condition mean min max ZT0-3 34.7538 34.7538 34.7538 ZT4-7 24.12355 24.12355 24.12355 ZT8-11 30.271349999999998 30.271349999999998 30.271349999999998 ZT12-15 45.9286 45.9286 45.9286 ZT16-19 52.759249999999994 52.759249999999994 52.759249999999994 ZT20-23 44.95355 44.95355 44.95355