CoinDesk Bitcoin Price Index

Info on how this value was calculated
Based on the following values:
USD:
BTC-e$494.00
Bitstamp$501.00
Bitfinex$502.13
CNY:
BTC China¥3,113.45
OKCoin¥3,116.89
Last updated: Apr 20, 2014 at 16:50 BST