condition mean min max ZT0-3 103.8536 97.46340000000001 110.2438 ZT4-7 135.59300000000002 135.59300000000002 135.59300000000002 ZT8-11 146.8335 146.8335 146.8335 ZT12-15 0 0 0 ZT16-19 155.926 155.926 155.926 ZT20-23 126.798 126.798 126.798