condition mean min max ZT0-3 58.418762 58.418762 58.418762 ZT4-7 80.136492 80.136492 80.136492 ZT8-11 91.5417405 91.5417405 91.5417405 ZT12-15 53.505117 53.505117 53.505117 ZT16-19 81.161281 81.161281 81.161281 ZT20-23 61.86124100000001 61.86124100000001 61.86124100000001