ph4: 134 questions;
| Question number | Coefficient | Strength |
| 0 | 0.662251655629139 | 151 |
| 1 | 0.424528301886792 | 106 |
| 2 | 0.860215053763441 | 93 |
| 3 | 0.75 | 88 |
| 4 | 0.534883720930233 | 86 |
| 5 | 0.683544303797468 | 79 |
| 6 | 0.58974358974359 | 78 |
| 7 | 0.916666666666667 | 72 |
| 8 | 1 | 72 |
| 9 | 0.697368421052632 | 76 |
| 10 | 1 | 71 |
| 11 | 0.888888888888889 | 72 |
| 12 | 0.468354430379747 | 79 |
| 13 | 0.417721518987342 | 79 |
| 14 | 0.45679012345679 | 81 |
| 15 | 0.465753424657534 | 73 |
| 16 | 0.541666666666667 | 72 |
| 17 | 0.873015873015873 | 63 |
| 18 | 0.828125 | 64 |
| 19 | 0.522388059701492 | 67 |
| 20 | 0.366197183098592 | 71 |
| 21 | 0.373134328358209 | 67 |
| 22 | 0.883333333333333 | 60 |
| 23 | 0.257575757575758 | 66 |
| 24 | 0.436363636363636 | 55 |
| 25 | 0.716981132075472 | 53 |
| 26 | 0.823529411764706 | 51 |
| 27 | 0.290322580645161 | 62 |
| 28 | 0.203125 | 64 |
| 29 | 0.7 | 50 |
| 30 | 0.66 | 50 |
| 31 | 0.60377358490566 | 53 |
| 32 | 0.425531914893617 | 47 |
| 33 | 0.866666666666667 | 45 |
| 34 | 0.954545454545455 | 44 |
| 35 | 0.652173913043478 | 46 |
| 36 | 0.625 | 48 |
| 37 | 0.80952380952381 | 42 |
| 38 | 0.75 | 40 |
| 39 | 0.642857142857143 | 42 |
| 40 | 0.86046511627907 | 43 |
| 41 | 0.744186046511628 | 43 |
| 42 | 0.880952380952381 | 42 |
| 43 | 0.468085106382979 | 47 |
| 44 | 0.790697674418605 | 43 |
| 45 | 0.604651162790698 | 43 |
| 46 | 0.5 | 46 |
| 47 | 0.666666666666667 | 42 |
| 48 | 0.926829268292683 | 41 |
| 49 | 1 | 41 |
| 50 | 0.375 | 48 |
| 51 | 0.288888888888889 | 45 |
| 52 | 0.722222222222222 | 36 |
| 53 | 0.609756097560976 | 41 |
| 54 | 0.710526315789474 | 38 |
| 55 | 0.888888888888889 | 36 |
| 56 | 0.6 | 40 |
| 57 | 0.386363636363636 | 44 |
| 58 | 0.621621621621622 | 37 |
| 59 | 0.487179487179487 | 39 |
| 60 | 0.394736842105263 | 38 |
| 61 | 0.459459459459459 | 37 |
| 62 | 0.617647058823529 | 34 |
| 63 | 0.558823529411765 | 34 |
| 64 | 0.896551724137931 | 29 |
| 65 | 0.371428571428571 | 35 |
| 66 | 0.870967741935484 | 31 |
| 67 | 0.709677419354839 | 31 |
| 68 | 0.542857142857143 | 35 |
| 69 | 0.4375 | 32 |
| 70 | 0.514285714285714 | 35 |
| 71 | 0.933333333333333 | 30 |
| 72 | 0.903225806451613 | 31 |
| 73 | 0.617647058823529 | 34 |
| 74 | 0.414634146341463 | 41 |
| 75 | 0.405405405405405 | 37 |
| 76 | 0.323529411764706 | 34 |
| 77 | 0.612903225806452 | 31 |
| 78 | 0.222222222222222 | 45 |
| 79 | 0.4 | 40 |
| 80 | 0.212121212121212 | 33 |
| 81 | 0.258064516129032 | 31 |
| 82 | 0.366666666666667 | 30 |
| 83 | 0.666666666666667 | 24 |
| 84 | 0.607142857142857 | 28 |
| 85 | 0.379310344827586 | 29 |
| 86 | 0.6 | 25 |
| 87 | 0.72 | 25 |
| 88 | 0.64 | 25 |
| 89 | 0.333333333333333 | 30 |
| 90 | 0.52 | 25 |
| 91 | 0.212121212121212 | 33 |
| 92 | 0.379310344827586 | 29 |
| 93 | 0.303030303030303 | 33 |
| 94 | 0.344827586206897 | 29 |
| 95 | 0.590909090909091 | 22 |
| 96 | 0.842105263157895 | 19 |
| 97 | 0.863636363636364 | 22 |
| 98 | 0.95 | 20 |
| 99 | 0.583333333333333 | 24 |
| 100 | 0.6 | 25 |
| 101 | 0.863636363636364 | 22 |
| 102 | 0.48 | 25 |
| 103 | 0.52 | 25 |
| 104 | 0.333333333333333 | 30 |
| 105 | 0.952380952380952 | 21 |
| 106 | 0.6 | 25 |
| 107 | 0.818181818181818 | 22 |
| 108 | 0.44 | 25 |
| 109 | 1 | 21 |
| 110 | 0.863636363636364 | 22 |
| 111 | 0.863636363636364 | 22 |
| 112 | 0.555555555555556 | 27 |
| 113 | 0.857142857142857 | 21 |
| 114 | 0.464285714285714 | 28 |
| 115 | 0.739130434782609 | 23 |
| 116 | 0.727272727272727 | 22 |
| 117 | 0.590909090909091 | 22 |
| 118 | 0.842105263157895 | 19 |
| 119 | 0.387096774193548 | 31 |
| 120 | 0.482758620689655 | 29 |
| 121 | 0.80952380952381 | 21 |
| 122 | 0.407407407407407 | 27 |
| 123 | 0.448275862068966 | 29 |
| 124 | 0.2 | 35 |
| 125 | 0.384615384615385 | 26 |
| 126 | 0.789473684210526 | 19 |
| 127 | 0.842105263157895 | 19 |
| 128 | 0.6 | 20 |
| 129 | 0.65 | 20 |
| 130 | 0.375 | 24 |
| 131 | 0.409090909090909 | 22 |
| 132 | 0.380952380952381 | 21 |
| 133 | 0.32 | 25 |
total: answers: 5558 (113 active sessions);