condition mean min max ZT0-3 1458.41427 1458.41427 1458.41427 ZT4-7 1026.9763595 1026.9763595 1026.9763595 ZT8-11 1101.911196 1101.911196 1101.911196 ZT12-15 1309.1742215 1309.1742215 1309.1742215 ZT16-19 1839.8481124999998 1839.8481124999998 1839.8481124999998 ZT20-23 1832.6942585000002 1832.6942585000002 1832.6942585000002