Question: 福耀玻璃从2024年11月14日到2025年08月06日，收盘价小于20日双指数移动平均线的天数比例是多少？（单位：%）（平滑系数 alpha 取 2 / (n + 1)；从前 5n 个数据开始计算；初始值用首个数据点）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: DEMA = 2 * EMA1 - EMA2；EMA1 = EMA_n(P)；EMA2 = EMA_n(EMA1)
Data:
date,close,high
2024-06-18,46.42,46.43
2024-06-19,45.55,46.53
2024-06-20,45.38,45.97
2024-06-21,45.17,45.41
2024-06-24,45.45,45.85
2024-06-25,46.13,46.45
2024-06-26,47.54,47.75
2024-06-27,47.45,48.0
2024-06-28,47.9,48.0
2024-07-01,47.74,48.12
2024-07-02,47.04,48.1
2024-07-03,46.17,47.32
2024-07-04,47.1,47.45
2024-07-05,47.74,47.8
2024-07-08,47.29,47.98
2024-07-09,48.73,48.85
2024-07-10,49.23,49.5
2024-07-11,49.17,49.73
2024-07-12,48.51,49.08
2024-07-15,49.26,49.39
2024-07-16,48.92,49.25
2024-07-17,48.45,48.84
2024-07-18,49.04,49.17
2024-07-19,48.6,48.9
2024-07-22,49.2,49.56
2024-07-23,47.81,49.35
2024-07-24,47.71,48.51
2024-07-25,47.6,47.99
2024-07-26,47.26,47.77
2024-07-29,44.46,46.25
2024-07-30,45.43,46.29
2024-07-31,45.01,45.4
2024-08-01,43.15,44.92
2024-08-02,43.35,43.65
2024-08-05,42.72,43.66
2024-08-06,42.87,43.14
2024-08-07,44.97,45.36
2024-08-08,45.14,45.84
2024-08-09,45.46,45.8
2024-08-12,45.23,45.87
2024-08-13,45.02,45.49
2024-08-14,45.3,45.46
2024-08-15,45.76,45.85
2024-08-16,46.32,46.62
2024-08-19,45.31,46.62
2024-08-20,45.62,45.99
2024-08-21,45.91,46.35
2024-08-22,46.55,46.66
2024-08-23,47.28,47.5
2024-08-26,46.96,47.48
2024-08-27,47.09,47.33
2024-08-28,47.42,47.59
2024-08-29,48.25,48.58
2024-08-30,47.89,48.25
2024-09-02,47.52,48.34
2024-09-03,47.75,48.05
2024-09-04,48.11,48.59
2024-09-05,48.18,48.55
2024-09-06,48.53,49.2
2024-09-09,48.4,49.12
2024-09-10,48.24,48.85
2024-09-11,48.89,49.48
2024-09-12,48.26,49.23
2024-09-13,49.6,49.92
2024-09-18,51.75,51.96
2024-09-19,52.2,53.0
2024-09-20,52.2,52.55
2024-09-23,52.3,52.61
2024-09-24,51.22,52.6
2024-09-25,52.3,53.48
2024-09-26,52.74,52.83
2024-09-27,54.25,54.57
2024-09-30,58.2,58.33
2024-10-08,58.27,64.02
2024-10-09,56.6,58.9
2024-10-10,58.36,59.26
2024-10-11,57.84,59.19
2024-10-14,58.25,58.96
2024-10-15,57.06,58.41
2024-10-16,55.71,57.23
2024-10-17,56.86,57.5
2024-10-18,58.6,59.38
2024-10-21,58.69,59.1
2024-10-22,60.88,61.61
2024-10-23,61.77,62.5
2024-10-24,60.68,62.26
2024-10-25,60.39,61.21
2024-10-28,58.34,60.39
2024-10-29,58.99,59.71
2024-10-30,58.65,59.52
2024-10-31,57.01,58.78
2024-11-01,56.96,57.67
2024-11-04,57.6,57.78
2024-11-05,58.15,58.29
2024-11-06,57.55,58.15
2024-11-07,57.87,58.35
2024-11-08,57.25,58.2
2024-11-11,57.28,58.1
2024-11-12,57.28,59.12
2024-11-13,57.59,57.95
2024-11-14,57.25,58.12
2024-11-15,57.38,58.3
2024-11-18,56.7,57.6
2024-11-19,57.36,57.49
2024-11-20,57.13,57.6
2024-11-21,57.07,57.3
2024-11-22,56.01,57.19
2024-11-25,54.8,56.32
2024-11-26,55.6,56.45
2024-11-27,56.83,56.94
2024-11-28,56.61,57.17
2024-11-29,56.0,56.93
2024-12-02,56.66,56.96
2024-12-03,57.2,57.47
2024-12-04,57.28,57.63
2024-12-05,56.05,57.5
2024-12-06,56.08,56.3
2024-12-09,56.34,56.96
2024-12-10,56.6,57.5
2024-12-11,57.35,57.62
2024-12-12,58.28,58.71
