Uncensored/arbitrarily censored data
main topic

If you have any combination of exact failure times, right-, left- and interval-censored data, enter your data using a Start column and End column:

For this observation...	Enter in the Start column...	Enter in the End column...
Exact failure time	Failure time	Failure time
Right censored	time after which the failure occurred	* (missing value symbol)
Left censored	* (missing value symbol)	time before which the failure occurred
Interval censored	time at start of interval during which the failure occurred	time at the end of interval during which the failure occurred

This example uses a frequency column as well.

Start End Frequency

20 units are left censored at 10000 hours.

2 units are exact failures at 30000 hours.

50 units are interval censored between 50000 and 60000 hours.

190 units are right censored at 90000 hours.