condition mean min max ZT0-3 176.815071 176.815071 176.815071 ZT4-7 141.34364699999998 141.34364699999998 141.34364699999998 ZT8-11 141.9956775 141.9956775 141.9956775 ZT12-15 204.0039135 204.0039135 204.0039135 ZT16-19 200.82482 200.82482 200.82482 ZT20-23 245.4957625 245.4957625 245.4957625