Based on past Japan Unemployment Rate news events there is a 75% chance of GBPUSD trending downwards. A price movement of 30 could occur if the released value is < 2.5%. Historical events that allowed us to draw this conclusion

31 May 09:30	29 Mar 10:30
01 Feb 10:30	30 Nov 10:30
01 Oct 09:30	30 Jul 09:30

All references to movement sizes are expressed assuming a lot size of 100,000 units (“standard account”).