Question: 今世缘从2025年09月06日到2025年11月19日，10、20、30日指数移动平均线呈空头排列的天数比例是多少？（单位：%）（平滑系数 alpha 取 2 / (n + 1)；从前 4n 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: EMA_t = \alpha * P_t + (1 - \alpha) * EMA_{t-1}，\alpha = 2 / (n + 1)
Data:
date,close,low,high,open
2025-03-17,55.8,54.8,57.36,56.48
2025-03-18,54.99,54.58,56.0,55.99
2025-03-19,53.73,53.65,55.06,54.82
2025-03-20,52.18,51.9,53.91,53.74
2025-03-21,52.15,51.82,52.76,52.01
2025-03-24,51.69,50.8,52.15,51.96
2025-03-25,52.68,50.7,52.87,51.67
2025-03-26,52.58,52.01,52.9,52.46
2025-03-27,53.9,52.33,54.07,52.46
2025-03-28,53.16,53.01,54.45,53.91
2025-03-31,52.88,52.17,53.1,53.0
2025-04-01,51.99,51.8,53.2,52.8
2025-04-02,52.0,51.28,52.33,51.97
2025-04-03,52.52,51.28,53.12,51.58
2025-04-07,51.31,49.28,52.48,50.88
2025-04-08,54.01,50.57,54.46,51.31
2025-04-09,55.55,52.14,55.55,53.8
2025-04-10,53.44,52.2,55.0,54.68
2025-04-11,51.74,50.4,52.93,52.9
2025-04-14,49.95,49.93,51.48,51.1
2025-04-15,50.98,49.74,51.16,49.95
2025-04-16,50.95,50.1,51.4,51.0
2025-04-17,50.93,50.16,51.07,50.44
2025-04-18,50.35,50.2,51.1,51.0
2025-04-21,49.19,49.1,50.42,50.42
2025-04-22,49.01,48.86,49.51,49.11
2025-04-23,48.6,48.5,49.34,49.11
2025-04-24,48.77,48.4,49.15,48.6
2025-04-25,48.7,48.41,48.98,48.65
2025-04-28,48.05,47.95,48.81,48.62
2025-04-29,46.27,45.96,47.85,47.5
2025-04-30,47.4,46.9,48.29,46.98
2025-05-06,46.79,46.48,47.79,47.64
2025-05-07,47.49,47.14,47.98,47.48
2025-05-08,48.33,47.1,48.4,47.23
2025-05-09,48.65,48.01,49.19,48.28
2025-05-12,48.34,47.92,48.75,48.66
2025-05-13,48.21,47.82,48.68,48.58
2025-05-14,48.51,47.5,49.12,48.11
2025-05-15,47.68,47.56,48.48,48.15
2025-05-16,47.13,46.93,47.74,47.5
2025-05-19,46.16,45.45,46.29,46.07
2025-05-20,46.05,46.0,46.66,46.0
2025-05-21,46.02,45.97,46.4,46.08
2025-05-22,46.0,45.88,46.2,45.88
2025-05-23,45.2,45.2,46.42,46.0
2025-05-26,44.71,44.49,45.14,45.03
2025-05-27,44.87,44.48,45.11,44.71
2025-05-28,44.67,44.43,45.0,44.88
2025-05-29,44.54,44.15,44.84,44.75
2025-05-30,44.09,43.96,44.59,44.39
2025-06-03,43.85,42.97,44.15,43.87
2025-06-04,43.83,43.63,44.15,43.78
2025-06-05,43.83,43.29,44.01,43.85
2025-06-06,43.07,42.5,43.3,42.84
2025-06-09,42.7,42.42,43.02,42.98
2025-06-10,41.78,41.65,42.73,42.7
2025-06-11,41.99,41.64,42.38,41.64
2025-06-12,40.95,40.9,41.98,41.85
2025-06-13,39.28,39.15,40.8,40.75
2025-06-16,39.16,37.96,39.22,38.95
2025-06-17,38.5,38.45,39.34,39.0
2025-06-18,38.72,38.36,40.88,39.8
2025-06-19,38.09,38.0,38.87,38.21
2025-06-20,39.39,38.09,39.64,38.1
2025-06-23,38.65,38.53,39.1,39.0
2025-06-24,38.95,38.63,39.18,38.75
2025-06-25,39.27,38.52,39.27,39.08
2025-06-26,39.0,38.94,39.49,39.12
2025-06-27,38.69,38.67,38.98,38.94
2025-06-30,38.93,38.45,39.23,38.68
2025-07-01,38.62,38.51,38.83,38.77
2025-07-02,38.69,38.32,38.83,38.59
2025-07-03,38.91,38.58,39.27,38.59
2025-07-04,38.71,38.66,39.0,38.82
2025-07-07,38.5,38.47,38.89,38.84
2025-07-08,38.98,38.39,39.09,38.5
2025-07-09,38.9,38.82,39.36,38.85
2025-07-10,39.1,38.59,39.29,38.8
2025-07-11,39.48,38.94,39.94,39.01
2025-07-14,39.57,39.05,39.8,39.4
