condition mean min max ZT0-3 123.38037500000002 70.48025 176.28050000000002 ZT4-7 64.4265 64.4265 64.4265 ZT8-11 150.5885 150.5885 150.5885 ZT12-15 0 0 0 ZT16-19 197.3555 197.3555 197.3555 ZT20-23 108.81065 108.81065 108.81065