Question: 统计中国通号在2022年05月15日到2023年01月05日间，开盘价小于20日赫尔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: HMA = WMA_{\sqrt{n}}(2 * WMA_{n/2}(P) - WMA_n(P))
Data:
date,close,high,open
2022-03-28,4.47,4.47,4.42
2022-03-29,4.42,4.46,4.46
2022-03-30,4.47,4.47,4.43
2022-03-31,4.45,4.47,4.45
2022-04-01,4.48,4.48,4.43
2022-04-06,4.57,4.57,4.48
2022-04-07,4.53,4.58,4.55
2022-04-08,4.53,4.56,4.54
2022-04-11,4.43,4.54,4.53
2022-04-12,4.52,4.52,4.42
2022-04-13,4.44,4.51,4.5
2022-04-14,4.47,4.49,4.47
2022-04-15,4.45,4.48,4.46
2022-04-18,4.45,4.47,4.46
2022-04-19,4.44,4.46,4.44
2022-04-20,4.43,4.46,4.44
2022-04-21,4.36,4.44,4.44
2022-04-22,4.36,4.4,4.34
2022-04-25,4.17,4.35,4.32
2022-04-26,4.12,4.23,4.18
2022-04-27,4.15,4.17,4.09
2022-04-28,4.22,4.3,4.16
2022-04-29,4.32,4.35,4.24
2022-05-05,4.41,4.43,4.33
2022-05-06,4.32,4.38,4.36
2022-05-09,4.35,4.4,4.33
2022-05-10,4.39,4.4,4.31
2022-05-11,4.38,4.42,4.37
2022-05-12,4.39,4.4,4.38
2022-05-13,4.37,4.41,4.4
2022-05-16,4.37,4.41,4.4
2022-05-17,4.38,4.4,4.38
2022-05-18,4.35,4.4,4.38
2022-05-19,4.41,4.42,4.34
2022-05-20,4.44,4.45,4.4
2022-05-23,4.43,4.46,4.43
2022-05-24,4.35,4.45,4.44
2022-05-25,4.37,4.38,4.36
2022-05-26,4.42,4.42,4.39
2022-05-27,4.43,4.44,4.41
2022-05-30,4.41,4.45,4.44
2022-05-31,4.56,4.63,4.42
2022-06-01,4.53,4.56,4.54
2022-06-02,4.73,4.8,4.51
2022-06-06,4.72,4.82,4.73
2022-06-07,4.65,4.73,4.7
2022-06-08,4.59,4.65,4.64
2022-06-09,4.56,4.62,4.6
2022-06-10,4.75,4.75,4.55
2022-06-13,4.65,4.7,4.67
2022-06-14,4.72,4.74,4.61
2022-06-15,4.7,4.79,4.7
2022-06-16,4.68,4.75,4.74
2022-06-17,4.69,4.7,4.67
2022-06-20,4.63,4.7,4.66
2022-06-21,4.63,4.67,4.65
2022-06-22,4.53,4.64,4.64
2022-06-23,4.57,4.6,4.54
2022-06-24,4.58,4.6,4.59
2022-06-27,4.56,4.62,4.57
2022-06-28,4.59,4.61,4.56
2022-06-29,4.55,4.64,4.6
2022-06-30,4.53,4.58,4.55
2022-07-01,4.51,4.55,4.55
2022-07-04,4.47,4.51,4.51
2022-07-05,4.44,4.51,4.48
2022-07-06,4.41,4.45,4.44
2022-07-07,4.4,4.44,4.41
2022-07-08,4.41,4.44,4.4
2022-07-11,4.42,4.44,4.41
2022-07-12,4.41,4.47,4.42
2022-07-13,4.43,4.45,4.44
2022-07-14,4.43,4.47,4.44
2022-07-15,4.4,4.47,4.43
2022-07-18,4.48,4.49,4.41
2022-07-19,4.34,4.38,4.38
2022-07-20,4.41,4.43,4.36
2022-07-21,4.4,4.44,4.4
2022-07-22,4.4,4.43,4.43
2022-07-25,4.38,4.42,4.4
2022-07-26,4.41,4.42,4.36
2022-07-27,4.4,4.42,4.42
2022-07-28,4.42,4.43,4.4
2022-07-29,4.39,4.43,4.43
2022-08-01,4.42,4.42,4.37
2022-08-02,4.35,4.4,4.4
2022-08-03,4.32,4.4,4.34
2022-08-04,4.31,4.35,4.32
2022-08-05,4.43,4.44,4.33
2022-08-08,4.41,4.44,4.44
2022-08-09,4.4,4.43,4.43
2022-08-10,4.39,4.42,4.38
2022-08-11,4.45,4.45,4.4
2022-08-12,4.44,4.46,4.44
2022-08-15,4.43,4.46,4.45
2022-08-16,4.42,4.45,4.45
2022-08-17,4.43,4.44,4.44
2022-08-18,4.41,4.44,4.43
2022-08-19,4.41,4.44,4.42
