text -1 150 This indicator shows the rate of text -1 160 change of coal stored in markets. text -1 200 It shows the change over the previous 12 text -1 210 months. If the arrow is pointing upwards text -1 220 and is green, the coal store grew over text -1 230 the past 12 months. If it is pointing text -1 240 down and red, the coal store shrank. text -1 255 The larger the arrow, text -1 265 the greater the change.