condition mean min max ZT0-3 1256.4 1256.4 1256.4 ZT4-7 855.2 855.2 855.2 ZT8-11 954.8499999999999 954.8499999999999 954.8499999999999 ZT12-15 824.4000000000001 824.4000000000001 824.4000000000001 ZT16-19 1195.05 1195.05 1195.05 ZT20-23 1208.05 1208.05 1208.05