Czas (lata)	"Względna ilość 
izotopu 14C"
0	100,00%
1	99,99%
2	99,98%
5	99,94%
10	99,88%
20	99,76%
50	99,40%
100	98,80%
200	97,61%
500	94,14%
1000	88,62%
2000	78,54%
5000	54,67%
10000	29,89%
20000	8,94%
50000	0,24%