The Use of Project Time Management Processes and the Schedule Performance of Construction Projects in Mexico

Table 6

Mean SPI values obtained for different periods of time.

Projects	Performance at project completion	Mean SPI values
		4th week	8th week	12th week	Last week
1	Delayed	0.33	0.50	0.61	0.65
2	On time	1.00	1.00	1.00	1.00
3	Delayed	0.88	0.92	0.94	0.93
4	Delayed	0.20	0.41	0.59	0.65
5	Delayed	0.85	0.94	0.96	0.92
6	On time	1.00	1.00	1.00	1.00
7	On time	1.00	0.90	0.93	0.94
8	On time	1.00	1.00	0.98	0.99
9	Delayed	0.68	0.78	0.86	0.88
10	Delayed	0.36	0.80	0.91	0.87
11	On time	1.00	1.00	1.00	1.00
12	Delayed	0.28	0.37	0.53	0.62
13	On time	0.67	0.58	0.62	0.68
14	On time	0.59	0.69	0.76	0.79

Projects that were granted an extension of time.