Normalisation morlet wavelet transform

Hi,

I am trying to normalized coefficients given by Cwt function. My input datas are in seconds What is the unit of coefficients given by the cwt Function : is it sec2/Hz ? Or just sec or without Any unit? In order to normalize these coefficients what is The formula to use? I have seen that we can normalise depending of scales but I don't understand The formula... Could you help me please? Tanks a lot