| Boxplot Notches |
| Variable | lower bound | median | upper bound |
| U1 | 3.92526856436522 | 4 | 4.07473143563478 |
| U2 | 3.92526856436522 | 4 | 4.07473143563478 |
| U3 | 3.92526856436522 | 4 | 4.07473143563478 |
| U4 | 4 | 4 | 4 |
| U5 | 3.92526856436522 | 4 | 4.07473143563478 |
| U6 | 3.92526856436522 | 4 | 4.07473143563478 |
| U7 | 3.92526856436522 | 4 | 4.07473143563478 |
| U8 | 3.92526856436522 | 4 | 4.07473143563478 |
| U9 | 3.92526856436522 | 4 | 4.07473143563478 |
| U10 | 2.92526856436522 | 3 | 3.07473143563478 |
| U11 | 2.88790284654782 | 3 | 3.11209715345218 |
| U12 | 2.92526856436522 | 3 | 3.07473143563478 |
| U13 | 2.92526856436522 | 3 | 3.07473143563478 |
| U14 | 2.85053712873043 | 3 | 3.14946287126957 |
| U15 | 3.92526856436522 | 4 | 4.07473143563478 |
| U16 | 3.92526856436522 | 4 | 4.07473143563478 |
| U17 | 2.92526856436522 | 3 | 3.07473143563478 |
| U18 | 2.92526856436522 | 3 | 3.07473143563478 |
| U19 | 3.92526856436522 | 4 | 4.07473143563478 |
| U20 | 3.92526856436522 | 4 | 4.07473143563478 |
| U21 | 3.85053712873043 | 4 | 4.14946287126957 |
| U22 | 3.92526856436522 | 4 | 4.07473143563478 |
| U23 | 3.92526856436522 | 4 | 4.07473143563478 |
| U24 | 2.92526856436522 | 3 | 3.07473143563478 |
| U25 | 1.92526856436522 | 2 | 2.07473143563478 |
| U26 | 3.92526856436522 | 4 | 4.07473143563478 |
| U27 | 3.92526856436522 | 4 | 4.07473143563478 |
| U28 | 3.92526856436522 | 4 | 4.07473143563478 |
| U29 | 3.85053712873043 | 4 | 4.14946287126957 |
| U30 | 3.92526856436522 | 4 | 4.07473143563478 |
| U31 | 3.92526856436522 | 4 | 4.07473143563478 |
| U32 | 3.92526856436522 | 4 | 4.07473143563478 |
| U33 | 3.92526856436522 | 4 | 4.07473143563478 |
