The graph shows the income of four cafes in New York over last year

The graph provides information about the income trends of four cafes over the last year.
Overall, although the income for all four cafes showed some fluctuation from month to month, we can identify some general upward and downward trends. As regards the earnings for The Tea Room, they were down over the year, falling significantly from almost $160, 000 earnings a month to around $50, 000 in December.
By contrast, the income for the other three cafes went up by varying degrees. There was a rise in Cafe Cool's sales over the first ten months, followed by a sudden increase to $120, 000. Furthermore, the income for both Internet Express and the Wifi Cafe also went up in December. The former experienced a steady fall to June but, after that, income rose steadily, ending the year at approximately $130, 000. Likewise, the trend for Wifi Cafe was upward. Between January and July, earnings doubled from $50, 000 to nearly $100, 000 and then rocketed to around $190, 000.
It is noticeable that the income for The Tea Room is lower in the winter months than for the other three cafes.