@DonkeyKong Read, please, this QA: https://community.plotly.com/t/plotly-js-how-do-i-make-two-y-axes-associated-with-a-single-x-axis/11046
especially starting with https://community.plotly.com/t/plotly-js-how-do-i-make-two-y-axes-associated-with-a-single-x-axis/11046/8.