2022-08-22,4.43,4.43,4.41
2022-08-23,4.39,4.43,4.43
2022-08-24,4.31,4.41,4.41
2022-08-25,4.32,4.34,4.32
2022-08-26,4.35,4.36,4.34
2022-08-29,4.37,4.39,4.33
2022-08-30,4.44,4.44,4.4
2022-08-31,4.43,4.46,4.42
2022-09-01,4.33,4.43,4.4
2022-09-02,4.41,4.42,4.36
2022-09-05,4.41,4.43,4.42
2022-09-06,4.43,4.44,4.43
2022-09-07,4.43,4.44,4.43
2022-09-08,4.44,4.44,4.44
2022-09-09,4.46,4.47,4.44
2022-09-13,4.44,4.47,4.46
2022-09-14,4.39,4.43,4.4
2022-09-15,4.37,4.42,4.4
2022-09-16,4.25,4.39,4.37
2022-09-19,4.2,4.28,4.27
2022-09-20,4.2,4.25,4.23
2022-09-21,4.24,4.25,4.2
2022-09-22,4.2,4.25,4.22
2022-09-23,4.24,4.27,4.24
2022-09-26,4.18,4.24,4.22
2022-09-27,4.22,4.23,4.19
2022-09-28,4.17,4.22,4.22
2022-09-29,4.13,4.22,4.17
2022-09-30,4.15,4.19,4.12
2022-10-10,4.15,4.24,4.13
2022-10-11,4.22,4.22,4.17
2022-10-12,4.28,4.3,4.22
2022-10-13,4.31,4.32,4.28
2022-10-14,4.32,4.35,4.33
2022-10-17,4.37,4.4,4.3
2022-10-18,4.35,4.41,4.41
2022-10-19,4.34,4.38,4.35
2022-10-20,4.37,4.39,4.32
2022-10-21,4.41,4.42,4.36
2022-10-24,4.37,4.46,4.4
2022-10-25,4.38,4.4,4.39
2022-10-26,4.43,4.45,4.35
2022-10-27,4.41,4.46,4.45
2022-10-28,4.31,4.43,4.42
2022-10-31,4.53,4.61,4.44
2022-11-01,4.55,4.56,4.51
2022-11-02,4.53,4.56,4.55
2022-11-03,4.54,4.56,4.52
2022-11-04,4.57,4.6,4.54
2022-11-07,4.52,4.58,4.57
2022-11-08,4.52,4.55,4.55
2022-11-09,4.51,4.54,4.52
2022-11-10,4.51,4.53,4.49
2022-11-11,4.55,4.58,4.56
2022-11-14,4.58,4.61,4.55
2022-11-15,4.56,4.6,4.59
2022-11-16,4.55,4.6,4.56
2022-11-17,4.59,4.6,4.55
2022-11-18,4.56,4.61,4.58
2022-11-21,4.52,4.57,4.57
2022-11-22,4.6,4.74,4.52
2022-11-23,4.68,4.76,4.58
2022-11-24,4.56,4.67,4.64
2022-11-25,4.68,4.71,4.58
2022-11-28,4.65,4.67,4.65
2022-11-29,4.7,4.72,4.65
2022-11-30,4.7,4.72,4.69
2022-12-01,4.67,4.74,4.68
2022-12-02,4.67,4.68,4.66
2022-12-05,4.85,4.89,4.7
2022-12-06,4.85,4.9,4.8
2022-12-07,4.79,4.85,4.85
2022-12-08,4.74,4.81,4.8
2022-12-09,4.79,4.8,4.75
2022-12-12,4.72,4.8,4.8
2022-12-13,4.74,4.76,4.72
2022-12-14,4.71,4.75,4.74
2022-12-15,4.69,4.72,4.71
2022-12-16,4.84,4.87,4.66
2022-12-19,4.74,4.87,4.82
2022-12-20,4.81,4.85,4.77
2022-12-21,4.78,4.83,4.8
2022-12-22,4.67,4.8,4.75
2022-12-23,4.75,4.76,4.69
2022-12-26,4.81,4.83,4.73
2022-12-27,4.82,4.87,4.84
2022-12-28,4.82,4.85,4.84
2022-12-29,4.74,4.83,4.8
2022-12-30,4.79,4.82,4.76
2023-01-03,4.83,4.85,4.79
2023-01-04,4.83,4.85,4.85
2023-01-05,4.76,4.83,4.83

Indicator data:
date,20日,open
2022-04-29,4.183395670995671,4.24
2022-05-05,4.19101645021645,4.33
2022-05-06,4.207707792207792,4.36
2022-05-09,4.231324675324675,4.33
2022-05-10,4.261715151515152,4.31
2022-05-11,4.294149783549782,4.37
2022-05-12,4.329433766233765,4.38
2022-05-13,4.360038528138527,4.4
2022-05-16,4.382458008658008,4.4
