Table 7: Cross tabulation of APC system error rate vs Manual counting.
| Boarding Alighting Passengers |
Number of In Observations |
% of Time In_APC Provided no Count Errors |
% of Time In_APC Count Errors was Within
±
1 Passenger
|
Number of Out Observations |
% of Time Out_APC Provided no Count Errors |
% of Time Out_APC Count Errors was Within
±
1 passenger
|
| 0 |
456 |
97.81% |
99.78% |
406 |
96.55% |
98.77% |
| 1 |
146 |
79.45% |
99.32% |
170 |
71.18% |
97.65% |
| 2 |
97 |
63.92% |
94.85% |
108 |
64.81% |
95.37% |
| 3 |
92 |
55.43% |
89.13% |
88 |
65.91% |
95.45% |
| 4 |
38 |
34.21% |
86.84% |
72 |
52.78% |
100.00% |
| 5 |
29 |
24.14% |
86.21% |
45 |
28.89% |
91.11% |
| 6 |
38 |
42.11% |
78.95% |
19 |
47.37% |
100.00% |
| 7 |
11 |
45.45% |
90.91% |
15 |
60.00% |
80.00% |
| 8 |
17 |
29.41% |
82.35% |
9 |
33.33% |
100.00% |
| 9 |
7 |
42.86% |
100.00% |
4 |
25.00% |
75.00% |
| 10 |
6 |
16.67% |
66.67% |
3 |
66.67% |
100.00% |
| 11 |
1 |
0.00% |
0.00% |
2 |
100.00% |
100.00% |
| 12 |
6 |
16.67% |
50.00% |
1 |
0.00% |
0.00% |