ADR统计5天（5days）、昨天（yesterday）、过去一周（weekly）、过去一个月（monthly）和过去180天（180days）的平价波动大小。这个指标主要用于短线交易，一般情况下，没有重大的财经事件，当天的价格波动不会过于偏离最近几天的平均波动幅度。(ADR measures parity fluctuations over five days, yesterday, week, month and 180 days. This indicator is mainly used for short-term trading, in general, without major financial events, the day's price fluctuations will not be too far away from the average volatility of recent days.)