TABLE 4.

Total and culturable cell densities in formation waters of no. 3 storage tank

Time of collection	Total cell density (cells/ml)		Culturable cell density (cells/ml)
	Cocci	Rods	Hyperthermophilic cocci	Hyperthermophilic rods	Thermophiles	Mesophiles
June 1996	8.0 × 104	2.5 × 106	9.2 × 103	NDa	3.5 × 104	1.1 × 104
November 1996	2.0 × 105	1.5 × 106	2.4 × 104	9.3 × 100	1.1 × 105	2.1 × 104
March 1997	1.1 × 105	6.5 × 105	4.6 × 104	ND	2.4 × 104	4.0 × 104
September 1997	9.0 × 104	1.7 × 106	9.2 × 103	0.4 × 100	4.6 × 104	2.4 × 104
Avg	1.2 × 105	3.1 × 106	2.2 × 104	2.4 × 100	5.4 × 104	2.4 × 104

^aND, not detected (<0.4 × 10⁰ cells/ml).