condition mean min max ZT0-3 94.19885 86.2354 102.1623 ZT4-7 96.02295000000001 96.02295000000001 96.02295000000001 ZT8-11 65.9274 65.9274 65.9274 ZT12-15 0 0 0 ZT16-19 70.4108 70.4108 70.4108 ZT20-23 78.20535 78.20535 78.20535