/*
  Title:  NASA space shuttle O-ring failures
  Source: Table 1, Dalal etal, JASA 1989, 84, 945-957, field joint data;
          Damage index from Tufte 1997.
*/
data orings;
	flt_num = _n_;
	input flight $ temp pressure fail failures damage;
	orings = 6;
	label temp='Temperature'  pressure='Leak check pressure'
		fail = 'Any failure?'  failures='Number of O-ring failures'
		damage = 'Damage index';
datalines;
  1   66    50   0   0   0
  2   70    50   1   1   4
  3   69    50   0   0   0
  4   80    50   .   .   .
  5   68    50   0   0   0
  6   67    50   0   0   0
  7   72    50   0   0   0
  8   73    50   0   0   0
  9   70   100   0   0   0
41B   57   100   1   1   4
41C   63   200   1   1   2
41D   70   200   1   1   4
41G   78   200   0   0   0
51A   67   200   0   0   0
51C   53   200   1   2  11
51D   67   200   0   0   0
51B   75   200   0   0   0
51G   70   200   0   0   0
51F   81   200   0   0   0
51I   76   200   0   0   0
51J   79   200   0   0   0
61A   75   200   1   2   4
61C   58   200   1   1   4
61I   76   200   0   0   4
;