1、有多个列表，

a = [(1,2), (10, 80), (17, 110), (32, 200)...]
b = [(0,2), (5, 100), (27, 120), (31, 210)...]
c = [(6,2), (17, 90), (18, 110), (39, 250)...]
d = [(4,2), (13, 100), (25, 110), (42, 400)...]
e = [(2,2), (11, 100), (25, 110), (40, 360)...]
...

转换为曲线后如图所示：

每个tuple可以理解为横纵坐标，运用什么方法可以将归一化后的数据得到一条平均曲线？