Robertson 시간을 Sevan 시간으로 변환
13:26:25
+2
15:26:25
+7
+7
+7
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+6
+6
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+3.5
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+3.5
+3.5
+3.5
+3.5
+3.5
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+3
+3
+2.5
+2
+1.5
+1
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+1
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+1
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+0
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-1
-1
-1
-1
-1
-1
-2
-2
-2
-5
-5
-5
-5
-6
-6
-7
-7
-8
-9