condition mean min max ZT0-3 161.696520055 85.06028716 238.33275295 ZT4-7 1186.612651375 856.1142842499999 1517.1110185000002 ZT8-11 3337.0097960000003 2942.9371175 3731.0824745 ZT12-15 3891.005795 3393.581991 4388.429599 ZT16-19 1974.621591 1552.586068 2396.657114 ZT20-23 904.7182413500001 700.4770057000001 1108.959477