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. 2018 Apr 9;8:5688. doi: 10.1038/s41598-018-24121-8

Figure 2.

Figure 2

Factorial design analysis. Factorial design analysis of the five most promising additives providing a ramp display showing individual graphs for each additive in the most desirable storage medium combination. Presence of additive was set as “1”, while absence of additive was set as “−1”. The dot on each ramp represents the factor setting or response prediction for the resulting combination.