condition mean min max ZT0-3 785.231575 785.231575 785.231575 ZT4-7 592.9192175000001 592.9192175000001 592.9192175000001 ZT8-11 606.9949705 606.9949705 606.9949705 ZT12-15 706.8388594999999 706.8388594999999 706.8388594999999 ZT16-19 644.482057 644.482057 644.482057 ZT20-23 699.2733745 699.2733745 699.2733745