ST590G -- FALL 2012 
     
     Class Exercise #3 -- Tuesday, 11 September 2012

     Our Group ___________________________________________________

     In the directory "snow" are files from sites in Norway 
     containing dates and snow depths recorded daily for many years.  
     Some of the files are:

     asker.txt  bjornholt.txt  kjobli.txt  listafyr.txt oslo.txt

     songli.txt  stavanger.txt tafjord.txt  tromso.txt  utsira.txt

     Choose one of these files (circle it) (the same one you did Thursday?) 
     and do (1) to (2).  Again, the header should take the first 24 records.  

     To learn about the effects of climate change, we may want to look at 
     the maximum snow depth or the date when that maximum occurs and 
     determine whether these features show any pattern over time.

     Proc univariate will give the largest and smallest observations and 
     the observation index where those values occurred.  We can also attach 
     a label to the observations with an 'id' statement.

     1) Compute the max and where it occurred (datemax) for each snow year  
     with proc univariate.  To address the question in (5), you may want 
     to keep track of dates relative to the start of the snowyear.

     2) Look up the proc univariate documentation to find the ODS table 
     names.

     3) Use ODS to put the right table in a dataset.

     4) Process the dataset created by ODS to find max and datemax for 
     each year.

     5) Plot max vs snowyear and datemax vs snowyear.  Is the maximum
     appearing later in the year?

     Submit your output and log.  Don't forget your toes!