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Base Height of F-region during 2005-2006

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Category: General Contents
Published Date Written by SPL WebMaster
Virtual base height of F-region (h′F) from 17.5 h to 21 hrs on during the year 2005-2006






























%Day 17.5 17.75 18 18.25 18.5 18.75 19 19.25 19.5 19.75 20 20.25 20.5 20.75 21
1 241.1 251.8 248.2 248.2 244.6 244.6 244.6 246.4 242.9 244.6 242.9 241.1 237.5 233.9 232.1
2 253.6 255.4 255.4 258.9 266.1 273.2 273.2 273.2 280.4 280.4 278.6 275 266.1 258.9 250
3 248.2 257.1 269.6 275 287.5 298.2 303.6 303.6 300 298.2 289.3 285.7 275 266.1 258.9
4 242.9 253.6 255.4 262.5 273.2 287.5 292.9 298.2 301.8 300 296.4 285.7 280.4 273.2 260.7
5 241.1 250 255.4 264.3 282.1 307.1 325 335.7 328.6 317.9 314.3 310.7 308.9 294.6 282.1
6 239.3 244.6 248.2 244.6 242.9 241.1 235.7 233.9 241.1 246.4 248.2 253.6 251.8 248.2 250
7 242.9 248.2 258.9 264.3 273.2 283.9 300 310.7 319.6 323.2 325 321.4 308.9 301.8 294.6
8 244.6 250 262.5 273.2 289.3 312.5 316.1 339.3 369.6 400 419.6 433.9 435.7 426.8 417.9
9 244.6 251.8 255.4 264.3 275 283.9 283.9 280.4 273.2 271.4 273.2 262.5 257.1 250 239.3
10 248.2 250 258.9 258.9 258.9 251.8 248.2 244.6 239.3 237.5 241.1 241.1 241.1 241.1 241.1
11 253.6 258.9 262.5 260.7 267.9 271.4 273.2 280.4 278.6 280.4 282.1 271.4 269.6 264.3 251.8
12 241.1 246.4 255.4 258.9 260.7 260.7 264.3 271.4 271.4 273.2 271.4 266.1 262.5 258.9 246.4
13 237.5 248.2 248.2 250 253.6 260.7 267.9 269.6 273.2 266.1 260.7 257.1 250 246.4 248.2
14 260.7 255.4 253.6 246.4 260.7 264.3 273.2 278.6 283.9 296.4 296.4 275 273.2 264.3 260.7
15 235.7 246.4 248.2 250 248.2 253.6 258.9 260.7 266.1 262.5 260.7 260.7 260.7 260.7 260.7
16 235.7 248.2 250 257.1 258.9 264.3 264.3 273.2 285.7 294.6 292.9 287.5 282.1 276.8 267.9
17 235.7 237.5 241.1 239.3 237.5 235.7 235.7 233.9 235.7 226.8 226.8 216.1 216.1 212.5 214.3
18 235.7 244.6 244.6 244.6 242.9 246.4 246.4 248.2 248.2 242.9 244.6 239.3 241.1 241.1 233.9
19 230.4 237.5 248.2 239.3 237.5 235.7 237.5 242.9 248.2 253.6 255.4 248.2 241.1 233.9 232.1
20 233.9 235.7 250 253.6 253.6 253.6 251.8 255.4 258.9 260.7 260.7 257.1 250 235.7 235.7
21 233.9 235.7 250 253.6 253.6 253.6 251.8 255.4 258.9 260.7 260.7 257.1 250 235.7 235.7
21 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN
22 237.5 241.1 248.2 248.2 248.2 248.2 273.2 273.2 283.9 294.6 296.4 287.5 282.1 275 262.5
23 237.5 241.1 248.2 257.1 258.9 266.1 273.2 275 275 275 269.6 264.3 257.1 250 244.6
24 237.5 241.1 248.2 248.2 246.4 246.4 250 248.2 248.2 246.4 246.4 248.2 260.7 262.5 273.2
25 244.6 251.8 260.7 264.3 269.6 273.2 280.4 273.2 273.2 262.5 266.1 264.3 264.3 260.7 257.1
26 244.6 251.8 260.7 264.3 269.6 273.2 280.4 273.2 273.2 262.5 266.1 264.3 264.3 260.7 257.1
26 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN
27 237.5 250 258.9 273.2 287.5 303.6 337.5 342.9 348.2 364.3 355.4 355.4 358.9 351.8 344.6
