diff --git a/.gitattributes b/.gitattributes
index 9d208b5..37eee20 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -9,3 +9,4 @@ PeMS-BAY/pems-bay.h5 filter=lfs diff=lfs merge=lfs -text
 2005年至2014年英国交通事故的道路安全数据/Casualties0514.csv filter=lfs diff=lfs merge=lfs -text
 美国事件数据/us-accidents.zip filter=lfs diff=lfs merge=lfs -text
 Seattle-Loop-2015/speed_matrix_2015 filter=lfs diff=lfs merge=lfs -text
+Seattle-Loop-2015/speed_matrix_2015_1mph filter=lfs diff=lfs merge=lfs -text
diff --git a/Seattle-Loop-2015/speed_matrix_2015_1mph b/Seattle-Loop-2015/speed_matrix_2015_1mph
new file mode 100755
index 0000000..ff58425
--- /dev/null
+++ b/Seattle-Loop-2015/speed_matrix_2015_1mph
@@ -0,0 +1,3 @@
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