Question: 中国船舶2020年09月12日至2020年11月16日, 对于三指数移动平均的30日线和10日线，有多少次金叉？（平滑系数 alpha 取 2 / (n + 1)；从前 6n 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: TEMA = 3 * EMA1 - 3 * EMA2 + EMA3；EMA1 = EMA_n(P)；EMA2 = EMA_n(EMA1)；EMA3 = EMA_n(EMA2)
Data:
date,close
2019-12-17,22.68
2019-12-18,22.35
2019-12-19,21.82
2019-12-20,21.55
2019-12-23,21.27
2019-12-24,21.65
2019-12-25,21.83
2019-12-26,21.71
2019-12-27,21.42
2019-12-30,21.39
2019-12-31,21.76
2020-01-02,22.11
2020-01-03,22.12
2020-01-06,22.52
2020-01-07,22.6
2020-01-08,24.1
2020-01-09,23.41
2020-01-13,23.01
2020-01-14,22.65
2020-01-15,22.17
2020-01-16,22.4
2020-01-17,22.09
2020-01-20,22.28
2020-01-21,21.79
2020-01-22,21.93
2020-01-23,21.41
2020-02-03,19.27
2020-02-04,18.18
2020-02-05,18.76
2020-02-06,19.02
2020-02-07,19.05
2020-02-10,19.32
2020-02-11,19.33
2020-02-12,19.39
2020-02-13,19.03
2020-02-14,19.04
2020-02-17,20.09
2020-02-18,20.41
2020-02-19,20.08
2020-02-20,20.27
2020-02-21,20.48
2020-02-24,20.43
2020-02-25,19.9
2020-02-26,21.89
2020-02-27,20.66
2020-02-28,19.25
2020-03-02,19.8
2020-03-03,19.88
2020-03-04,19.83
2020-03-05,20.23
2020-03-06,19.89
2020-03-09,19.13
2020-03-10,19.37
2020-03-11,19.39
2020-03-12,18.87
2020-03-13,18.49
2020-03-16,17.88
2020-03-17,17.75
2020-03-18,17.5
2020-03-19,17.75
2020-03-20,18.23
2020-03-23,17.6
2020-03-24,17.86
2020-03-25,18.13
2020-03-26,17.9
2020-03-27,17.92
2020-03-30,18.6
2020-03-31,18.43
2020-04-01,18.15
2020-04-02,18.48
2020-04-03,18.35
2020-04-07,18.7
2020-04-08,19.03
2020-04-09,19.06
2020-04-10,18.77
2020-04-13,18.66
2020-04-14,18.74
2020-04-15,18.57
2020-04-16,18.73
2020-04-17,18.54
2020-04-20,18.66
2020-04-21,18.8
2020-04-22,19.45
2020-04-23,19.8
2020-04-24,19.24
2020-04-27,18.72
2020-04-28,18.24
2020-04-29,18.28
2020-04-30,18.69
2020-05-06,18.79
2020-05-07,18.7
2020-05-08,18.88
2020-05-11,19.15
2020-05-12,19.24
2020-05-13,18.77
2020-05-14,18.8
2020-05-15,18.82
2020-05-18,19.28
2020-05-19,19.05
2020-05-20,18.61
2020-05-21,18.35
2020-05-22,18.13
2020-05-25,18.17
2020-05-26,18.29
2020-05-27,18.29
2020-05-28,18.04
2020-05-29,18.04
2020-06-01,18.35
2020-06-02,18.47
2020-06-03,18.31
2020-06-04,18.2
2020-06-05,18.13
2020-06-08,18.03
2020-06-09,17.99
2020-06-10,17.87
2020-06-11,17.78
2020-06-12,18.01
2020-06-15,17.94
2020-06-16,17.96
2020-06-17,18.11
2020-06-18,17.9
2020-06-19,17.88
2020-06-22,17.95
2020-06-23,17.69
2020-06-24,17.52
2020-06-29,17.37
2020-06-30,17.44
2020-07-01,17.6
2020-07-02,17.9
2020-07-03,18.03
2020-07-06,18.85
2020-07-07,18.83
2020-07-08,20.71
2020-07-09,21.98
2020-07-10,20.6
2020-07-13,21.19
2020-07-14,21.59
2020-07-15,20.58
2020-07-16,19.58
2020-07-17,19.95
2020-07-20,21.4
2020-07-21,20.72
2020-07-22,20.81
2020-07-23,21.72
2020-07-24,22.28
2020-07-27,21.13
2020-07-28,21.27
2020-07-29,21.28
2020-07-30,21.08
2020-07-31,20.71
2020-08-03,21.66
2020-08-04,21.11
2020-08-05,21.22
2020-08-06,21.8
2020-08-07,22.35
2020-08-10,22.16
2020-08-11,23.59
2020-08-12,22.35
2020-08-13,22.39
2020-08-14,23.19
2020-08-17,23.49
2020-08-18,23.12
2020-08-19,22.8
2020-08-20,22.09
2020-08-21,21.87
2020-08-24,21.91
2020-08-25,21.09
2020-08-26,20.72
2020-08-27,20.77
2020-08-28,21.11
2020-08-31,20.89
2020-09-01,21.05
2020-09-02,20.57
2020-09-03,20.2
2020-09-04,20.3
2020-09-07,19.67
2020-09-08,19.85
2020-09-09,20.1
2020-09-10,19.35
2020-09-11,19.17
2020-09-14,19.11
2020-09-15,19.26
2020-09-16,18.91
2020-09-17,18.8
2020-09-18,19.09
2020-09-21,19.41
2020-09-22,19.02
2020-09-23,18.96
2020-09-24,18.33
2020-09-25,18.39
2020-09-28,18.12