28 237.5 250 258.9 273.2 287.5 303.6 337.5 342.9 348.2 364.3 355.4 355.4 358.9 351.8 344.6
28 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN
29 226.8 233.9 239.3 262.5 271.4 278.6 285.7 296.4 305.4 310.7 310.7 307.1 310.7 310.7 310.7
30 228.6 244.6 248.2 260.7 269.6 278.6 285.7 291.1 296.4 303.6 300 300 289.3 280.4 278.6
31 233.9 242.9 248.2 248.2 250 255.4 257.1 258.9 260.7 260.7 262.5 264.3 266.1 273.2 271.4
32 237.5 244.6 251.8 253.6 253.6 258.9 264.3 269.6 269.6 273.2 271.4 269.6 271.4 273.2 275
33 226.8 241.1 242.9 244.6 248.2 251.8 258.9 271.4 276.8 280.4 283.9 283.9 283.9 283.9 283.9
34 233.9 242.9 248.2 253.6 258.9 260.7 271.4 280.4 289.3 301.8 310.7 321.4 319.6 319.6 312.5
35 226.8 239.3 250 246.4 241.1 237.5 244.6 248.2 255.4 258.9 260.7 258.9 255.4 251.8 241.1
36 232.1 237.5 253.6 260.7 260.7 260.7 264.3 267.9 271.4 285.7 294.6 310.7 355.4 373.2 378.6
37 226.8 237.5 250 248.2 250 248.2 246.4 244.6 244.6 248.2 248.2 246.4 253.6 246.4 239.3
38 237.5 242.9 251.8 257.1 269.6 283.9 301.8 312.5 308.9 305.4 301.8 287.5 276.8 257.1 241.1
39 237.5 235.7 253.6 257.1 255.4 260.7 271.4 269.6 271.4 271.4 269.6 269.6 266.1 269.6 262.5
40 221.4 233.9 239.3 242.9 244.6 246.4 257.1 258.9 258.9 253.6 251.8 251.8 250 248.2 242.9
41 225 235.7 241.1 248.2 255.4 271.4 283.9 280.4 275 269.6 266.1 262.5 258.9 251.8 246.4
42 230.4 228.6 239.3 244.6 246.4 257.1 260.7 269.6 276.8 278.6 278.6 264.3 253.6 239.3 225
43 217.9 232.1 244.6 257.1 262.5 271.4 287.5 308.9 323.2 332.1 342.9 337.5 314.3 300 291.1
44 226.8 230.4 235.7 241.1 244.6 244.6 246.4 246.4 255.4 258.9 267.9 266.1 266.1 262.5 260.7
45 217.9 230.4 244.6 244.6 250 248.2 246.4 244.6 242.9 239.3 235.7 232.1 235.7 233.9 230.4
46 203.6 219.6 241.1 246.4 255.4 260.7 262.5 260.7 264.3 262.5 260.7 257.1 250 246.4 242.9
47 219.6 223.2 242.9 257.1 273.2 257.1 262.5 260.7 262.5 260.7 276.8 264.3 262.5 273.2 271.4
48 208.9 237.5 246.4 266.1 273.2 291.1 316.1 342.9 344.6 344.6 344.6 344.6 344.6 344.6 344.6
49 221.4 223.2 241.1 244.6 248.2 244.6 241.1 237.5 233.9 258.9 260.7 267.9 269.6 269.6 269.6
50 233.9 233.9 246.4 257.1 258.9 262.5 273.2 289.3 307.1 317.9 321.4 325 333.9 323.2 323.2
51 228.6 246.4 248.2 250 253.6 257.1 264.3 262.5 266.1 262.5 260.7 267.9 266.1 258.9 257.1
52 214.3 230.4 248.2 253.6 257.1 267.9 285.7 289.3 291.1 291.1 291.1 292.9 292.9 289.3 287.5
53 214.3 230.4 248.2 253.6 257.1 267.9 285.7 289.3 291.1 291.1 291.1 292.9 292.9 289.3 287.5
53 223.2 237.5 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN
54 208.9 212.5 233.9 248.2 246.4 248.2 257.1 264.3 269.6 276.8 276.8 260.7 257.1 250 237.5
55 223.2 235.7 246.4 258.9 267.9 276.8 289.3 292.9 294.6 289.3 282.1 278.6 276.8 283.9 280.4
56 214.3 223.2 230.4 233.9 242.9 258.9 282.1 317.9 316.1 319.6 332.1 333.9 339.3 342.9 346.4
57 228.6 233.9 244.6 255.4 257.1 258.9 264.3 269.6 283.9 287.5 289.3 289.3 289.3 289.3 289.3
