Table 3 Experimental and predicted data
From: Optimization of biogas production from anaerobic co-digestion of fish waste and water hyacinth
Std | Run | Coded values | Actual values | Actual values | Predicted values | ||||
|---|---|---|---|---|---|---|---|---|---|
X1 | X2 | X3 | X1 | X2 | X3 | ||||
13 | 1 | 0 | 0 | α− | 50 | 10 | 81.6 | 573 | 563.11 |
12 | 2 | 0 | α+ | 0 | 50 | 18.41 | 90 | 325.5 | 322.47 |
14 | 3 | 0 | 0 | 2 | 50 | 10 | 98.41 | 662 | 657.86 |
11 | 4 | 0 | − 2 | 0 | 50 | 1.591 | 90 | 115 | 104 |
2 | 5 | 1 | − 1 | − 1 | 75 | 5 | 85 | 231 | 240.09 |
7 | 6 | − 1 | 1 | 1 | 25 | 15 | 95 | 690 | 690.83 |
5 | 7 | − 1 | − 1 | 1 | 25 | 5 | 95 | 434.5 | 442.93 |
4 | 8 | 1 | 1 | − 1 | 75 | 15 | 85 | 250.5 | 251.99 |
10 | 9 | 2 | 0 | 0 | 92.04 | 10 | 90 | 152 | 147.07 |
16 | 10 | 0 | 0 | 0 | 50 | 10 | 90 | 648 | 647.47 |
17 | 11 | 0 | 0 | 0 | 50 | 10 | 90 | 648.5 | 647.47 |
6 | 12 | 1 | − 1 | 1 | 75 | 5 | 95 | 249.5 | 251.93 |
9 | 13 | − 2 | 0 | 0 | 7.955 | 10 | 90 | 601 | 591.9 |
8 | 14 | 1 | 1 | 1 | 75 | 15 | 95 | 254 | 257.33 |
3 | 15 | − 1 | 1 | − 1 | 25 | 15 | 85 | 582.5 | 589.99 |
1 | 16 | − 1 | − 1 | − 1 | 25 | 5 | 85 | 329 | 335.59 |
15 | 17 | 0 | 0 | 0 | 50 | 10 | 90 | 643.5 | 647.47 |