Question: 统计合盛硅业在2020年11月19日到2021年09月10日间，最低价大于60日简单移动平均线的天数占比（%）。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: SMA_n = 1 / n * \sum_{i=0}^{n-1} P_{t-i}
Data:
date,close,low,open
2020-08-20,30.15,29.47,29.6
2020-08-21,30.18,29.82,30.2
2020-08-24,30.0,29.62,30.1
2020-08-25,29.24,29.18,30.03
2020-08-26,28.82,28.6,29.25
2020-08-27,29.83,28.69,28.69
2020-08-28,29.2,28.69,29.53
2020-08-31,29.31,29.27,29.47
2020-09-01,29.49,29.18,29.52
2020-09-02,29.51,28.85,29.52
2020-09-03,27.98,27.95,29.41
2020-09-04,28.42,27.81,28.23
2020-09-07,28.24,28.12,28.45
2020-09-08,28.74,27.9,28.2
2020-09-09,29.24,28.51,28.72
2020-09-10,28.5,28.14,29.07
2020-09-11,28.53,27.41,28.5
2020-09-14,29.26,28.55,28.55
2020-09-15,29.61,28.9,29.24
2020-09-16,29.87,29.28,29.45
2020-09-17,29.73,29.52,29.6
2020-09-18,29.87,29.13,29.73
2020-09-21,29.8,29.52,29.97
2020-09-22,28.94,28.8,29.6
2020-09-23,29.14,28.69,29.2
2020-09-24,28.24,28.2,29.08
2020-09-25,27.44,27.0,28.27
2020-09-28,27.63,27.37,27.45
2020-09-29,28.15,27.43,27.88
2020-09-30,28.25,28.02,28.47
2020-10-09,29.5,28.51,28.51
2020-10-12,29.97,29.3,29.52
2020-10-13,29.63,29.41,29.84
2020-10-14,29.98,29.48,29.65
2020-10-15,29.75,29.65,30.24
2020-10-16,29.44,29.31,29.95
2020-10-19,29.44,29.35,29.75
2020-10-20,29.26,28.9,29.7
2020-10-21,28.5,28.36,29.34
2020-10-22,28.34,27.91,28.47
2020-10-23,27.88,27.82,28.57
2020-10-26,27.36,27.18,27.7
2020-10-27,28.08,27.24,27.29
2020-10-28,29.26,28.2,28.77
2020-10-29,29.85,28.82,28.82
2020-10-30,30.09,29.42,29.66
2020-11-02,30.78,30.04,30.04
2020-11-03,31.0,30.66,30.98
2020-11-04,32.23,31.11,31.11
2020-11-05,33.13,32.42,32.42
2020-11-06,34.91,33.31,33.65
2020-11-09,38.4,35.0,35.51
2020-11-10,38.23,36.2,39.0
2020-11-11,39.0,37.81,38.0
2020-11-12,40.8,36.65,39.0
2020-11-13,38.9,38.01,40.3
2020-11-16,39.67,38.5,38.5
2020-11-17,39.2,38.44,39.96
2020-11-18,41.16,38.55,39.49
2020-11-19,38.88,37.5,41.18
2020-11-20,38.91,36.72,37.98
2020-11-23,40.47,39.0,39.67
2020-11-24,39.64,38.15,39.51
2020-11-25,40.36,38.89,39.4
2020-11-26,40.3,38.71,39.7
2020-11-27,38.8,38.07,40.01
2020-11-30,39.16,38.48,38.88
2020-12-01,38.72,37.45,38.72
2020-12-02,37.65,37.51,38.66
2020-12-03,37.32,36.45,37.14
2020-12-04,38.06,37.01,37.31
2020-12-07,38.2,37.85,38.79
2020-12-08,38.45,37.6,38.21
2020-12-09,37.99,37.46,38.43
2020-12-10,37.45,36.78,37.49
2020-12-11,37.11,36.31,37.66
2020-12-14,37.93,36.46,36.91
2020-12-15,38.35,37.42,37.91
2020-12-16,36.47,36.46,38.5
2020-12-17,38.16,35.91,37.13
2020-12-18,38.7,37.81,38.2
2020-12-21,40.8,38.91,39.28
2020-12-22,38.87,38.87,40.91
2020-12-23,39.1,38.67,39.37
2020-12-24,39.93,38.16,38.79
2020-12-25,40.5,39.1,40.05
2020-12-28,36.45,36.45,40.4
2020-12-29,32.81,32.81,34.5
2020-12-30,33.58,32.7,32.81
2020-12-31,33.44,32.78,33.37
2021-01-04,33.14,31.11,32.97
2021-01-05,33.38,32.38,33.3
2021-01-06,36.2,33.64,33.64
