condition mean min max ZT0-3 110.206361 110.206361 110.206361 ZT4-7 154.03357499999998 154.03357499999998 154.03357499999998 ZT8-11 175.5580595 175.5580595 175.5580595 ZT12-15 147.8792245 147.8792245 147.8792245 ZT16-19 134.602404 134.602404 134.602404 ZT20-23 131.7995155 131.7995155 131.7995155