The raw data from grain$-$size test is shown below. What is the value of $C_C$ and $C_u?$

$\backslash$table$[[$Sieve #$,$Sieve Size $($mm$),$Mass Retained $($g$)],[3/4",19\mathrm{.}00,773],[$# $4,4\mathrm{.}75,3316\mathrm{.}1],[$# $10,2\mathrm{.}00,298],[$# $30,0\mathrm{.}595,616\mathrm{.}1],[$# $50,0\mathrm{.}297,403\mathrm{.}9],[$# $100,0\mathrm{.}150,202\mathrm{.}4],[$# $200,0\mathrm{.}075,52\mathrm{.}2],[$Pan$,,14\mathrm{.}4]]$