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#									     #
#	Legend of formats and contents for data files accompany		     #
#	"Experimental Design and Data Analysis for Biologists"		     #
#	By G. P. Quinn and M. J. Keough, 2002			   	     #
#									     #
#	----------------------------------------------------------	     #
#	Used in Box 13-1, Fig 13-1					     #
#									     #
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Format of the files: (Box 13-1, Fig 13-1)
	* polis.xls (Microsoft Excel)
	* polis.csv (comma delimeted ascii text file)

File contents:
	* ISLAND - name of islands in the Gulf of California
	* PARATIO - perimeter to area ratio of the islands
	* UTA - presence or absence of lizards (Uta) on the islands (P=present, A=absence)
	* PA - binary representation of presence/absence of lizards (Uta) on the islands (1=present, 0=absent)
	* PREDICT - (used for Fig 13-1b) predicted probability of occurance of lizards from logistic regression of PA against PARATIO