Displaying 1 result from an estimated 1 matches for "castagneto".
2005 May 04
1
selecting maximum values
...observation for each sampling station and each
sampling date, while in other cases (chlorophyll) I
have 1 obs for each meter-depth for each station and
date. How can I select only the max chlorophyll value
for each station/date?
example
row station date depth chlorophyll
1 Castagneto 21/06/01 -0.5 2.0
2 Castagneto 21/06/01 -1.5 2.2
3 Castagneto 21/06/01 -2.5 2.4
4 Castagneto 21/06/01 -3.5 2.1
5 Ancona 23/06/01 -0.5 2.4
6 Ancona 23/06/01 -1.5 2.5
7...