condition mean min max ZT0-3 656.9849999999999 606.371 707.5989999999999 ZT4-7 307.5185 307.5185 307.5185 ZT8-11 1335.05 1335.05 1335.05 ZT12-15 0 0 0 ZT16-19 1047.695 1047.695 1047.695 ZT20-23 1041.4225000000001 1041.4225000000001 1041.4225000000001