2021-01-07,36.08,35.26,35.96
2021-01-08,37.62,35.11,35.78
2021-01-11,38.06,35.35,37.19
2021-01-12,37.7,37.05,37.56
2021-01-13,39.8,37.55,37.66
2021-01-14,39.29,38.91,39.8
2021-01-15,38.77,38.0,38.81
2021-01-18,42.65,38.57,38.57
2021-01-19,44.1,43.43,43.85
2021-01-20,45.0,43.0,44.01
2021-01-21,45.25,44.49,44.49
2021-01-22,47.98,44.7,45.13
2021-01-25,46.81,46.03,47.34
2021-01-26,47.75,46.32,46.32
2021-01-27,46.9,44.6,46.26
2021-01-28,43.72,43.6,46.9
2021-01-29,44.29,43.03,44.15
2021-02-01,44.92,44.17,44.88
2021-02-02,45.17,44.0,45.13
2021-02-03,49.69,45.44,45.44
2021-02-04,52.6,50.78,52.0
2021-02-05,48.11,47.86,53.55
2021-02-08,51.32,47.88,48.99
2021-02-09,53.05,50.6,51.61
2021-02-10,51.6,50.32,52.82
2021-02-18,54.0,51.88,55.21
2021-02-19,52.3,50.75,53.83
2021-02-22,51.0,50.68,52.0
2021-02-23,52.73,48.9,49.12
2021-02-24,51.45,50.65,52.19
2021-02-25,51.29,50.91,51.75
2021-02-26,46.6,46.16,49.53
2021-03-01,48.65,47.2,48.0
2021-03-02,48.56,48.36,49.18
2021-03-03,49.27,47.52,49.31
2021-03-04,45.73,45.38,49.37
2021-03-05,46.1,44.05,44.73
2021-03-08,45.5,44.93,46.76
2021-03-09,44.13,43.65,45.58
2021-03-10,46.4,44.0,45.2
2021-03-11,48.56,46.02,46.43
2021-03-12,48.87,47.6,49.35
2021-03-15,46.8,46.4,48.5
2021-03-16,47.56,46.2,46.77
2021-03-17,49.41,45.89,47.66
2021-03-18,52.68,49.48,49.7
2021-03-19,49.35,48.31,51.22
2021-03-22,49.7,48.38,49.35
2021-03-23,47.07,46.5,48.8
2021-03-24,42.36,42.36,46.61
2021-03-25,42.12,41.23,41.64
2021-03-26,43.76,41.91,41.91
2021-03-29,44.66,42.25,43.76
2021-03-30,45.11,44.0,44.66
2021-03-31,44.5,43.83,45.6
2021-04-01,44.33,43.67,44.6
2021-04-02,44.1,43.9,44.99
2021-04-06,44.58,44.14,44.22
2021-04-07,45.39,44.6,45.1
2021-04-08,45.56,45.01,45.4
2021-04-09,44.65,43.57,46.0
2021-04-12,43.56,43.0,45.32
2021-04-13,43.33,43.21,43.9
2021-04-14,43.34,43.07,43.23
2021-04-15,43.91,42.36,43.41
2021-04-16,42.82,42.1,43.51
2021-04-19,44.29,42.1,42.5
2021-04-20,44.68,43.48,44.19
2021-04-21,47.21,44.7,44.7
2021-04-22,50.44,48.2,49.15
2021-04-23,54.6,50.62,50.62
2021-04-26,54.01,52.85,53.59
2021-04-27,56.92,53.35,53.88
2021-04-28,58.1,55.86,56.69
2021-04-29,57.3,55.0,57.88
2021-04-30,59.75,56.82,57.08
2021-05-06,59.44,59.31,59.97
2021-05-07,59.55,59.25,59.91
2021-05-10,58.74,58.0,59.48
2021-05-11,58.16,56.88,57.56
2021-05-12,61.48,57.51,57.91
2021-05-13,57.01,56.43,60.92
2021-05-14,56.66,56.3,57.36
2021-05-17,57.83,57.11,57.85
2021-05-18,59.28,57.1,57.74
2021-05-19,60.45,57.32,58.98
2021-05-20,58.65,57.02,59.19
2021-05-21,60.1,58.11,59.11
2021-05-24,57.31,56.8,59.93
2021-05-25,61.48,57.9,58.12
2021-05-26,58.88,57.6,61.8
2021-05-27,60.4,58.16,58.99
2021-05-28,63.91,59.91,60.75
2021-05-31,64.01,62.52,64.41
2021-06-01,61.26,59.55,63.89
2021-06-02,61.27,60.65,61.21
2021-06-03,60.16,59.74,60.42
2021-06-04,61.17,59.83,60.58
2021-06-07,61.87,61.21,61.46
2021-06-08,60.25,59.77,61.87
