My height is 172 cm, chair height 42 cm, table height 73 cm, the tray is for keyboard 9 cm below the surface of the table.
To select the most suitable height of furniture helped me data from... would not believe from where!
Of government regulations
There is a special resolution that reglamentary how should be organized a working computer.
According to the application of SANPIN 2.2.2/2.4.1340-03
Taking data about the height of these tables as a basis and a little experimenting with the height I found the most convenient size, which are pointed out in the beginning.
When you pick a height in the best way, you will be able to sit for hours at their place of work, with no desire to get up and stretch your back.
A successful search!