Table 2. Final scores of reference embryos.

Reference embryo body length (mm)	40	43	45	48	50	52	55	58
Average of final scores	0.80	1	2	2.6	7.2	10	12.5	17.8
SD	0.45	0	1.22	1.14	4.09	2.45	1.34	1.10

Note:

For each reference embryo body length, we observed five specimens. SD, standard deviation.