2022-05-17,4.3970887445887445,4.38
2022-05-18,4.4009883116883115,4.38
2022-05-19,4.404302597402598,4.34
2022-05-20,4.4116978354978365,4.4
2022-05-23,4.4201099567099575,4.43
2022-05-24,4.419681385281384,4.44
2022-05-25,4.414025108225108,4.36
2022-05-26,4.410352813852813,4.39
2022-05-27,4.410860173160173,4.41
2022-05-30,4.413216883116883,4.44
2022-05-31,4.431708658008658,4.42
2022-06-01,4.456085714285715,4.54
2022-06-02,4.503224242424242,4.51
2022-06-06,4.5610930735930735,4.73
2022-06-07,4.612625974025974,4.7
2022-06-08,4.649223376623377,4.64
2022-06-09,4.665994805194806,4.6
2022-06-10,4.688754112554113,4.55
2022-06-13,4.70471341991342,4.67
2022-06-14,4.721789610389609,4.61
2022-06-15,4.733581818181818,4.7
2022-06-16,4.736019480519481,4.74
2022-06-17,4.733514285714287,4.67
2022-06-20,4.722038528138528,4.66
2022-06-21,4.707105627705628,4.65
2022-06-22,4.680578787878789,4.64
2022-06-23,4.651517748917749,4.54
2022-06-24,4.623283982683984,4.59
2022-06-27,4.596901298701299,4.57
2022-06-28,4.5778008658008655,4.56
2022-06-29,4.560865367965367,4.6
2022-06-30,4.54494632034632,4.55
2022-07-01,4.529237662337662,4.55
2022-07-04,4.510952380952381,4.51
2022-07-05,4.489747186147187,4.48
2022-07-06,4.465618614718615,4.44
2022-07-07,4.439967532467532,4.41
2022-07-08,4.417033766233766,4.4
2022-07-11,4.399380086580086,4.41
2022-07-12,4.386128138528138,4.42
2022-07-13,4.379704329004328,4.44
2022-07-14,4.378629870129869,4.44
2022-07-15,4.378454978354979,4.43
2022-07-18,4.38789393939394,4.41
2022-07-19,4.388285281385282,4.38
2022-07-20,4.389755411255412,4.36
2022-07-21,4.390914718614718,4.4
2022-07-22,4.391116883116882,4.43
2022-07-25,4.390184848484847,4.4
2022-07-26,4.390466666666666,4.36
2022-07-27,4.3906735930735925,4.42
2022-07-28,4.39325974025974,4.4
2022-07-29,4.394441125541126,4.43
2022-08-01,4.397091341991343,4.37
2022-08-02,4.394289177489178,4.4
2022-08-03,4.383643722943724,4.34
2022-08-04,4.367824675324675,4.32
2022-08-05,4.362621212121212,4.33
2022-08-08,4.364535497835497,4.44
2022-08-09,4.370038095238095,4.43
2022-08-10,4.3756792207792214,4.38
2022-08-11,4.385719913419914,4.4
2022-08-12,4.398316017316017,4.44
2022-08-15,4.4111021645021635,4.45
2022-08-16,4.422172294372293,4.45
2022-08-17,4.4312341991342,4.44
2022-08-18,4.435654545454546,4.43
2022-08-19,4.435632900432901,4.42
2022-08-22,4.435189177489178,4.41
2022-08-23,4.430453246753248,4.43
2022-08-24,4.4147380952380955,4.41
2022-08-25,4.393096969696971,4.32
2022-08-26,4.372563203463203,4.34
2022-08-29,4.3580129870129864,4.33
2022-08-30,4.357267532467533,4.4
2022-08-31,4.364468831168831,4.42
2022-09-01,4.3652402597402595,4.4
2022-09-02,4.369383982683983,4.36
2022-09-05,4.375270995670997,4.42
2022-09-06,4.385831168831169,4.43
