<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-05-04 -124 01:50:00.000"
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="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: 80% PACIFIC flags: Multiple candidates for F2x cusp, 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" >
2026.05.04 (124) 01:50:00</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">
FF202612405040150001291297002000002515000000001107301000080205120000B05040001
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="4.500" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.445" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="15.504" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.975" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.975" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="4.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="237.500" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="237.500" 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="0.250" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="4.250" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="301.221" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.975" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.975" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="267.570" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="237.124" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="3.254" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="43.284" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="2.460" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="23.695" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="34.640" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="4.560" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="62">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
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
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
237.500 237.500 237.500 237.500 237.500 240.000 240.000 240.000 240.000 240.000 242.500 242.500 242.500 242.500 245.000 245.000 245.000 247.500 247.500 247.500 250.000 250.000 250.000 250.000 252.500 252.500 255.000 255.000 257.500 257.500 258.750 260.000 260.000 262.500 262.500 265.000 265.000 265.000 270.000 272.500 275.000 275.000 277.500 280.000 282.500 285.000 287.500 289.709 292.145 294.844 297.850 301.221 305.025 309.354 314.322 320.083 326.845 334.890 344.625 356.643 371.854 391.727
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
69 72 84 87 96 93 96 99 99 96 99 99 84 84 111 111 102 99 99 99 78 78 81 78 78 81 78 84 75 78 0 57 60 60 87 90 90 96 99 96 84 84 90 90 99 99 102 102 99 105 90 87 84 84 84 0 84 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 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
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.32" Type="vertical" >
