If you want evapotranspiration data around the world, I would suggest using remote sensing products such as MODIS.

Thanks

Dear Ram L. Ray

I need data measured by lysimeter .

you mean that reference evapotranspiration data or evapotranspiration date?

World-wide Lysimeter data could be hard to find. But in the US ET data for different states could be found in sites such as:

https://cimis.water.ca.gov

L. M. J. R. Wijayawardhana I mean actual ET and reference ET