Table 7 Changes in numerical values across different pandemic periods.

From: Challenges and opportunities of hydrogen energy application in public transportation in the post-epidemic period

Period

x

y

z

\(\Delta C\)

\(\Delta {\rm{P}}\)

\(\Delta {L}_{1}\)

\(\Delta {\rm{M}}\)

\({Re}\)

\({Fe}\)

\({De}\)

Before

0.6

0.5

0.3

4

4.5

2

5

1

0.5

0.5

During

0.4

0.3

0.4

5

4.5

4

5

2

1

1

Post-epidemic era

0.7

0.6

0.6

3.5

5

1.5

5.5

3

0.8

0.8

Back to article page