2024-12-13,57.84,58.38
2024-12-16,57.33,58.56
2024-12-17,58.8,59.28
2024-12-18,58.96,59.3
2024-12-19,60.55,61.0
2024-12-20,59.51,60.54
2024-12-23,59.81,60.47
2024-12-24,60.18,60.4
2024-12-25,61.49,61.96
2024-12-26,61.07,61.59
2024-12-27,61.64,61.73
2024-12-30,62.14,62.75
2024-12-31,62.4,63.19
2025-01-02,60.45,62.6
2025-01-03,59.38,60.87
2025-01-06,59.51,59.81
2025-01-07,59.98,60.27
2025-01-08,61.27,61.48
2025-01-09,61.08,61.62
2025-01-10,60.0,61.3
2025-01-13,59.7,61.3
2025-01-14,61.24,61.54
2025-01-15,60.56,61.35
2025-01-16,60.8,61.58
2025-01-17,60.19,61.44
2025-01-20,59.5,60.75
2025-01-21,59.55,59.92
2025-01-22,58.91,60.06
2025-01-23,58.42,59.33
2025-01-24,59.39,59.98
2025-01-27,59.59,60.24
2025-02-05,59.35,60.1
2025-02-06,58.6,59.54
2025-02-07,58.51,58.63
2025-02-10,58.35,59.12
2025-02-11,57.2,58.48
2025-02-12,57.43,57.56
2025-02-13,56.9,57.3
2025-02-14,57.34,57.34
2025-02-17,56.85,57.33
2025-02-18,57.42,57.98
2025-02-19,57.23,57.79
2025-02-20,57.34,57.66
2025-02-21,57.77,58.21
2025-02-24,56.81,57.58
2025-02-25,55.93,57.22
2025-02-26,56.88,57.01
2025-02-27,56.54,57.1
2025-02-28,56.26,57.34
2025-03-03,55.96,56.8
2025-03-04,55.73,56.13
2025-03-05,56.0,56.38
2025-03-06,55.79,56.26
2025-03-07,56.0,56.22
2025-03-10,56.61,56.62
2025-03-11,56.97,57.58
2025-03-12,58.99,59.3
2025-03-13,58.91,59.53
2025-03-14,61.38,61.49
2025-03-17,61.1,61.5
2025-03-18,60.45,61.41
2025-03-19,57.51,60.0
2025-03-20,56.94,57.69
2025-03-21,56.7,57.5
2025-03-24,57.78,58.78
2025-03-25,57.83,58.15
2025-03-26,57.58,57.94
2025-03-27,58.23,58.8
2025-03-28,58.24,58.64
2025-03-31,58.57,59.49
2025-04-01,57.9,58.87
2025-04-02,57.35,57.89
2025-04-03,56.9,57.34
2025-04-07,53.68,54.75
2025-04-08,53.68,54.13
2025-04-09,53.53,53.53
2025-04-10,54.6,56.28
2025-04-11,55.03,55.18
2025-04-14,54.12,55.5
2025-04-15,54.6,54.78
2025-04-16,54.88,54.88
2025-04-17,54.34,54.97
2025-04-18,54.11,55.75
2025-04-21,55.39,55.65
2025-04-22,55.94,56.15
2025-04-23,56.87,57.18
2025-04-24,56.98,57.35
2025-04-25,57.02,57.24
2025-04-28,56.98,57.5
2025-04-29,58.13,58.3
2025-04-30,58.12,58.78
2025-05-06,58.0,58.25
2025-05-07,57.56,58.47
2025-05-08,58.24,58.28
2025-05-09,56.12,56.8
2025-05-12,56.88,57.25
2025-05-13,56.4,57.19
2025-05-14,56.24,56.56
2025-05-15,56.67,56.99
2025-05-16,57.06,57.08
2025-05-19,56.83,57.14
2025-05-20,57.43,57.67
2025-05-21,57.17,57.98
2025-05-22,59.0,59.0
2025-05-23,60.3,60.88
2025-05-26,59.79,60.65
2025-05-27,58.6,60.11
2025-05-28,58.65,59.31
2025-05-29,58.35,59.24
2025-05-30,57.97,58.68
2025-06-03,58.07,58.37
2025-06-04,57.0,58.47
2025-06-05,57.94,58.13
2025-06-06,57.88,58.11
2025-06-09,57.55,57.97
2025-06-10,57.28,57.85
2025-06-11,58.41,59.16
2025-06-12,57.98,58.4
2025-06-13,57.7,58.22
2025-06-16,57.95,58.11
2025-06-17,57.2,58.1
2025-06-18,57.47,57.63
2025-06-19,56.85,57.52
2025-06-20,57.65,57.95
2025-06-23,56.79,57.6
2025-06-24,57.47,57.88
2025-06-25,57.99,58.15
2025-06-26,56.98,58.15
2025-06-27,57.36,57.7
2025-06-30,57.01,57.47
2025-07-01,56.87,57.2
2025-07-02,57.13,57.5
2025-07-03,57.21,57.7
