Question: 蓝思科技2024年04月06日至2025年01月16日的詹森阿尔法的值是？（默认无风险利率为0；收益率需年化（用复合年化收益率），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: \alpha = AnnRet - [rf + \beta * (AnnRet_m - rf)]；\beta = cov(r, r_m) / var(r_m)
Data:
date,close,market_close
2024-04-03,13.93,3567.8
2024-04-08,13.77,3536.41
2024-04-09,13.72,3533.49
2024-04-10,13.4,3504.71
2024-04-11,13.26,3504.24
2024-04-12,13.48,3475.84
2024-04-15,13.64,3549.08
2024-04-16,13.07,3511.11
2024-04-17,13.63,3565.4
2024-04-18,13.67,3569.8
2024-04-19,13.61,3541.66
2024-04-22,13.65,3530.9
2024-04-23,13.6,3506.22
2024-04-24,13.47,3521.62
2024-04-25,13.5,3530.28
2024-04-26,13.97,3584.27
2024-04-29,14.34,3623.91
2024-04-30,14.31,3604.39
2024-05-06,14.78,3657.88
2024-05-07,14.69,3659.01
2024-05-08,14.4,3630.22
2024-05-09,14.5,3664.56
2024-05-10,14.35,3666.28
2024-05-13,14.67,3664.69
2024-05-14,14.74,3657.05
2024-05-15,14.44,3626.06
2024-05-16,14.68,3640.36
2024-05-17,14.75,3677.97
2024-05-20,14.65,3690.96
2024-05-21,14.9,3676.16
2024-05-22,15.27,3684.45
2024-05-23,14.9,3641.79
2024-05-24,14.73,3601.48
2024-05-27,15.19,3635.71
2024-05-28,14.9,3609.17
2024-05-29,14.93,3613.52
2024-05-30,15.15,3594.31
2024-05-31,15.3,3579.92
2024-06-03,15.52,3588.75
2024-06-04,15.43,3615.67
2024-06-05,15.84,3594.79
2024-06-06,15.86,3592.25
2024-06-07,15.64,3574.11
2024-06-11,15.57,3542.88
2024-06-12,15.55,3544.12
2024-06-13,15.87,3526.13
2024-06-14,16.15,3541.53
2024-06-17,17.0,3536.2
2024-06-18,17.25,3545.59
2024-06-19,17.21,3528.75
2024-06-20,17.18,3503.28
2024-06-21,17.62,3495.62
2024-06-24,17.35,3476.81
2024-06-25,16.94,3457.9
2024-06-26,17.55,3480.26
2024-06-27,17.94,3454.12
2024-06-28,18.25,3461.66
2024-07-01,18.16,3478.18
2024-07-02,17.69,3471.79
2024-07-03,17.85,3463.41
2024-07-04,18.41,3445.81
2024-07-05,17.74,3431.06
2024-07-08,17.84,3401.76
2024-07-09,19.46,3439.81
2024-07-10,19.57,3428.97
2024-07-11,19.86,3468.17
2024-07-12,19.69,3472.4
2024-07-15,19.53,3476.25
2024-07-16,20.44,3498.28
2024-07-17,19.49,3501.58
2024-07-18,19.05,3520.93
2024-07-19,18.68,3539.02
2024-07-22,18.6,3514.92
2024-07-23,17.88,3439.88
2024-07-24,17.57,3418.17
2024-07-25,17.31,3399.27
2024-07-26,17.68,3409.29
2024-07-29,17.79,3390.74
2024-07-30,17.58,3369.38
2024-07-31,17.85,3442.08
2024-08-01,17.97,3419.27
2024-08-02,17.74,3384.39
2024-08-05,16.5,3343.32
2024-08-06,16.9,3342.98
2024-08-07,16.63,3341.49
2024-08-08,16.85,3342.94
2024-08-09,17.03,3331.63
2024-08-12,17.12,3325.86
2024-08-13,17.14,3334.39
2024-08-14,16.91,3309.24
2024-08-15,16.79,3341.95
2024-08-16,17.0,3345.63
