condition mean min max ZT0-3 1.2159905 1.2159905 1.2159905 ZT4-7 0.7220935 0.7220935 0.7220935 ZT8-11 0.587253 0.587253 0.587253 ZT12-15 0.793337 0.793337 0.793337 ZT16-19 1.4283000000000001 1.4283000000000001 1.4283000000000001 ZT20-23 0.9791125 0.9791125 0.9791125