2020-09-29,18.45
2020-09-30,18.46
2020-10-09,18.83
2020-10-12,19.26
2020-10-13,19.27
2020-10-14,19.06
2020-10-15,18.79
2020-10-16,18.77
2020-10-19,18.65
2020-10-20,18.7
2020-10-21,18.32
2020-10-22,18.29
2020-10-23,18.3
2020-10-26,18.16
2020-10-27,18.38
2020-10-28,18.23
2020-10-29,18.06
2020-10-30,17.82
2020-11-02,17.15
2020-11-03,17.65
2020-11-04,17.79
2020-11-05,17.81
2020-11-06,18.07
2020-11-09,18.28
2020-11-10,18.14
2020-11-11,18.05
2020-11-12,17.8
2020-11-13,17.92
2020-11-16,18.24

Indicator data:
date,30日,10日
2020-04-29,18.704082450230405,18.5359462364607
2020-04-30,18.70652901357172,18.558259607794366
2020-05-06,18.727160609461308,18.623901639395392
2020-05-07,18.729192380766538,18.63133247982741
2020-05-08,18.763848502666963,18.72092064881617
2020-05-11,18.843300936179883,18.9050490880714
2020-05-12,18.92914676938055,19.068501768773714
2020-05-13,18.91881504339253,18.961976122581397
2020-05-14,18.914877633911225,18.9008952289597
2020-05-15,18.914736460943846,18.867513393529144
2020-05-18,18.997703568270072,19.052677613082103
2020-05-19,19.028172603337133,19.070779175768184
2020-05-20,18.974477030246014,18.880650316565692
2020-05-21,18.87980361751907,18.634480711742018
2020-05-22,18.75671816005084,18.372793544865566
2020-05-25,18.656191976134473,18.222376896593374
2020-05-26,18.590189504356697,18.185367854699354
2020-05-27,18.53283307263353,18.170510767029057
2020-05-28,18.43784260700763,18.056726640036928
2020-05-29,18.355415580408724,17.989860119314635
2020-06-01,18.34038643945499,18.095030090267777
2020-06-02,18.349967896187277,18.227874475254467
2020-06-03,18.330276657313423,18.249570628362875
2020-06-04,18.294005112127042,18.21753246154132
2020-06-05,18.250506670848967,18.167255262736326
2020-06-08,18.195302836094598,18.091476830755944
2020-06-09,18.14081624147956,18.026388169232977
2020-06-10,18.07254304915076,17.932938893169254
2020-06-11,17.997750558390717,17.83483275525566
2020-06-12,17.975406288663986,17.879286194853258
2020-06-15,17.944625611045463,17.88308977979534
2020-06-16,17.922788082843557,17.899245221885778
2020-06-17,17.932354882341276,17.98166400793083
2020-06-18,17.904078559036318,17.944212085109033
2020-06-19,17.877101212623373,17.911737607518297
2020-06-22,17.867591150727275,17.923591977496162
2020-06-23,17.81351442288882,17.815695699194634
2020-06-24,17.736778059054885,17.668905491587125
2020-06-29,17.64394482229821,17.506940787875706
2020-06-30,17.57706943992689,17.436388684966523
2020-07-01,17.549363511122408,17.468881450909755
2020-07-02,17.581367300206107,17.633034244604097
2020-07-03,17.63471565718815,17.80585282507919
2020-07-06,17.8316779554991,18.29311436620597
2020-07-07,18.0016142531128,18.605020283452017
2020-07-08,18.49190477290832,19.652662114689647
2020-07-09,19.15105100287008,20.906272189322305
2020-07-10,19.475969360298368,21.08200240164317
2020-07-13,19.864413538499853,21.419900049375247
2020-07-14,20.273176262808867,21.781272327372452
2020-07-15,20.443146871413816,21.519987687711197
2020-07-16,20.405375020163742,20.851289241683304
2020-07-17,20.434232450424172,20.542571292247832
2020-07-20,20.717420196618384,20.97508286483518
2020-07-21,20.83671441376327,20.94142187259596
2020-07-22,20.951875109489002,20.943037740131654
2020-07-23,21.212003592048134,21.34175735539141
2020-07-24,21.535249713644298,21.846504842835675
2020-07-27,21.603123356353457,21.643327139848882
2020-07-28,21.681166265242656,21.5502655394943
2020-07-29,21.744591525418436,21.47734493098348
