Question: 三花智控2022年07月19日至2023年05月31日, 对于赫尔移动平均的20日线和10日线，有多少次死叉？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
2022-06-07,18.4
2022-06-08,19.06
2022-06-09,18.86
2022-06-10,20.15
2022-06-13,20.7
2022-06-14,21.22
2022-06-15,20.98
2022-06-16,21.88
2022-06-17,22.96
2022-06-20,25.0
2022-06-21,24.3
2022-06-22,24.31
2022-06-23,26.02
2022-06-24,25.1
2022-06-27,27.61
2022-06-28,28.36
2022-06-29,26.45
2022-06-30,27.48
2022-07-01,27.2
2022-07-04,27.75
2022-07-05,27.89
2022-07-06,27.2
2022-07-07,28.4
2022-07-08,27.91
2022-07-11,27.31
2022-07-12,26.43
2022-07-13,28.33
2022-07-14,29.26
2022-07-15,29.22
2022-07-18,28.96
2022-07-19,29.47
2022-07-20,28.33
2022-07-21,27.9
2022-07-22,27.86
2022-07-25,27.45
2022-07-26,28.92
2022-07-27,31.81
2022-07-28,31.31
2022-07-29,32.5
2022-08-01,32.77
2022-08-02,31.91
2022-08-03,29.4
2022-08-04,28.75
2022-08-05,27.67
2022-08-08,30.44
2022-08-09,29.65
2022-08-10,31.33
2022-08-11,30.13
2022-08-12,29.29
2022-08-15,31.06
2022-08-16,30.37
2022-08-17,30.04
2022-08-18,31.18
2022-08-19,29.4
2022-08-22,29.38
2022-08-23,29.69
2022-08-24,27.91
2022-08-25,27.7
2022-08-26,26.9
2022-08-29,27.36
2022-08-30,27.19
2022-08-31,25.64
2022-09-01,25.47
2022-09-02,25.95
2022-09-05,25.98
2022-09-06,28.05
2022-09-07,30.08
2022-09-08,28.8
2022-09-09,28.96
2022-09-13,29.72
2022-09-14,29.26
2022-09-15,27.22
2022-09-16,26.4
2022-09-19,26.79
2022-09-20,28.86
2022-09-21,28.63
2022-09-22,28.0
2022-09-23,26.05
2022-09-26,27.97
2022-09-27,26.7
2022-09-28,25.6
2022-09-29,25.77
2022-09-30,24.6
2022-10-10,22.14
2022-10-11,21.59
2022-10-12,22.88
2022-10-13,21.85
2022-10-14,22.37
2022-10-17,21.93
2022-10-18,22.07
2022-10-19,21.95
2022-10-20,20.6
2022-10-21,21.32
2022-10-24,20.81
2022-10-25,21.38
2022-10-26,21.49
2022-10-27,21.68
2022-10-28,20.65
2022-10-31,21.25
2022-11-01,21.88
2022-11-02,23.18
2022-11-03,23.14
2022-11-04,24.21
2022-11-07,24.0
2022-11-08,23.71
2022-11-09,23.75
2022-11-10,22.81
2022-11-11,23.36
2022-11-14,22.86
2022-11-15,23.42
2022-11-16,22.6
2022-11-17,22.05
2022-11-18,22.24
2022-11-21,22.96
2022-11-22,22.25
2022-11-23,22.94
2022-11-24,22.75
2022-11-25,22.1
2022-11-28,22.18
2022-11-29,20.92
2022-11-30,22.0
2022-12-01,22.4
2022-12-02,21.8
2022-12-05,22.7
2022-12-06,22.57
2022-12-07,22.99
2022-12-08,22.82
2022-12-09,23.13
2022-12-12,23.36
2022-12-13,23.03
2022-12-14,23.24
2022-12-15,23.86
2022-12-16,23.09
2022-12-19,23.29
2022-12-20,23.05
2022-12-21,22.81
2022-12-22,22.49
2022-12-23,21.74
2022-12-26,22.36
2022-12-27,22.0
2022-12-28,21.06
2022-12-29,21.18
2022-12-30,21.22
2023-01-03,20.82
2023-01-04,20.6
2023-01-05,20.88
2023-01-06,21.08
2023-01-09,21.63
2023-01-10,22.37
2023-01-11,23.02
2023-01-12,23.04
2023-01-13,23.8
2023-01-16,24.42
2023-01-17,24.6
2023-01-18,24.9
2023-01-19,24.93
2023-01-20,24.59
2023-01-30,26.26
2023-01-31,25.56
2023-02-01,26.0
2023-02-02,25.81
2023-02-03,25.3
2023-02-06,24.89
2023-02-07,27.38
2023-02-08,26.85
2023-02-09,27.1
2023-02-10,27.96
2023-02-13,27.18
2023-02-14,27.04
