The following observations of actual time taken by worker for doing a job repeatedly was taken by a time study observer are: Observation No. Times in Minutes Skill Effort Condition 1 The ratings were found to be as follows: Consistency 0.2 2 0.3 Good Excessive Excellent Poor 3 0.4 4 0.6 C1 A1 B F 5 0.4 6 Determine the normal time or basic time for the element under observation. 0.2 Skill Super A = +0.15 A = +0.13 Excellent B = +0.11 B=+0.08 Good C = +0.06 C = +0.03 Average D = 0.00 Fair E= 0.04 E=-0.10 Poor F1=-0.16 F2=-0.22 Westing house system of Performance Rating Table Effort Excessive A+0.13 A = +0.12 Excellent B +0.10 B = +0.08 Good C = + 0.05 C = +0.02 Average D = 0.00 Fair E -0.04 E=-0.08 Poor F1=-0.12 F2= -0.17 Conditions Ideal A = +0.06 Excellent B=+0.04 Good C = +0.02 Average D = 0.00 Fair E=-0.03 Poor F1=-0.07 Consistency Perfect A= +0.04 Excellent B=+0.03 Good C= +0.01 Average D = 0.00 Fair E=-0.02 Poor F=-0.04