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:
| Route Number | Terminals | Terminals | Via | Operator | Notes |
| --- | --- | --- | --- | --- | --- |
| 310 \n310A \n311 | Waltham Cross Bus Station | Hertford Bus Station | Cheshunt,\nBroxbourne,\nWare | Arriva Shires & Essex,\nCentrebus | Mon-Sat (310), Mon-Fri peaks (310A),. |
| 323 | Broxbourne Station | Essex Road Industrial Estate | Hoddesdon | SM Coaches | Mon-Fri peak hours. Herts CC contract. Times |
| 392 | Harlow Town Station | Rye Park Old Highway | Nazeing,\nBroxbourne | Network Harlow | Mon-Sat. Essex CC contract. Times |
| 641 | Broxbourne Station | Hatfield Business Park | Hertford, University of Hertfordshire | Uno | Mon-Fri University term time only. |
| C3/C3A | Waltham Cross | Harlow Bus Station | Cheshunt, Broxbourne | Trustybus | Mon-fri. 2 buses per hour operate to Harlow. Sat 1 bus per hour to Harlow via Hunsdon |
| C4 | Waltham Cross Bus Station | Hertford Bus Station | Cheshunt, Ware | Trustybus | Sundays. |
Question:
how many bus routes are handled by trustybus?
Answer:
2