1 files changed, 3 insertions, 0 deletions
diff --git a/R/sigma_rl.R b/R/sigma_rl.R
new file mode 100644
index 00000000..2b921d29
--- /dev/null
+++ b/R/sigma_rl.R
@@ -0,0 +1,3 @@
+  sigma_rl <- function(y, sigma_low, rsd_high) {
+    sqrt(sigma_low^2 + y^2 * rsd_high^2)
+  }