As found in the above example, we can find the mantissa for the mantissa for the sequences of digital 4048. Since there are four significant digits in 2546. in the same row where we have found 4048, under column 6 in the mean difference column, we find the number 10m the mantissa of the logarithm of 2546 will be 4048 + 10 = 4058.
log 2.546r= 0.4058
log 0.2546= `overline1.4058`
log25460= 4.4058