| N | Min | Max | Mean | Standard deviation |
CRI < 20% | 93 | 0.00001 | 0.23355 | 0.01421 | 0.03946 |
20% ≤ CRI < 50% | 583 | 0.00000 | 0.61611 | 0.00961 | 0.04339 |
50% ≤ CRI ≤ 100% | 123 | 0.00000 | 0.04098 | 0.00090 | 0.00404 |