heat,x_1,x_2,x_3,x_4 78.5,7,26,6,60 74.3,1,29,15,52 104.3,11,56,8,20 87.6,11,31,8,47 95.9,7,52,6,33 109.2,11,55,9,22 102.7,3,71,17,6 72.5,1,31,22,44 93.1,2,54,18,22 115.9,21,47,4,26 83.8,1,40,23,34 113.3,11,66,9,12 109.4,10,68,8,12