2021-06-09,62.38,59.67,59.67
2021-06-10,64.1,61.4,62.0
2021-06-11,65.3,61.51,63.97
2021-06-15,64.67,63.7,67.5
2021-06-16,62.33,61.5,64.64
2021-06-17,66.7,62.57,62.57
2021-06-18,68.19,65.16,65.87
2021-06-21,67.71,66.5,68.21
2021-06-22,65.53,64.77,67.48
2021-06-23,64.85,64.5,65.47
2021-06-24,60.21,58.37,64.15
2021-06-25,64.67,59.5,60.0
2021-06-28,68.0,64.21,64.8
2021-06-29,74.8,68.01,68.01
2021-06-30,76.91,73.27,76.9
2021-07-01,74.72,74.15,76.9
2021-07-02,78.25,74.23,74.82
2021-07-05,77.2,75.91,78.54
2021-07-06,76.35,75.17,78.0
2021-07-07,78.4,75.27,77.2
2021-07-08,78.86,76.35,79.22
2021-07-09,80.2,77.34,78.52
2021-07-12,81.99,78.4,81.97
2021-07-13,90.19,81.2,82.0
2021-07-14,86.66,86.5,92.18
2021-07-15,87.51,85.9,86.59
2021-07-16,87.55,84.01,88.24
2021-07-19,88.9,84.61,87.49
2021-07-20,88.15,85.51,87.71
2021-07-21,91.86,88.2,88.6
2021-07-22,101.05,92.02,92.02
2021-07-23,104.35,97.38,101.0
2021-07-26,106.09,98.11,101.99
2021-07-27,104.5,98.1,104.5
2021-07-28,98.41,97.0,97.98
2021-07-29,102.79,97.3,100.8
2021-07-30,104.66,100.18,101.7
2021-08-02,94.19,94.19,94.88
2021-08-03,94.71,94.1,95.17
2021-08-04,101.45,94.23,94.71
2021-08-05,98.59,97.36,101.94
2021-08-06,101.88,98.58,98.59
2021-08-09,105.22,101.95,103.4
2021-08-10,106.43,105.0,107.14
2021-08-11,113.75,104.77,104.77
2021-08-12,116.0,112.02,112.56
2021-08-13,127.6,117.5,117.74
2021-08-16,129.0,124.0,131.16
2021-08-17,122.98,119.97,127.71
2021-08-18,132.26,123.1,123.2
2021-08-19,134.57,127.99,133.8
2021-08-20,148.03,131.94,133.7
2021-08-23,162.83,151.82,151.82
2021-08-24,175.5,159.8,160.0
2021-08-25,193.05,168.88,176.3
2021-08-26,212.36,197.95,198.5
2021-08-27,227.38,200.98,212.36
2021-08-30,212.61,210.85,222.11
2021-08-31,215.93,208.01,212.36
2021-09-01,221.89,202.0,219.88
2021-09-02,226.0,214.0,221.12
2021-09-03,221.1,211.0,226.0
2021-09-06,198.99,198.99,213.31
2021-09-07,210.67,197.35,198.5
2021-09-08,212.48,206.43,210.8
2021-09-09,211.0,200.42,220.8
2021-09-10,225.08,214.0,217.15

Indicator data:
date,60日,low
2020-11-19,30.898833333333336,37.5
2020-11-20,31.04483333333333,36.72
2020-11-23,31.216333333333335,39.0
2020-11-24,31.377000000000002,38.15
2020-11-25,31.562333333333335,38.89
2020-11-26,31.753666666666664,38.71
2020-11-27,31.903166666666667,38.07
2020-11-30,32.06916666666667,38.48
2020-12-01,32.226,37.45
2020-12-02,32.362,37.51
2020-12-03,32.49216666666667,36.45
2020-12-04,32.66016666666666,37.01
2020-12-07,32.823166666666665,37.85
2020-12-08,32.99333333333333,37.6
2020-12-09,33.1475,37.46
2020-12-10,33.284333333333336,36.78
2020-12-11,33.42783333333333,36.31
2020-12-14,33.584500000000006,36.46
2020-12-15,33.736,37.42
2020-12-16,33.85033333333333,36.46
2020-12-17,33.9885,35.91
2020-12-18,34.138000000000005,37.81
2020-12-21,34.320166666666665,38.91
2020-12-22,34.471333333333334,38.87
2020-12-23,34.64066666666667,38.67
2020-12-24,34.8205,38.16
