condition mean min max ZT0-3 0.53678175 0.255611 0.8179525 ZT4-7 1.253044 1.253044 1.253044 ZT8-11 3.17761 3.17761 3.17761 ZT12-15 0 0 0 ZT16-19 1.7902049999999998 1.7902049999999998 1.7902049999999998 ZT20-23 1.483315 1.483315 1.483315