我有import pandas as pd
import numpy as np
df = pd.read_csv("Data_set.csv", sep='\s*', names=["month", "day", "time", "Temperature"])
group=df.groupby(["month","day"])
daily=group.aggregate({"Temperature":np.mean})
daily.to_csv('daily.csv')
Date Time T1 T2 T3
17/12/2013 00:28:38 19 23.1 7.3
17/12/2013 00:58:38 19 22.9 7.3
17/12/2013 01:28:38 18.9 22.8 6.3
17/12/2013 01:58:38 18.9 23.1 6.3
17/12/2013 02:28:38 18.8 23 6.3
.....
.....
24/12/2013 19:58:21 14.7 15.5 7
24/12/2013 20:28:21 14.7 15.5 7
24/12/2013 20:58:21 14.7 15.5 7
24/12/2013 21:28:21 14.7 15.6 6
24/12/2013 21:58:21 14.7 15.5 6
24/12/2013 22:28:21 14.7 15.5 5
24/12/2013 22:58:21 14.7 15.5 4
或MA14等字符串，我必须找到MD22b和MA之间的索引。