2020-12-25,35.024833333333326,39.1
2020-12-28,35.175,36.45
2020-12-29,35.26133333333334,32.81
2020-12-30,35.35183333333334,32.7
2020-12-31,35.43833333333334,32.78
2021-01-04,35.499,31.11
2021-01-05,35.55583333333333,32.38
2021-01-06,35.665333333333336,33.64
2021-01-07,35.767,35.26
2021-01-08,35.898166666666675,35.11
2021-01-11,36.04183333333334,35.35
2021-01-12,36.1795,37.05
2021-01-13,36.35516666666667,37.55
2021-01-14,36.535,38.91
2021-01-15,36.70883333333334,38.0
2021-01-18,36.955000000000005,38.57
2021-01-19,37.234,43.43
2021-01-20,37.516,43.0
2021-01-21,37.782500000000006,44.49
2021-01-22,38.084666666666664,44.7
2021-01-25,38.36333333333334,46.03
2021-01-26,38.646166666666666,46.32
2021-01-27,38.91116666666667,44.6
2021-01-28,39.102666666666664,43.6
2021-01-29,39.288666666666664,43.03
2021-02-01,39.4555,44.17
2021-02-02,39.568333333333335,44.0
2021-02-03,39.75933333333333,45.44
2021-02-04,39.986,50.78
2021-02-05,40.10783333333334,47.86
2021-02-08,40.31483333333333,47.88
2021-02-09,40.53783333333333,50.6
2021-02-10,40.7445,50.32
2021-02-18,40.958499999999994,51.88
2021-02-19,41.182166666666674,50.75
2021-02-22,41.38366666666666,50.68
2021-02-23,41.588,48.9
2021-02-24,41.78483333333334,50.65
2021-02-25,41.967,50.91
2021-02-26,42.071999999999996,46.16
2021-03-01,42.23616666666667,47.2
2021-03-02,42.39283333333333,48.36
2021-03-03,42.568666666666665,47.52
2021-03-04,42.70333333333333,45.38
2021-03-05,42.849666666666664,44.05
2021-03-08,42.97366666666666,44.93
2021-03-09,43.0725,43.65
2021-03-10,43.205000000000005,44.0
2021-03-11,43.381166666666665,46.02
2021-03-12,43.5715,47.6
2021-03-15,43.733,46.4
2021-03-16,43.8935,46.2
2021-03-17,44.077833333333324,45.89
2021-03-18,44.348,49.48
2021-03-19,44.5345,48.31
2021-03-22,44.71783333333333,48.38
2021-03-23,44.82233333333333,46.5
2021-03-24,44.8805,42.36
2021-03-25,44.93083333333333,41.23
2021-03-26,44.99466666666667,41.91
2021-03-29,45.064,42.25
2021-03-30,45.208333333333336,44.0
2021-03-31,45.40316666666666,43.83
2021-04-01,45.58233333333333,43.67
2021-04-02,45.76,43.9
2021-04-06,45.95066666666666,44.14
2021-04-07,46.15083333333333,44.6
2021-04-08,46.30683333333333,45.01
2021-04-09,46.449666666666666,43.57
2021-04-12,46.54866666666666,43.0
2021-04-13,46.63649999999999,43.21
2021-04-14,46.7305,43.07
2021-04-15,46.79899999999999,42.36
2021-04-16,46.85783333333333,42.1
2021-04-19,46.94983333333333,42.1
2021-04-20,46.983666666666664,43.48
2021-04-21,47.0355,44.7
2021-04-22,47.12616666666666,48.2
2021-04-23,47.282000000000004,50.62
2021-04-26,47.3825,52.85
2021-04-27,47.551,53.35
2021-04-28,47.723499999999994,55.86
2021-04-29,47.89683333333333,55.0
2021-04-30,48.164,56.82
2021-05-06,48.416500000000006,59.31
2021-05-07,48.660333333333334,59.25
2021-05-10,48.8865,58.0
2021-05-11,49.02766666666666,56.88
2021-05-12,49.175666666666665,57.51
