Table 4. Significance differences in the vitamin K contents of conger eel depending on harvest season

Vitamin K contents (μg/100 g)	Size1)	Harvest period2)
		11 months (Jan-Nov)	t-value4)	12 months (Jan-Dec)	t-value
Phylloquinone	Large	0.44±0.03	5.293***	0.46±0.15	0.715
	Small	0.27±0.02		0.41±0.49
Menaquinone	Large	0.57±0.03	6.068***	0.57±0.11	6.322***
	Small	0.35±0.01		0.36±0.16
Total vitamin K3)	Large	1.01±0.05	6.583***	1.03±0.20	2.784**
	Small	0.63±0.03		0.77±0.57

Large conger eel: 80±5 cm, small conger eel: 50±5 cm.
The significance of vitamin K contents in conger eel was analyzed in two ways, excluding (11 months from Jan to Nov) and including (12 months from Jan to Dec) samples with a particularly high content observed in December.
Total vitamin K = Phylloquinone + Menaquinone.
^*p<0.05, ^**p<0.01, ^***p<0.001 by t-test.