condition mean min max ZT0-3 16.77101 16.77101 16.77101 ZT4-7 184.400614 184.400614 184.400614 ZT8-11 256.25795400000004 256.25795400000004 256.25795400000004 ZT12-15 148.5700395 148.5700395 148.5700395 ZT16-19 58.2594995 58.2594995 58.2594995 ZT20-23 14.489709999999999 14.489709999999999 14.489709999999999