Table 4.
Mean and standard deviation of volumes calculated using 50 subsets of ‘n’ data from each dataset
| Deposit (volume) | Number of points | Median volume (km3) | Standard deviation (km3) | Volume error (%) |
|---|---|---|---|---|
| Fogo member A (1.0 km3) | 20 | 1.73 | 1.00 | 58 |
| 40 | 1.43 | 0.73 | 51 | |
| 60 | 1.53 | 0.58 | 37 | |
| 80 | 1.55 | 0.77 | 45 | |
| 100 | 1.28 | 0.54 | 42 | |
| Cerro Negro 1995 (0.0045 km3) | 20 | 0.014 | 0.0072 | 51 |
| 40 | 0.010 | 0.0049 | 49 | |
| 60 | 0.018 | 0.0089 | 49 | |
| Askja Layer D (0.19 km3) | 20 | 0.22 | 0.28 | 127 |
| 40 | 0.19 | 0.29 | 152 | |
| 60 | 0.15 | 0.09 | 60 | |
| 80 | 0.29 | 0.11 | 57 | |
| Taupo Plinian Pumice (6.7 km3) | 20 | 14.60 | 16.50 | 113 |
| 40 | 10.69 | 3.82 | 36 | |
| 60 | 12.00 | 3.44 | 28 | |
| 80 | 11.07 | 2.26 | 20 | |
| 100 | 11.83 | 3.29 | 27 |
Volume error was calculated as a percentage of one standard deviation of the median volume. Volume determined using spline interpolation of complete dataset in parentheses