Companies table:
| Company | Number of employees | Median age |
|---|---|---|
| A | 32 | 24 |
| B | 28 | 30 |
| C | 43 | 39 |
| D | 39 | 45 |
| E | 35 | 49 |
| F | 29 | 54 |
| G | 23 | 59 |
| H | 16 | 63 |
The age of all employees are integers. Age of every employee in A is strictly less than every employee in B; in B less than C; ... in G less than H.
The median age of an employee across the eight companies is ______