... from 11 to 20. Therefore, for block 1 11 n = 14 and for block 12 –20 n = 13 , 11 , 11 , 10 , 9, 8, 6, 3 and 1 respectively. For each box plot, the whiskers represent maximum and minimum values, the ... the top and bottom of the box represent the 75th and 25th quartiles and the horizontal line in the box represent the median.05 10 15 20253035404550 12 345678 910 111 213 1 415 1 617 1 819 20Time ... of the authors and mr Larson, the engineer.Authors' contributionsUR participated in the design of the study, carried out the data acquisition, and the statistical analyses and draftedthe...