hosts="sm-eat-extrasmall-0 sm-eat-extrasmall-1 sm-eat-extrasmall-2 sm-eat-small-0 sm-eat-small-1 sm-eat-small-2 sm-save-extrasmall-0 sm-save-extrasmall-1 sm-save-small-0 sm-save-small-1 sm-save-small-2"

mkdir -p data
for h in $hosts; do
  echo $h 1>&2
  ssh $h.cloudapp.net 'grep apt-in /var/log/cloud-init.log && grep Fetched.*in.*[0-9]s /var/log/cloud-init-output.log' > data/$h
done

fmt="%-30s %7s %4s %5s\n"
printf "$fmt" "#host" total dl inst
for h in $hosts; do
 took=$(sed -n 's,.*took \([^ ]*\)[ ].*,\1,p' data/$h)
 download=$(grep "^Fetched" "data/$h" | tail -n 1 | awk '{print $5}')
 download=${download%s}
 printf "$fmt" $h $took $download $((${took%.*}-$download))
done