Value | Category |
---|---|
01 | Less than 6 months (or 600 hours) |
02 | 6 months (or 600 hours) to less than 1 year |
03 | From 1 year to less than 2 years |
04 | From 2 years to less than 3 years |
05 | 3 years or more |
95 | No response |
98 | Do not know |
99 | NIU (not in universe) |