diff --git a/examples/notebook_population.ipynb b/examples/notebook_population.ipynb
index 267daec0a6ff70f9aa27f8745513d389bed3544b..1ae8636dae487363ec1f7e8915bdd683a1eeec2f 100644
--- a/examples/notebook_population.ipynb
+++ b/examples/notebook_population.ipynb
@@ -676,7 +676,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 12,
+   "execution_count": 14,
    "id": "7212b6be-9787-4122-a7f1-86538cf38179",
    "metadata": {},
    "outputs": [
@@ -701,10 +701,10 @@
       "Do join of subprocesses ...\n",
       "Joined all subprocesses.\n",
       "**********************************************************\n",
-      "*  Population-19273c7d83674b89902b735e67ae3ae3 finished! *\n",
+      "*  Population-d56f97fb060a4bb69b3d30bcba0d01d4 finished! *\n",
       "*           The total probability is 0.0443872.          *\n",
-      "*  It took a total of 4.23s to run 19 systems on 2 cores *\n",
-      "*                   = 8.46s of CPU time.                 *\n",
+      "*  It took a total of 3.75s to run 19 systems on 2 cores *\n",
+      "*                   = 7.50s of CPU time.                 *\n",
       "*              Maximum memory use 493.797 MB             *\n",
       "**********************************************************\n",
       "\n",
@@ -714,8 +714,8 @@
       "\n",
       "\n",
       "time mass zams_mass probability radius stellar_type\n",
-      "2.436983545179e+01 1.35842 10.9948 0.00144093 1.72498e-05 13\n",
       "3.598268106261e+01 1.30592 8.75988 0.00193614 1.72498e-05 13\n",
+      "2.436983545179e+01 1.35842 10.9948 0.00144093 1.72498e-05 13\n",
       "1.690157943854e+01 1.43124 13.7998 0.00107238 1.72498e-05 13\n",
       "1.242397939734e+01 1.52416 17.3205 0.000798096 1.72498e-05 13\n",
       "9.758088010684e+00 1.6691 21.7394 0.000593966 1.72498e-05 13\n",