Question: 海螺水泥从2025年06月06日到2025年07月27日，三指数移动平均的30日线与5日线发生金叉多少次？（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
2024-09-02,20.86
2024-09-03,20.72
2024-09-04,20.54
2024-09-05,20.94
2024-09-06,20.79
2024-09-09,20.42
2024-09-10,19.81
2024-09-11,20.02
2024-09-12,20.16
2024-09-13,20.08
2024-09-18,20.23
2024-09-19,19.93
2024-09-20,19.87
2024-09-23,20.07
2024-09-24,20.91
2024-09-25,21.51
2024-09-26,23.09
2024-09-27,24.2
2024-09-30,26.14
2024-10-08,26.24
2024-10-09,24.09
2024-10-10,24.97
2024-10-11,24.87
2024-10-14,25.77
2024-10-15,25.47
2024-10-16,25.6
2024-10-17,24.98
2024-10-18,25.14
2024-10-21,25.12
2024-10-22,25.22
2024-10-23,25.48
2024-10-24,25.1
2024-10-25,25.45
2024-10-28,26.31
2024-10-29,26.18
2024-10-30,26.79
2024-10-31,26.75
2024-11-01,26.8
2024-11-04,26.58
2024-11-05,27.05
2024-11-06,26.82
2024-11-07,27.7
2024-11-08,27.12
2024-11-11,26.56
2024-11-12,26.36
2024-11-13,26.26
2024-11-14,26.15
2024-11-15,25.67
2024-11-18,26.36
2024-11-19,25.99
2024-11-20,26.07
2024-11-21,25.83
2024-11-22,25.31
2024-11-25,25.2
2024-11-26,25.11
2024-11-27,25.66
2024-11-28,25.67
2024-11-29,25.66
2024-12-02,25.64
2024-12-03,26.03
2024-12-04,25.86
2024-12-05,25.6
2024-12-06,25.85
2024-12-09,25.5
2024-12-10,25.73
2024-12-11,25.65
2024-12-12,26.1
2024-12-13,26.11
2024-12-16,24.77
2024-12-17,24.6
2024-12-18,24.56
2024-12-19,24.45
2024-12-20,24.13
2024-12-23,24.1
2024-12-24,24.41
2024-12-25,24.52
2024-12-26,23.9
2024-12-27,24.03
2024-12-30,23.99
2024-12-31,23.78
2025-01-02,23.35
2025-01-03,23.43
2025-01-06,23.58
2025-01-07,23.8
2025-01-08,23.75
2025-01-09,23.9
2025-01-10,23.73
2025-01-13,23.81
2025-01-14,23.92
2025-01-15,24.18
2025-01-16,24.52
2025-01-17,24.61
2025-01-20,24.56
2025-01-21,24.45
2025-01-22,24.39
2025-01-23,24.48
2025-01-24,24.44
2025-01-27,24.9
2025-02-05,23.73
2025-02-06,23.79
2025-02-07,23.96
2025-02-10,24.06
2025-02-11,24.02
2025-02-12,23.79
2025-02-13,24.1
2025-02-14,23.83
2025-02-17,23.48
2025-02-18,23.39
2025-02-19,23.29
2025-02-20,23.11
2025-02-21,22.67
2025-02-24,22.66
2025-02-25,22.49
2025-02-26,22.66
2025-02-27,23.06
2025-02-28,23.26
2025-03-03,23.31
2025-03-04,23.2
2025-03-05,24.01
2025-03-06,23.96
2025-03-07,24.09
2025-03-10,24.16
2025-03-11,24.2
2025-03-12,23.89
2025-03-13,24.18
2025-03-14,24.36
2025-03-17,25.25
2025-03-18,24.87
2025-03-19,24.84
2025-03-20,24.67
2025-03-21,24.92
2025-03-24,24.75
2025-03-25,24.29
2025-03-26,24.61
2025-03-27,24.76
2025-03-28,24.6
2025-03-31,24.29
2025-04-01,24.2
2025-04-02,24.07
2025-04-03,24.16
2025-04-07,23.65
2025-04-08,24.82
2025-04-09,25.5
2025-04-10,25.7
2025-04-11,25.58
2025-04-14,25.17
2025-04-15,25.38
2025-04-16,25.5
2025-04-17,25.32
2025-04-18,25.11
2025-04-21,24.88
2025-04-22,25.1
2025-04-23,24.88
2025-04-24,24.89
2025-04-25,24.57
2025-04-28,24.54
2025-04-29,24.43
2025-04-30,24.08
2025-05-06,24.02
2025-05-07,24.1
2025-05-08,23.93
2025-05-09,24.0
2025-05-12,23.76
2025-05-13,23.9
2025-05-14,24.06
2025-05-15,23.83
2025-05-16,23.53
2025-05-19,23.48
2025-05-20,23.46
2025-05-21,23.77
2025-05-22,23.76
2025-05-23,23.61
2025-05-26,23.1
2025-05-27,23.1
2025-05-28,23.1
2025-05-29,23.12
2025-05-30,23.23
2025-06-03,22.78
2025-06-04,23.03
2025-06-05,22.8
2025-06-06,22.92
2025-06-09,22.82
2025-06-10,22.72
2025-06-11,22.76
2025-06-12,22.54
2025-06-13,22.35
2025-06-16,22.17
2025-06-17,22.24
2025-06-18,22.05
2025-06-19,21.75
2025-06-20,21.69
