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

Location Month 1997 1998 1999 2000 2001 2002
HAVO1 1 0 0 0 0 5 8
HAVO1 2 0 0 0 0 9 10
HAVO1 3 0 0 0 0 8 10
HAVO1 4 0 0 0 0 10 10
HAVO1 5 0 0 0 0 8 10
HAVO1 6 0 0 0 0 6 10
HAVO1 7 0 0 0 0 9 11
HAVO1 8 0 0 0 0 10 10
HAVO1 9 0 0 0 0 9 10
HAVO1 10 0 0 0 0 11 10
HAVO1 11 0 0 0 0 10 10
HAVO1 12 0 0 0 0 10 10