| Start of eruptive episode | Duration (days) |
Length (in meters) |
Width (in meters) |
Height (in meters) |
| October 18, 1980 | 1 | 290 | 260 | 39 |
| December 27, 1980 | 7 | 440 | 320 | 93 |
| February 5, 1981 | 3 | 520 | 464 | 120 |
| April 10, 1981 | 3 | 666 | 470 | 129 |
| June 18, 1981 | 2 | 674 | 520 | 161 |
| September 6, 1981 | 5 | 680 | 590 | 161 |
| October 30, 1981 | 4 | 680 | 600 | 184 |
| March 19, 1982 | 24 | 760 | 600 | 195.1 |
| May 14, 1982 | 5 | 800 | 636 | 198 |
| August 18, 1982 | 6 | 820 | 692 | 204.1 |
| February 7, 1983 | 368 | 860 | 780 | 227.3 |
| March 29, 1984 | 5 | 860 | 790 | 227.1 |
| September 10, 1984 | 3 | 960 | 800 | 225.6 |
| May 24, 1985 | 17 | 1,000 | 800 | 222.9 |
| May 8, 1986 | 5 | 1,040 | 800 | 225.9 |
| October 21, 1986 | 4 | 1,060
[3,478 feet] |
860
[2,822 feet] |
267.2
[876.6 feet] |
| Dimensions taken at end of each extrusive episode, including talus. Height is above base of October 1980 lobe (at assumed elevation of 1,914 meters). All measurements from topographic maps. | ||||
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