import numpy as np

d=np.load("npdata12.npy")
print(d)
print("\n\nG1")

g1 = d[d[:, 0] == 1][:,1]
print(g1.mean())

print(g1.shape)

# print(head(d))



M = np.array([[1,2,3], [4,5,6]])

r = M[:,[1,0,2,1]]

# print(r)