2025-07-15,38.8,38.69,39.37,39.28
2025-07-16,39.17,38.7,39.47,38.7
2025-07-17,39.0,38.7,39.24,39.17
2025-07-18,39.5,38.92,39.53,39.07
2025-07-21,39.7,39.31,39.75,39.56
2025-07-22,41.18,39.63,41.5,39.7
2025-07-23,40.71,40.53,41.69,41.23
2025-07-24,41.02,40.5,41.12,40.56
2025-07-25,40.19,40.13,41.05,41.02
2025-07-28,39.99,39.82,40.1,40.1
2025-07-29,40.04,39.6,40.08,39.87
2025-07-30,40.05,39.88,40.57,40.05
2025-07-31,39.29,39.22,40.04,39.98
2025-08-01,39.32,39.18,39.5,39.24
2025-08-04,39.21,38.91,39.23,39.2
2025-08-05,39.58,39.26,39.6,39.26
2025-08-06,39.45,39.13,39.63,39.61
2025-08-07,39.44,39.28,39.58,39.45
2025-08-08,39.29,39.22,39.5,39.31
2025-08-11,39.89,39.24,40.1,39.26
2025-08-12,39.82,39.68,40.35,39.86
2025-08-13,39.77,39.58,40.09,39.95
2025-08-14,39.91,39.73,40.29,39.8
2025-08-15,39.83,39.51,39.99,39.8
2025-08-18,40.3,39.9,40.58,39.9
2025-08-19,41.12,40.2,41.4,40.3
2025-08-20,42.89,40.71,43.58,40.89
2025-08-21,42.16,42.05,42.89,42.89
2025-08-22,42.49,41.9,42.49,42.21
2025-08-25,44.3,42.33,44.7,42.62
2025-08-26,44.55,43.3,45.6,43.58
2025-08-27,43.0,43.0,44.55,44.55
2025-08-28,42.71,41.75,43.36,42.75
2025-08-29,43.29,42.93,44.15,42.93
2025-09-01,42.9,42.62,43.4,43.0
2025-09-02,42.4,42.31,43.44,42.93
2025-09-03,42.38,41.74,43.68,42.55
2025-09-04,42.88,41.73,42.9,42.0
2025-09-05,43.07,42.41,43.14,42.89
2025-09-08,43.42,42.68,43.58,43.0
2025-09-09,42.93,42.5,43.33,43.25
2025-09-10,42.74,42.43,43.3,42.72
2025-09-11,43.02,42.23,43.15,42.59
2025-09-12,42.45,42.35,43.48,42.9
2025-09-15,41.93,41.83,42.42,42.28
2025-09-16,42.16,41.76,42.26,41.93
2025-09-17,41.83,41.72,42.35,42.12
2025-09-18,40.96,40.89,41.83,41.81
2025-09-19,41.26,40.4,41.26,40.99
2025-09-22,40.1,40.03,41.06,41.03
2025-09-23,39.6,39.29,40.24,40.13
2025-09-24,39.8,39.48,40.04,39.5
2025-09-25,39.26,39.23,39.99,39.8
2025-09-26,39.1,38.99,39.53,39.21
2025-09-29,39.71,38.77,40.0,39.1
2025-09-30,39.3,39.21,39.6,39.6
2025-10-09,39.06,38.58,39.44,39.19
2025-10-10,39.0,38.89,39.28,38.9
2025-10-13,38.65,38.32,38.75,38.52
2025-10-14,39.45,38.8,39.67,38.85
2025-10-15,40.3,39.13,40.43,39.44
2025-10-16,40.22,39.86,40.35,40.09
2025-10-17,39.58,39.52,40.16,40.12
2025-10-20,39.34,39.2,39.7,39.62
2025-10-21,39.21,39.13,39.56,39.33
2025-10-22,38.98,38.97,39.34,39.03
2025-10-23,39.18,38.79,39.19,38.98
2025-10-24,38.75,38.71,39.2,39.09
2025-10-27,38.74,38.55,38.9,38.75
2025-10-28,38.68,38.61,38.95,38.72
2025-10-29,38.04,37.87,38.61,38.61
2025-10-30,38.25,37.82,38.46,37.91
2025-10-31,38.82,37.9,39.2,38.0
2025-11-03,38.79,38.25,38.89,38.64
2025-11-04,38.13,37.96,38.73,38.73
2025-11-05,38.17,37.7,38.2,37.89
2025-11-06,38.1,38.08,38.38,38.11
2025-11-07,37.79,37.77,38.25,37.98
2025-11-10,39.22,37.7,39.36,37.81
2025-11-11,38.94,38.57,39.18,39.03
2025-11-12,39.16,38.96,39.75,39.01
2025-11-13,39.28,38.8,39.34,39.06
2025-11-14,38.9,38.85,39.75,39.11
2025-11-17,38.52,38.25,38.84,38.8
2025-11-18,38.32,38.16,38.64,38.37
2025-11-19,38.05,38.0,38.39,38.3

Indicator data:
date,10日,20日,30日
