def prevN = 0

def remNum = 0

ArrayList remArr = []

for(def item : containers){

if(item['n'] == prevN+0.1){

remNum--

remArr.add(remNum)

}

remNum++

prevN = item['n']

}

for(def rem : remArr){

if(rem < 0)rem = 0

containers.remove(rem)

}