Table 3.
Comparison of significant differences among the different concentrations of iron.
| Dependent Variable: Regeneration days | |||||||
|---|---|---|---|---|---|---|---|
| (I)concentration | (J) concentration | Mean Difference (I-J) | Std. Error | Sig. | 95% Confidence Interval | ||
| Lower Bound | Upper Bound | ||||||
| LSD | 0mg/l | 10mg/l | -1.07∗ | .235 | .000 | -1.54 | -.61 |
| 15mg/l | -1.78∗ | .235 | .000 | -2.25 | -1.31 | ||
| 20mg/l | -2.67∗ | .235 | .000 | -3.13 | -2.20 | ||
| 30mg/l | -3.37∗ | .235 | .000 | -3.84 | -2.90 | ||
| 10mg/l | 0mg/l | 1.07∗ | .235 | .000 | .61 | 1.54 | |
| 15mg/l | -.70∗ | .235 | .004 | -1.17 | -.24 | ||
| 20mg/l | -1.59∗ | .235 | .000 | -2.06 | -1.12 | ||
| 30mg/l | -2.30∗ | .235 | .000 | -2.76 | -1.83 | ||
| 15mg/l | 0mg/l | 1.78∗ | .235 | .000 | 1.31 | 2.25 | |
| 10mg/l | .70∗ | .235 | .004 | .24 | 1.17 | ||
| 20mg/l | -.89∗ | .235 | .000 | -1.36 | -.42 | ||
| 30mg/l | -1.59∗ | .235 | .000 | -2.06 | -1.12 | ||
| 20mg/l | 0mg/l | 2.67∗ | .235 | .000 | 2.20 | 3.13 | |
| 10mg/l | 1.59∗ | .235 | .000 | 1.12 | 2.06 | ||
| 15mg/l | .89∗ | .235 | .000 | .42 | 1.36 | ||
| 30mg/l | -.70∗ | .235 | .004 | -1.17 | -.24 | ||
| 30mg/l | 0mg/l | 3.37∗ | .235 | .000 | 2.90 | 3.84 | |
| 10mg/l | 2.30∗ | .235 | .000 | 1.83 | 2.76 | ||
| 15mg/l | 1.59∗ | .235 | .000 | 1.12 | 2.06 | ||
| 20mg/l | .70∗ | .235 | .004 | .24 | 1.17 | ||
Based on observed means.
The error term is Mean Square (Error) =0.748.
∗ The mean difference is significant at the 0.05 level.