Obs    X            Y
1    0.5  6.276632667
2    1.0  5.770310796
3    1.5  6.711390406
4    2.0  6.713999918
5    2.5  7.155306977
6    3.0  7.413804355
7    3.5  7.540227561
8    4.0  8.739530378
9    4.5  9.053461988
10   5.0 11.170017020
11   5.5  9.703200436
12   6.0 10.042241800
13   6.5 14.523774440
14   7.0 13.558969790
15   7.5 14.122192190
16   8.0 15.577164100
17   8.5 18.865010630
18   9.0 18.134627850
19   9.5 18.598994670
20  10.0 18.260549020
21  10.5 20.510976900
22  11.0 23.915406970
23  11.5 24.635297050
24  12.0 23.443177890
25  12.5 25.020339800
26  13.0 25.162320440
27  13.5 27.609654380
28  14.0 30.535841340
29  14.5 28.478532920
30  15.0 30.425606140
31  15.5 29.062515000
32  16.0 26.577529710
33  16.5 28.377856430
34  17.0 26.341861300
35  17.5 24.030489310
36  18.0 24.535734120
37  18.5 22.613354600
38  19.0 20.230653760
39  19.5 21.483089790
40  20.0 20.446845060
41  20.5 21.293254120
42  21.0 16.319350670
43  21.5 16.433437650
44  22.0 16.191748990
45  22.5 16.194295060
46  23.0 15.508464470
47  23.5 13.147080940
48  24.0 12.531782610
49  24.5 11.889464350
50  25.0  8.615631284
51  25.5 10.322484410
52  26.0  8.294951034
53  26.5  7.237967573
54  27.0  7.014919280
55  27.5  4.749773369
56  28.0  5.277039324
57  28.5  5.603092488
58  29.0  2.055407588
59  29.5  3.411292531
60  30.0 -0.003063713
61  30.5 -0.623953658
62  31.0  2.949639417
63  31.5  2.205283165
64  32.0  3.931148213
65  32.5  4.040165120
66  33.0  4.439433455
67  33.5  7.873080587
68  34.0  5.943494370
69  34.5  9.966283195
70  35.0 11.513803390
71  35.5 11.191114910
72  36.0 12.136231770
73  36.5 12.120016700
74  37.0 13.141034890
75  37.5 15.761126990
76  38.0 15.862877180
77  38.5 17.262034900
78  39.0 18.745567420
79  39.5 19.100821460
80  40.0 20.766825100
81  40.5 20.719242560
82  41.0 20.249204290
83  41.5 23.167313200
84  42.0 24.053542090
85  42.5 24.634246540
86  43.0 25.832840030
87  43.5 27.296018900
88  44.0 27.306286320
89  44.5 28.240182710
90  45.0 30.691593410
91  45.5 31.874695860
92  46.0 32.611391120
93  46.5 33.597719780
94  47.0 34.323331170
95  47.5 35.276012280
96  48.0 36.995627290
97  48.5 36.815202850
98  49.0 39.294214340
99  49.5 38.368684950
100 50.0 39.096057060