 3.3309474 3.5064158 3.668396 3.8155024 3.948017 4.0671654 4.1744394 4.271326 4.3591204 4.438946 4.5117354 4.578309 4.6393294 4.6953435 4.746825 4.794193 4.837761 4.877842 4.9146786 4.948474 4.979434 5.007705 5.033437 5.056744 5.077733 5.096499 5.11312 5.1276593 5.1401777 5.150724 5.1593356 5.166048 5.1708837 5.17386 5.174991 5.175 5.1743793 5.1722174 5.168544 5.1633997 5.1568246 5.1488595 5.1395445 5.128921 5.1170287 5.1039085 5.0896 5.0741444 5.05758 5.039947 5.021284 5.00163 4.981022 4.959498 4.937095 4.91385 4.889798 4.8649745 4.8394146 4.8131514 4.7862186 4.758649 4.730474 4.7017255 4.6724334 4.6426277 4.6123376 4.5815916 4.550417 4.518841 4.4868894 4.4545884 4.4219623 4.3890357 4.355831 4.3223724 4.2886806 4.254778 4.2206845 4.18642 4.1520047 4.117457 4.082795 4.048036 4.013197 3.9782944 3.9433439 3.9083605 3.873359 3.8383532 3.803357 3.7683825 3.7334433 3.6985507 3.6637163 3.628951 3.5942657 3.5596702 3.5251741 3.490787 3.4565175 3.4223738 3.3883643 3.3544962 3.3207774 3.2872145 3.253814 3.220582 3.1875248 3.1546478 3.121956 3.0894551 3.0571494 3.0250432 2.9931407 2.961446 2.9299626 2.898694 2.8676436 2.836814 2.806208 2.7758281 2.7456768 2.7157562 2.686068 2.6566145 2.6273968 2.5984166 2.569675 2.5411732 2.5129123 2.4848928 2.457116 2.4295816 2.4022908 2.3752434 2.34844 2.3218806 2.295565 2.269493 2.2436647 2.2180798 2.1927378 2.1676383 2.1427805 2.118164 2.0937881 2.0696518 2.0457547 2.0220954 1.9986734 1.9754875 1.9525365 1.9298193 1.907335 1.8850822 1.8630596 1.8412662 1.8197002 1.7983606 1.7772459 1.7563547 1.7356853 1.7152367 1.695007 1.6749947 1.6551985 1.6356164 1.6162473 1.5970892 1.5781406 1.5594 1.5408654 1.5225356 1.5044085 1.4864826 1.4687563 1.4512277 1.4338952 1.4167571 1.3998117 1.3830572 1.3664919 1.3501142 1.3339223 1.3179144 1.3020889 1.2864438 1.2709779 1.255689 1.2405758 1.2256362 1.2108687 1.1962718 1.1818434 1.167582 1.153486 1.1395537 1.1257834 1.1121734 1.0987222 1.0854281 1.0722893 1.0593045 1.0464718 1.0337898 1.0212568 1.0088712 0.9966315 0.9845361 0.9725835 0.9607721 0.94910043 0.93756694 0.9261702 0.9149085 0.90378064 0.892785 0.8819201 0.8711846 0.8605769 0.8500958 0.83973974 0.8295073 0.8193972 0.809408 0.7995383 0.7897869 0.7801523 0.7706332 0.76122844 0.75193655 0.7427563 0.7336864 0.7247256 0.71587265 0.7071263 0.6984854 0.68994856 0.68151474 0.67318267 0.6649512 0.65681916 0.64878535 0.6408487 0.633008 0.6252622 0.61761016 0.6100508 0.602583 0.59520566 0.5879178 0.5807183 0.57360613 0.56658036 0.5596398 0.55278355 0.5460106 0.53931993 0.5327106 0.5261817 0.5197322 0.5133611 0.50706756 0.5008506 0.4947094 0.48864296 0.48265043 0.4767309 0.47088358 0.4651075 0.45940185 0.4537658 0.4481985 0.44269913 0.4372669 0.43190095 0.42660052 0.4213648 0.41619304 0.41108447 0.40603828 0.4010538 0.3961302 0.39126682 0.38646287 0.38171768 0.37703052 0.37240067 0.3678275 0.36331025 0.35884827 0.35444093 0.35008752 0.3457874 0.34153992 0.33734444 0.33320037 0.32910702 0.32506382 0.32107016 0.3171254 0.313229 0.30938035 0.30557886 0.30182394 0.29811504 0.29445165 0.29083315 0.287259 0.2837287 0.28024167 0.2767974 0.2733954 0.27003512 0.26671603 0.2634377 0.26019955 0.25700116 0.253842 0.2507216 0.2476395 0.24459523 0.24158831 0.23861831 0.23568475 0.23278722 0.22992525 0.22709842 0.22430629 0.22154844 0.21882446 0.21613392 0.21347642 0.21085157 0.20825894 