时间(天)

L

a

b

ΔE

0

−5.5476

−0.4886

−1.1333

0

1

17.1420

−12.2899

−3.7494

25.7086

2

17.7753

−9.0338

−2.3042

24.8667

3

16.8290

−10.8126

−3.8874

24.7968

4

17.3074

−9.6645

−2.5965

24.6717

5

14.3269

−13.0119

−4.4162

23.7193

6

13.0202

−10.2790

−4.7414

21.2986

7

15.9407

−6.1729

−1.0552

22.2276

8

15.6105

−5.5313

−1.0352

21.7510

9

12.2112

−11.5988

−5.1083

21.3217

10

13.0202

−10.2790

−4.7414

21.2986