condition mean min max ZT0-3 1.2784574775000002 0.7932415890000001 1.7636733660000001 ZT4-7 0.39015667975 0.060536867 0.7197764925 ZT8-11 0.3014361405 0.022349043500000002 0.5805232375 ZT12-15 54.720845383 47.446909241 61.994781525 ZT16-19 25.409897068 20.624191186 30.19560295 ZT20-23 8.71326654575 6.2622675735 11.164265518