This is the available stock at the last day of the [Horizontal axis]. Please note that nothing would be displayed if location was chosen to [Horizontal axis] or any location was chosen at VIEW OPTION. This is due to the restriction that the quantity of available stock cannot be calculated by each location.
This is number of days in the period. If the [Horizontal axis] of the graph is set to monthly, then the calculation period will be one month. If it is set to Daily, then the calculation period will be one day. Also if it is set to item, the calculation period will be the [Display period] set by the VIEW OPTION