| MOUNTAINS AREA | HILLS AREA | FLATLANDS AREA | TURIN AREA | |||||||||||||
| YEARS | N˚ OP. GAUGES | k | σ | μ | N˚ OP. GAUGES | k | σ | μ | N˚ OP. GAUGES | k | σ | μ | N˚ OP. GAUGES | k | σ | μ |
| 1988-1990 | 0 | // | // | // | 1 | 0 | 0 | 0 | // | // | // | 0 | // | // | // | |
| 1989-1991 | 1 | 0.5806 | 10.8670 | 59.7271 | 1 | −1.5876 | 9.4706 | 67.8347 | 0 | // | // | // | 0 | // | // | // |
| 1990-1992 | 1 | 0.5683 | 9.6966 | 59.3485 | 1 | −1.5876 | 9.4706 | 67.8347 | 0 | // | // | // | 0 | // | // | // |
| 1991-1993 | 1 | 0.5280 | 11.8845 | 61.8248 | 2 | −2.0215 | 15.0321 | 66.3641 | 1 | 0 | 0 | 52.2000 | 0 | // | // | // |
| 1992-1994 | 1 | 0.7859 | 13.2706 | 61.2843 | 2 | −1.4373 | 53.5602 | 86.5360 | 1 | 4.8509 | 0.8776 | 52.3809 | 0 | // | // | // |
| 1993-1995 | 1 | 0.8065 | 14.2835 | 62.0898 | 2 | −1.4373 | 53.5602 | 86.5360 | 1 | 4.8509 | 0.8776 | 52.3809 | 0 | // | // | // |
| 1994-1996 | 1 | 1.3781 | 6.8363 | 54.8957 | 2 | −1.3290 | 48.7865 | 87.0908 | 2 | 3.2888 | 0.1118 | 50.8336 | 0 | // | // | // |
| 1995-1997 | 1 | 1.1285 | 5.3076 | 54.2275 | 2 | −1.2371 | 5.3719 | 58.4577 | 3 | 3.8650 | 0.1975 | 50.8510 | 0 | // | // | // |
| 1996-1998 | 1 | 0.8281 | 9.1278 | 57.4218 | 2 | −0.3610 | 4.3080 | 55.0101 | 3 | 1.1738 | 3.7033 | 53.1793 | 0 | // | // | // |
| 1997-1999 | 2 | 0.3175 | 15.5003 | 66.9868 | 2 | 0.7879 | 1.9247 | 52.7812 | 3 | 0.5145 | 3.8462 | 54.2952 | 0 | // | // | // |
| 1998-2000 | 2 | 0.5829 | 19.9335 | 69.9485 | 2 | 0.7009 | 7.3211 | 57.0845 | 3 | 0.4562 | 5.8234 | 56.9785 | 0 | // | // | // |
| 1999-2001 | 3 | 0.4163 | 21.0775 | 70.4729 | 2 | 0.1518 | 10.5032 | 64.6230 | 3 | 0.5022 | 6.5422 | 57.3179 | 0 | // | // | // |
| 2000-2002 | 3 | 0.5477 | 14.7934 | 64.2704 | 2 | −0.0236 | 10.3148 | 64.3121 | 3 | 0.1516 | 9.8393 | 60.9960 | 0 | // | // | // |
| 2001-2003 | 3 | 0.4090 | 10.2889 | 60.7514 | 3 | −0.4960 | 7.6925 | 59.0111 | 4 | −0.4035 | 9.8104 | 60.2950 | 1 | 4.6151 | 0.5704 | 53.7235 |
| 2002-2004 | 3 | 0.5816 | 8.3197 | 58.2862 | 3 | −0.2726 | 6.2889 | 57.8034 | 4 | −0.3304 | 9.1165 | 59.6729 | 1 | 4.6151 | 0.5704 | 53.7235 |
| 2003-2005 | 3 | 0.5604 | 6.8205 | 56.5929 | 4 | −1.1612 | 6.5376 | 59.9699 | 5 | −1.2200 | 7.8285 | 62.9830 | 1 | 3.6551 | 0.0350 | 71.4095 |
| 2004-2006 | 3 | 0.9374 | 10.2711 | 58.0839 | 4 | 0.2694 | 10.0431 | 60.2717 | 5 | 0.1258 | 13.9988 | 64.7480 | 4 | 1.1448 | 7.2532 | 55.4808 |
| 2005-2007 | 3 | 0.8393 | 10.9720 | 58.8442 | 4 | 0.2029 | 10.9448 | 61.2991 | 5 | 0.1510 | 14.3979 | 64.5242 | 4 | 0.4044 | 9.2279 | 58.6058 |
| 2006-2008 | 4 | 0.2395 | 15.7481 | 67.5252 | 4 | 0.4828 | 7.4773 | 56.8738 | 5 | 0.6596 | 10.5079 | 60.3006 | 4 | 0.6370 | 5.6484 | 55.6438 |
| 2007-2009 | 4 | 0.0192 | 12.7547 | 64.2971 | 4 | 0.1136 | 5.8440 | 57.5715 | 5 | 0.7013 | 6.8158 | 56.5110 | 4 | 0.0723 | 4.9840 | 56.9240 |
| 2008-2010 | 4 | 0.0406 | 13.5229 | 66.7912 | 4 | 0.3395 | 5.0482 | 55.0537 | 5 | 0.7786 | 7.0553 | 56.3876 | 4 | 0.5644 | 4.0506 | 55.2457 |
| 2009-2011 | 4 | 0.6543 | 12.0260 | 61.2153 | 4 | 0.2591 | 5.3467 | 56.2620 | 5 | 0.3626 | 6.7342 | 56.8738 | 4 | 0.7215 | 4.8569 | 54.5553 |
| 2010-2012 | 4 | 0.6450 | 13.6195 | 62.4102 | 4 | 0.3062 | 4.6680 | 55.3697 | 5 | 0.4681 | 6.8359 | 56.8280 | 4 | 0.7743 | 5.6112 | 55.0242 |
| 2011-2013 | 4 | 0.7911 | 10.9740 | 59.7070 | 4 | 0.2689 | 4.6251 | 57.5555 | 5 | 0.2923 | 6.2409 | 57.1092 | 4 | 1.2506 | 4.2261 | 53.2391 |
| 2012-2014 | 4 | 0.5214 | 8.9774 | 59.4156 | 4 | 3.7461 | 0.5199 | 55.5383 | 5 | 0.9004 | 4.8822 | 55.1968 | 4 | 1.0791 | 3.9685 | 53.7345 |
| 1988-2014 | ALL | 0.6085 | 11.8615 | 61.0854 | ALL | 0.4263 | 6.5775 | 56.8874 | ALL | 0.6150 | 6.9433 | 56.6746 | ALL | 0.7311 | 5.3279 | 55.0701 |