diff --git a/data/.DS_Store b/data/.DS_Store
new file mode 100644
index 0000000000000000000000000000000000000000..4bb8a7fc334377d602f394eee0d1d6dcb3c49b1a
Binary files /dev/null and b/data/.DS_Store differ
diff --git a/data/obs.csv b/data/obs.csv
new file mode 100644
index 0000000000000000000000000000000000000000..8a6979c49a262d55fa3fb15a4da2790993dcda1b
--- /dev/null
+++ b/data/obs.csv
@@ -0,0 +1 @@
+4.7,4.3,5.5,2.7
diff --git a/data/obs/site_a.csv b/data/obs/site_a.csv
new file mode 100644
index 0000000000000000000000000000000000000000..7bdef868428ce981c7e57176c9ae6a52dad5dd48
--- /dev/null
+++ b/data/obs/site_a.csv
@@ -0,0 +1 @@
+4.7,4.3,5.5,2.7,4.1
diff --git a/data/prd.csv b/data/prd.csv
new file mode 100644
index 0000000000000000000000000000000000000000..0986e8cacf2ad42a0928df0976bc294e7370f1b0
--- /dev/null
+++ b/data/prd.csv
@@ -0,0 +1 @@
+5.3,4.2,5.7,2.3
diff --git a/data/prd/leadtime_1/site_a.csv b/data/prd/leadtime_1/site_a.csv
new file mode 100644
index 0000000000000000000000000000000000000000..1bf61f423703a08c1298bdd25fc4ebd2c6bdbd9d
--- /dev/null
+++ b/data/prd/leadtime_1/site_a.csv
@@ -0,0 +1,3 @@
+5.3,4.2,5.7,2.3,3.1
+4.3,4.2,4.7,4.3,3.3
+5.3,5.2,5.7,2.3,3.9
diff --git a/data/thr/site_a.csv b/data/thr/site_a.csv
new file mode 100644
index 0000000000000000000000000000000000000000..7a573477c8be5915804ce23d9382b6ebb6f64dae
--- /dev/null
+++ b/data/thr/site_a.csv
@@ -0,0 +1 @@
+4.,5.