condition mean min max ZT0-3 101.149464 101.149464 101.149464 ZT4-7 50.805940500000005 50.805940500000005 50.805940500000005 ZT8-11 60.710691999999995 60.710691999999995 60.710691999999995 ZT12-15 59.358560499999996 59.358560499999996 59.358560499999996 ZT16-19 100.7106255 100.7106255 100.7106255 ZT20-23 82.28947500000001 82.28947500000001 82.28947500000001