| 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | Total | Mean | standard deviation | variable coefficient |
sale + 2 | 62.86 | 13.45 | −3.32 | 58.64 | 22.59 | 3.04 | 23.62 | 8.30 | 1.65 | −3.57 | 187.25 | 18.73 | 24.12 | 1.29 |
sale + 1 | 58.46 | 13.28 | −2.72 | 58.05 | 22.57 | 3.64 | 24.60 | 9.30 | 2.65 | −2.57 | 187.25 | 18.73 | 22.83 | 1.22 |
Begin | 55.26 | 11.55 | −1.72 | 57.02 | 22.52 | 4.64 | 25.60 | 10.30 | 3.65 | −1.57 | 187.25 | 18.73 | 21.71 | 1.16 |