- duration=$(echo "$notified $detect" | awk '{print $1 - $2 }')
- echo "$notified $detect" | \
- awk '{d = $1 - $2; if (d < 1 ) print d " OK"; else print d " NG"}'
+ echo "$notified $detected" | \
+ awk '{d = $1 - $2; if (d < 1 && d > 0) print d " OK"; else print d " NG"}'