condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.023416000000000003 0.023416000000000003 0.023416000000000003 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.060654000000000007 0.060654000000000007 0.060654000000000007