condition mean min max ZT0-3 93.907595 93.907595 93.907595 ZT4-7 111.732091 111.732091 111.732091 ZT8-11 88.962904 88.962904 88.962904 ZT12-15 92.6145705 92.6145705 92.6145705 ZT16-19 114.57431199999999 114.57431199999999 114.57431199999999 ZT20-23 79.59666250000001 79.59666250000001 79.59666250000001