condition mean min max ZT0-3 72.8167 72.8167 72.8167 ZT4-7 63.64905 63.64905 63.64905 ZT8-11 70.8127 70.8127 70.8127 ZT12-15 73.08025 73.08025 73.08025 ZT16-19 82.53540000000001 82.53540000000001 82.53540000000001 ZT20-23 75.8841 75.8841 75.8841