Ion		No. of levels
Cr I		659
Cr II		914
Cr III		215
Cr IV		155
Cr V		47
Cr VI		63
Cr VII		66
Cr VIII		34
Cr IX		49
Cr X		39
Cr XI		42
Cr XII		71
Cr XIII		80
Cr XIV		53
Cr XV		69
Cr XVI		29
Cr XVII		28
Cr XVIII		19
Cr XIX		24
Cr XX		42
Cr XXI		36
Cr XXII		42
Cr XXIII		44
Cr XXIV		50
Total for Cr:		2870