58 226.8 233.9 242.9 251.8 253.6 251.8 258.9 269.6 271.4 280.4 292.9 307.1 321.4 321.4 321.4
59 219.6 228.6 237.5 244.6 244.6 242.9 237.5 230.4 223.2 219.6 216.1 214.3 212.5 216.1 217.9
60 198.2 189.3 241.1 257.1 269.6 267.9 269.6 269.6 269.6 267.9 262.5 258.9 264.3 266.1 273.2
61 217.9 225 233.9 239.3 233.9 228.6 221.4 210.7 208.9 208.9 208.9 207.1 210.7 214.3 217.9
62 233.9 212.5 214.3 214.3 269.6 280.4 296.4 301.8 321.4 325 325 325 325 325 325
63 228.6 232.1 235.7 242.9 244.6 244.6 242.9 244.6 244.6 246.4 264.3 266.1 269.6 269.6 264.3
64 228.6 232.1 239.3 246.4 246.4 241.1 239.3 242.9 257.1 276.8 280.4 292.9 291.1 291.1 300
65 207.1 225 241.1 246.4 246.4 244.6 239.3 237.5 233.9 232.1 226.8 223.2 226.8 233.9 239.3
66 189.3 230.4 230.4 239.3 241.1 241.1 232.1 233.9 233.9 235.7 235.7 233.9 237.5 235.7 230.4
67 208.9 228.6 235.7 244.6 250 255.4 260.7 271.4 280.4 282.1 280.4 283.9 282.1 271.4 262.5
68 201.8 237.5 235.7 246.4 251.8 255.4 250 246.4 244.6 251.8 253.6 251.8 248.2 244.6 242.9
69 205.4 192.9 219.6 221.4 244.6 244.6 246.4 250 251.8 269.6 267.9 276.8 275 278.6 275
70 200 219.6 226.8 242.9 242.9 242.9 244.6 242.9 242.9 239.3 232.1 228.6 226.8 225 225
71 185.7 191.1 221.4 226.8 242.9 242.9 242.9 232.1 230.4 228.6 226.8 226.8 226.8 226.8 235.7
72 187.5 221.4 219.6 232.1 241.1 237.5 232.1 230.4 232.1 232.1 230.4 228.6 226.8 225 223.2
73 208.9 208.9 225 233.9 241.1 237.5 233.9 225 221.4 219.6 219.6 219.6 225 223.2 221.4
74 214.3 214.3 228.6 235.7 242.9 239.3 237.5 237.5 233.9 230.4 228.6 226.8 230.4 225 219.6
75 196.4 212.5 230.4 241.1 244.6 250 253.6 251.8 253.6 248.2 246.4 244.6 241.1 232.1 228.6
76 208.9 221.4 232.1 239.3 244.6 250 258.9 269.6 289.3 308.9 321.4 332.1 328.6 314.3 300
77 221.4 226.8 230.4 241.1 242.9 239.3 233.9 232.1 233.9 237.5 244.6 246.4 244.6 242.9 242.9
78 225 223.2 233.9 246.4 246.4 251.8 246.4 242.9 239.3 235.7 235.7 230.4 230.4 217.9 210.7
79 217.9 232.1 235.7 242.9 244.6 242.9 241.1 241.1 241.1 242.9 244.6 244.6 241.1 237.5 230.4
80 210.7 212.5 232.1 239.3 244.6 241.1 246.4 253.6 264.3 271.4 280.4 285.7 287.5 287.5 283.9
81 210.7 214.3 235.7 241.1 242.9 241.1 239.3 241.1 251.8 257.1 260.7 260.7 260.7 260.7 260.7
82 223.2 230.4 242.9 246.4 253.6 253.6 260.7 258.9 269.6 269.6 273.2 285.7 285.7 285.7 285.7
83 223.2 244.6 244.6 257.1 262.5 260.7 267.9 260.7 258.9 255.4 244.6 237.5 230.4 221.4 219.6
84 271.4 257.1 246.4 244.6 242.9 242.9 246.4 251.8 257.1 255.4 257.1 248.2 239.3 233.9 232.1
85 219.6 232.1 235.7 241.1 244.6 244.6 246.4 246.4 248.2 253.6 257.1 258.9 264.3 267.9 257.1
86 216.1 226.8 235.7 235.7 239.3 235.7 237.5 235.7 239.3 241.1 244.6 244.6 242.9 239.3 235.7
87 233.9 235.7 244.6 248.2 250 257.1 257.1 264.3 273.2 280.4 283.9 285.7 280.4 275 269.6
88 217.9 232.1 237.5 244.6 251.8 255.4 260.7 271.4 280.4 303.6 308.9 312.5 317.9 325 333.9
89 246.4 242.9 244.6 248.2 250 248.2 251.8 253.6 255.4 262.5 260.7 264.3 264.3 258.9 251.8
90 242.9 244.6 248.2 250 244.6 237.5 241.1 253.6 253.6 262.5 271.4 273.2 276.8 283.9 292.9
