Table:
text: Honor Oak Park railway station
Services
Services
Platform Frequency_per_hour Destination Operator_ Line
1 4 Highbury & Islington London Overground East London
1 4 Dalston Junction London Overground East London
1 4 London Bridge Southern Metro
2 4 Crystal Palace London Overground East London
2 4 West Croydon London Overground East London
2 2 London Victoria (Mon-Sat) Southern Metro
2 2 Caterham (Mon-Sat) Southern Metro
2 2 West Croydon (Peaks & Sun only) Southern Metro
2 2 Tattenham Corner (Sun only) Southern Metro

Question: What is the platform for Honor Oak Park train station if the frequency (per hour) is 4 and the destination is West Croydon?

Question: What is the highest platform number of Honor Oak Park station if the frequency (per hour) is 4, the operator is London Overground and the destination is West Croydon?