Question: Calculate the Keltner Channel middle channel value for Southwest Airlines on November 11, 2025. (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
2025-07-21,36.86000061035156,37.27999877929688,36.560001373291016
2025-07-22,37.16999816894531,37.41999816894531,36.84999847412109
2025-07-23,37.43999862670898,37.84999847412109,37.34999847412109
2025-07-24,33.2599983215332,36.25,32.400001525878906
2025-07-25,33.209999084472656,33.38999938964844,32.619998931884766
2025-07-28,32.52000045776367,33.060001373291016,32.119998931884766
2025-07-29,31.100000381469727,32.84000015258789,31.09000015258789
2025-07-30,30.709999084472656,31.36000061035156,30.450000762939453
2025-07-31,30.93000030517578,31.290000915527344,30.3700008392334
2025-08-01,29.799999237060547,30.309999465942383,29.34000015258789
2025-08-04,29.75,30.18000030517578,29.61000061035156
2025-08-05,29.920000076293945,30.229999542236328,29.540000915527344
2025-08-06,29.709999084472656,30.239999771118164,29.559999465942383
2025-08-07,29.559999465942383,30.06999969482422,29.36000061035156
2025-08-08,29.6200008392334,30.01000022888184,29.5
2025-08-11,29.059999465942383,29.93000030517578,28.979999542236328
2025-08-12,30.71999931335449,30.8799991607666,29.32999992370605
2025-08-13,30.96999931335449,31.149999618530277,30.399999618530277
2025-08-14,30.700000762939453,30.81999969482422,30.21999931335449
2025-08-15,31.5,31.770000457763672,30.75
2025-08-18,31.309999465942383,31.420000076293945,31.020000457763672
2025-08-19,31.59000015258789,31.71999931335449,31.21999931335449
2025-08-20,31.18000030517578,31.65999984741211,31.100000381469727
2025-08-21,31.06999969482422,31.11000061035156,30.549999237060547
2025-08-22,32.77000045776367,32.869998931884766,31.21999931335449
2025-08-25,32.52000045776367,32.790000915527344,32.41999816894531
2025-08-26,33.400001525878906,33.5099983215332,32.4900016784668
2025-08-27,33.189998626708984,33.63999938964844,33.029998779296875
2025-08-28,32.97999954223633,33.349998474121094,32.54999923706055
2025-08-29,32.900001525878906,33.06999969482422,32.630001068115234
2025-09-02,32.25,32.939998626708984,31.709999084472656
2025-09-03,32.33000183105469,33.349998474121094,32.119998931884766
2025-09-04,31.1200008392334,32.68000030517578,30.899999618530277
2025-09-05,31.38999938964844,31.86000061035156,30.989999771118164
2025-09-08,31.709999084472656,31.86000061035156,31.200000762939453
2025-09-09,30.989999771118164,31.68000030517578,30.63999938964844
2025-09-10,31.11000061035156,31.43000030517578,30.57999992370605
2025-09-11,31.71999931335449,31.84000015258789,30.600000381469727
2025-09-12,31.65999984741211,32.459999084472656,31.540000915527344
2025-09-15,31.43000030517578,31.790000915527344,31.190000534057617
2025-09-16,31.56999969482422,31.709999084472656,30.709999084472656
2025-09-17,32.119998931884766,32.630001068115234,31.559999465942383
2025-09-18,32.27000045776367,32.400001525878906,31.63999938964844
2025-09-19,32.52000045776367,32.75,31.979999542236328
2025-09-22,32.29999923706055,32.45000076293945,31.90999984741211
2025-09-23,33.34000015258789,33.40999984741211,32.2400016784668
2025-09-24,33.060001373291016,33.900001525878906,32.970001220703125
2025-09-25,31.93000030517578,32.880001068115234,31.65999984741211
2025-09-26,32.529998779296875,32.599998474121094,32.0
2025-09-29,32.7599983215332,33.060001373291016,32.40999984741211
2025-09-30,31.90999984741211,32.88999938964844,30.770000457763672
2025-10-01,32.279998779296875,32.54999923706055,31.809999465942383
2025-10-02,32.310001373291016,32.58000183105469,31.84000015258789
2025-10-03,32.52000045776367,33.4900016784668,32.5099983215332
2025-10-06,32.58000183105469,32.709999084472656,31.770000457763672
2025-10-07,32.38999938964844,32.7599983215332,32.09000015258789
2025-10-08,32.45000076293945,32.70000076293945,32.11000061035156
2025-10-09,31.68000030517578,33.72999954223633,31.46999931335449
2025-10-10,31.290000915527344,32.630001068115234,31.059999465942383
2025-10-13,31.899999618530277,32.31999969482422,31.559999465942383
2025-10-14,33.41999816894531,33.630001068115234,31.420000076293945
2025-10-15,33.560001373291016,33.880001068115234,33.25
2025-10-16,33.290000915527344,34.04999923706055,32.84000015258789
2025-10-17,33.52000045776367,33.79999923706055,33.189998626708984
2025-10-20,34.43000030517578,34.66999816894531,33.599998474121094
2025-10-21,34.68000030517578,34.97999954223633,34.060001373291016
2025-10-22,33.7599983215332,34.75,33.43000030517578
2025-10-23,31.649999618530277,33.150001525878906,31.020000457763672
2025-10-24,32.20000076293945,32.43000030517578,31.3799991607666
2025-10-27,32.25,32.7400016784668,31.8700008392334
2025-10-28,31.09000015258789,32.18000030517578,31.030000686645508
2025-10-29,30.65999984741211,31.1299991607666,30.459999084472656
2025-10-30,30.09000015258789,30.770000457763672,30.049999237060547
2025-10-31,30.299999237060547,30.38999938964844,29.920000076293945
2025-11-03,30.43000030517578,30.76000022888184,29.75
2025-11-04,29.670000076293945,30.170000076293945,29.26000022888184
2025-11-05,31.6200008392334,31.649999618530277,29.799999237060547
2025-11-06,31.51000022888184,31.96999931335449,31.049999237060547
2025-11-07,32.45000076293945,32.470001220703125,30.850000381469727
2025-11-10,32.65999984741211,33.58000183105469,32.470001220703125
2025-11-11,31.989999771118164,32.79999923706055,31.790000915527344

Indicator data:
Answer: 31.8225