<Tabulated Num="558">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 94.0 95.0 96.0 97.0 98.0 99.0 100.0 101.0 102.0 103.0 104.0 105.0 106.0 107.0 108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0 124.0 125.0 126.0 127.0 128.0 129.0 130.0 131.0 132.0 133.0 134.0 135.0 136.0 137.0 138.0 139.0 139.75 140.0 141.0 142.0 143.0 144.0 145.0 146.0 147.0 148.0 149.0 150.0 151.0 152.0 153.0 154.0 155.0 156.0 157.0 158.0 159.0 160.0 161.0 162.0 163.0 164.0 165.0 166.0 167.0 168.0 169.0 169.5 170.0 171.0 172.0 173.0 174.0 175.0 176.0 177.0 178.0 179.0 180.0 181.0 182.0 183.0 184.0 185.0 186.0 187.0 188.0 189.0 190.0 191.0 192.0 193.0 194.0 195.0 196.0 197.0 198.0 199.0 199.25 200.0 201.0 202.0 203.0 204.0 205.0 206.0 207.0 208.0 209.0 210.0 211.0 212.0 213.0 214.0 215.0 216.0 217.0 218.0 219.0 220.0 221.0 222.0 223.0 224.0 225.0 226.0 227.0 228.0 229.0 230.0 231.0 232.0 233.0 234.0 235.0 236.0 237.0 238.0 239.0 240.0 241.0 242.0 243.0 244.0 245.0 246.0 247.0 248.0 249.0 250.0 251.0 252.0 253.0 254.0 255.0 256.0 257.0 258.0 259.0 260.0 261.0 262.0 263.0 264.0 265.0 266.0 267.0 267.57 268.0 269.0 270.0 271.0 272.0 273.0 274.0 275.0 276.0 277.0 278.0 279.0 280.0 281.0 282.0 283.0 284.0 285.0 286.0 287.0 288.0 289.0 290.0 291.0 292.0 293.0 294.0 295.0 296.0 297.0 298.0 299.0 300.0 301.0 302.0 303.0 304.0 305.0 306.0 307.0 308.0 309.0 310.0 311.0 312.0 313.0 314.0 315.0 316.0 317.0 318.0 319.0 320.0 321.0 322.0 323.0 324.0 325.0 326.0 327.0 328.0 329.0 330.0 331.0 332.0 333.0 334.0 335.0 336.0 337.0 338.0 339.0 340.0 341.0 342.0 343.0 344.0 345.0 346.0 347.0 348.0 349.0 350.0 351.0 352.0 353.0 354.0 355.0 356.0 357.0 358.0 359.0 360.0 361.0 362.0 363.0 364.0 365.0 366.0 367.0 368.0 369.0 370.0 371.0 372.0 373.0 374.0 375.0 376.0 377.0 378.0 379.0 380.0 381.0 382.0 383.0 384.0 385.0 386.0 387.0 388.0 389.0 390.0 391.0 392.0 393.0 394.0 395.0 396.0 397.0 398.0 399.0 400.0 401.0 402.0 403.0 404.0 405.0 406.0 407.0 408.0 409.0 410.0 411.0 412.0 413.0 414.0 415.0 416.0 417.0 418.0 419.0 420.0 421.0 422.0 423.0 424.0 425.0 426.0 427.0 428.0 429.0 430.0 431.0 432.0 433.0 434.0 435.0 436.0 437.0 438.0 439.0 440.0 441.0 442.0 443.0 444.0 445.0 446.0 447.0 448.0 449.0 450.0 451.0 452.0 453.0 454.0 455.0 456.0 457.0 458.0 459.0 460.0 461.0 462.0 463.0 464.0 465.0 466.0 467.0 468.0 469.0 470.0 471.0 472.0 473.0 474.0 475.0 476.0 477.0 478.0 479.0 480.0 481.0 482.0 483.0 484.0 485.0 486.0 487.0 488.0 489.0 490.0 491.0 492.0 493.0 494.0 495.0 496.0 497.0 498.0 499.0 500.0 501.0 502.0 503.0 504.0 505.0 506.0 507.0 508.0 509.0 510.0 511.0 512.0 513.0 514.0 515.0 516.0 517.0 518.0 519.0 520.0 521.0 522.0 523.0 524.0 525.0 526.0 527.0 528.0 529.0 530.0 531.0 532.0 533.0 534.0 535.0 536.0 537.0 538.0 539.0 540.0 541.0 542.0 543.0 544.0 545.0 546.0 547.0 548.0 549.0 550.0 551.0 552.0 553.0 554.0 555.0 556.0 557.0 558.0 559.0 560.0 561.0 562.0 563.0 564.0 565.0 566.0 567.0 568.0 569.0 570.0 571.0 572.0 573.0 574.0 575.0 576.0 577.0 578.0 579.0 580.0 581.0 582.0 583.0 584.0 585.0 586.0 587.0 588.0 589.0 590.0 591.0 592.0 593.0 594.0 595.0 596.0 597.0 598.0 599.0 600.0 601.0 602.0 603.0 604.0 605.0 606.0 607.0 608.0 609.0 610.0 611.0 612.0 613.0 614.0 615.0 616.0 617.0 618.0 619.0 620.0 621.0 622.0 623.0 624.0 625.0 626.0 627.0 628.0 629.0 630.0 631.0 632.0 633.0 634.0 635.0 636.0 637.0 638.0 639.0 640.0 641.0 642.0 643.0 644.0 645.0 646.0
