Reading candlesticks is actually fairly simple. The height of each candle is determined by the opening and closing price of the timeframe the candle represents; this may typically be for 15 minutes, 30 minutes, one hour, four hours, one day, one week, and one month. The tail or wick of each candle, or the single line extending above and below the box, represents the lowest price for the candle and the highest price, but not the closing price. This is simply the highest point reached during the timeframe of the candle. If the body is solid, black, or red, it indicates the price closed lower. Hollow candles that are white or green mean the price closed higher than when the candle started.