2025-07-04,58.13,58.77
2025-07-07,58.13,59.0
2025-07-08,57.64,58.22
2025-07-09,56.8,57.85
2025-07-10,56.41,56.93
2025-07-11,56.77,57.49
2025-07-14,56.71,57.06
2025-07-15,56.77,57.19
2025-07-16,56.76,57.18
2025-07-17,57.58,58.22
2025-07-18,58.0,58.06
2025-07-21,57.57,58.01
2025-07-22,57.35,57.7
2025-07-23,57.37,57.77
2025-07-24,57.38,57.42
2025-07-25,56.79,57.95
2025-07-28,55.57,56.93
2025-07-29,55.03,55.66
2025-07-30,55.55,56.15
2025-07-31,54.66,55.47
2025-08-01,54.91,55.01
2025-08-04,54.75,54.87
2025-08-05,55.79,55.95
2025-08-06,55.56,56.43

Indicator data:
date,20日,close
2024-08-09,44.45379978451805,45.46
2024-08-12,44.491734935201336,45.23
2024-08-13,44.491389469568354,45.02
2024-08-14,44.54669497756886,45.3
2024-08-15,44.682247150988154,45.76
2024-08-16,44.904572198608136,46.32
2024-08-19,44.91618456458632,45.31
2024-08-20,44.98549822866745,45.62
2024-08-21,45.100600813290164,45.91
2024-08-22,45.31826437291746,46.55
2024-08-23,45.640040988640344,47.28
2024-08-26,45.86027045422174,46.96
2024-08-27,46.07410663394509,47.09
2024-08-28,46.31823006783251,47.42
2024-08-29,46.67862834302986,48.25
2024-08-30,46.92259492800519,47.89
2024-09-02,47.06395900388745,47.52
2024-09-03,47.22553858524332,47.75
2024-09-04,47.42786982000182,48.11
2024-09-05,47.61238251040501,48.18
2024-09-06,47.83206403238672,48.53
2024-09-09,47.994641749633544,48.4
2024-09-10,48.10237868597725,48.24
2024-09-11,48.30973360497082,48.89
2024-09-12,48.3704505921291,48.26
2024-09-13,48.662235240645245,49.6
2024-09-18,49.29961691219116,51.75
2024-09-19,49.92523214071567,52.2
2024-09-20,50.45798989340158,52.2
2024-09-23,50.92804338352858,52.3
2024-09-24,51.12935208285225,51.22
2024-09-25,51.49088276794166,52.3
2024-09-26,51.87398718119679,52.74
2024-09-27,52.46937208927006,54.25
2024-09-30,53.68945477284687,58.2
2024-10-08,54.741817651939485,58.27
2024-10-09,55.33232950850337,56.6
2024-10-10,56.146491554275585,58.36
2024-10-11,56.73870591324763,57.84
2024-10-14,57.30785457523385,58.25
2024-10-15,57.566428835270315,57.06
2024-10-16,57.52860478205509,55.71
2024-10-17,57.68976373366752,56.86
2024-10-18,58.129807558151455,58.6
2024-10-21,58.51061615317662,58.69
2024-10-22,59.22124979986908,60.88
2024-10-23,59.979466913829405,61.77
2024-10-24,60.41864720971231,60.68
2024-10-25,60.727920447750584,60.39
2024-10-28,60.60614257278645,58.34
2024-10-29,60.60381517334608,58.99
2024-10-30,60.5255941940006,58.65
2024-10-31,60.14704510030509,57.01
2024-11-01,59.79964282541779,56.96
2024-11-04,59.6056047471049,57.6
2024-11-05,59.52834813653942,58.15
2024-11-06,59.34376076928252,57.55
2024-11-07,59.234438586387114,57.87
2024-11-08,59.020100576476025,57.25
2024-11-11,58.83403158807737,57.28
2024-11-12,58.6676210865712,57.28
2024-11-13,58.57504812650314,57.59
2024-11-14,58.428655765753525,57.25
2024-11-15,58.32171185352309,57.38
2024-11-18,58.10227058429569,56.7
2024-11-19,58.029646138653334,57.36
2024-11-20,57.92239895173383,57.13
2024-11-21,57.81653539099717,57.07
2024-11-22,57.53081455882045,56.01
