• From these curves it will be obvious ( or noted , or noticed ) that ...
• It has been apparent in recent reports that ...
• It is evident ( or obvious , or clear ) from the curve that ...
• One can see from the equation that ...
• It is ( or can be ) seen from Fig . 2 that ...
• Referring to Fig.5 it will be observed that ...
• Reference to Eq. (18-35) shows that ...
• With reference to Fig. 16-5, it can be seen that ...