x(cm)	10T (s)
40	20,463
35	20,281
30	20,134
25	20,014
20	19,926
15	19,866
10	19,832
5	19,822
0	19,832
-5	19,864
-10	19,919
-15	19,989
-20	20,079
-25	20,184
-30	20,302
-35	20,433
-40	20,580

x(cm)	10T (s)
25	20.015
25.5	20.024
26	20.037
26.5	20.049
27	20.057
27.5	20.071
28	20.082
28.5	20.095
29	20.107
29.5	20.118
30	20.132

hiba:(E_1, 25cm)
20.015
20.016
20.015
20.015
20.015