The school board is trying to evaluate a new math program introduced to second-graders in five elementary schools across the county this year. A sample of the student scores on standardized math tests in each elementary school yielded the following data:

School	No. of Test Errors
A	75
B	38
C	42
D	47
E	61

For the test errors, the c-chart with control limits that contain 99.73% of the random variation in test scores is: UCLc = ______ errors (round your response to two decimal places).