1. xa = np.array([ 1.66721938e+01, -3.93667954e+00, -1.38000418e+00, -2.37268510e+00,
2.        -9.25064248e-01, -1.08349023e+00, -1.98170004e+00, -8.68939887e-01,
3.        -1.36282760e+00, -6.30580129e-01, -1.79563926e+00, -1.21377961e+00,
4.         3.12215610e+00, -1.82676631e+00, -2.05833888e+00, -2.69087600e-01,
5.        -1.22588953e+00, -2.46203367e+00, -1.15565096e+00,  2.87082787e+00,
6.        -1.65303888e+00,  2.01754751e-01,  5.69873826e-01,  1.28975681e+00,
7.        -1.87221203e+00, -6.18453641e-01, -1.19437643e+00, -6.69572890e-01,
8.         7.36073578e-02, -6.03329774e-01, -8.91021617e-01,  6.96921085e-01,
9.         2.15408712e+00,  4.84463817e-01,  2.60378735e+00,  2.68621828e+00,
10.         5.23062307e-01, -2.39548315e+00, -1.70154731e+00, -8.11072928e-01,
11.        -7.90034906e-01, -1.84648573e+00, -1.58467588e+00,  1.83766401e+00,
12.        -9.94016614e-01,  1.04835625e+00,  1.64673735e-01, -1.58742805e+00,
13.         2.71309843e+00,  1.11826350e+00, -4.27987461e-01, -7.61693363e-01,
14.        -3.13807935e+00, -8.80045523e-01,  1.12012689e+00, -9.98711089e-01,
15.         3.95678674e-01, -5.30845348e-01, -2.87221453e+00,  3.51586436e-01,
16.         9.37984838e-01, -4.15411087e+00, -1.17305018e+00,  6.56615900e-01,
17.        -5.99794889e-01, -2.66189807e+00, -1.34339916e+00, -1.06354629e+00,
18.         4.54410003e+00, -5.62185521e-01, -6.35259389e-01,  1.29942355e+00,
19.         1.72403933e-01, -1.88610020e+00,  2.64578994e-02,  3.82948098e-01,
20.         9.14033084e-01,  1.66131094e+00,  1.68561237e-01, -1.38702537e+00,
21.        -3.01746240e-01, -1.56810362e+00,  1.63362267e+00, -1.70089996e+00,
22.         1.65696553e-01, -4.60916524e-01, -9.13813637e-01, -3.06639802e-02,
23.         6.65620986e-01, -1.45289429e+00,  1.47042956e-01, -1.93406348e+00,
24.        -2.12601769e+00, -3.52563450e-01, -1.33170132e+00, -5.15825075e-01,
25.        -1.80826724e-01,  1.07500872e+00, -8.47503500e-01,  2.12766289e+00,
26.         7.26119658e-01, -6.40076598e-01, -1.18456087e+00, -1.45093106e+00,
27.         2.65995244e+00,  1.03837514e+00, -9.90802328e-01, -1.94472199e+00,
28.        -1.17013686e+00,  8.52912059e-01,  1.07428914e+00,  1.44367040e+00,
29.        -9.78692329e-01, -1.01103302e+00, -1.48550659e+00, -1.07361094e+00,
30.        -9.03351607e-01, -1.02771622e+00,  1.24430623e+00, -9.32711122e-01,
31.        -1.52592109e+00, -6.81075961e-01, -1.15044801e+00, -1.05216080e+00,
32.        -1.28201366e+00, -7.26603939e-01,  1.31009440e+00,  2.42823564e+00,
33.        -2.08382393e+00,  9.85121935e-01, -1.42985792e+00, -2.39857855e+00,
34.        -1.30613307e+00,  1.38675088e+00, -5.57311546e-02, -1.80927899e+00,
35.        -1.94638620e-01, -2.00599404e+00,  6.34531407e-01,  1.08285551e+00,
36.        -6.24134139e-01,  8.49655816e-01, -2.00182849e+00,  1.14942518e+00,
37.        -1.70655216e+00, -1.59221951e+00,  2.99565140e-01,  1.94363403e+00,
38.         7.41987608e-01, -8.68860529e-01, -1.36395013e-01,  1.10392396e-01,
39.         1.11906167e+00, -1.29315250e+00, -8.10622789e-01,  2.20544239e+00,
40.        -2.56446148e-01,  9.74509348e-01,  1.83640664e+00, -6.34986472e-01,
41.         3.41595569e+00,  1.92956455e+00, -5.63815482e-01,  2.12277316e-01,
42.         1.19528892e+00,  2.10237058e+00,  1.46044034e+00,  4.06119859e-02,
