Datum, i

235U mass, m, grams

Net counting rate, s, cps

1

1

28.533 ± 2.03

2

4

116.108 ± 2.42

3

7

180.715 ± 2.75

4

10

275.540 ± 3.33

5

15

386.488 ± 4.16

6

20

534.640 ± 5.59