condition mean min max ZT0-3 56.195100000000004 51.5612 59.414950000000005 ZT4-7 56.18535 56.18535 56.18535 ZT8-11 74.46235 74.46235 74.46235 ZT12-15 95.61307500000001 91.11715000000001 100.10900000000001 ZT16-19 96.83205000000001 96.83205000000001 96.83205000000001 ZT20-23 84.87219999999999 84.87219999999999 84.87219999999999