Quarterly Sales Orders Vs Quarterly Production Capacity

I always disliked this Graph because it always seemed so dyslectic. I never really understood it. Like a cryptic Crossword.
Now we have a hint, the key to interpret the puzzle.

FY19 Annual Sales Received 292T ( End of the FY19 year sales Die?)

FY20 Annual Sales received 1,059T ( Again sales fall away EOFY)

FY20 Annual production capacity is 1,388T ( 347 x 4) until mid year when new production comes on line raising total to 2464T (616 x 4). Further new production opens that raises output to 889T per quarter. This should equate to (889 x4)T per Year = 3,556T Annually.

Now under a) Anticipate Sales orders to be 1,000T for year ending 30 June 2020 as per the Graph 209 +300+400+150 = 1059T. OK

Now under b) once all the Equipment is operational in December they expect in excess of 2,400T capacity in a twelve month period beginning January 2020. Calendar Year.

What is the 889T figure in the Graph. It has not been assigned an Annual tonnage nos. Is it their maximum quarterly capacity. (3,556T per year)?

I hope FY is Financial Year.