2022-09-07,4.40012380952381,4.43
2022-09-08,4.414636796536797,4.44
2022-09-09,4.429432900432902,4.44
2022-09-13,4.440377922077923,4.46
2022-09-14,4.442216450216451,4.4
2022-09-15,4.436043722943724,4.4
2022-09-16,4.4125277056277055,4.37
2022-09-19,4.373078787878788,4.27
2022-09-20,4.326470995670995,4.23
2022-09-21,4.2834792207792205,4.2
2022-09-22,4.244054112554112,4.22
2022-09-23,4.214816017316016,4.24
2022-09-26,4.188285281385281,4.22
2022-09-27,4.170295238095237,4.19
2022-09-28,4.155899134199134,4.22
2022-09-29,4.141154545454546,4.17
2022-09-30,4.131054112554113,4.12
2022-10-10,4.124447619047619,4.13
2022-10-11,4.128553246753246,4.17
2022-10-12,4.146080519480519,4.22
2022-10-13,4.1744541125541135,4.28
2022-10-14,4.208668831168832,4.33
2022-10-17,4.248916883116883,4.3
2022-10-18,4.287275324675325,4.41
2022-10-19,4.320485281385283,4.35
2022-10-20,4.350448917748919,4.32
2022-10-21,4.3788670995671,4.36
2022-10-24,4.399658874458875,4.4
2022-10-25,4.4133844155844155,4.39
2022-10-26,4.42545670995671,4.35
2022-10-27,4.433255411255411,4.45
2022-10-28,4.4275294372294365,4.42
2022-10-31,4.4357207792207785,4.44
2022-11-01,4.455435064935064,4.51
2022-11-02,4.480087878787878,4.55
2022-11-03,4.506633333333333,4.52
2022-11-04,4.5318623376623375,4.54
2022-11-07,4.549733766233766,4.57
2022-11-08,4.561470129870129,4.55
2022-11-09,4.566494805194805,4.52
2022-11-10,4.566427705627705,4.49
2022-11-11,4.567398701298701,4.56
2022-11-14,4.569955844155844,4.55
2022-11-15,4.571593506493507,4.59
2022-11-16,4.571445454545455,4.56
2022-11-17,4.573891341991342,4.55
2022-11-18,4.575082683982683,4.58
2022-11-21,4.5717610389610375,4.57
2022-11-22,4.573752813852813,4.52
2022-11-23,4.587430735930736,4.58
2022-11-24,4.59558354978355,4.64
2022-11-25,4.611158874458875,4.58
2022-11-28,4.626179653679654,4.65
2022-11-29,4.64497445887446,4.65
2022-11-30,4.666359307359308,4.69
2022-12-01,4.682539826839827,4.68
2022-12-02,4.694264502164502,4.66
2022-12-05,4.72024025974026,4.7
2022-12-06,4.753753246753248,4.8
2022-12-07,4.783416883116885,4.85
2022-12-08,4.801951948051949,4.8
2022-12-09,4.813081385281386,4.75
2022-12-12,4.812364069264069,4.8
2022-12-13,4.8065341991342,4.72
2022-12-14,4.794759307359307,4.74
2022-12-15,4.776935064935064,4.71
2022-12-16,4.772242424242424,4.66
2022-12-19,4.765018181818181,4.82
2022-12-20,4.765326406926407,4.77
2022-12-21,4.768209523809523,4.8
2022-12-22,4.759538095238095,4.75
2022-12-23,4.7533419913419905,4.69
2022-12-26,4.755368398268398,4.73
2022-12-27,4.764871428571429,4.84
2022-12-28,4.779523809523811,4.84
2022-12-29,4.78533852813853,4.8
2022-12-30,4.788006926406927,4.76
2023-01-03,4.794292207792209,4.79
2023-01-04,4.803064935064935,4.85
2023-01-05,4.80680173160173,4.83

Answer: 51.4793