search for: x01_1996

.....$ ID : int [1:14] 73 68 49 62 51 79 69 77 57 53 ... .. ..$ Stazione: Factor w/ 29 levels "ALIANO","BONIFATI",..: 2 3 4 5 10 11 12 16 17 19 ... .. ..$ X01_1994: num [1:14] 9.34 10.67 5.29 11.86 9.15 ... .. ..$ X01_1995: num [1:14] 7.07 9.22 2.32 9.3 6.66 ... .. ..$ X01_1996: num [1:14] 9.41 10.4 5.99 12.3 9.93 ... .. ..$ X01_1997: num [1:14] 10.67 10.65 5.76 12.82 10.1 ... .. ..$ X01_1998: num [1:14] 9.57 10.12 4.44 10.34 8.97 ... .. ..$ X01_1999: num [1:14] 8.96 10.21 3.23 10.83 7.74 ... .. ..$ X01_2000: num [1:14] 6.58 8.46 2.8 8.37 6.55 ... Now I want to d...