2025-04-28,49.48657954986886,50.66807353839996,51.50538012474782
2025-04-29,48.901746904438156,50.24920939188568,51.16761366508668
2025-04-30,48.62870201272212,49.97785611646799,50.92454181572624
2025-05-06,48.29439255586355,49.67425077204247,50.657797182453585
2025-05-07,48.148139363888355,49.4662268889908,50.453423170682385
2025-05-08,48.181204934090474,49.35801480432501,50.31642812741256
2025-05-09,48.26644040061947,49.290584822960724,50.20891663532143
2025-05-12,48.27981487323411,49.2000529350597,50.0883413685265
2025-05-13,48.26712125991882,49.105762179339735,49.96715805442802
2025-05-14,48.311281030842665,49.04902292416452,49.87314785736815
2025-05-15,48.196502661598544,48.9186397885298,49.73165444721538
2025-05-16,48.002593086762445,48.74829314200315,49.56380577320148
2025-05-19,47.66757616189654,48.50178903324095,49.34420540073687
2025-05-20,47.37347140518808,48.26828531578943,49.13167602004417
2025-05-21,47.127385695153876,48.05416290476186,48.93092272842842
2025-05-22,46.92240647785317,47.85852834240359,48.74183093949756
2025-05-23,46.60924166369805,47.60533516693658,48.51332571759449
2025-05-26,46.263924997571124,47.329588960561665,48.26794986484646
2025-05-27,46.01048408892182,47.09534239288912,48.04872729292089
2025-05-28,45.766759709117856,46.86435740309016,47.83074488692599
2025-05-29,45.54371248927825,46.64299003136729,47.618438765188834
2025-05-30,45.27940112759129,46.39984812361802,47.390797554531495
2025-06-03,45.01951001348379,46.157005445178214,47.16235900262624
2025-06-04,44.80323546557764,45.93538587897077,46.947368099231
2025-06-05,44.62628356274534,45.73487293811641,46.74624757669997
2025-06-06,44.343322914973456,45.48107551543866,46.509070313687076
2025-06-09,44.04453693043283,45.216211180634986,46.2633238418363
2025-06-10,43.6328029430814,44.888952972955465,45.974077142362994
2025-06-11,43.33411149888478,44.61286221362637,45.717039907371834
2025-06-12,42.90063668090573,44.264018193281004,45.40948894560591
2025-06-13,42.24233910255923,43.789349793920906,45.0140380458894
2025-06-16,41.68191381118482,43.34845933735701,44.63635817196105
2025-06-17,41.103384027333036,42.886701305227774,44.240464096350664
2025-06-18,40.67004147690884,42.48987260949179,43.88430512239256
2025-06-19,40.20094302656178,42.07083712287353,43.51047898546401
2025-06-20,40.053498839914184,41.81551930164748,43.244641631563105
2025-06-23,39.798317232657055,41.51404127291915,42.9482131392042
2025-06-24,39.64407773581032,41.26984686597447,42.69026390441684
2025-06-25,39.57606360202662,41.07938525969119,42.469601717035104
2025-06-26,39.47132476529451,40.88134856829203,42.24575644496832
2025-06-27,39.32926571705914,40.67264870464518,42.016352803357464
2025-06-30,39.256671950321106,40.50668216134564,41.81723326765699
2025-07-01,39.140913413899085,40.32699814597939,41.610960153614606
2025-07-02,39.058929156826515,40.17109356064802,41.42251111144593
2025-07-03,39.031851128312596,40.05098941201487,41.2604136203849
2025-07-04,38.97333274134667,39.92327613468012,41.09587080616652