</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 0.3538872 0.35347393 0.352762 0.35182965 0.3506064 0.3491724 0.34738788 0.34533682 0.34299496 0.34037665 0.33746356 0.3342082 0.33063674 0.3267138 0.32253745 0.31796023 0.31297803 0.30765462 0.30189866 0.29567927 0.28909197 0.28191414 0.2741947 0.26597098 0.25704813 0.24743798 0.23701459 0.22570056 0.21345264 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 0.2 0.2 0.2 0.20258823 0.2077647 0.21294117 0.21811765 0.22329412 0.2284706 0.23364706 0.23882353 0.244 0.24917647 0.25435293 0.2595294 0.2647059 0.26988235 0.27505884 0.2802353 0.28541178 0.29058823 0.2957647 0.30094117 0.30611765 0.3112941 0.3164706 0.32164705 0.32682353 0.332 0.33717647 0.34235293 0.3475294 0.3527059 0.354 0.3699146 0.39419308 0.4223541 0.4545918 0.49072585 0.5302154 0.5723598 0.6164691 0.6620533 0.70881534 0.7566347 0.8054859 0.8554472 0.90663755 0.9592199 1.0133829 1.069351 1.1273521 1.1876533 1.2505659 1.3164238 1.3855982 1.4584969 1.5356066 1.6174219 1.7045114 1.7974797 1.8969026 2.0033128 2.1170306 2.2381134 2.3660212 2.499525 2.636612 2.7745976 2.9106057 3.0420527 3.1670115 3.284311 3.3934774 3.4945462 3.5878255 3.6737874 3.7530098 3.8259923 3.8932736 3.9553018 4.012534 4.0653152 4.114 4.158869 4.200188 4.2381773 4.2730384 4.304941 4.3340497 4.360486 4.3843756 4.405812 4.424889 4.441686 4.456261 4.4686775 4.47898 4.4872036 4.49338 4.497533 4.4996753 4.5 4.499856 4.49842 4.4954777 4.4910717 4.4852448 4.4780393 4.469497 4.4596624 4.4485765 4.436282 4.4228225 4.408238 4.3925714 4.3758636 4.3581553 4.339487 4.3198977 4.2994275 4.2781143 4.2559958 4.2331095 4.209492 4.1851788 4.160205 4.134605 4.108412 4.0816584 4.054377 4.0265985 3.998353 3.96967 3.9405785 3.9111063 3.8812804 3.8511271 3.8206723 3.7899404 3.7589552 3.72774 3.6963177 3.6647093 3.6329365 3.6010187 3.5689762 3.536827 3.5045903 3.4722826 3.4399211 3.407522 3.3751006 3.3426719 3.3102505 3.2778497 3.2454827 3.2131624 3.1809006 3.1487088 3.1165981 3.0845788 3.0526612 3.0208547 2.9891682 2.9576106 2.9261901 2.8949144 2.8637908 2.8328264 2.8020277 2.771401 2.7409523 2.710687 2.6806104 2.6507273 2.6210425 2.5915601 2.5622842 2.5332184 2.5043664 2.4757311 2.447316 2.4191232 2.3911555 2.363415 2.3359041 2.3086245 2.281578 2.2547657 2.2281895 2.20185 2.1757483 2.1498857 2.124262 2.0988786 2.0737352 2.0488327 2.0241706 1.9997494 1.9755689 1.9516287 1.9279286 1.9044682 1.881247 1.8582644 1.8355198 1.8130124 1.7907412 1.7687055 1.7469044 1.7253366 1.7040011 1.6828969 1.6620225 1.641377 1.6209587 1.6007665 1.5807991 1.5610548 1.5415323 1.5222299 1.5031463 1.4842798 1.4656289 1.4471917 1.4289669 1.4109527 1.3931473 1.3755492 1.3581564 1.3409675 1.3239806 1.3071938 1.2906054 1.2742138 1.2580171 1.2420133 1.2262009 1.2105781 1.1951429 1.1798934 1.1648281 1.149945 1.1352423 1.1207184 1.1063712 1.0921991 1.0782001 1.0643727 1.0507147 1.0372248 1.023901 1.0107414 0.9977444 0.9849082 0.9722311 0.9597114 0.9473472 0.935137 0.9230789 0.9111713 0.8994126 0.88780093 0.87633485 0.8650125 0.8538324 0.84279287 0.83189225 0.821129 0.8105015 0.80000824 0.7896476 0.77941793 0.76931787 0.7593458 0.7495002 0.73977965 0.73018265 0.72070765 0.71135324 0.702118 0.69300044 0.68399924 0.6751129 0.66634005 0.6576794 0.6491295 0.640689 0.63235664 0.6241311 0.6160109 0.607995 0.6000819 0.5922705 0.58455944 0.57694757 0.56943357 0.5620163 0.5546945 0.54746705 0.5403327 0.5332904 0.5263389 0.519477 0.5127038 0.50601804 0.49941865 0.49290454 0.48647463 0.4801279 0.47386327 0.46767974 0.46157622 0.45555177 0.44960535 0.44373596 0.43794268 0.43222448 0.42658046 0.42100963 0.4155111 0.41008392 0.40472722 0.39944005 0.39422157 0.38907087 0.3839871 0.3789694 0.37401694 