S. No.
Transitions
(Series B)
Calculated
Observed
to within
Convention-al source
Transitions
(Series A & C)
Calculated
Observed
to within
Conventional source
1
3.1 → 2.0
21.797
21.798+
O VII
3.0 → 2.1
3.2 → 2.1
21.608
21.613
21.602+
21.602+
O VII
2
4.1 → 2.0
16.947
16.956+
?
4.0 → 2.1
16.835
16.821
?
3
5.1 → 2.0
15.428
15.428
?
5.0 → 2.1
15.335
-
-
4
6.1 → 2.0
14.721
14.737
Fe XIX
6.0 → 2.1
14.636
-
-
5
7.1 → 2.0
14.327
14.311
?
7.0 → 2.1
14.247
14.258
Fe XVIII
6
8.1 → 2.0
14.083
14.076
Ni XIX
8.0 → 2.1
14.006
14.017
?
7
9.1 → 2.0
13.921
13.934
?
9.0 → 2.1
13.845
13.842
?
8
10.1 → 2.0
13.807
13.796
Fe XIX
10.0 → 2.1
13.733
13.738
Fe XIX
9
11.1 → 2.0
13.724
13.719
Ne VIII
11.0 → 2.1
13.651
13.645
Ne VIII
10
12.1 → 2.0
13.662
13.669
Fe XIX
12.0 → 2.1
13.589
-
-
11
13.1 → 2.0
13.614
13.630
?
13.0 → 2.1
13.541
13.551
Ne IX
12
14.1 → 2.0
13.576
-
-
14.0 → 2.1
13.504
13.504
Fe XIX
13
15.1 → 2.0
13.545
13.551
Ne IX
15.0 → 2.1
13.474
13.463
Fe XIX
14
16.1 → 2.0
13.520
13.520
Fe XIX
16.0 → 2.1
13.449
13.446
Ne IX
15
17.1 → 2.0
13.500
13.504
Fe XIX
17.0 → 2.1
13.429
13.426
Fe XIX (?)
16
18.1 → 2.0
13.483
13.463
Fe XIX
18.0 → 2.1
13.412
13.402
Fe XIX (?)
17
19.1 → 2.0
13.468
13.463
Fe XIX
19.0 → 2.1
13.397
13.4-2
Fe XIX (?)
18
20.1 → 2.0
13.456
13.446
Ne IX
20.0 → 2.1
13.385
13.375
Fe XVIII
19
21.1 → 2.0
13.445
13.446
Ne IX
21.0 → 2.1
13.375
13.375
Fe XVIII
20
22.1 → 2.0
13.436
13.446
Ne IX
22.0 → 2.1
13.366
13.354
Fe XVIII
21
23.1 → 2.0
13.428
13.426
Fe XIX (?)
23.0 → 2.1
13.358
13.354
Fe XVIII
22
24.1 → 2.0
13.421
13.426
Fe XIX (?)
24.0 → 2.1
13.351
13.354
Fe XVIII
23
25.1 → 2.0
13.415
13.402
Fe XIX (?)
25.0 → 2.1
13.345
13.354
Fe XVIII
24
26.1 → 2.0
13.410
13.402
Fe XIX (?)
26.0 → 2.1
13.339
13.322
Fe XVIII
25
27.1 → 2.0
13.405
13.402
Fe XIX (?)
27.0 → 2.1
13.335
13.322
Fe XVIII
26
28.1 → 2.0
13.400
13.402
Fe XIX (?)
28.0 → 2.1
13.330
13.322
Fe XVIII
27
29.1 → 2.0
13.396
13.402
Fe XIX (?)
29.0 → 2.1
13.326
13.322
Fe XVIII
28
30.1 → 2.0
13.393
13.402
Fe XIX (?)
30.0 → 2.1
13.323
13.322
Fe XVIII
-
-
-
-
-
-
-
-
-
29
∞ → 2.0
13.343
13.354
Fe XVIII
∞ → 2.1
13.273
13.279
Fe XIX