condition mean min max ZT0-3 109.669976 109.669976 109.669976 ZT4-7 131.7998785 131.7998785 131.7998785 ZT8-11 145.020376 145.020376 145.020376 ZT12-15 143.1842365 143.1842365 143.1842365 ZT16-19 193.65554150000003 193.65554150000003 193.65554150000003 ZT20-23 183.5677195 183.5677195 183.5677195