Text output and hrly coal production

rednet.open("left")
mon = peripheral.wrap("right")

local total_counted = 0
local counted_hour = 0
local old_total_counted = 0
local lst_of_counted = {}
local cycle = 0

function sum(t)
    local sum = 0
    for k,v in pairs(t) do
        sum = sum + v
    end

    return sum
end


while true do

    local currently_counted = 0

    x,y,z = rednet.receive()

    old_total_counted = total_counted
    table.insert(lst_of_counted,old_total_counted)
    cycle = cycle+1
    total_counted = y
    currently_counted = y - old_total_counted

    if cycle > 11 then
        table.remove(lst_of_counted, 1)
        --delete last item of table and then sum together all
        counted_hour = sum(lst_of_counted)
        end

    mon.clear()
    print("+-------------------------------------+")
    print("\n")
    print("\nWe have produced a total of", total_counted, "pieces of coal!\n")
    print(total_counted,"makes", math.floor(total_counted/64),"stacks of coal!\n")
    print("In the last batch there was", currently_counted, "pieces of coal!\n")
    if cycle > 10 then
        print("In the last hour we have produced", counted_hour,"pieces of coal!")
        print("\n")
        print("\n")
        print("+-------------------------------------+")
    else do
        print("In the last hour we have produced [N/A] pieces of coal!") end
        print("\n")
        print("\n")
        print(lst_of_counted)
        print("+-------------------------------------+")
    end
end