condition mean min max ZT0-3 0.5605558333333334 0.4268385 0.7577985 ZT4-7 0.41051499999999996 0.41051499999999996 0.41051499999999996 ZT8-11 0.36865749999999997 0.36865749999999997 0.36865749999999997 ZT12-15 0.589717 0.564391 0.615043 ZT16-19 0.67923 0.67923 0.67923 ZT20-23 0.6926145 0.6926145 0.6926145