condition mean min max ZT0-3 63.3703 61.844699999999996 64.8959 ZT4-7 77.53604999999999 77.53604999999999 77.53604999999999 ZT8-11 90.0121 90.0121 90.0121 ZT12-15 0 0 0 ZT16-19 87.90885 87.90885 87.90885 ZT20-23 80.86349999999999 80.86349999999999 80.86349999999999