0.20569815 0.20316882 0.20067056 0.19820297 0.1957657 0.19335838 0.19098061 0.18863207 0.18631238 0.18402117 0.18175814 0.1795229 0.17731513 0.17513448 0.17298062 0.17085324 0.168752 0.16667658 0.16462667 0.16260195 0.16060212 0.15862685 0.15667588 0.15474887 0.15284556 0.15096565 0.14910883 0.14727484 0.14546339 0.14367421 0.14190704 0.14016157 0.13843757 0.13673477 0.13505289 0.1333917 0.13175093 0.13013034 0.12852965 0.12694865 0.1253871 0.12384475 0.12232136 0.1208167 0.11933054 0.11786266 0.116412826 0.11498082 0.11356642 0.112169415 0.11078959 0.10942673 0.10808063 0.106751084 0.10543789 0.10414085 0.10285975 0.10159441 0.100344636 0.09911022 0.097890995 0.096686766 0.09549734 0.09432255 0.0931622 0.09201613 0.09088416 0.0897661 0.08866179 0.08757107 0.08649377 0.085429706 0.08437874 0.0833407 0.08231542 0.08130276 0.08030255 0.07931465 0.07833889 0.077375144 0.07642324 0.075483054 0.074554436 0.07363723 0.072731316 0.07183654 0.070952766 0.07007987 0.06921771 0.068366155 0.067525074 0.06669434 0.065873824 0.0650634 0.06426295 0.063472345 0.062691465 0.06192019 0.061158404 0.06040599 0.059662826 0.05892881 0.05820382 0.057487752 0.05678049 0.056081932 0.055391964 0.054710485 0.05403739 0.053372573 0.05271594 0.05206738 0.051426798 0.0507941 0.050169185

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.501" PeakHeight="110.0" Num="3" Error="0.0">
-22.321 4.356 -0.399
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.501" EndFrequency="5.175" PeakHeight="248.112" Num="5" zHalfNm="215.941" Error="1.818">
-75.898 19.254 -11.949 5.69 -1.709
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="11" EarthRadius="6370.0">
<QuasiParabolic ID="0" StartDistance="6459.998" EndDistance="6480.001" A="-1.09941332E12" B="3.39325088E8" C="-26182.242" Error="0.0119"/>
<QuasiParabolic ID="1" StartDistance="6480.0" EndDistance="6504.5" A="-5.30842419E11" B="1.63840256E8" C="-12641.743" Error="0.00497"/>
<QuasiParabolic ID="2" StartDistance="6504.5" EndDistance="6529.0" A="0.0" B="2098.2844" C="-0.25094634" Error="0.012"/>
<QuasiParabolic ID="3" StartDistance="6529.0" EndDistance="6552.0" A="1.2564616E11" B="-3.8723628E7" C="2983.5764" Error="0.0136"/>
<QuasiParabolic ID="4" StartDistance="6552.0" EndDistance="6559.0" A="9.448495E12" B="-2.88452608E9" C="220154.1" Error="0.0187"/>
<QuasiParabolic ID="5" StartDistance="6559.0" EndDistance="6563.0" A="1.0487271E13" B="-3.20127437E9" C="244300.17" Error="0.00539"/>
<QuasiParabolic ID="6" StartDistance="6563.0" EndDistance="6571.0" A="1.33147761E13" B="-4.06292454E9" C="309944.72" Error="0.0129"/>
<QuasiParabolic ID="7" StartDistance="6571.0" EndDistance="6575.0" A="3.8660875E13" B="-1.17774572E10" C="896958.3" Error="0.00461"/>
<QuasiParabolic ID="8" StartDistance="6575.0" EndDistance="6584.0" A="8.6778019E13" B="-2.64138527E10" C="2009992.1" Error="0.0153"/>
<QuasiParabolic ID="9" StartDistance="6584.0" EndDistance="6598.0" A="-5.5157635E13" B="1.67014748E10" C="-1264258.1" Error="0.00779"/>
<QuasiParabolic ID="10" StartDistance="6598.0" EndDistance="6618.112" A="-1.95691922E13" B="5.9138294E9" C="-446764.47" Error="0.0043"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="73.5" Depth="0.234"/>
<TopsideChapman PeakHeight="248.112" PeakDensity="332265.8" PeakScaleHeight="25.243" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