91 232.1 232.1 242.9 246.4 248.2 253.6 260.7 269.6 273.2 278.6 278.6 278.6 269.6 267.9 266.1
92 239.3 237.5 244.6 248.2 253.6 251.8 258.9 273.2 289.3 307.1 319.6 346.4 351.8 344.6 337.5
93 216.1 219.6 232.1 239.3 244.6 244.6 255.4 273.2 275 289.3 292.9 292.9 292.9 292.9 292.9
94 176.8 232.1 230.4 242.9 241.1 255.4 271.4 296.4 305.4 307.1 307.1 307.1 307.1 307.1 307.1
95 237.5 251.8 255.4 251.8 246.4 250 253.6 266.1 266.1 275 275 275 275 275 275
96 207.1 228.6 228.6 239.3 242.9 248.2 258.9 264.3 276.8 283.9 292.9 296.4 298.2 298.2 298.2
97 225 233.9 237.5 246.4 257.1 258.9 264.3 269.6 271.4 269.6 266.1 258.9 257.1 253.6 251.8
98 200 198.2 241.1 239.3 250 251.8 260.7 267.9 275 269.6 267.9 266.1 264.3 258.9 253.6
99 217.9 216.1 233.9 237.5 242.9 248.2 248.2 253.6 262.5 267.9 273.2 276.8 276.8 280.4 278.6
100 228.6 228.6 237.5 242.9 244.6 251.8 260.7 275 283.9 296.4 298.2 298.2 298.2 298.2 298.2
101 226.8 233.9 241.1 244.6 248.2 250 253.6 266.1 275 280.4 283.9 294.6 294.6 294.6 294.6
102 226.8 225 237.5 239.3 246.4 251.8 264.3 275 285.7 296.4 298.2 298.2 298.2 298.2 298.2
103 219.6 221.4 226.8 230.4 233.9 239.3 250 260.7 275 296.4 308.9 319.6 323.2 326.8 330.4
104 217.9 221.4 232.1 235.7 244.6 241.1 248.2 250 257.1 262.5 271.4 275 275 278.6 282.1
105 217.9 221.4 232.1 235.7 244.6 241.1 248.2 250 257.1 262.5 271.4 275 275 278.6 282.1
105 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN
106 230.4 230.4 235.7 242.9 246.4 244.6 258.9 271.4 282.1 294.6 298.2 300 292.9 289.3 287.5
107 232.1 233.9 235.7 235.7 244.6 242.9 244.6 248.2 250 253.6 251.8 253.6 257.1 257.1 253.6
108 225 233.9 241.1 242.9 244.6 253.6 266.1 275 282.1 285.7 294.6 292.9 292.9 260.7 260.7
109 233.9 237.5 241.1 241.1 235.7 233.9 232.1 233.9 237.5 241.1 244.6 237.5 235.7 235.7 233.9
110 242.9 239.3 250 276.8 250 239.3 235.7 228.6 226.8 221.4 219.6 217.9 214.3 207.1 207.1
111 223.2 237.5 237.5 241.1 246.4 250 257.1 258.9 257.1 257.1 255.4 258.9 253.6 246.4 246.4
112 230.4 228.6 239.3 239.3 244.6 250 258.9 266.1 267.9 269.6 260.7 251.8 253.6 267.9 262.5
113 201.8 226.8 239.3 248.2 255.4 262.5 273.2 282.1 289.3 289.3 285.7 276.8 271.4 264.3 257.1
114 217.9 233.9 235.7 250 253.6 266.1 285.7 301.8 312.5 310.7 323.2 323.2 323.2 314.3 257.1
115 210.7 228.6 237.5 246.4 255.4 260.7 269.6 280.4 282.1 287.5 287.5 287.5 285.7 273.2 258.9
116 192.9 191.1 239.3 244.6 246.4 255.4 262.5 267.9 273.2 275 271.4 266.1 262.5 257.1 255.4
117 228.6 235.7 242.9 250 253.6 264.3 280.4 294.6 300 303.6 305.4 305.4 305.4 305.4 305.4
118 248.2 242.9 251.8 257.1 264.3 264.3 275 282.1 289.3 292.9 296.4 300 296.4 291.1 285.7
119 239.3 260.7 266.1 255.4 255.4 257.1 262.5 264.3 260.7 257.1 248.2 242.9 239.3 235.7 235.7
120 242.9 239.3 241.1 244.6 250 251.8 271.4 285.7 300 308.9 307.1 307.1 307.1 307.1 307.1
121 221.4 226.8 239.3 241.1 248.2 255.4 267.9 283.9 291.1 291.1 291.1 291.1 291.1 291.1 228.6
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