2024-11-25,57.06362979997447,54.8
2024-11-26,56.80578803774478,55.6
2024-11-27,56.80691269008968,56.83
2024-11-28,56.768133435523126,56.61
2024-11-29,56.6242970531181,56.0
2024-12-02,56.620618771347836,56.66
2024-12-03,56.71592413460304,57.2
2024-12-04,56.812843725525305,57.28
2024-12-05,56.673289524665506,56.05
2024-12-06,56.5588400357561,56.08
2024-12-09,56.507974671494594,56.34
2024-12-10,56.51197853728966,56.6
2024-12-11,56.6521088806068,57.35
2024-12-12,56.94185631465455,58.28
2024-12-13,57.111360619490426,57.84
2024-12-16,57.16420781125413,57.33
2024-12-17,57.47563866155272,58.8
2024-12-18,57.771611410558585,58.96
2024-12-19,58.31310736690525,60.55
2024-12-20,58.58799990834182,59.51
2024-12-23,58.87580990341037,59.81
2024-12-24,59.18700302950133,60.18
2024-12-25,59.6883923864193,61.49
2024-12-26,60.03897739390617,61.07
2024-12-27,60.438717253604885,61.64
2024-12-30,60.867540882486566,62.14
2024-12-31,61.277280489054235,62.4
2025-01-02,61.2691328156182,60.45
2025-01-03,61.06092909368422,59.38
2025-01-06,60.89883099846222,59.51
2025-01-07,60.838802117806914,59.98
2025-01-08,61.0158868470863,61.27
2025-01-09,61.1286851234616,61.08
2025-01-10,61.024661171710214,60.0
2025-01-13,60.87579203051046,59.7
2025-01-14,61.02262892825388,61.24
2025-01-15,61.02144435766967,60.56
2025-01-16,61.059826653788534,60.8
2025-01-17,60.978231874386616,60.19
2025-01-20,60.77911930553937,59.5
2025-01-21,60.613595236206,59.55
2025-01-22,60.35235131336208,58.91
2025-01-23,60.036527137851635,58.42
2025-01-24,59.93929667093399,59.39
2025-01-27,59.89100328036482,59.59
2025-02-05,59.80520299211782,59.35
2025-02-06,59.59478413491683,58.6
2025-02-07,59.39718698301382,58.51
2025-02-10,59.198363128662244,58.35
2025-02-11,58.8192954099875,57.2
2025-02-12,58.536028679643884,57.43
2025-02-13,58.19797107335677,56.9
2025-02-14,57.98928472378063,57.34
2025-02-17,57.72367721563525,56.85
2025-02-18,57.601729326059235,57.42
2025-02-19,57.465788043879684,57.23
2025-02-20,57.37232329321679,57.34
2025-02-21,57.373524952713,57.77
2025-02-24,57.20395510978166,56.81
2025-02-25,56.901935758903356,55.93
2025-02-26,56.81822435594942,56.88
2025-02-27,56.68858101379483,56.54
2025-02-28,56.5303144138561,56.26
2025-03-03,56.34388470811164,55.96
2025-03-04,56.14606914664635,55.73
2025-03-05,56.02934421631628,56.0
2025-03-06,55.89543247773483,55.79
2025-03-07,55.82295205247669,56.0
2025-03-10,55.87588347712952,56.61
2025-03-11,55.99117760500063,56.97
2025-03-12,56.46087481529874,58.99
2025-03-13,56.85379362177589,58.91
2025-03-14,57.64215760057669,61.38
2025-03-17,58.27061738729954,61.1
2025-03-18,58.6928203656618,60.45
2025-03-19,58.52103803851016,57.51
2025-03-20,58.26784626468752,56.94
2025-03-21,58.005003599361615,56.7
2025-03-24,57.97392374317093,57.78
2025-03-25,57.95579330539876,57.83
2025-03-26,57.894459379645134,57.58
2025-03-27,57.959313382557504,58.23
2025-03-28,58.01667175335375,58.24
2025-03-31,58.125514576129326,58.57
2025-04-01,58.09710233285827,57.9
2025-04-02,57.97228321913427,57.35
