The state of the book is:

$\backslash$table$[[,$Trader,Time,Price,Quantity,Display$],[,$Elin,$9\mathrm{.}45,10\mathrm{.}20,800,$Y$],[,$Sophia,$9\mathrm{.}40,10\mathrm{.}09,500,$Y$],[,$Will,$9$:$38,10\mathrm{.}09,100,$Y$],[,$Adam,$9\mathrm{.}43,10\mathrm{.}05,300,N$