[SYSTEM]
You are answering a single information-extraction question. Use ONLY the supplied source material. Do not use prior knowledge. Give a clear, concrete answer with the specific number, name, year, or value asked for.

[USER]
--- SOURCE ARTIFACT (M3-L4) ---
# Table 034 — Table 16. Catch statistics by Year by Species Table . 710 taxon have been caught, identified, or observed over the years. A 'Y' indicates the presence of the Taxon, and an 'N' represents its absence . The last column is the number of taxa present for that year, and the last row shows the number of years a particular taxon was observed. Due to space limitations, not all taxon are presented here. Listed are the 19 most frequently found species.

PDF page: 51

```csv
empty_header,empty_header_1,N. ANCHOVYJ. MACKEREL,PAC.,empty_header_2,MACKERELPAC. SARDINEPAC. HAKEMARKET SQUID,empty_header_3,CAL.,empty_header_4,empty_header_5,empty_header_6,LIZARDFISHWHITE CROAKERQUEEN FISHUNIDEN. FISHUNIDEN. ROCKFISH,CAL._1,empty_header_7,BARRACUDAPAC. SAURYUNIDEN. PIPEFISH,PAC._1,POMPANOPELAGIC RED CRAB,empty_header_8,PAC. BONITOUNIDEN. PORPOISEBLUE SHARK# UNIQUE SPECIES,empty_header_9,empty_header_10,empty_header_11
1950,Y,Y,Y,Y,Y,N,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,N,Y,N,161,161
1951,Y,Y,Y,Y,N,N,Y,Y,Y,Y,Y,Y,Y,Y,Y,N,N,N,N,77,77
1952,Y,Y,Y,Y,N,N,Y,Y,Y,Y,Y,Y,Y,Y,N,Y,Y Y,,Y,168,168
1953,Y,Y,Y,Y,Y,N,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y Y,,Y,93,93
1954,Y,Y,Y,Y,N,N,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y Y,,Y,126,126
1955,Y,Y,Y,Y,Y,N,Y,Y,Y,Y,Y,Y,Y,N,Y,Y,Y N,,Y,88,88
1956,Y,Y,Y,Y,N,N,Y,Y,Y,Y,Y,Y,Y,N,Y,N,N N,,Y,104,104
1957,Y,Y,Y,Y,N,N,N,Y,Y,Y,Y,N,Y,Y,N,Y,Y,N,N,46,46
1958,Y,Y,Y,Y,N,N,Y,Y,N,Y,Y,Y,Y,Y,Y,N,Y,Y,Y,70,70
1959,Y,Y,Y,Y,N,N,Y,Y,Y,Y,Y,Y,Y,Y,N,Y,Y Y,,N,132,132
1960,Y,Y,Y,Y,N,N,Y,Y,Y,Y,Y,Y,Y,Y,N,Y,Y Y,,Y,99,99
1961,Y,Y,Y,Y,N,N,Y,Y,Y,Y,N,,Y,Y,N,Y,Y Y,,N,139,139
1962,Y,Y,Y,Y,Y,N,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y Y,,N,160,160
1963,Y,Y,Y,Y,Y,N,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,N,142,142
1964,Y,Y,Y,Y,Y,N,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y Y,,Y,131,131
1965,Y,Y,Y,Y,Y,N,Y,Y,Y,Y,Y,N,Y,Y,Y,Y,Y,Y,N,149,149
1966,Y,Y,Y,Y,Y,Y,N,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,132,132
1967,Y,Y,Y,Y,Y,Y,Y,N,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,164,164
1968,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y Y,,Y,180,180
1969,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,189,189
1970,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y Y,,Y,245,245
1971,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y Y,,Y,229,229
1972,Y,Y,Y,Y,Y,Y,Y,Y,N,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,142,142
1973,Y,Y,Y,N,Y,Y,Y,Y,N,Y,Y,N,Y,Y,Y,Y,N Y,,Y,182,182
1974,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,N,Y Y,,Y,142,142
1975,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y Y,,Y,Y,Y,Y,Y,Y,Y,Y,216,216
1976,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,184,184
1977,Y,Y,Y,N,Y,Y,Y,N,Y,Y,Y,N,Y,Y,Y,Y,Y Y,,Y,118,118
1978,Y,Y,N,N,Y,Y,Y,Y,Y,Y,Y,Y,Y,N,Y,Y,Y,Y,Y,117,117
1979,Y,Y,,,Y,,Y,Y,Y,Y,Y,Y,N,Y,Y N,Y N,Y Y,Y,,,87
,Y,Y,Y,Y,Y,Y,Y,,Y,Y,Y,N,N,Y,,Y,Y,,Y,73,73
1980,Y,,Y,N,,Y,,Y,Y,N Y,Y,Y,N,,Y,Y,N,Y,Y,76,76
1981,,Y,Y,Y,Y,Y,Y,Y,,,,Y,,Y,Y,Y,Y,N,,Y,88
1982,Y,Y,Y,Y,Y,Y,Y,Y,Y,,Y,,N,Y,,,,,,,
```

--- END ARTIFACT ---

Question:
If the 1979 species count is missing, what value is implied by the 1978 and 1980 counts?

Answer concisely. Cite the row/cell/section you used. State your final numerical answer clearly.