How much longer will they tolerate

4 mins 25 secs

6 mins 7 secs

6 mins 15 secs

18 mins 58 secs

6 mins 7 secs

7 mins

11 mins 40 secs

5 mins 45 secs

7 mins

7 mins

12 mins 32 secs

7 mins

9 mins 45 secs

9 mins 58 secs

9 mins 54 secs

9 mins 54 secs

9 mins 51 secs

9 mins 51 secs

9 mins 54 secs

9 mins 54 secs

9 mins 54 secs

9 mins 58 secs

10 mins 35 secs

10 mins

49 mins 45 secs

9 mins 51 secs

9 mins 52 secs

9 mins 54 secs

9 mins 58 secs

9 mins 58 secs

10 mins

10 mins

9 mins 52 secs

9 mins 54 secs

9 mins 15 secs

10 mins 1 sec

5 mins 57 secs

1 min 59 secs

10 mins 3 secs

1 hour 44 secs