condition mean min max ZT0-3 99.95170129499999 75.79168674 124.11171585 ZT4-7 115.044784 102.1195916 127.96997640000001 ZT8-11 100.95488807999999 94.81177301 107.09800315 ZT12-15 89.281926555 89.27933061 89.2845225 ZT16-19 104.2853166475 93.946120595 114.62451270000001 ZT20-23 83.5957490075 78.695905275 88.49559274