Pivotal age (Days) (x) Number of surviving to the beginning of age interval Number of dying during ‘x’ Mortality rate per hundred alive at beginning of age interval
Alive between age ‘x’ and 'x+1'
No. of the individual’s life days beyond ‘x’ Expectation of further life
  (lx) (dx) (100 qx) (Lx) (Tx) (ex)
0-5 100 4 4.00 100.5 753.00 15.06
5-10 96 2 2.08 96.5 652.50 13.59
10-15 94 0 0.00 94.5 556.00 11.83
15-20 92 2 2.17 92.5 461.50 10.03
20-25 92 4 4.35 92.5 369.00 8.02
25-30 88 6 6.82 88.5 276.50 6.28
30-35 88 24 27.27 88.5 188.00 4.27
35-40 58 28 48.28 58.5 99.50 3.43
40-45 30 20 66.67 30.5 41.00 2.73
45-50 10 0 0.00 10.5 10.50 2.10
Table 5: Life table for computing life expectancy of Spodopteralitura on tobacco cv. Anand-119.