fetch a url a number of times, spit out csv

fetch.sh

#!/bin/bash
echo -n "url to measure: "
read url
URL="$url"
echo -n "How many times to fetch? "
read loop
NOWD=$(date +"%Y-%m-%d")
clean_var()
{
        INVAR=$1
        VARLEN=${#INVAR}
        VAR=$(echo -ne "$RESPONSE" | grep -m 1 "$INVAR")
        VAR=${VAR:VARLEN}
        # below ^M is enetered in vi/vim using ctrl+v then ctrl+M
        VAR=${VAR/^M/}
        VAR=${VAR/ /}
        VAR=${VAR:="Nan"}
        echo -n "$VAR"
}

for (( c=1; c<=$loop; c++ ))
do
 NOWT=$(date +"%T")
 RESPONSE=$(curl -j -D - -o /dev/null -L -A "Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3" --header "X-Forwarded-For: 192.102.214.4" --connect-timeout 90 -m 120 --silent --progress-bar --write-out 'STATS%{time_namelookup},%{time_connect},%{time_starttransfer},%{time_total},%{http_code},%{size_header},%{size_download},%{speed_download},%{url_effective}' ${URL})
 XHOST=`clean_var X-Host:`
 XVERSION=`clean_var X-Version:`
 STATS=$(echo "$RESPONSE" | grep "STATS")
 STATS=${STATS:5}
 printf "$NOWD,$NOWT,$XHOST,$XVERSION,$STATS,$URL\n" >> ./$NOWD.csv
done