diff --git a/test.py b/test.py
index a9d69dce..9968cb65 100644
--- a/test.py
+++ b/test.py
@@ -244,13 +244,17 @@ if __name__ == '__main__':
             r = test(opt.cfg, opt.data, opt.weights, opt.batch_size, opt.img_size, opt.conf_thres, v, opt.save_json)[0]
             y.append(r + (time.time() - t,))
         y = np.stack(y, 0)
+        np.savetxt('study.txt', y, fmt='%10.4g')
 
         # Plot
-        fig, ax = plt.subplots(1, 1, figsize=(10, 5))
-        ax.plot(x, y[:, 2], marker='.', label='mAP@0.5')
-        ax.plot(x, y[:, 3], marker='.', label='mAP@0.5:0.95')
-        ax.legend()
-        ax.set_xlabel('nms_thr')
-        ax.set_ylabel('mAP')
+        fig, ax = plt.subplots(2, 1, figsize=(6, 6))
+        ax[0].plot(x, y[:, 2], marker='.', label='mAP@0.5')
+        ax[0].plot(x, y[:, 3], marker='.', label='mAP@0.5:0.95')
+        ax[0].legend()
+        ax[0].set_xlabel('nms_thr')
+        ax[0].set_ylabel('mAP')
+        ax[1].plot(x, y[:, -1], marker='.', label='time')
+        ax[1].set_xlabel('nms_thr')
+        ax[1].set_ylabel('time (s)')
         fig.tight_layout()
-        plt.savefig('parameters.jpg', dpi=200)
+        plt.savefig('study.jpg', dpi=200)