frequency (Hz)	mean_U (m/s)	std_U (m/s)	n
20	0.0554341714643043	0.0196603653840343	3
25	0.0529947086932146	0.0139271428294847	4
30	0.0586145224752309	0.00992151424444705	4
35	0.0676492648919003	0.00919989758633635	3
40	0.074661147983693	0.00825489938812259	3
45	0.0715049598679206	0.00538935854401529	3
50	0.0673574076771594	0.005629737789514	3
55	0.0591657490857273	0.00702434254819344	3
60	0.0537340641536731	0.0111700534366336	3
