condition mean min max ZT0-3 3450.8 3450.8 3450.8 ZT4-7 3079.9 3079.9 3079.9 ZT8-11 2826.8500000000004 2826.8500000000004 2826.8500000000004 ZT12-15 2946.4 2946.4 2946.4 ZT16-19 3081.6499999999996 3081.6499999999996 3081.6499999999996 ZT20-23 3298.6000000000004 3298.6000000000004 3298.6000000000004