condition mean min max ZT0-3 192.35 192.35 192.35 ZT4-7 166.4 166.4 166.4 ZT8-11 169.10000000000002 169.10000000000002 169.10000000000002 ZT12-15 155.3 155.3 155.3 ZT16-19 192.45 192.45 192.45 ZT20-23 191.8 191.8 191.8