2021-05-13,49.32399999999999,56.43
2021-05-14,49.413000000000004,56.3
2021-05-17,49.492666666666665,57.11
2021-05-18,49.620666666666665,57.1
2021-05-19,49.72816666666667,57.32
2021-05-20,49.833999999999996,57.02
2021-05-21,49.98566666666667,58.11
2021-05-24,50.062,56.8
2021-05-25,50.229166666666664,57.9
2021-05-26,50.35566666666667,57.6
2021-05-27,50.585666666666675,58.16
2021-05-28,50.84,59.91
2021-05-31,51.0975,62.52
2021-06-01,51.297333333333334,59.55
2021-06-02,51.556333333333335,60.65
2021-06-03,51.79066666666667,59.74
2021-06-04,52.051833333333335,59.83
2021-06-07,52.3475,61.21
2021-06-08,52.57833333333333,59.77
2021-06-09,52.80866666666667,59.67
2021-06-10,53.0625,61.4
2021-06-11,53.37083333333333,61.51
2021-06-15,53.656,63.7
2021-06-16,53.87133333333334,61.5
2021-06-17,54.105,62.57
2021-06-18,54.419,65.16
2021-06-21,54.719166666666666,66.5
2021-06-22,55.026833333333336,64.77
2021-06-23,55.401666666666664,64.5
2021-06-24,55.70316666666667,58.37
2021-06-25,56.05166666666667,59.5
2021-06-28,56.440666666666665,64.21
2021-06-29,56.9355,68.01
2021-06-30,57.47566666666667,73.27
2021-07-01,57.982166666666664,74.15
2021-07-02,58.55133333333333,74.23
2021-07-05,59.095,75.91
2021-07-06,59.611,75.17
2021-07-07,60.15833333333333,75.27
2021-07-08,60.728500000000004,76.35
2021-07-09,61.339166666666664,77.34
2021-07-12,61.9835,78.4
2021-07-13,62.76433333333333,81.2
2021-07-14,63.476833333333325,86.5
2021-07-15,64.22166666666666,85.9
2021-07-16,64.94266666666667,84.01
2021-07-19,65.67966666666666,84.61
2021-07-20,66.362,85.51
2021-07-21,67.05233333333334,88.2
2021-07-22,67.8265,92.02
2021-07-23,68.66550000000001,97.38
2021-07-26,69.485,98.11
2021-07-27,70.25833333333334,98.1
2021-07-28,70.94350000000001,97.0
2021-07-29,71.66083333333334,97.3
2021-07-30,72.4145,100.18
2021-08-02,72.99183333333332,94.19
2021-08-03,73.59133333333332,94.1
2021-08-04,74.31283333333333,94.23
2021-08-05,74.93133333333334,97.36
2021-08-06,75.67916666666666,98.58
2021-08-09,76.4885,101.95
2021-08-10,77.29850000000002,105.0
2021-08-11,78.20633333333333,104.77
2021-08-12,79.13216666666668,112.02
2021-08-13,80.28133333333334,117.5
2021-08-16,81.42966666666666,124.0
2021-08-17,82.52416666666666,119.97
2021-08-18,83.70383333333332,123.1
2021-08-19,84.96533333333333,127.99
2021-08-20,86.42583333333333,131.94
2021-08-23,88.0745,151.82
2021-08-24,89.93266666666666,159.8
2021-08-25,92.12916666666666,168.88
2021-08-26,94.64733333333334,197.95
2021-08-27,97.43433333333333,200.98
2021-08-30,99.95833333333333,210.85
2021-08-31,102.526,208.01
2021-09-01,105.22,202.0
2021-09-02,107.94699999999999,214.0
2021-09-03,110.56366666666666,211.0
2021-09-06,112.79183333333334,198.99
2021-09-07,115.22516666666667,197.35
2021-09-08,117.72766666666666,206.43
2021-09-09,120.13266666666667,200.42
2021-09-10,122.74749999999999,214.0

Answer: 14.4279