condition mean min max ZT0-3 1080.33475 1079.025 1081.6445 ZT4-7 849.807 849.807 849.807 ZT8-11 649.6465000000001 649.6465000000001 649.6465000000001 ZT12-15 0 0 0 ZT16-19 1383.375 1383.375 1383.375 ZT20-23 2285.735 2285.735 2285.735