0.36912888 0.36430436 0.3595426 0.3548428 0.35020417 0.3456259 0.34110722 0.33664736 0.3322456 0.32790112 0.32361326 0.31938124 0.31520438 0.31108195 0.3070132 0.30299756 0.29903424 0.29512256 0.29126194 0.28745162 0.28369105 0.2799795 0.27631637 0.27270105 0.2691329 0.26561132 0.26213568 0.25870544 0.25531998 0.2519787 0.24868104 0.24542646 0.24221437 0.23904423 0.2359155 0.23282763 0.22978011 0.2267724 0.22380398 0.22087435 0.21798302 0.21512945 0.21231319 0.20953372 0.2067906 0.20408332 0.20141144 0.19877449 0.196172 0.19360355 0.19106868 0.18856695 0.18609795 0.18366122 0.18125637 0.17888296 0.1765406 0.17422888 0.17194739 0.16969575 0.16747357 0.16528045 0.16311602 0.16097991 0.15887176 0.15679118 0.15473782 0.15271133 0.15071136 0.14873756 0.1467896 0.14486712 0.1429698 0.14109732 0.13924934 0.13742554 0.13562562 0.13384925 0.13209614 0.13036598 0.12865846 0.12697329 0.12531018 0.12366885 0.122049 0.120450355 0.11887264 0.11731558 0.11577891 0.11426235 0.112765655 0.11128855 0.10983078 0.108392105 0.10697227 0.10557102 0.104188114 0.102823325 0.1014764 0.10014711 0.09883524 0.09754054 0.0962628 0.09500178 0.09375729 0.09252908 0.09131696 0.09012072 0.08894014 0.08777503 0.086625166 0.08549037 0.084370434 0.08326516 0.082174376 0.08109786 0.08003546 0.078986965 0.077952206 0.076931 0.07592317 0.07492854 0.07394693 0.07297818 0.072022125 0.07107859 0.07014741 0.06922843 0.06832149 0.06742643 0.06654309 0.06567132 0.06481097 0.063961886 0.06312393 0.062296946 0.061480798 0.06067534 0.05988043 0.059095938 0.05832172 0.057557646 0.056803577 0.05605939 0.05532495 0.054600127 0.053884804 0.05317885 0.052482143 0.051794562 0.051115993 0.05044631

</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="4.5" PeakHeight="267.57" Num="5" zHalfNm="237.124" Error="2.418">
-76.38 14.294 -9.6 5.021 -1.655
</ShiftedChebyshev>
</ShiftedChebyshevList>
<QuasiParabolicList Num="10" 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="6509.75" A="-1.71482022E11" B="5.2926548E7" C="-4083.7134" Error="0.00152"/>
<QuasiParabolic ID="2" StartDistance="6509.75" EndDistance="6539.5" A="0.0" B="811.0731" C="-0.08457068" Error="0.0136"/>
<QuasiParabolic ID="3" StartDistance="6539.5" EndDistance="6568.0" A="3.6678263E10" B="-1.1314241E7" C="872.5091" Error="0.0136"/>
<QuasiParabolic ID="4" StartDistance="6568.0" EndDistance="6572.0" A="5.1323784E12" B="-1.56298906E9" C="118996.35" Error="0.0125"/>
<QuasiParabolic ID="5" StartDistance="6572.0" EndDistance="6586.0" A="5.8763578E12" B="-1.78939789E9" C="136221.61" Error="0.018"/>
<QuasiParabolic ID="6" StartDistance="6586.0" EndDistance="6593.0" A="1.58664323E13" B="-4.8231286E9" C="366538.22" Error="0.00296"/>
<QuasiParabolic ID="7" StartDistance="6593.0" EndDistance="6607.0" A="4.2310717E13" B="-1.2845056E10" C="974905.25" Error="0.0178"/>
<QuasiParabolic ID="8" StartDistance="6607.0" EndDistance="6617.0" A="-4.3355535E13" B="1.30869105E10" C="-987556.25" Error="0.0103"/>
<QuasiParabolic ID="9" StartDistance="6617.0" EndDistance="6637.57" A="-1.85513982E13" B="5.5898163E9" C="-421053.75" Error="0.00499"/>
</QuasiParabolicList>
<ProfileValley Model="ULCAR" Width="89.25" Depth="0.154"/>
<TopsideChapman PeakHeight="267.57" PeakDensity="251240.69" PeakScaleHeight="23.695" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
