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| Ion | No. of levels | 
|---|
| Se I | 173 | 
| Se II | 78 | 
| Se III | 53 | 
| Se IV | 29 | 
| Se V | 15 | 
| Se VI | 7 | 
| Se VII | 45 | 
| Se VIII | 37 | 
| Se IX | 2 | 
| Se X | 2 | 
| Se XI | 2 | 
| Se XII | 2 | 
| Se XIII | 2 | 
| Se XIV | 2 | 
| Se XV | 4 | 
| Se XVI | 7 | 
| Se XVII | 3 | 
| Se XVIII | 9 | 
| Se XIX | 10 | 
| Se XX | 8 | 
| Se XXI | 7 | 
| Se XXII | 6 | 
| Se XXIII | 18 | 
| Se XXIV | 23 | 
| Se XXV | 20 | 
| Se XXVI | 46 | 
| Se XXVII | 55 | 
| Se XXVIII | 2 | 
| Se XXIX | 2 | 
| Se XXX | 4 | 
| Se XXXI | 25 | 
| Se XXXII | 20 | 
| Se XXXIII | 92 | 
| Se XXXIV | 50 | 
| Total for Se: | 860 |