diff --git a/.gitignore b/.gitignore
index 26cc1dabece43f2c747f8ed5de187066fbb50eda..8a78f8831b85dc915b1a90d9bb3f242cde71519c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1137,4 +1137,4 @@ Debug*/Debug*\ Libs
 /WHO-COVID-19-global-data *.csv
 /data/WHO-COVID-19-global-data *.csv
 /data/ecdc_europa_data (1).csv
-/data/rki/RKI_COVID19.csv
+/data/RKI_COVID19.csv
diff --git a/data/RKI_COVID19_2020_01.csv b/data/rki/RKI_COVID19__2020-01.csv
similarity index 100%
rename from data/RKI_COVID19_2020_01.csv
rename to data/rki/RKI_COVID19__2020-01.csv
diff --git a/data/RKI_COVID19_2020_02.csv b/data/rki/RKI_COVID19__2020-02.csv
similarity index 100%
rename from data/RKI_COVID19_2020_02.csv
rename to data/rki/RKI_COVID19__2020-02.csv
diff --git a/data/RKI_COVID19_2020_03.csv b/data/rki/RKI_COVID19__2020-03.csv
similarity index 100%
rename from data/RKI_COVID19_2020_03.csv
rename to data/rki/RKI_COVID19__2020-03.csv
diff --git a/data/RKI_COVID19_2020_04.csv b/data/rki/RKI_COVID19__2020-04.csv
similarity index 100%
rename from data/RKI_COVID19_2020_04.csv
rename to data/rki/RKI_COVID19__2020-04.csv
diff --git a/data/RKI_COVID19_2020_05.csv b/data/rki/RKI_COVID19__2020-05.csv
similarity index 100%
rename from data/RKI_COVID19_2020_05.csv
rename to data/rki/RKI_COVID19__2020-05.csv
diff --git a/data/RKI_COVID19_2020_06.csv b/data/rki/RKI_COVID19__2020-06.csv
similarity index 100%
rename from data/RKI_COVID19_2020_06.csv
rename to data/rki/RKI_COVID19__2020-06.csv
diff --git a/data/RKI_COVID19_2020_07.csv b/data/rki/RKI_COVID19__2020-07.csv
similarity index 100%
rename from data/RKI_COVID19_2020_07.csv
rename to data/rki/RKI_COVID19__2020-07.csv
diff --git a/data/RKI_COVID19_2020_08.csv b/data/rki/RKI_COVID19__2020-08.csv
similarity index 100%
rename from data/RKI_COVID19_2020_08.csv
rename to data/rki/RKI_COVID19__2020-08.csv
diff --git a/data/RKI_COVID19_2020_09.csv b/data/rki/RKI_COVID19__2020-09.csv
similarity index 100%
rename from data/RKI_COVID19_2020_09.csv
rename to data/rki/RKI_COVID19__2020-09.csv
diff --git a/data/RKI_COVID19_2020_10.csv b/data/rki/RKI_COVID19__2020-10.csv
similarity index 100%
rename from data/RKI_COVID19_2020_10.csv
rename to data/rki/RKI_COVID19__2020-10.csv
diff --git a/data/RKI_COVID19_2020_11.csv b/data/rki/RKI_COVID19__2020-11.csv
similarity index 100%
rename from data/RKI_COVID19_2020_11.csv
rename to data/rki/RKI_COVID19__2020-11.csv
diff --git a/data/RKI_COVID19_2020_12.csv b/data/rki/RKI_COVID19__2020-12.csv
similarity index 100%
rename from data/RKI_COVID19_2020_12.csv
rename to data/rki/RKI_COVID19__2020-12.csv
diff --git a/data/RKI_COVID19_2021_01.csv b/data/rki/RKI_COVID19__2021-01.csv
similarity index 100%
rename from data/RKI_COVID19_2021_01.csv
rename to data/rki/RKI_COVID19__2021-01.csv
diff --git a/data/split_rki.sh b/data/split_rki.sh
new file mode 100755
index 0000000000000000000000000000000000000000..49c7c119b021d0da1b9ba5b72ddfc1485308855e
--- /dev/null
+++ b/data/split_rki.sh
@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+
+JAHRE="2020 2021"
+MONATE="01 02 03 04 05 06 07 08 09 10 11 12"
+
+for JAHR in $JAHRE
+do
+  echo $JAHR
+  for MONAT in $MONATE
+  do
+    echo "$JAHR-$MONAT"
+    TAG_DATEI="$JAHR-$MONAT"
+    TAG_GREP="$JAHR/$MONAT"
+    DATEI="rki/RKI_COVID19__$TAG_DATEI.csv"
+    echo $TAG_DATEI
+    echo $TAG_GREP
+    echo $DATEI
+    cat RKI_COVID19.csv | grep $TAG_GREP > $DATEI
+  done
+done
\ No newline at end of file