condition mean min max ZT0-3 743.078211 743.078211 743.078211 ZT4-7 1044.063969 1044.063969 1044.063969 ZT8-11 953.996048 953.996048 953.996048 ZT12-15 1048.1831320000001 1048.1831320000001 1048.1831320000001 ZT16-19 773.571146 773.571146 773.571146 ZT20-23 759.645687 759.645687 759.645687