Table 4: Estimated Effects for the C1 Conversion

Factors Effects
X1: (TOS)  3.06
X2: (GHSV-C2)  -5.04
X3: (XC1) -25.06
X4: (Temp.) 17.75
X1X2 -4.34
X1X3 -0.01
X1X4 -18.95
X2X3 -0.025
X2X4 1.7
X3X4 -3.05