condition mean min max ZT0-3 2537.435102 2537.435102 2537.435102 ZT4-7 1505.7320565 1505.7320565 1505.7320565 ZT8-11 1278.0222155000001 1278.0222155000001 1278.0222155000001 ZT12-15 1590.262359 1590.262359 1590.262359 ZT16-19 1465.3064595 1465.3064595 1465.3064595 ZT20-23 1339.4342265 1339.4342265 1339.4342265