请各位高人指教，这是我做RGui作业的时候，分析广州市消费结构模型时需要用ADF函数检验Inc和Cons序列的平稳性，下面是代码和检验结果，但是我不懂如何根据这些判断出是否平稳，请大神指教！

library(tseries)

adf.test(m.ts$inc)

AugmentedDickey-Fuller Test

data:  m.ts$inc

Dickey-Fuller= 1.1821, Lag order = 3, p-value = 0.99

alternativehypothesis: stationary

adf.test(diff(m.ts$inc))

AugmentedDickey-Fuller Test

data:  diff(m.ts$inc)

Dickey-Fuller= -0.88744, Lag order = 3, p-value = 0.9403

alternativehypothesis: stationary

adf.test(diff(m.ts$inc,differences= 2))

AugmentedDickey-Fuller Test

data:  diff(m.ts$inc, differences = 2)

Dickey-Fuller= -3.7041, Lag order = 3, p-value = 0.04017

alternativehypothesis: stationary

adf.test(m.ts$cons)

AugmentedDickey-Fuller Test

data:  m.ts$cons

Dickey-Fuller= 0.54251, Lag order = 3, p-value = 0.99

alternativehypothesis: stationary

adf.test(diff(m.ts$cons))

AugmentedDickey-Fuller Test

data:  diff(m.ts$cons)

Dickey-Fuller= -1.6411, Lag order = 3, p-value = 0.712

alternativehypothesis: stationary

adf.test(diff(m.ts$cons,differences= 2))

AugmentedDickey-Fuller Test

data:  diff(m.ts$cons, differences = 2)

Dickey-Fuller= -3.2153, Lag order = 3, p-value = 0.1031

alternativehypothesis: stationary