condition mean min max ZT0-3 2408.649379 2408.649379 2408.649379 ZT4-7 1172.437853 1172.437853 1172.437853 ZT8-11 393.601449 393.601449 393.601449 ZT12-15 495.3968405 495.3968405 495.3968405 ZT16-19 161.9187085 161.9187085 161.9187085 ZT20-23 48.412904499999996 48.412904499999996 48.412904499999996