|  |  | Zañudo [26] | Our method | ||
---|---|---|---|---|---|---|
Ref. | n | 〈k〉 | mean | stdev. | mean | stdev. |
[13] | 62 | 1.62 | 1.678 | 0.729 | 0.231 | 0.010 |
[14] | 94 | 1.65 | 1.300 | 0.074 | 0.234 | 0.012 |
[15] | 302 | 1.71 | 4.698 | 0.116 | 0.236 | 0.011 |
[16] | 60 | 2.10 | 4636.245 | 89.311 | 0.239 | 0.013 |
[17] | 120 | 2.45 | 2023.954 | 18448.754 | 0.312 | 0.141 |
[18] | 54 | 2.59 | 6878.594 | 22059.317 | 0.256 | 0.030 |
[19] | 54 | 3.62 | 3.789 | 3.903 | 0.492 | 0.247 |
[20] | 76 | 4.01 | DF | DF | 0.242 | 0.013 |
[21] | 130 | 5.00 | DF | DF | 23.19 | 98.42 |
[22] | 225 | 5.16 | DF | DF | 4186* | 12284 |