2023-02-15,27.04
2023-02-16,26.55
2023-02-17,26.54
2023-02-20,26.98
2023-02-21,26.86
2023-02-22,26.51
2023-02-23,26.31
2023-02-24,25.57
2023-02-27,26.14
2023-02-28,25.55
2023-03-01,25.32
2023-03-02,23.85
2023-03-03,24.09
2023-03-06,24.5
2023-03-07,23.98
2023-03-08,23.86
2023-03-09,23.92
2023-03-10,23.37
2023-03-13,23.85
2023-03-14,23.72
2023-03-15,23.87
2023-03-16,23.66
2023-03-17,23.59
2023-03-20,23.5
2023-03-21,24.27
2023-03-22,24.37
2023-03-23,22.98
2023-03-24,23.73
2023-03-27,25.56
2023-03-28,25.75
2023-03-29,26.08
2023-03-30,26.03
2023-03-31,25.75
2023-04-03,25.2
2023-04-04,25.1
2023-04-06,25.29
2023-04-07,24.75
2023-04-10,24.36
2023-04-11,24.41
2023-04-12,24.23
2023-04-13,23.8
2023-04-14,24.09
2023-04-17,24.59
2023-04-18,24.38
2023-04-19,24.5
2023-04-20,23.49
2023-04-21,22.67
2023-04-24,22.78
2023-04-25,22.16
2023-04-26,23.47
2023-04-27,23.32
2023-04-28,23.34
2023-05-04,23.83
2023-05-05,23.29
2023-05-08,22.96
2023-05-09,22.63
2023-05-10,23.08
2023-05-11,23.42
2023-05-12,23.2
2023-05-15,23.81
2023-05-16,23.91
2023-05-17,24.5
2023-05-18,25.63
2023-05-19,25.55
2023-05-22,25.78
2023-05-23,25.51
2023-05-24,25.06
2023-05-25,25.77
2023-05-26,26.18
2023-05-29,25.55
2023-05-30,25.4
2023-05-31,25.99

Indicator data:
date,20日,10日
2022-07-07,28.706132034632038,27.87089898989899
2022-07-08,28.693288311688313,27.985414141414143
2022-07-11,28.562242424242424,27.9160909090909
2022-07-12,28.27684242424242,27.49571717171717
2022-07-13,28.112763203463196,27.435505050505054
2022-07-14,28.15527922077921,27.840525252525254
2022-07-15,28.348150216450215,28.48630303030303
2022-07-18,28.58729783549784,29.021919191919192
2022-07-19,28.8506735930736,29.477222222222224
2022-07-20,28.98532987012988,29.44028282828283
2022-07-21,28.974404761904772,29.007808080808076
2022-07-22,28.872243290043293,28.434222222222218
2022-07-25,28.67561558441559,27.87108080808081
2022-07-26,28.59548398268398,27.785595959595963
2022-07-27,28.88970043290043,28.762494949494947
2022-07-28,29.364396536796534,30.077191919191915
2022-07-29,30.050188744588734,31.510595959595957
2022-08-01,30.82801515151515,32.675939393939395
2022-08-02,31.490281385281385,33.19665656565656
2022-08-03,31.773598268398267,32.50804040404041
2022-08-04,31.681529870129868,31.132313131313136
2022-08-05,31.217749783549777,29.41982828282828
2022-08-08,30.84302294372294,28.64778787878788
2022-08-09,30.486610389610387,28.500131313131316
2022-08-10,30.332254112554107,29.241646464646465
2022-08-11,30.207423376623375,29.932606060606062
2022-08-12,29.981483982683983,30.222767676767678
2022-08-15,29.924776190476194,30.459282828282824
2022-08-16,29.935786580086585,30.56413131313131
2022-08-17,30.00216363636364,30.474848484848483
2022-08-18,30.21300259740259,30.584363636363634
2022-08-19,30.273938961038954,30.412575757575755
2022-08-22,30.200690043290034,30.047444444444448
2022-08-23,30.080519480519477,29.70238383838385
2022-08-24,29.742177922077918,29.09103030303031
