Table 1. Accuracy of the cell counting (N) and the calculation of the biomass (A) depending on coloration of the cells.

	A		N
Declension	max = min	max = 1	max = min	max = 1
0	0.995	1.002	1.731	1.023
0.25	0.982	0.993	0.948	0.976
0.50	1.004	0.972	0.961	0.978
0.75	1.001	0.892	0.972	0.984
1.00	0.717	/	0.979	/

The value of 1 indicates 100% accuracy.