Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Date | Visitor | Score | Home | Decision | Attendance | Series |
| --- | --- | --- | --- | --- | --- | --- |
| April 4 | St. Louis | 1 – 0 | Philadelphia | Hall | 10649.0 | Blues lead 1–0 |
| April 6 | St. Louis | 3 – 4 | Philadelphia | Hall | 11111.0 | Series tied 1–1 |
| April 10 | Philadelphia | 2 – 3 | St. Louis | Hall | 10867.0 | Blues lead 2–1 |
| April 11 | Philadelphia | 2 – 5 | St. Louis | Hall | 11070.0 | Blues lead 3–1 |
| April 13 | St. Louis | 1 – 6 | Philadelphia | Hall | 10587.0 | Blues lead 3–2 |
| April 16 | Philadelphia | 2 – 1 | St. Louis | Hall | 13738.0 | Series tied 3–3 |
| April 18 | St. Louis | 3 – 1 | Philadelphia | Hall | 14646.0 | Blues win 4–3 |
Question:
What was the series score when st. louis was away on april 18?
Answer:
Blues win 4–3