channel_list = []
chnamelist=[]
i=0
for key, value in df.items():
    channel = {}
    channel['name'] = key
    channel['unit'] = unitlist[i]
    channel['dataType'] ='STRING'
    chnamelist.append(key)
    i=i+1
    channel['dataValues'] = list(value)
    channel_list.append(channel)
