condition mean min max ZT0-3 537.1972499999999 501.974 572.4205 ZT4-7 580.5905 580.5905 580.5905 ZT8-11 651.7090000000001 651.7090000000001 651.7090000000001 ZT12-15 0 0 0 ZT16-19 823.4639999999999 823.4639999999999 823.4639999999999 ZT20-23 801.261 801.261 801.261