B(M) is for a "regular" foot
and C/D is for a "wide" foot
There is no "normal" since the size and age of the person would make a big difference as well as the eating habits and health of the person. Frequency of elimination and other variables will change the size of each individual BM from person to person and from time to time. Weight would also be affected by the amount of water in the stool. Some adults have very big stools and some have small stools, especially if they don't eat enough fiber in their diet.
BM Huesca was created in 1995.
BM Aragón was created in 2003.
BM Valladolid was created in 1991.
BM Alcobendas was created in 1994.
BM Antequera was created in 1994.
BM Remudas was created in 1978.
Algeciras BM was created in 1974.
BM Granollers was created in 1944.
BM Neptuno was created in 2011.
BM Altea ended in 2008.
BM Altea was created in 1974.