condition mean min max ZT0-3 0.059200366666666664 0.0429334 0.091658 ZT4-7 0.0 0.0 0.0 ZT8-11 0.503106 0.503106 0.503106 ZT12-15 0.7122364999999999 0.695311 0.729162 ZT16-19 0.2422135 0.2422135 0.2422135 ZT20-23 0.093138 0.093138 0.093138