condition mean min max ZT0-3 43.249224999999996 42.76865 43.7298 ZT4-7 36.0835 36.0835 36.0835 ZT8-11 39.728049999999996 39.728049999999996 39.728049999999996 ZT12-15 0 0 0 ZT16-19 49.56605 49.56605 49.56605 ZT20-23 50.4312 50.4312 50.4312