Use the accompanying radiation levels kg for 50 different cell phones. Find the percentile P40. 0.26 0.26 0.29 0.51 0.59 0.61 0.64 0.64 0.73 0.88 0.89 0.89 0.91 0.92 0.93 0.95 0.96 0.96 1.05 1.06 1.09 1.13 1.13 1.13 1.13 1.14 1.14 1.15 1.15 1.15 1.16 1.18 1.27 1.28 1.30 1.30 1.30 1.30 1.31 1.33 1.34 1.38 1.41 1.42 1.43 1.45 1.45 1.48 1.52 1.54 P40 = kg W (Type an integer or decimal rounded to two decimal places as needed.)