diff --git a/include/titanlib.h b/include/titanlib.h
index a4bcd90..6bb3604 100644
--- a/include/titanlib.h
+++ b/include/titanlib.h
@@ -612,9 +612,27 @@ namespace titanlib {
              */
             void range_check(const vec& min, const vec& max, const ivec& indices=ivec(1, -1));
             void range_check_climatology(int unixtime, const vec& pos, const vec& neg, const ivec& indices=ivec(1, -1));
-            void sct(int num_min, int num_max, float inner_radius, float outer_radius, int num_iterations, int num_min_prof, float min_elev_diff, float min_horizontal_scale, float vertical_scale, const vec& t2pos, const vec& t2neg, const vec& eps2, vec& prob_gross_error, vec& rep, const ivec& indices=ivec(1, -1));
-            void buddy_check(const vec& radius, const ivec& num_min, float threshold, float max_elev_diff, float elev_gradient, float min_std, int num_iterations, const ivec& obs_to_check=ivec(), const ivec& indices=ivec(1, -1));
-            void buddy_event_check(const vec& radius, const ivec& num_min, float event_threshold, float threshold, float max_elev_diff, float elev_gradient, int num_iterations, const ivec& obs_to_check=ivec(), const ivec& indices=ivec(1, -1));
+            void sct(int num_min, int num_max, 
+                    float inner_radius, float outer_radius, 
+                    int num_iterations, int num_min_prof, 
+                    float min_elev_diff, float min_horizontal_scale, float vertical_scale, 
+                    const vec& t2pos, const vec& t2neg, const vec& eps2, vec& prob_gross_error, 
+                    vec& rep, const ivec& indices=ivec(1, -1));
+            void sct_dual(const vec& event_thresholds, 
+                                ConditionType condition, 
+                                int num_min, int num_max,
+                                float inner_radius, float outer_radius,
+                                int num_iterations,
+                                float min_horizontal_scale, float max_horizontal_scale,
+                                int kth_closest_obs_horizontal_scale,
+                                float vertical_scale,
+                                const vec& test_thresholds,
+                                bool debug,
+                                const ivec& obs_to_check=ivec(), const ivec& indices=ivec(1, -1));
+            void buddy_check(const vec& radius, const ivec& num_min, float threshold, float max_elev_diff, float elev_gradient, float min_std, int num_iterations,
+                             const ivec& obs_to_check=ivec(), const ivec& indices=ivec(1, -1));
+            void buddy_event_check(const vec& radius, const ivec& num_min, float event_threshold, float threshold, float max_elev_diff, float elev_gradient, int num_iterations,
+                             const ivec& obs_to_check=ivec(), const ivec& indices=ivec(1, -1));
             void isolation_check(int num_min, float radius, float vertical_radius=MV, const ivec& indices=ivec(1, -1));
             void isolation_check(const ivec& num_min, const vec& radius, const vec& vertical_radius=vec(), const ivec& indices=ivec(1, -1));
             void duplicate_check(float radius, float vertical_range=titanlib::MV, const ivec& indices=ivec(1, -1));
diff --git a/src/dataset.cpp b/src/dataset.cpp
index e7231b5..58f625d 100644
--- a/src/dataset.cpp
+++ b/src/dataset.cpp
@@ -51,6 +51,28 @@ void titanlib::Dataset::sct(int num_min, int num_max, float inner_radius, float
     merge(new_flags, indices);
 }
 
+void titanlib::Dataset::sct_dual(const vec& event_thresholds, 
+                                ConditionType condition, 
+                                int num_min, int num_max,
+                                float inner_radius, float outer_radius,
+                                int num_iterations,
+                                float min_horizontal_scale, float max_horizontal_scale,
+                                int kth_closest_obs_horizontal_scale,
+                                float vertical_scale,
+                                const vec& test_thresholds,
+                                bool debug,
+                                const ivec& obs_to_check,
+                                const ivec& indices){
+    // Only keep flags that are not flagged
+    ivec new_flags = titanlib::sct_dual(get_unflagged_points(), get_unflagged(values), get_unflagged(obs_to_check),
+                                        event_thresholds, condition,
+                                        num_min, num_max, inner_radius, outer_radius, num_iterations, 
+                                        min_horizontal_scale, max_horizontal_scale,
+                                        kth_closest_obs_horizontal_scale, vertical_scale,
+                                        test_thresholds, debug);
+    merge(new_flags, indices);
+}
+
 void titanlib::Dataset::buddy_check(const vec& radius, const ivec& num_min, float threshold, float max_elev_diff, float elev_gradient, float min_std, int num_iterations, const ivec& obs_to_check, const ivec& indices) {
     ivec new_flags = titanlib::buddy_check(get_unflagged_points(), get_unflagged(values), get_unflagged(radius), get_unflagged(num_min), threshold, max_elev_diff, elev_gradient, min_std, num_iterations, get_unflagged(obs_to_check));
     merge(new_flags, indices);