求助，如何比较浮点型数组内的值

[微笑的倒霉熊]

脚本如下:
#!/bin/bash
declare -a ab
ab=(40.47 41.07 40.83 9.70 40.72 40.81 40.61 40.93 41.20 40.41 40.99 41.11 40.82)
echo "${ab[@]}"
for i in ${ab[@]}
do
if [ ${fps[i]} < 24 ];then
echo doo
else echo dee
fi
done
运行后出现报错
[root@node72 home]# ./1.sh
40.47 41.07 40.83 9.70 40.72 40.81 40.61 40.93 41.20 40.41 40.99 41.11 40.82
./1.sh: line 7: 40.47: syntax error: invalid arithmetic operator (error token is ".47")
请问各位大神，我想在if判断中逐个取出数组内的值并进行if判断，这个该如何求解？

[微笑的倒霉熊]

没人回答我自己回答吧。echo | awk -v a=${fps[i]} '{print a<24?"lost":"get"}'