Focus on instructions after the parenthesis 6, please!

Problem 10D14 (part a but using different packing), page 429, using Figures 10-28 and 10-29, estimate the HETP and Cs (capacity actor at flood) for \#2.5 nutter ring as packing. Use 75% of estimated flooding velocity to compute the column diameter. D14. a. We are distilling methanol and water in a column packed with 1-in. ceramic Berl saddles. The bottoms composition is 0.01mol% methanol. The column operates at 1.0 atm pressure. The feed to the column is a saturated liquid at 1000.0kmol/day and is 40.0mol% methanol. L/D=2.0. The distillate product is 99.8mol% methatol. If we will operate at a vapor flow rate that is 80.0% of flooding, calculate the diameter based on conditions at the bottom of the column. Data are available in Tables 2-7 and 103. Vapor is an ideal gas. Viscosity of water at 100.0C is 0.26cP