#!/usr/bin/ksh

#sed1 remove blank lines
#sed2 change 'k' into 000 (for digital unix)
#tr remove ascii chars
#sed4 remove some meta chars
#awk main prog

if [[ -f $1 ]]
then
	CMD1="sed \-e '/^$/d' $*"
else
	CMD1="sed \-e '/^$/d'"
fi

eval $CMD1 \
| sed -e '/[0-9]k/s/k/000/g' \
| sed -e '/[a-z,A-Z]/s///g' \
| sed -e 's/[-:/%<>]//g' \
| awk  '{   maxfld=NF
			for (i=1; i <= maxfld; i++)
			{
				sum[i] += $i 
				if( $i > max[i]) 
					max[i] = $i
				if( $i < min[i]) 
					min[i] = $i
			}
		}
	END { print ("Field        Max            Min            Sum            Avg")
			for (i=1; i <= maxfld; i++)
			printf ("%2d    %10.2f     %10.2f     %10.2f     %10.4f\n", \
				i, max[i], min[i], sum[i], sum[i]/NR)
		}'