2022-08-25,29.30104025974025,28.341636363636365
2022-08-26,28.73529956709956,27.519606060606066
2022-08-29,28.162309523809512,26.984676767676774
2022-08-30,27.645927272727267,26.685858585858586
2022-08-31,27.041735497835496,26.27440404040404
2022-09-01,26.410275324675318,25.794343434343432
2022-09-02,25.877838961038957,25.494818181818186
2022-09-05,25.478791341991343,25.3999898989899
2022-09-06,25.454348051948053,25.96527272727273
2022-09-07,25.923193939393933,27.338787878787873
2022-09-08,26.5438632034632,28.593282828282828
2022-09-09,27.219824675324674,29.423474747474746
2022-09-13,27.919774458874464,29.944969696969697
2022-09-14,28.52819090909091,30.070868686868682
2022-09-15,28.845833766233774,29.41487878787878
2022-09-16,28.828279220779223,28.2810707070707
2022-09-19,28.595487445887443,27.228959595959594
2022-09-20,28.461165367965368,27.00838383838384
2022-09-21,28.393574458874458,27.339313131313133
2022-09-22,28.304542857142856,27.801333333333332
2022-09-23,27.995491774891775,27.658666666666665
2022-09-26,27.739294805194806,27.58221212121212
2022-09-27,27.436444588744585,27.238191919191916
2022-09-28,27.04500043290043,26.634949494949495
2022-09-29,26.66623896103896,26.009717171717174
2022-09-30,26.16686017316017,25.326252525252528
2022-10-10,25.365071428571433,24.097939393939395
2022-10-11,24.349908658008665,22.68926262626262
2022-10-12,23.42576406926407,21.83790909090909
2022-10-13,22.58250692640693,21.328474747474743
2022-10-14,21.959532900432905,21.265868686868682
2022-10-17,21.468377922077924,21.392585858585857
2022-10-18,21.11785324675325,21.628525252525247
2022-10-19,20.90376233766234,21.759484848484846
2022-10-20,20.657079220779217,21.520878787878786
2022-10-21,20.513278354978354,21.259787878787872
2022-10-24,20.41476277056277,20.956343434343427
2022-10-25,20.416359307359308,20.868313131313126
2022-10-26,20.49704675324675,20.957060606060605
2022-10-27,20.635607792207786,21.2239898989899
2022-10-28,20.69188138528138,21.2339898989899
2022-10-31,20.750856277056275,21.224343434343435
2022-11-01,20.880600865800865,21.34048484848485
2022-11-02,21.20157835497836,21.8730202020202
2022-11-03,21.647774025974023,22.520171717171717
2022-11-04,22.229549783549782,23.37171717171717
2022-11-07,22.82058051948052,24.047666666666668
2022-11-08,23.318387445887446,24.386050505050502
2022-11-09,23.72070995670996,24.396232323232322
2022-11-10,23.918403463203465,24.02545454545454
2022-11-11,24.03015974025974,23.62635353535354
2022-11-14,24.01157748917749,23.215969696969697
2022-11-15,23.952247186147183,23.06057575757576
2022-11-16,23.779413419913418,22.87735353535354
2022-11-17,23.47274329004329,22.597353535353534
2022-11-18,23.123745021645025,22.307727272727266
2022-11-21,22.860061038961042,22.28663636363636
2022-11-22,22.627317748917754,22.260444444444442
2022-11-23,22.51240043290044,22.417858585858585
2022-11-24,22.462782251082256,22.59110101010101
2022-11-25,22.376135497835502,22.586161616161615
2022-11-28,22.29032770562771,22.436606060606056
