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Table 5 Correlation matrix of the water depth (cm), water temperature (°C), dissolved oxygen (mg/L), and CH4 (mmol/L) in the sampling site at Lake Suwa; (a) early summer season (June in 2018 & 2019, n = 12) and (b) autumn season (September to October in 2018 and 2019, n = 13)

From: Detection of planktonic coenzyme factor 430 in a freshwater lake: small-scale analysis for probing archaeal methanogenesis

 

Depth

Temp.

DO

CH4

(a) June in 2018 and 2019 (n = 12)

Depth

1

 − 0.042

 − 0.475

0.657

Temp

 − 0.042

1

0.844

0.059

DO

 − 0.475

0.844

1

 − 0.379

CH4

0.657

0.059

 − 0.379

1

(b) September to October in 2018 and 2019 (n = 13)

Depth

1

 − 0.954

 − 0.920

0.665

Temp

 − 0.954

1

0.945

 − 0.673

DO

 − 0.920

0.945

1

 − 0.450

CH4

0.665

 − 0.673

 − 0.450

1

  1. Principal component statistics and raw data profiles are shown in the Fig. 3b and Table 6, respectively