2025-06-23,21.58
2025-06-24,21.97
2025-06-25,22.09
2025-06-26,22.14
2025-06-27,21.44
2025-06-30,21.47
2025-07-01,21.43
2025-07-02,22.13
2025-07-03,22.28
2025-07-04,22.16
2025-07-07,22.27
2025-07-08,22.38
2025-07-09,22.42
2025-07-10,22.65
2025-07-11,22.6
2025-07-14,23.17
2025-07-15,22.6
2025-07-16,22.33
2025-07-17,22.35
2025-07-18,22.45
2025-07-21,24.7
2025-07-22,27.17
2025-07-23,25.05
2025-07-24,25.24
2025-07-25,24.39

Indicator data:
date,30日,5日
2025-01-13,23.45775035136536,23.83081850445387
2025-01-14,23.46724631965858,23.91188095096211
2025-01-15,23.526288747570415,24.124688885791528
2025-01-16,23.642976745933776,24.447112356805086
2025-01-17,23.764429038089137,24.63334499950654
2025-01-20,23.86424673969636,24.654892452396368
2025-01-21,23.93386958028623,24.563358196355917
2025-01-22,23.98583141073063,24.464517567148206
2025-01-23,24.049304790321983,24.476377525050452
2025-01-24,24.09906208823394,24.449948870601332
2025-01-27,24.227274368830518,24.760140320290404
2025-02-05,24.128293094523034,24.067053264979172
2025-02-06,24.053445531012137,23.80612650900858
2025-02-07,24.019842478963795,23.833260611464304
2025-02-10,24.009728948474226,23.938220178318407
2025-02-11,23.99478874303458,23.970945173649906
2025-02-12,23.941151703914834,23.831525846272097
2025-02-13,23.95160477575716,23.996078921253467
2025-02-14,23.912974553466096,23.884107135966364
2025-02-17,23.81686778128035,23.590931516564257
2025-02-18,23.717727995542447,23.40818801369293
2025-02-19,23.614313085513125,23.274499082623535
2025-02-20,23.492845582316168,23.108356818564438
2025-02-21,23.30865091224714,22.746103901391677
2025-02-24,23.147846904539332,22.60536140251182
2025-02-25,22.978850433196065,22.453578882742747
2025-02-26,22.864655947174796,22.53441038477094
2025-02-27,22.840373233482897,22.873785637740255
2025-02-28,22.85856173175256,23.17164006104301
2025-03-03,22.886601083947685,23.32953938577193
2025-03-04,22.894068372712066,23.304680360594695
2025-03-05,23.05019589588296,23.847127484172905
2025-03-06,23.180154827584172,24.02787800926311
2025-03-07,23.3193886276798,24.165787627953314
2025-03-10,23.45543228388691,24.24392383145895
2025-03-11,23.582824353400767,24.2780206061692
2025-03-12,23.638789558444298,24.05141317867559
2025-03-13,23.740771891914832,24.142183721409715
2025-03-14,23.86284552340683,24.302637458265067
2025-03-17,24.13093727078771,24.990559785369236
2025-03-18,24.296012928348855,25.003064803099008
2025-03-19,24.433858400547575,24.95505358371018
2025-03-20,24.52212846923146,24.791001440434783
2025-03-21,24.64292461328945,24.88209878498904
2025-03-24,24.715808690888082,24.795841155682858
2025-03-25,24.693989650429888,24.42955102484251
2025-03-26,24.73073263591623,24.499713482104603
2025-03-27,24.78794498754802,24.648422977214125
2025-03-28,24.806804018171476,24.606724578242115
2025-03-31,24.76487195775671,24.372133626007503
2025-04-01,24.70973372495817,24.212611659459327
2025-04-02,24.635977318980085,24.064741322239662
2025-04-03,24.58604726446052,24.07996595068391
2025-04-07,24.44838291458379,23.743643222665856
2025-04-08,24.538863632538746,24.43688482878715
2025-04-09,24.740243884403085,25.228161197926156
2025-04-10,24.95129938757747,25.691925801222286
2025-04-11,25.112319093026695,25.76538032485036
2025-04-14,25.17655773578573,25.46209252893797
2025-04-15,25.26832030333215,25.4449893065858