2022-11-29,22.068267965367966,21.97066666666667
2022-11-30,21.902104329004324,21.665151515151518
2022-12-01,21.84384069264069,21.64577777777778
2022-12-02,21.796067532467532,21.719505050505052
2022-12-05,21.855872727272725,21.99951515151515
2022-12-06,21.95374935064935,22.327454545454543
2022-12-07,22.111890043290042,22.682484848484847
2022-12-08,22.29658614718614,22.90439393939394
2022-12-09,22.514214718614713,23.10116161616162
2022-12-12,22.764680952380946,23.270656565656566
2022-12-13,22.981496536796534,23.327111111111112
2022-12-14,23.163400865800863,23.339626262626265
2022-12-15,23.36488268398268,23.48557575757576
2022-12-16,23.485864069264068,23.49854545454545
2022-12-19,23.558481818181814,23.460878787878787
2022-12-20,23.562834199134194,23.336070707070707
2022-12-21,23.487722510822504,23.1449696969697
2022-12-22,23.3414303030303,22.850505050505053
2022-12-23,23.07089307359307,22.41047474747475
2022-12-26,22.80549177489177,22.118939393939396
2022-12-27,22.5347974025974,21.913656565656566
2022-12-28,22.1863974025974,21.594111111111115
2022-12-29,21.82753333333333,21.277555555555555
2022-12-30,21.49384329004329,21.061878787878786
2023-01-03,21.174450216450218,20.85732323232323
2023-01-04,20.88232467532468,20.651
2023-01-05,20.660503030303033,20.57510101010101
2023-01-06,20.530816883116884,20.643727272727272
2023-01-09,20.544671428571426,20.914474747474745
2023-01-10,20.732145454545453,21.435383838383842
2023-01-11,21.095516017316015,22.15372727272727
2023-01-12,21.555147619047617,22.811434343434343
2023-01-13,22.11108354978355,23.44735353535353
2023-01-16,22.74525194805195,24.065818181818184
2023-01-17,23.399016450216457,24.585616161616162
2023-01-18,24.041259307359315,24.98591919191919
2023-01-19,24.607233333333333,25.24177777777778
2023-01-20,25.023672294372297,25.259525252525254
2023-01-30,25.470846753246757,25.520636363636367
2023-01-31,25.82367359307359,25.730333333333334
2023-02-01,26.126292640692633,25.972878787878795
2023-02-02,26.344102164502157,26.087474747474744
2023-02-03,26.403816450216446,26.007303030303024
2023-02-06,26.31471645021645,25.658525252525248
2023-02-07,26.392574891774892,25.86788888888889
2023-02-08,26.535707792207795,26.274505050505052
2023-02-09,26.744832900432904,26.786171717171715
2023-02-10,27.05880562770563,27.37964646464647
2023-02-13,27.291564502164505,27.739363636363638
2023-02-14,27.45564415584416,27.74438383838384
2023-02-15,27.55203766233766,27.55476767676767
2023-02-16,27.540047186147184,27.207818181818183
2023-02-17,27.467071861471858,26.832545454545457
2023-02-20,27.391457575757567,26.656525252525256
2023-02-21,27.285657142857133,26.63914141414142
2023-02-22,27.14126666666666,26.61721212121213
2023-02-23,26.95353766233766,26.52840404040404
2023-02-24,26.66793203463203,26.232333333333333
2023-02-27,26.418,25.998252525252525
2023-02-28,26.15696536796537,25.731575757575758
2023-03-01,25.88914025974026,25.478979797979793
