condition mean min max ZT0-3 0.1387965 0.0 0.277593 ZT4-7 0.0 0.0 0.0 ZT8-11 67.35705 67.35705 67.35705 ZT12-15 0 0 0 ZT16-19 25.44925 25.44925 25.44925 ZT20-23 0.8259019999999999 0.8259019999999999 0.8259019999999999