import numpy as np
c = np.array(
[ 15 # (x**0
, 1 # x**1
, -6 # x**2
, 0 # x**3
, 0 # x**4
, 0 # x**5
, 0 # x**6)
, 1 # *c*exp(
, -1 # c
, 0 # (r - c))
, -1 # + c*exp(
, -.1 # c
, 2 # (r - c))
, -4 # + c*exp(
, -0.05 # c
, 40 # (r - c)**2)
, 10 # + c*exp(
, 20 # (r - c)**2)
, 1] # dt
, dtype=np.float16)