tf_2-tf_1:2.0
tf_3-tf_2:36.0
tf_4-tf_3:0.0
tf_5-tf_4:0.0
tf_6-tf_5:0.0
tf_7-tf_6:0.0
tf_8-tf_7:5.0
tf_9-tf_8:500.0
tf_9-tf_1:543.0