4 header
grid   a 8 b 5 c 4
size   x 8e-06 y 5e-06 z 4e-06
origin x 0.0 y 0.0 z 0.0
homogenization 1
 1  1  1  2  2  2  2 21
 1  1  1  2  2  2  2 21
 1  1  1  2  2  2  2 25
 1  1  1  2  2  2  2 29
 1  1  1  2  2  2  2 37
 1  1  1  2  2  2  2 21
 1  1  1  2  2  2  2 21
 1  1  1  2  2  2  2 25
 1  1  1  2  2  2  2 29
 1  1  1  2  2  2  2 37
 1  1  1  2  2  2  2 22
 1  1  1  2  2  2  2 22
 1  1  1  2  2  2  2 26
 1  1  1  2  2  2  2 30
 1  1  1  2  2  2  2 38
 1  1  1  2  2  2  2 24
 1  1  1  2  2  2  2 24
 1  1  1  2  2  2  2 28
 1  1  1  2  2  2  2 32
 1  1  1  2  2  2  2 40