Set label on y axis. This option works in the same way as axis.x.label.
Valid horizontal positions: inner-right (Default), inner-center, inner-left, outer-right, outer-center, outer-left
Valid vertical positions: inner-top, inner-middle, inner-bottom, outer-top, outer-middle, outer-bottom
Set padding for y axis.
You can set padding for y axis to create more space on the edge of the axis. This option accepts object and it can include top and bottom. top, bottom will be treated as pixels.