| check_data | Data Checking Function |
| circ_mle | circ_mle |
| HR_test | Hermans-Rasson test function |
| lr_test | Likelihood ratio test for nested models |
| M1 | Model M1 MLE function |
| M2A | Model M2A MLE function |
| M2B | Model M2B MLE function |
| M2C | Model M2C MLE function |
| M3A | Model M3A MLE function |
| M3B | Model M3B MLE function |
| M4A | Model M4A MLE function |
| M4B | Model M4B MLE function |
| M5A | Model M5A MLE function |
| M5B | Model M5B MLE function |
| plot_circMLE | plot_circMLE |
| pycke_test | Pycke test function |