condition mean min max ZT0-3 42.3843 32.39155 60.69335 ZT4-7 64.1442 64.1442 64.1442 ZT8-11 134.4675 134.4675 134.4675 ZT12-15 112.0369 69.9058 154.168 ZT16-19 46.96835 46.96835 46.96835 ZT20-23 49.5193 49.5193 49.5193