All Tables

Table 1: OH/IR star sample and 1612 MHz OH maser properties.
Table 2: Lower lifetime limits $T_{\rm {min}}$ at different significance levels for 1612 MHz OH masers based on observations in this paper. P_n^m is the probability for finding exactly m extinguished maser among n stars reobserved after $\Delta t$ years.
Table 3: Upper lifetime limits $T_{\rm {max}}$ at different significance levels for 1612 MHz OH masers, based on observations of the Arecibo sample. Q_n^m is the probability for finding at least m extinguished masers among n stars reobserved after $\Delta t$ years.