',alpha = 0.5,lwd = 0.5,color = 'black')+
geom_hline(aes(yintercept = 0),linetype = 'dashed',alpha =...0.5,lwd = 0.5,color
= 'black')+ geom_hline(aes(yintercept = -50),linetype = 'dashed',alpha =
0.5,lwd...= 0.5,color = 'black')+ geom_vline(aes(xintercept = 0),linetype =
'dashed',alpha = 0.5,lwd = 0.5,color...= 'black')+ geom_vline(aes(xintercept =
-100),linetype = 'dashed',alpha = 0.5,lwd = 0.5,color = 'black...,linetype='dashed',alpha=0.5,lwd=0.5,color='black')+geom_vline(aes(xintercept=100),linetype='dashed',
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