2025-07-07,38.88727224292,39.787726026615346,40.92839527028482
2025-07-08,38.90413183511636,39.71079973836627,40.80269234962128
2025-07-09,38.90338059236793,39.63358071566472,40.67993800448443
2025-07-10,38.93912957557376,39.58276350464903,40.578006520324145
2025-07-11,39.03746965274216,39.57297650420627,40.50716738998065
2025-07-14,39.13429335224358,39.572693027615195,40.44670497772384
2025-07-15,39.07351274274475,39.49910321546137,40.340465946902945
2025-07-16,39.09105588042752,39.467760052084095,40.264952014844695
2025-07-17,39.07450026580433,39.42321147569513,40.18334220743536
2025-07-18,39.151863853839906,39.43052466848607,40.13925561340727
2025-07-21,39.251524971323555,39.45618898577311,40.11091654157455
2025-07-22,39.602156794719264,39.62036146331853,40.17988966792458
2025-07-23,39.803582832043034,39.7241365620501,40.21409033451009
2025-07-24,40.02474958985339,39.84755212756914,40.266084506477185
2025-07-25,40.05479511897095,39.88016621065779,40.26117582863995
2025-07-28,40.04301418824896,39.89062657154752,40.24368061388898
2025-07-29,40.042466154021874,39.90485261235252,40.23053992912196
2025-07-30,40.043835944199714,39.918676173080854,40.21889219175926
2025-07-31,39.90677486343613,39.85880225183506,40.15896366325866
2025-08-01,39.80008852462956,39.80748775166029,40.10483697530649
2025-08-04,39.69279970196964,39.75058415626407,40.04710555754478
2025-08-05,39.672290665247885,39.734338046143684,40.01696971512254
2025-08-06,39.631874180657356,39.70725823222524,39.98039102382432
2025-08-07,39.59698796599238,39.68180506725141,39.945527086803395
2025-08-08,39.54117197217558,39.644490298941754,39.90323501668705
2025-08-11,39.60459524996183,39.667872175233015,39.902381144642725
2025-08-12,39.64375974996877,39.682360539496536,39.89706623208513
2025-08-13,39.66671252270172,39.69070715478258,39.88886841066028
2025-08-14,39.71094660948322,39.71159218766043,39.89023173900478
2025-08-15,39.73259268048627,39.72286912216896,39.88634582035932
2025-08-18,39.83575764767058,39.77783396767668,39.91303318678775
2025-08-19,40.06925625718502,39.90565930408842,39.99090201344661
2025-08-20,40.582118755878646,40.18988222750857,40.17794059322425
2025-08-21,40.8690062548098,40.37751249155537,40.3058153936614
2025-08-22,41.163732390298925,40.578701778073906,40.446730529554216
2025-08-25,41.73396286479003,40.93311113254306,40.69532855990556
2025-08-26,42.245969616646384,41.27757673896753,40.94401703991166
2025-08-27,42.383066049983405,41.44161704954205,41.07666110185284
2025-08-28,42.44250858635006,41.562415425776145,41.182037804959116
2025-08-29,42.59659793428641,41.72694728998794,41.318035365929504
2025-09-01,42.65176194623433,41.83866659570337,41.42009760038567
2025-09-02,42.605987046919,41.8921269199221,41.48331711003821
2025-09-03,42.56489849293372,41.93859102278666,41.541167619068005
2025-09-04,42.622189676036676,42.0282490206165,41.62754390170878
2025-09-05,42.70360973493909,42.1274633996054,41.720605585469514
2025-09-08,42.833862510404714,42.250562123452504,41.83024393479407
