Level value

First difference

Variables

Constant

Break

Point

Constant

& trend

Break point

Constant

Break point

Constant

& trend

Break point

I (d)

lnCVC

−8.896 (0)^a

3/19/20

−9.190 (2)^a

3/27/20

−

−

−

−

I (0)

lnOPR

−3.178 (1)

3/07/20

−5.172 (0)^a

3/07/20

−15.096 (0)^a

3/18/20

−16.084 (0)^a

3/18/20

I (1)

lnFPR

−2.101 (1)

3/30/20

−6.428 (0)^a

3/02/20

−4.122 (0)

3/01/20

−5.869 (0)^a

3/01/20

I (0)