You can convert the data into unified standard.

Can you please elaborate it ?

Whats the ph you are working on?

I am using 0.1 m HClO4 solution as electrolyte

If you've used Ag/AgCl electrode with Saturated KCl, the data you get using this electrode has an offset of +0.198V with respect to the standard hydrogen electrode (SHE), at room temperature and 1 bar pressure. For the reversible hydrogen electrode, you could approximate the potential as -0.059*pH, i.e. for your 0.1M solution, you could take this value as -5.9mV with respect to SHE assuming you have 0.1M H+ ions. Effectively, if you subtract 0.1921 V from whatever potentials you see with Ag/AgCl electrode, you are at the same reference electrode as RHE.

if u have the possibility, measure your Ag/AgCl RE against the SHE and just plot everything versus SHE

thanks Sairam, Mara and Edward for your suggestions. I sorted out the problem accordingly.

See http://www.consultrsr.com/resources/ref/refpotls3.htm to convert from one Reference Electrode to another.

thanks Peterson Sir. The link is really very helpful.