Table 4.

First series gold-marker type iodine-125 seed measurements in the re-entrant ionization chamber. Data corrected to STP and reference time 1981 June 1.5.

Source number	Mean current for random seed position (pA)	Number of seed positions	Standard deviation of the mean (%)
1	18.50	6	1.0
2	18.91	5	0.3
3	18.76	5	1.2
4	19.52	4	1.9