version: grass7
order: nsbt
north: 30.000000
south: 0.000000
east: 30.000000
west: 0.000000
top: 30.000000
bottom: 0.000000
rows: 3
cols: 3
levels: 3
24.00 36.00 24.00 
36.00 54.00 36.00 
24.00 36.00 24.00 
36.00 54.00 36.00 
54.00 81.00 54.00 
36.00 54.00 36.00 
24.00 36.00 24.00 
36.00 54.00 36.00 
24.00 36.00 24.00