#!/bin/bash

rm -f sample.csv

for i in `ls -1 *csv | sort -V`
  do AZ=`echo $i | cut -f 2 -d "-"`
  SAMPLE=`grep ", 400000000, " $i | head -1 | cut -f 7 -d " " | sed -e 's/,//g'`
  echo "$AZ, $SAMPLE" >> sample.csv
done

cat sample.csv