2020-07-30,21.75720728073376,21.326515091964367
2020-07-31,21.694678130501103,21.050357162449387
2020-08-03,21.80604693102637,21.292356471516374
2020-08-04,21.797768235750908,21.203631404401854
2020-08-05,21.80455725537414,21.191514140678542
2020-08-06,21.909983217350295,21.444746672701815
2020-08-07,22.096361979797837,21.860358659272755
2020-08-10,22.21924358254705,22.04486678607572
2020-08-11,22.580141632306354,22.80356229772572
2020-08-12,22.664792570097518,22.732359556798915
2020-08-13,22.739476575318257,22.68138582816709
2020-08-14,22.943303380816882,22.991410458557823
2020-08-17,23.169381033422813,23.31690741271537
2020-08-18,23.293153198381628,23.34666163061598
2020-08-19,23.336290384503275,23.200847676425916
2020-08-20,23.238211980003754,22.76488980023774
2020-08-21,23.10575551422742,22.363700576265437
2020-08-24,22.990922556262923,22.111973931433642
2020-08-25,22.73613366813859,21.57734925470287
2020-08-26,22.441169243582383,21.063509704349833
2020-08-27,22.18811401385539,20.76148808587926
2020-08-28,22.025194936065624,20.73737621601714
2020-08-31,21.84028694356341,20.646167557207935
2020-09-01,21.705608124598836,20.680321261149892
2020-09-02,21.499344602467676,20.50686021129704
2020-09-03,21.25090242676765,20.243102726114458
2020-09-04,21.051420105159224,20.13294775416772
2020-09-07,20.763025905033523,19.79606898572319
2020-09-08,20.544343776434342,19.675063799252243
2020-09-09,20.400003690735044,19.7312396289311
2020-09-10,20.139827047863065,19.451276200532565
2020-09-11,19.882111096998543,19.203439014772304
2020-09-14,19.648906703554115,19.033183821734315
2020-09-15,19.475773535793834,19.010472884528813
2020-09-16,19.264957388027753,18.858979413996106
2020-09-17,19.065051941149147,18.728506935555302
2020-09-18,18.94761391756967,18.792678375408766
2020-09-21,18.90803648987137,18.998495271618527
2020-09-22,18.80788866659343,18.973190316250882
2020-09-23,18.71458580112032,18.93905141835335
2020-09-24,18.52399250597383,18.640139986049352
2020-09-25,18.373565132874976,18.477572226680415
2020-09-28,18.19870052358328,18.259295842099608
2020-09-29,18.111469845452433,18.27653719312746
2020-09-30,18.043033645846396,18.306340629049718
2020-10-09,18.056311975951843,18.505047022363897
2020-10-12,18.151837900424972,18.840282294818095
2020-10-13,18.242833417953655,19.071114864740228
2020-10-14,18.289535384861274,19.127210344373292
2020-10-15,18.286235082983193,19.036868485754553
2020-10-16,18.284280143576655,18.962253064497325
2020-10-19,18.26520841596559,18.854626326325295
2020-10-20,18.26184702101142,18.803500295130327
2020-10-21,18.19413065924193,18.597026129182424
2020-10-22,18.133496325395523,18.44698021566247
2020-10-23,18.086321137977986,18.355450966502403
2020-10-26,18.023705680675956,18.236643305237827
2020-10-27,18.01284037325614,18.26341233806835
2020-10-28,17.980106707336514,18.220108420848142
2020-10-29,17.924509254902738,18.120139745133386
2020-10-30,17.83617009288331,17.95101001718672
2020-11-02,17.641237725729827,17.542550883700798
2020-11-03,17.565387777457428,17.507036690693198
2020-11-04,17.528652346772766,17.56049335754438
2020-11-05,17.504361364545563,17.617327061677262
2020-11-06,17.534388812454523,17.782508274454422
2020-11-09,17.60271062143343,17.994409432328418
2020-11-10,17.640792321760987,18.07514832889782
2020-11-11,17.66118984116851,18.087814958657102
2020-11-12,17.636882230701328,17.981656245647102
2020-11-13,17.640414741041326,17.964135763940753
2020-11-16,17.704471967394774,18.097341473358963

Answer: 9.0