condition mean min max ZT0-3 0.144719 0.0 0.289438 ZT4-7 0.8138050000000001 0.8138050000000001 0.8138050000000001 ZT8-11 0.7373095000000001 0.7373095000000001 0.7373095000000001 ZT12-15 0 0 0 ZT16-19 0.2886345 0.2886345 0.2886345 ZT20-23 0.7251155 0.7251155 0.7251155