condition mean min max ZT0-3 92.705178 92.705178 92.705178 ZT4-7 87.99209049999999 87.99209049999999 87.99209049999999 ZT8-11 84.8274275 84.8274275 84.8274275 ZT12-15 109.7185325 109.7185325 109.7185325 ZT16-19 131.69324849999998 131.69324849999998 131.69324849999998 ZT20-23 102.0720745 102.0720745 102.0720745