Update README.md

Author: valentinsulzer

README.md

@@ -2,25 +2,25 @@
 Benchmarks corresponding to the latest commit on develop branch in the PyBaMM repository
 
 ## Solve Time vs Abstols
-<img src='./benchmarks/benchmark_images/time_vs_abstols_22.8.png'>
+<img src='./benchmarks/benchmark_images/time_vs_abstols_22.9.png'>
 
 ## Solve Time vs Reltols
-<img src='./benchmarks/benchmark_images/time_vs_reltols_22.8.png'>
+<img src='./benchmarks/benchmark_images/time_vs_reltols_22.9.png'>
 
 ## Solve Time vs Mesh size
-<img src='./benchmarks/benchmark_images/time_vs_mesh_size_22.8.png'>
+<img src='./benchmarks/benchmark_images/time_vs_mesh_size_22.9.png'>
 
 ## Solve Time vs dt_max
-<img src='./benchmarks/benchmark_images/time_vs_dt_max_22.8.png'>
+<img src='./benchmarks/benchmark_images/time_vs_dt_max_22.9.png'>
 
 ## Solve Time vs Number of states
-<img src='./benchmarks/benchmark_images/time_vs_no_of_states_22.8.png'>
+<img src='./benchmarks/benchmark_images/time_vs_no_of_states_22.9.png'>
 
 ## Comsol comparison
-<img src='./benchmarks/benchmark_images/comsol_comparison_22.8.png'>
+<img src='./benchmarks/benchmark_images/comsol_comparison_22.9.png'>
 
 ## Ecker comparison
-<img src='./benchmarks/benchmark_images/ecker_comparison_22.8.png'>
+<img src='./benchmarks/benchmark_images/ecker_comparison_22.9.png'>
 
 ## Discharge curve
-<img src='./benchmarks/benchmark_images/discharge_curve_22.8.png'>
+<img src='./benchmarks/benchmark_images/discharge_curve_22.9.png'>