Distance to failure for 38 vehicle shock absorbers.
shockA tibble with 38 rows and 3 variables:
Observed distance.
One of two failure modes (mode_1 and mode_2)
or censored if no failure occurred.
If failure_mode is either mode_1 or mode_2
this is 1 else 0.
Meeker, William Q; Escobar, Luis A., Statistical Methods for Reliability Data, New York: Wiley series in probability and statistics (1998, p.630)