~snip~
So I need historical volume datas of exchanges.
I found one tool from google but I don't know if this is the one that you are looking for.
Check this from here
https://data.bitcoinity.orgBut not all exchange sites are there and this is only for bitcoin. You can set what date above on the chart and choose what exchange you want to see the volume below the chart.
For altcoin I don't find any tools online that gives you historical volume data. It seems that it doesn't exist.