2024-08-19,17.0,3356.97
2024-08-20,17.01,3332.7
2024-08-21,17.35,3321.64
2024-08-22,17.21,3313.14
2024-08-23,17.33,3327.19
2024-08-26,17.0,3324.22
2024-08-27,16.41,3305.33
2024-08-28,16.54,3286.5
2024-08-29,16.83,3277.68
2024-08-30,17.57,3321.43
2024-09-02,17.16,3265.01
2024-09-03,16.9,3273.43
2024-09-04,16.38,3252.16
2024-09-05,16.18,3257.76
2024-09-06,15.8,3231.35
2024-09-09,15.76,3192.95
2024-09-10,15.8,3195.76
2024-09-11,15.72,3186.13
2024-09-12,15.37,3172.47
2024-09-13,15.39,3159.25
2024-09-18,15.0,3171.01
2024-09-19,15.09,3196.04
2024-09-20,15.35,3201.05
2024-09-23,15.17,3212.76
2024-09-24,16.06,3351.91
2024-09-25,16.22,3401.53
2024-09-26,16.67,3545.32
2024-09-27,17.65,3703.68
2024-09-30,20.45,4017.85
2024-10-08,24.29,4256.1
2024-10-09,21.19,3955.98
2024-10-10,21.51,3997.79
2024-10-11,20.08,3887.17
2024-10-14,21.35,3961.34
2024-10-15,20.84,3855.99
2024-10-16,20.62,3831.59
2024-10-17,21.04,3788.22
2024-10-18,22.52,3925.23
2024-10-21,23.21,3935.2
2024-10-22,23.85,3957.78
2024-10-23,23.26,3973.21
2024-10-24,23.11,3928.83
2024-10-25,22.71,3956.42
2024-10-28,22.72,3964.16
2024-10-29,22.88,3924.65
2024-10-30,22.64,3889.45
2024-10-31,22.55,3891.04
2024-11-01,21.51,3890.02
2024-11-04,22.0,3944.76
2024-11-05,22.77,4044.57
2024-11-06,22.14,4024.28
2024-11-07,22.28,4145.7
2024-11-08,22.01,4104.05
2024-11-11,22.83,4131.13
2024-11-12,23.7,4085.74
2024-11-13,23.01,4110.89
2024-11-14,22.4,4039.62
2024-11-15,21.7,3968.83
2024-11-18,21.07,3950.38
2024-11-19,21.69,3976.89
2024-11-20,21.34,3985.77
2024-11-21,21.08,3989.3
2024-11-22,20.16,3865.7
2024-11-25,19.8,3848.09
2024-11-26,19.9,3840.18
2024-11-27,21.07,3907.04
2024-11-28,20.69,3872.55
2024-11-29,20.65,3916.58
2024-12-02,21.71,3947.63
2024-12-03,21.69,3951.89
2024-12-04,21.4,3930.56
2024-12-05,21.15,3921.59
2024-12-06,21.95,3973.14
2024-12-09,21.7,3966.57
2024-12-10,22.13,3995.64
2024-12-11,22.43,3988.83
2024-12-12,22.31,4028.5
2024-12-13,21.98,3933.18
2024-12-16,21.99,3911.84
2024-12-17,22.05,3922.03
2024-12-18,22.15,3941.89
2024-12-19,22.72,3945.46
2024-12-20,22.74,3927.74
2024-12-23,22.17,3933.57
2024-12-24,22.48,3983.69
2024-12-25,22.07,3985.63
2024-12-26,22.17,3987.48
2024-12-27,21.96,3981.03
2024-12-30,22.42,3999.05
2024-12-31,21.9,3934.91
2025-01-02,21.02,3820.4
2025-01-03,20.66,3775.16
2025-01-06,20.5,3768.97
2025-01-07,21.95,3796.11
2025-01-08,21.58,3789.22
2025-01-09,22.14,3779.88
2025-01-10,22.94,3732.48
2025-01-13,22.35,3722.51
2025-01-14,26.6,3820.54
2025-01-15,23.79,3796.03
2025-01-16,23.69,3800.38

Indicator data:
Answer: 0.8057