Number of measurements available in each month during the year of 1997-2002

Location Month 1997 1998 1999 2000 2001 2002
NOAB1 1 0 0 0 1 8 10
NOAB1 2 0 0 0 8 9 9
NOAB1 3 0 0 0 9 5 10
NOAB1 4 0 0 0 9 10 10
NOAB1 5 0 0 0 4 10 10
NOAB1 6 0 0 0 1 5 10
NOAB1 7 0 0 0 8 6 3
NOAB1 8 0 0 0 5 4 6
NOAB1 9 0 0 0 6 4 9
NOAB1 10 0 0 0 0 10 9
NOAB1 11 0 0 0 10 10 10
NOAB1 12 0 0 0 3 10 9