Question: 对于2025年03月10日-2025年12月30日的马丁比率，用友网络的值是？（分子分母都需年化，A股按一年242个交易日）使用不复权价格，写出指标公式，搜集原始数据，计算得出答案，保留四位小数。注意列出原始数据和关键计算过程。
Formula: Martin = AnnRet / (UI * \sqrt{242})
Data:
date,close
2025-03-10,18.03
2025-03-11,17.89
2025-03-12,17.63
2025-03-13,17.68
2025-03-14,17.36
2025-03-17,17.1
2025-03-18,17.14
2025-03-19,16.61
2025-03-20,16.51
2025-03-21,15.81
2025-03-24,15.63
2025-03-25,15.55
2025-03-26,15.8
2025-03-27,15.43
2025-03-28,15.42
2025-03-31,15.06
2025-04-01,14.87
2025-04-02,14.99
2025-04-03,14.81
2025-04-07,13.33
2025-04-08,13.1
2025-04-09,13.49
2025-04-10,13.61
2025-04-11,13.79
2025-04-14,13.9
2025-04-15,13.77
2025-04-16,13.59
2025-04-17,13.88
2025-04-18,13.55
2025-04-21,14.19
2025-04-22,13.75
2025-04-23,13.83
2025-04-24,13.52
2025-04-25,13.7
2025-04-28,13.62
2025-04-29,13.82
2025-04-30,14.59
2025-05-06,14.76
2025-05-07,14.51
2025-05-08,14.5
2025-05-09,13.96
2025-05-12,14.16
2025-05-13,14.15
2025-05-14,14.19
2025-05-15,13.47
2025-05-16,13.33
2025-05-19,13.3
2025-05-20,13.34
2025-05-21,13.21
2025-05-22,13.12
2025-05-23,12.92
2025-05-26,13.19
2025-05-27,13.15
2025-05-28,12.95
2025-05-29,13.48
2025-05-30,13.05
2025-06-03,13.04
2025-06-04,13.2
2025-06-05,13.62
2025-06-06,13.71
2025-06-09,14.46
2025-06-10,13.74
2025-06-11,13.52
2025-06-12,13.31
2025-06-13,13.07
2025-06-16,13.06
2025-06-17,13.01
2025-06-18,12.91
2025-06-19,12.73
2025-06-20,12.4
2025-06-23,12.72
2025-06-24,12.86
2025-06-25,13.15
2025-06-26,13.16
2025-06-27,13.1
2025-06-30,13.37
2025-07-01,13.1
2025-07-02,12.97
2025-07-03,12.96
2025-07-04,12.83
2025-07-07,12.8
2025-07-08,13.09
2025-07-09,12.99
2025-07-10,12.96
2025-07-11,13.55
2025-07-14,13.13
2025-07-15,14.44
2025-07-16,14.4
2025-07-17,14.29
2025-07-18,14.33
2025-07-21,14.24
2025-07-22,13.92
2025-07-23,14.17
2025-07-24,14.46
2025-07-25,14.65
2025-07-28,14.36
2025-07-29,14.88
2025-07-30,14.66
2025-07-31,15.84
2025-08-01,15.77
2025-08-04,15.99
2025-08-05,15.71
2025-08-06,15.6
2025-08-07,16.37
2025-08-08,14.94
2025-08-11,15.41
2025-08-12,15.22
2025-08-13,15.11
2025-08-14,14.81
2025-08-15,15.28
2025-08-18,16.4
2025-08-19,16.48
2025-08-20,16.5
2025-08-21,16.55
2025-08-22,17.17
2025-08-25,17.3
2025-08-26,17.13
2025-08-27,16.46
2025-08-28,16.7
2025-08-29,16.47
2025-09-01,16.24
2025-09-02,15.44
2025-09-03,14.92
2025-09-04,14.59
2025-09-05,14.75
2025-09-08,14.64
2025-09-09,14.29
2025-09-10,14.55
2025-09-11,15.37
2025-09-12,15.03
2025-09-15,14.81
2025-09-16,14.7
2025-09-17,15.28
2025-09-18,14.98
2025-09-19,14.84
2025-09-22,14.92
2025-09-23,14.13
2025-09-24,14.83
2025-09-25,15.81
2025-09-26,15.03
2025-09-29,15.32
2025-09-30,15.62
2025-10-09,16.36
2025-10-10,15.3
2025-10-13,15.76
2025-10-14,15.32
2025-10-15,15.27
2025-10-16,14.84
2025-10-17,14.26
2025-10-20,14.37
2025-10-21,14.49
2025-10-22,14.28
2025-10-23,14.45
2025-10-24,14.5
2025-10-27,14.55
2025-10-28,15.0
2025-10-29,14.99
2025-10-30,15.04
2025-10-31,15.6
2025-11-03,15.71
2025-11-04,15.58
2025-11-05,15.2
2025-11-06,14.95
2025-11-07,14.66
2025-11-10,14.87
2025-11-11,14.57
2025-11-12,14.27
2025-11-13,14.47
2025-11-14,14.25
2025-11-17,14.66
2025-11-18,14.96
2025-11-19,14.81
2025-11-20,14.38
2025-11-21,13.96
2025-11-24,14.78
2025-11-25,14.86
2025-11-26,14.67
2025-11-27,14.26
2025-11-28,14.26
2025-12-01,14.22
2025-12-02,13.88
2025-12-03,13.35
2025-12-04,13.13
2025-12-05,13.39
2025-12-08,13.5
2025-12-09,13.4
2025-12-10,13.22
2025-12-11,12.93
2025-12-12,12.89
2025-12-15,12.66
2025-12-16,12.28
2025-12-17,12.73
2025-12-18,12.58
2025-12-19,12.6
2025-12-22,12.69
2025-12-23,12.61
2025-12-24,12.71
2025-12-25,13.04
2025-12-26,12.88
2025-12-29,12.92
2025-12-30,13.1

Indicator data:
Answer: -0.0975