condition mean min max ZT0-3 52.063916666666664 43.367 59.529349999999994 ZT4-7 50.944199999999995 50.944199999999995 50.944199999999995 ZT8-11 89.4357 89.4357 89.4357 ZT12-15 92.48022499999999 84.35895 100.6015 ZT16-19 91.94390000000001 91.94390000000001 91.94390000000001 ZT20-23 70.12555 70.12555 70.12555