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| Ion | No. of levels |
|---|
| Pa I | 2 |
| Pa II | 2 |
| Pa III | 2 |
| Pa IV | 2 |
| Pa V | 2 |
| Pa VI | 2 |
| Pa VII | 2 |
| Pa VIII | 2 |
| Pa IX | 2 |
| Pa X | 2 |
| Pa XI | 2 |
| Pa XII | 2 |
| Pa XIII | 2 |
| Pa XIV | 2 |
| Pa XV | 2 |
| Pa XVI | 2 |
| Pa XVII | 2 |
| Pa XVIII | 2 |
| Pa XIX | 2 |
| Pa XX | 2 |
| Pa XXI | 2 |
| Pa XXII | 2 |
| Pa XXIII | 2 |
| Pa XXIV | 2 |
| Pa XXV | 2 |
| Pa XXVI | 2 |
| Pa XXVII | 2 |
| Pa XXVIII | 2 |
| Pa XXIX | 2 |
| Pa XXX | 2 |
| Pa XXXI | 2 |
| Pa XXXII | 2 |
| Pa XXXIII | 2 |
| Pa XXXIV | 2 |
| Pa XXXV | 2 |
| Pa XXXVI | 2 |
| Pa XXXVII | 2 |
| Pa XXXVIII | 2 |
| Pa XXXIX | 2 |
| Pa XL | 2 |
| Pa XLI | 2 |
| Pa XLII | 2 |
| Pa XLIII | 2 |
| Pa XLIV | 2 |
| Pa XLV | 2 |
| Pa XLVI | 2 |
| Pa XLVII | 2 |
| Pa XLVIII | 2 |
| Pa XLIX | 2 |
| Pa L | 2 |
| Pa LI | 2 |
| Pa LII | 2 |
| Pa LIII | 2 |
| Pa LIV | 2 |
| Pa LV | 2 |
| Pa LVI | 2 |
| Pa LVII | 2 |
| Pa LVIII | 2 |
| Pa LIX | 2 |
| Pa LX | 2 |
| Pa LXI | 2 |
| Pa LXII | 2 |
| Pa LXIII | 2 |
| Pa LXIV | 2 |
| Pa LXV | 2 |
| Pa LXVI | 2 |
| Pa LXVII | 2 |
| Pa LXVIII | 2 |
| Pa LXIX | 2 |
| Pa LXX | 2 |
| Pa LXXI | 2 |
| Pa LXXII | 2 |
| Pa LXXIII | 2 |
| Pa LXXIV | 2 |
| Pa LXXV | 2 |
| Pa LXXVI | 2 |
| Pa LXXVII | 2 |
| Pa LXXVIII | 2 |
| Pa LXXIX | 2 |
| Pa LXXX | 2 |
| Pa LXXXI | 2 |
| Pa LXXXII | 2 |
| Pa LXXXIII | 2 |
| Pa LXXXIV | 2 |
| Pa LXXXV | 2 |
| Pa LXXXVI | 2 |
| Pa LXXXVII | 2 |
| Pa LXXXVIII | 2 |
| Pa LXXXIX | 20 |
| Pa XC | 39 |
| Pa XCI | 10 |
| Total for Pa: | 245 |