Group

n

0 w

2 w

4 w

6 w

HFZS

35

198.22 ± 23.18

249.53 ± 37.72△△▲▲

347.28 ± 60.92△△▲▲

435.30 ± 87.25△△▲▲

HF

32

203.92 ± 19.86

219.76 ± 38.15

246.41 ± 49.31

306.66 ± 47.77

ZS

31

199.21 ± 23.07

223.71 ± 44.23

249.84 ± 56.87

307.59 ± 49.45