43.        -1.52366398e+00,  7.11862626e-01, -9.81017566e-01, -4.89601138e-01,
44.        -1.15136994e-01, -3.42265196e-02,  2.97455637e+00,  1.88360882e-02,
45.        -6.94169208e-01,  4.82674084e-01, -9.24795657e-01, -2.07781625e+00,
46.         1.12426341e+00, -2.20054417e+00, -1.32635020e+00, -4.39914914e-01,
47.        -1.93487986e+00, -1.30119135e+00, -1.65805322e-01,  8.53975202e-01,
48.        -1.16178729e+00,  1.63612842e+00,  5.07510040e-01, -1.58424173e+00,
49.        -3.06036943e+00,  2.66714097e+00, -1.30495069e+00, -4.76432070e+00,
50.         1.13313757e+00, -1.97798821e-02, -1.87713959e-01, -4.62698931e-01,
51.         1.77875968e+00, -2.01172343e+00,  4.75070084e-01, -2.08720113e-01,
52.        -3.72921331e-01,  1.74992617e+00, -1.01174045e+00, -1.39077626e+00,
53.        -1.49685310e+00, -8.31001751e-01, -3.11972672e-01,  4.49488780e-01,
54.         9.02447032e-01, -1.37002474e+00,  2.32134027e+00,  1.17921782e+00,
55.        -2.73773330e+00,  4.06328340e-01, -1.42117941e+00, -1.14740878e+00,
56.         1.56307724e+00,  1.64062192e+00, -1.68821624e+00, -1.59514289e+00,
57.         5.65638016e-01,  1.94983373e+00,  9.20944285e-01, -2.56945396e-01,
58.         1.24182507e+00,  2.62860946e+00, -1.65222163e+00,  1.85378299e+00,
59.        -4.75847123e-01,  1.05182846e-01,  1.50286068e+00,  1.05460070e-01,
60.         2.22694079e+00, -4.90842873e-01, -1.63078949e+00,  1.26558601e-01,
61.         6.67631447e-01,  4.38137510e-01, -7.43658144e-01, -2.70641008e-02,
62.         1.33411009e+00, -4.68489878e-01, -1.34774840e+00,  4.43143515e-01,
63.        -5.44185794e-01, -6.34273040e-01,  2.45599082e+00,  9.69357857e-01,
64.         1.80233072e+00, -3.72293314e-01, -2.12155142e+00,  4.71618543e-01,
65.         1.24848331e+00,  4.18273920e+00, -1.84831955e+00,  2.49852365e-01,
66.         1.85168008e+00,  2.62100755e+00,  7.15762999e-01, -8.99911257e-01,
67.        -1.60810065e+00,  1.38575685e-01,  8.97038283e-02, -3.07182011e-01,
68.        -1.38414960e+00,  3.32295659e-01,  1.39011752e+00,  2.33609245e-01,
69.         6.25589072e-01,  2.89110917e+00, -4.73418604e-01, -1.02037953e+00,
70.         2.07798780e+00,  1.72388371e+00, -1.47493165e+00, -5.51007609e-01,
71.         1.13539717e+00,  4.40507054e-01,  5.11853769e-01, -3.85792595e+00,
72.         1.70459339e+00,  2.23717625e-01,  9.08661923e-01,  2.78614674e+00,
73.         8.94210753e-01,  2.04423881e+00,  5.91877004e-01, -1.83194369e+00,
74.         1.27732208e+00, -7.19296261e-01, -6.20801228e-01,  9.78627901e-01,
75.         5.49871076e-01,  3.83942801e-01,  1.87778203e+00,  2.03971859e+00,
76.         1.28777968e+00,  3.23074193e+00, -1.14877354e+00, -5.05387005e-01,
77.         2.49330496e+00, -4.54209705e-01,  6.97626279e-01, -1.98361890e-01,
78.        -4.59279959e-01,  2.36283333e+00,  1.67205305e+00, -1.60718437e+00,
79.        -1.19019314e+00,  1.47720739e+00,  4.17979636e-01,  5.48749469e-01,
80.        -1.34168268e+00, -2.64490054e-01, -2.32506067e+00, -1.24607617e+00,
81.        -3.17221324e-01, -1.19014185e-02, -9.23489752e-01,  1.56192336e+00,
82.        -7.51228292e-01,  1.17383668e+00, -1.07308352e+00, -1.70722488e+00,
83.        -6.51433019e-02,  3.08293356e-01,  8.56832337e-01, -1.21711282e+00,
84.        -2.10734967e+00,  1.86743346e+00,  1.40173261e-01,  2.73352450e-01,