2025-04-16,25.367739108170575,25.505819781950706
2025-04-17,25.41930832635286,25.393755311842693
2025-04-18,25.423470721090474,25.189007005258016
2025-04-21,25.382552568169817,24.938435011600077
2025-04-22,25.383932322840625,24.994121515994696
2025-04-23,25.342691185866375,24.87744286993241
2025-04-24,25.306003081316145,24.844852610864496
2025-04-25,25.213649737209,24.61766925174348
2025-04-28,25.12541740498633,24.511073650462418
2025-04-29,25.02659109236294,24.40484092404151
2025-04-30,24.875278889724477,24.129781944279376
2025-05-06,24.730995875144338,23.987501515899652
2025-05-07,24.61866988294487,24.005617009513177
2025-05-08,24.489332662958542,23.914871092428136
2025-05-09,24.388951924947236,23.940771806512664
2025-05-12,24.25799630076968,23.796713122236167
2025-05-13,24.169478504563415,23.843470085397097
2025-05-14,24.121988290304866,23.987106913446027
2025-05-15,24.03983030074763,23.89194648998814
2025-05-16,23.91477469882815,23.639519342906638
2025-05-19,23.797738691040788,23.50003059944271
2025-05-20,23.69342373291716,23.43757510908049
2025-05-21,23.660306868696992,23.642004039024506
2025-05-22,23.63158184969594,23.732435517628424
2025-05-23,23.581324359982837,23.665554571099875
2025-05-26,23.44697589122444,23.275122241369104
2025-05-27,23.331680739233253,23.110226689457914
2025-05-28,23.233299520001342,23.05452878186068
2025-05-29,23.15353168145324,23.061384123368335
2025-05-30,23.1065049673578,23.155685927058084
2025-06-03,22.986647289372424,22.888645995361586
2025-06-04,22.930095367378335,22.955676420828915
2025-06-05,22.842021704058443,22.8341021595633
2025-06-06,22.789900318316118,22.873567904795188
2025-06-09,22.72941117414399,22.82853335115897
2025-06-10,22.661623771624946,22.743895320980172
2025-06-11,22.61287843222233,22.7411737010951
2025-06-12,22.53367648480774,22.591533893078534
2025-06-13,22.433299694944026,22.399323687209613
2025-06-16,22.316307635607632,22.2002832802686
2025-06-17,22.230253406651887,22.178959834799485
2025-06-18,22.12424872364656,22.053267499525212
2025-06-19,21.98094123286523,21.802450265323245
2025-06-20,21.848679754571137,21.668754186034967
2025-06-23,21.717215726741482,21.554468758905664
2025-06-24,21.677289159469424,21.799843126156787
2025-06-25,21.668558680620464,22.005580999264527
2025-06-26,21.674325901800877,22.13121375888462
2025-06-27,21.55661813617531,21.68605081538896
2025-06-30,21.463206284290862,21.510285063158246
2025-07-01,21.378468260382263,21.416936078800752
2025-07-02,21.43556384329894,21.883062685357604
2025-07-03,21.516912029303697,22.197702469546286
2025-07-04,21.570181315179628,22.237820937519672
2025-07-07,21.640256965006593,22.314057155750266
2025-07-08,21.724737684262063,22.408116756154683
2025-07-09,21.808799223253725,22.461289434277823
2025-07-10,21.926607877511067,22.631106795386483
2025-07-11,22.02280683925317,22.65475116170764
2025-07-14,22.21214708272978,23.050260502685994
2025-07-15,22.27582925554351,22.803402951357807
2025-07-16,22.283552508785455,22.48601446556617
2025-07-17,22.294743252623235,22.358309589377033
2025-07-18,22.323399230166288,22.381089654697792
2025-07-21,22.757099377525414,23.983993031875425
2025-07-22,23.58451602349707,26.404180476561834
2025-07-23,23.922543767803965,25.87780421571871
2025-07-24,24.24972514408643,25.66010647213291
2025-07-25,24.37807041413351,24.892157094140646

Answer: 8.0