2023-03-02,25.48517532467532,24.913575757575757
2023-03-03,25.028314285714288,24.35670707070707
2023-03-06,24.62697402597402,24.009828282828284
2023-03-07,24.260277489177486,23.806747474747482
2023-03-08,23.95474069264069,23.685474747474757
2023-03-09,23.714483116883116,23.671828282828283
2023-03-10,23.479494805194808,23.573444444444448
2023-03-13,23.32181904761905,23.542202020202023
2023-03-14,23.22789740259741,23.544959595959593
2023-03-15,23.209940692640696,23.62689898989899
2023-03-16,23.236992207792213,23.66578787878788
2023-03-17,23.269619480519484,23.67249494949495
2023-03-20,23.291899134199134,23.615676767676764
2023-03-21,23.391754545454553,23.73195959595959
2023-03-22,23.554563636363646,23.958717171717172
2023-03-23,23.601126839826843,23.88025252525252
2023-03-24,23.63843463203463,23.77335353535354
2023-03-27,23.849390043290036,24.127878787878796
2023-03-28,24.199304761904756,24.771262626262626
2023-03-29,24.667142857142856,25.50980808080808
2023-03-30,25.147768831168825,26.11693939393939
2023-03-31,25.54271082251082,26.40364646464646
2023-04-03,25.788600865800866,26.24020202020202
2023-04-04,25.895676190476188,25.843171717171717
2023-04-06,25.928865800865804,25.470434343434345
2023-04-07,25.862376623376615,25.097515151515154
2023-04-10,25.675075757575758,24.71720202020202
2023-04-11,25.404637662337656,24.428696969696972
2023-04-12,25.081061038961035,24.214737373737375
2023-04-13,24.71578874458874,23.97660606060606
2023-04-14,24.396125108225103,23.846868686868685
2023-04-17,24.195377056277056,23.943959595959598
2023-04-18,24.079209956709956,24.112282828282826
2023-04-19,24.04410303030303,24.302242424242422
2023-04-20,23.948388744588744,24.214060606060603
2023-04-21,23.726996103896106,23.76040404040404
2023-04-24,23.456418181818183,23.190080808080808
2023-04-25,23.11497359307359,22.579212121212127
2023-04-26,22.911232467532464,22.418272727272733
2023-04-27,22.810941125541124,22.56480808080808
2023-04-28,22.779575757575756,22.88846464646465
2023-05-04,22.846532467532466,23.295767676767678
2023-05-05,22.906293939393937,23.544060606060608
2023-05-08,22.935074458874457,23.511000000000006
2023-05-09,22.918650649350646,23.238505050505058
2023-05-10,22.92090216450216,23.018202020202022
2023-05-11,22.97797142857143,22.979565656565665
2023-05-12,23.044441125541123,23.038828282828288
2023-05-15,23.16054632034632,23.28246464646465
2023-05-16,23.307164935064936,23.598929292929295
2023-05-17,23.52784502164502,24.013343434343437
2023-05-18,23.909486147186144,24.649838383838386
2023-05-19,24.365988311688312,25.283535353535353
2023-05-22,24.858301298701292,25.79989898989899
2023-05-23,25.28849480519481,26.041414141414137
2023-05-24,25.570484848484845,25.952464646464648
2023-05-25,25.80441471861472,25.83286868686869
2023-05-26,26.032789177489178,25.86336363636364
2023-05-29,26.173887012987006,25.851434343434345
2023-05-30,26.220799999999997,25.759676767676766
2023-05-31,26.237476190476194,25.772474747474746

Answer: 13.0