85.        -5.02832606e-01, -3.85976761e-02, -1.75885424e+00, -2.44800662e+00,
86.        -1.46780581e+00,  4.81309279e-01,  8.43255162e-01, -1.02395925e+00,
87.         9.69730689e-01,  1.10703087e+00, -6.46368396e-01, -7.13082182e-01,
88.         5.67573690e-01,  1.20936137e-01,  9.03041224e-01, -2.38393780e-01,
89.         1.13475987e+00, -1.69956908e+00,  2.01693360e+00, -8.29377378e-01,
90.        -2.14447753e+00,  2.12706343e+00, -1.56033101e+00, -2.82526510e+00,
91.         2.72341368e-01, -3.27500222e-02, -4.74883035e-01, -8.30167593e-02,
92.         9.92964182e-01,  5.83853237e-01, -1.86419438e-01, -1.25007063e+00,
93.        -1.76189606e+00, -2.08547261e+00,  1.40049374e+00, -1.09162903e+00,
94.         1.15281196e+00,  3.48835177e-01, -1.19434160e+00, -9.25327963e-01,
95.         1.03101930e+00, -2.58531263e-01, -1.33596826e+00, -6.71424696e-01,
96.         7.34263152e-01,  1.91168080e+00,  2.19940797e+00,  1.18161070e+00,
97.        -1.36443605e-01,  1.16805814e+00, -1.26038403e+00,  6.69129707e-01,
98.        -1.60212702e+00,  1.52389658e-01, -1.16367000e-01, -1.19156649e+00,
99.        -1.01003644e+00, -1.89600670e-01, -9.57239168e-01, -5.88111283e-01,
100.         2.14654626e+00, -4.66415753e-01,  2.38478928e+00,  1.91155844e-01,
101.         1.97243329e+00, -7.97562714e-01, -2.09877995e-01,  1.21600070e+00,
102.        -5.74495821e-01,  6.74579523e-01,  2.20897737e+00, -6.18824995e-01,
103.        -1.61162233e-01, -3.04965228e-01,  1.37506454e+00, -4.03761206e-01,
104.         1.31423519e+00, -8.88002353e-01, -1.69243433e+00,  5.01908810e-01,
105.         3.25018596e-01, -6.64617181e-02, -9.74915178e-01,  8.46104441e-01,
106.        -1.74615595e+00, -4.39268722e-01, -2.08940172e+00, -7.45715760e-01,
107.         1.13953324e+00,  1.70264829e+00, -9.18218790e-01, -2.05484907e+00,
108.        -1.23698273e+00,  2.40471766e+00, -4.92398267e-01, -1.15589236e+00,
109.         6.89218942e-01, -1.47000511e+00,  5.35175048e-01, -3.99692514e-01,
110.        -2.15626957e+00,  1.30906767e+00, -1.36918373e+00, -8.08183837e-01,
111.        -1.31069001e+00,  2.92482732e+00, -1.04854952e+00,  1.93057280e+00,
112.         3.87512414e-01, -1.83699723e+00,  4.35465931e-02, -1.03604895e+00,
113.         1.83543935e+00, -1.02269856e+00, -1.48624329e+00,  1.75793858e-01,
114.         7.40179740e-01,  4.57687725e-01, -6.88274910e-01,  1.01119860e+00,
115.        -1.24235354e+00, -3.89547054e-01, -1.07237244e-01, -3.07464025e-01,
116.        -5.26256884e-01,  1.47602706e+00, -2.53610875e-01, -1.44650390e+00,
117.        -1.67016305e+00, -2.04384356e+00,  1.38312430e+00, -6.13491092e-01,
118.         1.27277052e+00,  1.81685332e+00,  2.47509136e+00,  6.97186083e-01,
119.        -1.56238062e+00,  2.91152463e+00, -2.42773365e-01, -1.40264949e+00,
120.         3.64538808e-01,  2.60125421e-01,  2.05043858e-01, -2.73906006e-01,
121.        -1.93404051e+00,  2.06738311e+00, -1.65824879e+00, -3.58776729e-01,
122.         3.07007282e-01, -7.99206740e-01,  1.88344026e-01,  1.31509997e+00,
123.         8.26028886e-01, -1.01699730e+00,  1.83361427e+00, -1.85881035e+00,
124.         2.15832709e+00,  1.44844074e+00, -1.64204810e+00, -1.01263935e+00,
125.         1.77665683e+00, -2.52734870e-01,  2.59773524e+00,  2.17283275e-01])