2025-04-03,57.782830083236526,56.9
2025-04-07,57.03561034992127,53.68
2025-04-08,56.39350430655053,53.68
2025-04-09,55.81605691679308,53.53
2025-04-10,55.51673098624975,54.6
2025-04-11,55.34139405910429,55.03
2025-04-14,55.029960483285855,54.12
2025-04-15,54.853844014343466,54.6
2025-04-16,54.75816732194987,54.88
2025-04-17,54.58299282026758,54.34
2025-04-18,54.39566863344586,54.11
2025-04-21,54.471934606288436,55.39
2025-04-22,54.64246584839959,55.94
2025-04-23,54.96253821803343,56.87
2025-04-24,55.26180346194654,56.98
2025-04-25,55.5296210111639,57.02
2025-04-28,55.75511681892537,56.98
2025-04-29,56.15943318927954,58.13
2025-04-30,56.506463749235856,58.12
2025-05-06,56.78340746158798,58.0
2025-05-07,56.94132821059651,57.56
2025-05-08,57.199568749257956,58.24
2025-05-09,57.035819450980746,56.12
2025-05-12,57.03133696916217,56.88
2025-05-13,56.939220135118724,56.4
2025-05-14,56.82989800897324,56.24
2025-05-15,56.81306154735325,56.67
2025-05-16,56.86873000804662,57.06
2025-05-19,56.87431140096752,56.83
2025-05-20,56.98732191625226,57.43
2025-05-21,57.03668134562366,57.17
2025-05-22,57.41026871211025,59.0
2025-05-23,57.966332123568776,60.3
2025-05-26,58.35017240257615,59.79
2025-05-27,58.46156843684227,58.6
2025-05-28,58.56308248360578,58.65
2025-05-29,58.59254788257903,58.35
2025-05-30,58.54553386330243,57.97
2025-06-03,58.51996879207327,58.07
2025-06-04,58.30085571751087,57.0
2025-06-05,58.28021344361728,57.94
2025-06-06,58.24934560994368,57.88
2025-06-09,58.16086336414789,57.55
2025-06-10,58.033912016780846,57.28
2025-06-11,58.12814085018985,58.41
2025-06-12,58.12982802810345,57.98
2025-06-13,58.079056506820876,57.7
2025-06-16,58.07940855849823,57.95
2025-06-17,57.94246855038379,57.2
2025-06-18,57.872615450313845,57.47
2025-06-19,57.69931061828094,56.85
2025-06-20,57.69486552341246,57.65
2025-06-23,57.53481078114223,56.79
2025-06-24,57.52039126847983,57.47
2025-06-25,57.60246154252734,57.99
2025-06-26,57.48993891840271,56.98
2025-06-27,57.46213750574374,57.36
2025-06-30,57.37496095247196,57.01
2025-07-01,57.274891611109155,56.87
2025-07-02,57.23646848485878,57.13
2025-07-03,57.21856231135352,57.21
2025-07-04,57.37072018463967,58.13
2025-07-07,57.502162614385114,58.13
2025-07-08,57.52656639370611,57.64
2025-07-09,57.39519110744775,56.8
2025-07-10,57.211501214547376,56.41
2025-07-11,57.11917002136092,56.77
2025-07-14,57.02953682220956,56.71
2025-07-15,56.96414967440347,56.77
2025-07-16,56.907049086975775,56.76
2025-07-17,57.00772593865538,57.58
2025-07-18,57.171520586505075,58.0
2025-07-21,57.23511193690806,57.57
2025-07-22,57.25029567783288,57.35
2025-07-23,57.26725746414247,57.37
2025-07-24,57.283888246458105,57.38
2025-07-25,57.19134439029055,56.79
2025-07-28,56.890633030568,55.57
2025-07-29,56.53453476983757,55.03
2025-07-30,56.32371932493274,55.55
2025-07-31,55.982677935113294,54.66
2025-08-01,55.73685785922832,54.91
2025-08-04,55.49910620654944,54.75
2025-08-05,55.48635162277784,55.79
2025-08-06,55.43694161998268,55.56

Answer: 46.6667