[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 097 — TABLE I. DIURNAL VARIATION IN NUMBERS OF EUGLENA (NO./ML.)

PDF page: 397

```csv
Depth in m.,Time =.c 8 a.m.,Time =.I2 noon,Time =.4 p.m.,Time =.8 p.m.,Time =.I2 midnight,Time =.4a.m.
O-I,25,Lost,10,25,50,25
I-2,5,5,fe),5,15,15
2-3,"24,500","26,000","21,500","16,000","13,000","6,250"
3-4,"10,500","12,000","7,000","10,000",75500,"7,500"
```

--- END ARTIFACT ---

Question:
The table gives Euglena counts at 2–3 m for 8 a.m. and noon, but not for 10 a.m. What is a reasonable estimate for 10 a.m.?

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