Ion		No. of levels
U I		2
U II		2
U III		2
U IV		2
U V		2
U VI		2
U VII		2
U VIII		2
U IX		2
U X		2
U XI		2
U XII		2
U XIII		2
U XIV		2
U XV		2
U XVI		2
U XVII		2
U XVIII		2
U XIX		2
U XX		2
U XXI		2
U XXII		2
U XXIII		2
U XXIV		2
U XXV		2
U XXVI		2
U XXVII		2
U XXVIII		2
U XXIX		2
U XXX		2
U XXXI		2
U XXXII		2
U XXXIII		2
U XXXIV		2
U XXXV		2
U XXXVI		2
U XXXVII		2
U XXXVIII		2
U XXXIX		2
U XL		2
U XLI		2
U XLII		2
U XLIII		2
U XLIV		2
U XLV		2
U XLVI		2
U XLVII		2
U XLVIII		2
U XLIX		2
U L		2
U LI		2
U LII		2
U LIII		2
U LIV		2
U LV		2
U LVI		2
U LVII		2
U LVIII		2
U LIX		2
U LX		2
U LXI		2
U LXII		2
U LXIII		2
U LXIV		2
U LXV		2
U LXVI		2
U LXVII		2
U LXVIII		2
U LXIX		2
U LXX		2
U LXXI		2
U LXXII		2
U LXXIII		2
U LXXIV		2
U LXXV		2
U LXXVI		2
U LXXVII		2
U LXXVIII		2
U LXXIX		2
U LXXX		2
U LXXXI		2
U LXXXII		2
U LXXXIII		2
U LXXXIV		2
U LXXXV		2
U LXXXVI		2
U LXXXVII		2
U LXXXVIII		2
U LXXXIX		2
U XC		20
U XCI		39
U XCII		10
Total for U:		247