Question: What is the lower channel value of Keltner Channel for Mid-America Apartment Communities on March 17, 2021? (Standard parameters: middle EMA(20), requiring 4n data points to warm up, using the first data point as the initial value; ATR(10) using Wilder smoothing, multiplier 1.5) 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 = EMA_{n_{ema}}(C); Upper = Middle + 1.5 * ATR_{n_{atr}}^{Wilder}; Lower = Middle - 1.5 * ATR_{n_{atr}}^{Wilder}
Data:
date,close,high,low
2020-11-18,126.06999969482422,131.97000122070312,126.05999755859376
2020-11-19,126.13999938964844,126.72000122070312,123.43000030517578
2020-11-20,126.18000030517578,126.48999786376952,124.91999816894533
2020-11-23,123.7699966430664,126.88999938964844,123.52999877929688
2020-11-24,125.87999725341795,127.30999755859376,124.83999633789062
2020-11-25,125.02999877929688,126.30999755859376,124.41000366210938
2020-11-27,124.0,124.77999877929688,122.63999938964844
2020-11-30,126.16000366210938,126.3000030517578,122.4499969482422
2020-12-01,124.58999633789062,126.31999969482422,123.66999816894533
2020-12-02,123.7300033569336,127.4800033569336,123.25
2020-12-03,123.6500015258789,124.87999725341795,123.33000183105467
2020-12-04,125.12999725341795,125.41999816894533,123.56999969482422
2020-12-07,125.31999969482422,126.11000061035156,124.6500015258789
2020-12-08,123.93000030517578,125.48999786376952,123.69000244140624
2020-12-09,122.9000015258789,125.06999969482422,121.0
2020-12-10,120.18000030517578,122.66999816894533,119.75
2020-12-11,121.66000366210938,121.97000122070312,119.20999908447266
2020-12-14,121.44000244140624,123.6999969482422,121.12999725341795
2020-12-15,123.54000091552734,123.54000091552734,120.5
2020-12-16,123.41000366210938,125.12999725341795,122.52999877929688
2020-12-17,125.58999633789062,126.1999969482422,123.06999969482422
2020-12-18,124.04000091552734,126.27999877929688,123.41000366210938
2020-12-21,124.5999984741211,124.9800033569336,122.33000183105467
2020-12-22,125.27999877929688,125.4000015258789,123.56999969482422
2020-12-23,122.66000366210938,126.25,122.58000183105467
2020-12-24,124.5999984741211,124.61000061035156,122.97000122070312
2020-12-28,124.97000122070312,125.83999633789062,124.0500030517578
2020-12-29,124.25,126.30999755859376,123.4499969482422
2020-12-30,125.0,126.20999908447266,124.1999969482422
2020-12-31,126.69000244140624,126.97000122070312,123.9000015258789
2021-01-04,122.70999908447266,127.37000274658205,122.1500015258789
2021-01-05,122.66999816894533,123.81999969482422,122.3499984741211
2021-01-06,124.6999969482422,124.86000061035156,122.7699966430664
2021-01-07,124.5500030517578,125.33000183105467,123.4499969482422
2021-01-08,125.2699966430664,125.37000274658205,124.0
2021-01-11,124.20999908447266,125.33000183105467,123.16999816894533
2021-01-12,124.69000244140624,124.97000122070312,123.0
2021-01-13,126.41999816894533,127.06999969482422,124.5999984741211
2021-01-14,129.0,129.0800018310547,125.31999969482422
2021-01-15,132.00999450683594,132.13999938964844,127.72000122070312
2021-01-19,130.61000061035156,132.42999267578125,129.99000549316406
2021-01-20,133.16000366210938,133.61000061035156,128.94000244140625
2021-01-21,133.4499969482422,133.52999877929688,131.13999938964844
2021-01-22,134.17999267578125,134.83999633789062,132.22999572753906
2021-01-25,133.86000061035156,134.9600067138672,132.97000122070312
2021-01-26,134.88999938964844,135.4199981689453,133.88999938964844
2021-01-27,131.72999572753906,135.0,131.10000610351562
2021-01-28,132.7899932861328,134.74000549316406,131.02000427246094
2021-01-29,132.75,133.3800048828125,129.8300018310547
2021-02-01,134.97999572753906,135.1300048828125,130.72000122070312
2021-02-02,135.5800018310547,136.42999267578125,133.8699951171875
2021-02-03,134.7100067138672,135.8699951171875,133.67999267578125
2021-02-04,134.83999633789062,137.0,134.0
2021-02-05,134.72000122070312,135.27000427246094,133.2100067138672
2021-02-08,135.49000549316406,136.14999389648438,133.77000427246094
2021-02-09,135.5500030517578,136.24000549316406,134.52000427246094
2021-02-10,136.3000030517578,137.24000549316406,134.85000610351562
2021-02-11,137.97000122070312,138.02000427246094,135.49000549316406
2021-02-12,138.13999938964844,138.39999389648438,136.94000244140625
2021-02-16,138.44000244140625,138.49000549316406,136.50999450683594
2021-02-17,137.72000122070312,138.7899932861328,137.08999633789062
2021-02-18,137.25,138.13999938964844,136.38999938964844
2021-02-19,137.57000732421875,138.22000122070312,137.0
2021-02-22,138.69000244140625,139.11000061035156,136.3300018310547
2021-02-23,142.3000030517578,142.61000061035156,139.33999633789062
2021-02-24,140.50999450683594,142.97999572753906,140.35000610351562
2021-02-25,137.91000366210938,141.99000549316406,137.25
2021-02-26,134.72999572753906,138.25999450683594,134.58999633789062
2021-03-01,135.5399932861328,138.02999877929688,135.47000122070312
2021-03-02,135.3000030517578,136.8699951171875,134.0
2021-03-03,134.60000610351562,136.1699981689453,134.02999877929688
2021-03-04,132.6999969482422,135.2899932861328,131.4499969482422
2021-03-05,133.91000366210938,134.22000122070312,131.8699951171875
2021-03-08,134.22999572753906,136.24000549316406,133.05999755859375
2021-03-09,134.72999572753906,137.0399932861328,134.39999389648438
2021-03-10,134.8300018310547,135.91000366210938,132.8699951171875
2021-03-11,136.5500030517578,137.38999938964844,134.49000549316406
2021-03-12,141.77999877929688,141.7899932861328,137.0
2021-03-15,144.97999572753906,146.30999755859375,140.63999938964844
2021-03-16,144.3800048828125,145.75999450683594,143.0
2021-03-17,145.47000122070312,145.52999877929688,142.82000732421875

Indicator data:
Answer: 133.5101