Question: During June 08, 2023 to July 18, 2023, what percentage of days had Deckers Brands's low price less the middle channel of Moving Average Envelope? (Standard parameters: middle band SMA(20), upper and lower bands +/- 10%) Using unadjusted prices, write down the indicator formula, collect the raw data, calculate the answer, and keep four decimal places. Please list the raw data and key calculation process.
Formula: Middle = SMA_n(P); Upper = Middle * 1.1; Lower = Middle * 0.9
Data:
date,close,low
2023-05-11,81.73999786376953,81.57167053222656
2023-05-12,81.76333618164062,80.9366683959961
2023-05-15,81.91999816894531,81.2699966430664
2023-05-16,78.88833618164062,77.88500213623047
2023-05-17,78.3949966430664,77.40333557128906
2023-05-18,78.75166320800781,77.81666564941406
2023-05-19,75.79833221435547,73.62333679199219
2023-05-22,76.03333282470703,75.22666931152344
2023-05-23,74.79833221435547,73.94499969482422
2023-05-24,73.38833618164062,72.85166931152344
2023-05-25,75.00166320800781,73.52833557128906
2023-05-26,77.52999877929688,70.72666931152344
2023-05-30,81.5199966430664,78.36333465576172
2023-05-31,79.16666412353516,77.69667053222656
2023-06-01,77.50166320800781,77.375
2023-06-02,79.46333312988281,78.74666595458984
2023-06-05,80.95999908447266,79.55999755859375
2023-06-06,81.92333221435547,80.90333557128906
2023-06-07,83.02166748046875,81.84500122070312
2023-06-08,81.83000183105469,80.91166687011719
2023-06-09,81.38833618164062,80.96666717529297
2023-06-12,83.4816665649414,81.2750015258789
2023-06-13,81.78666687011719,81.55999755859375
2023-06-14,84.45500183105469,81.1866683959961
2023-06-15,85.336669921875,83.73999786376953
2023-06-16,85.45333099365234,84.63833618164062
2023-06-20,84.7249984741211,83.66500091552734
2023-06-21,85.02333068847656,84.79666900634766
2023-06-22,83.92500305175781,83.62333679199219
2023-06-23,84.35333251953125,82.85333251953125
2023-06-26,84.90666961669922,84.19166564941406
2023-06-27,85.33999633789062,84.73999786376953
2023-06-28,86.6866683959961,85.3949966430664
2023-06-29,85.66166687011719,85.46499633789062
2023-06-30,87.9433364868164,86.3316650390625
2023-07-03,88.57666778564453,88.08499908447266
2023-07-05,89.09833526611328,87.83000183105469
2023-07-06,88.32666778564453,87.16666412353516
2023-07-07,87.86333465576172,87.57499694824219
2023-07-10,90.14167022705078,88.13166809082031
2023-07-11,91.90333557128906,90.09500122070312
2023-07-12,92.22000122070312,91.42666625976562
2023-07-13,89.89833068847656,89.80833435058594
2023-07-14,90.58000183105467,89.93333435058594
2023-07-17,91.24166870117188,90.35333251953124
2023-07-18,91.11166381835938,90.27666473388672

Indicator data:
date,Upper,Middle,Lower,low
2023-06-08,86.86672397613525,78.96974906921386,71.07277416229248,80.91166687011719
2023-06-09,86.84738258361817,78.95216598510743,71.05694938659668,80.96666717529297
2023-06-12,86.94189075469971,79.03808250427247,71.13427425384522,81.2750015258789
2023-06-13,86.93455753326417,79.03141593933105,71.12827434539795,81.55999755859375
2023-06-14,87.24072414398194,79.30974922180175,71.37877429962158,81.1866683959961
2023-06-15,87.62251617431642,79.65683288574219,71.69114959716798,83.73999786376953
2023-06-16,87.99110790252685,79.99191627502441,71.99272464752197,84.63833618164062
2023-06-20,88.48207454681398,80.4382495880127,72.39442462921143,83.66500091552734
2023-06-21,88.97652442932129,80.88774948120117,72.79897453308105,84.79666900634766
2023-06-22,89.47849132537843,81.34408302307129,73.20967472076417,83.62333679199219
2023-06-23,90.0815661239624,81.89233283996582,73.70309955596923,82.85333251953125
2023-06-26,90.62634147644044,82.3875831604004,74.14882484436036,84.19166564941406
2023-06-27,91.0558913421631,82.77808303833008,74.50027473449707,84.73999786376953
2023-06-28,91.34005828857423,83.03641662597656,74.7327749633789,85.3949966430664
2023-06-29,91.69728343963624,83.36116676330566,75.0250500869751,85.46499633789062
2023-06-30,92.27157546997071,83.8832504272461,75.4949253845215,86.3316650390625
2023-07-03,92.77280887603762,84.33891716003419,75.90502544403077,88.08499908447266
2023-07-05,93.22041736602783,84.7458339691162,76.2712505722046,87.83000183105469
2023-07-06,93.57260082244873,85.06600074768066,76.5594006729126,87.16666412353516
2023-07-07,93.83889251708985,85.3080841064453,76.77727569580078,87.57499694824219
2023-07-10,94.29603427886964,85.72366752624512,77.15130077362062,88.13166809082031
2023-07-11,94.8743592453003,86.24941749572754,77.62447574615479,90.09500122070312
2023-07-12,95.35496765136719,86.68633422851562,78.01770080566406,91.42666625976562
2023-07-13,95.80110916137697,87.0919174194336,78.38272567749024,89.80833435058594
2023-07-14,96.13798416137696,87.39816741943359,78.65835067749023,89.93333435058594
2023-07-17,96.46275909423828,87.69341735839843,78.92407562255859,90.35333251953124
2023-07-18,96.77396739959718,87.9763339996338,79.17870059967042,90.27666473388672

Answer: 0.0