condition mean min max ZT0-3 0.0363247945 0.0 0.072649589 ZT4-7 0.12571428725 0.1187973775 0.132631197 ZT8-11 0.18905821100000003 0.087229582 0.29088684000000004 ZT12-15 0.22644879325 0.22616899549999997 0.22672859100000003 ZT16-19 0.34619930600000004 0.335466158 0.356932454 ZT20-23 0.4608653225 0.3579892535 0.5637413915