condition mean min max ZT0-3 707.8 707.8 707.8 ZT4-7 769.8 769.8 769.8 ZT8-11 819.5999999999999 819.5999999999999 819.5999999999999 ZT12-15 809.8499999999999 809.8499999999999 809.8499999999999 ZT16-19 831.5 831.5 831.5 ZT20-23 898.5 898.5 898.5