condition mean min max ZT0-3 0.6131885 0.6131885 0.6131885 ZT4-7 0.0975235 0.0975235 0.0975235 ZT8-11 0.0790135 0.0790135 0.0790135 ZT12-15 7.79462 7.79462 7.79462 ZT16-19 27.79455 27.79455 27.79455 ZT20-23 3.7432499999999997 3.7432499999999997 3.7432499999999997