The table given below shows the production of bikes by a company during the second half of 2021.

Month Type	July	August	September	October	November	December
P	58	38	56	15	45	33
Q	89	46	45	26	36	40
R	54	64	76	80	54	41
S	72	53	65	37	21	44

In which month was the production of all types of bikes the lowest?