一个DOE问题

请教各位大师以下一些DOE问题.

如果一个DOE中Block由3个以上层次如何分析,如果其中一个block层次显著如何进行下去,如何划分block的层次,我的数据如下:
date Moldlife 1factor 2factor_1 3factor 4factor 5factor_1 6factor 7factor 8factor 9factor y
24-nov 64 64.0 32.45 9.80 63.5 275 86 35.0 23.35 70 7.69
25-nov 73 59.3 24.60 9.92 60.2 273 79 34.0 23.05 70 2.56
26-nov 76 56.7 32.03 9.92 60.6 274 82 34.0 24.10 70 2.63
27-nov 79 67.5 31.98 9.39 60.6 275 81 33.0 24.60 70 5.88
28-nov 82 57.1 31.11 9.04 65.4 275 78 33.0 24.95 70 2.70
29-nov 85 64.5 31.26 9.85 72.6 276 81 31.5 26.10 70 8.11
30-nov 87 78.5 31.39 9.96 71.9 277 83 32.0 24.18 70 8.33
1-Dec 90 72.9 31.56 9.74 60.7 274 80 33.0 24.78 70 10.00
2-Dec 93 63.1 32.28 9.80 70.1 275 81 33.5 25.93 70 8.33
3-Dec 96 68.1 31.44 9.64 69.8 276 82 33.0 24.88 70 22.22
4-Dec 99 64.4 31.08 9.68 67.7 275 84 33.0 25.20 55 2.63
5-Dec 101 66.5 31.67 9.94 68.9 278 84 33.0 24.78 55 0.00
6-Dec 104 67.7 31.37 9.86 67.4 276 83 33.0 25.85 55 12.82
7-Dec 107 69.9 32.13 9.86 64.6 275 84 33.0 25.63 55 7.89
8-Dec 1 64.7 31.72 10.00 63.8 277 85 33.0 25.68 55 10.53
9-Dec 4 70.5 32.16 9.61 66.2 277 80 32.5 25.60 55 10.00
10-Dec 7 64.1 31.57 9.86 72.3 277 82 32.5 25.58 76 5.00
11-Dec 10 75.2 31.87 9.91 70.2 276 78 32.5 25.73 76 5.00
12-Dec 12 70.6 32.40 10.37 70.8 277 81 32.5 25.60 76 7.89
13-Dec 14 68.8 32.20 10.28 67.7 274 81 33.0 26.05 76 7.69
14-Dec 16 69.2 32.48 10.28 68.0 274 83 33.0 25.83 70 5.00
15-Dec 18 69.4 31.38 9.85 73.7 274 84 32.5 24.90 70 5.00
16-Dec 20 69.5 31.57 9.95 70.2 275 83 32.5 24.61 70 8.33
17-Dec 22 70.6 30.83 9.95 65.7 275 84 33.0 23.83 70 2.63
18-Dec 24 70.6 31.69 10.11 67.3 275 83 33.0 24.58 70 5.56
19-Dec 26 69.4 30.57 10.07 72.4 274 83 32.5 23.83 70 5.13
20-Dec 28 70.1 32.08 10.00 70.5 275 84 32.5 24.33 70 0.00
21-Dec 30 69.2 31.62 10.46 70.3 275 82 33.0 23.55 70 0.00
22-Dec 32 71.3 31.50 10.02 73.1 275 83 33.0 24.85 70 2.70
23-Dec 34 70.2 32.34 10.11 70.1 274 84 32.5 24.83 70 0.00
24-Dec 36 67.5 31.91 10.31 68.5 275 85 33.0 24.70 70 0.00
25-Dec 38 68.6 32.31 10.30 72.8 275 82 33.0 25.83 70 5.00
26-Dec 40 69.2 32.38 10.28 69.1 275 83 33.0 25.78 70 5.13


考虑到moldlife(因子之一)对Y的影响,我打算把其作为code成4个level并作为block,但是当我把其code成为3个level后与code成为4level因子的显著性就会有不同,如何解释.