2025-09-09,42.85134205396749,42.3152704926475,41.9011959390009
2025-09-10,42.83109804415522,42.35572092191917,41.9553123300331
2025-09-11,42.865443854308815,42.418985596022104,42.02400185712774
2025-09-12,42.789908608070846,42.421939348781905,42.0514856082808
2025-09-15,42.6335615884216,42.37508798223125,42.043647827101395
2025-09-16,42.54745948143585,42.35460341249494,42.051154418901305
2025-09-17,42.41701230299297,42.30464118273352,42.03688639187541
2025-09-18,42.15210097517606,42.17658011771128,41.967409850464094
2025-09-19,41.98990079787132,42.08928677316735,41.92177050527287
2025-09-22,41.646282470985625,41.89983089000855,41.80423692428752
2025-09-23,41.274231112624605,41.68079937667441,41.66202809046252
2025-09-24,41.0061890921474,41.50167562651494,41.54189724591656
2025-09-25,40.68870016630242,41.28818270970399,41.394678068760655
2025-09-26,40.399845590611065,41.07978435639885,41.246634322389
2025-09-29,40.27441911959087,40.94932870340848,41.14749662417036
2025-09-30,40.097252006937985,40.79224977927434,41.02830329357873
2025-10-09,39.90866073294926,40.627273609819646,40.901315984315595
2025-10-10,39.74344969059485,40.4722951707892,40.778650436940396
2025-10-13,39.54464065594124,40.298743249761664,40.641318150686175
2025-10-14,39.52743326395192,40.21791055930817,40.564458915158035
2025-10-15,39.66789994323339,40.22572860127882,40.54739704966397
2025-10-16,39.768281771736405,40.225183020204646,40.52627465936307
2025-10-17,39.73404872232978,40.16373701828039,40.46522468133965
2025-10-20,39.662403500088004,40.08528587368227,40.39262954060806
2025-10-21,39.58014831825382,40.00192531428395,40.31633086056884
2025-10-22,39.47103044220766,39.90459909387596,40.230115966338595
2025-10-23,39.41811581635172,39.835589656363965,40.162366549155465
2025-10-24,39.29664021337868,39.73220016528168,40.071246126629305
2025-10-27,39.195432901855284,39.63770491144533,39.98535927975
2025-10-28,39.10171782879068,39.54649491987911,39.90114255202419
2025-10-29,38.90867822355601,39.403019213223956,39.78106883899037
2025-10-30,38.78891854654582,39.29320785958358,39.682290204216805
2025-10-31,38.794569719901126,39.24814044438514,39.626658578138304
2025-11-03,38.79373886173728,39.204508021110364,39.57268060535519
2025-11-04,38.67305906869414,39.102173923861756,39.47960443726776
2025-11-05,38.58159378347702,39.01339545492254,39.39511382841177
2025-11-06,38.494031277390285,38.92640541159658,39.3115580975465
2025-11-07,38.366025590592045,38.81817632477786,39.213393058995116
2025-11-10,38.52129366502985,38.85644524622759,39.2138193132535
2025-11-11,38.597422089569875,38.864402841824955,39.19615355110812
2025-11-12,38.69970898237535,38.89255495212734,39.19382106393985
2025-11-13,38.805216440125285,38.92945448049616,39.19938099529857
2025-11-14,38.82244981464796,38.926649291877474,39.18006609237608
2025-11-17,38.76745893925742,38.88792078788914,39.13748118319053
2025-11-18,38.686102768483345,38.83383309380446,39.084740461694366
2025-11-19,38.57044771966819,38.75918232296594,39.0179830125528

Answer: 74.6377