rownames,month,market,acme 1,1/86,-0.061134,0.03016 2,2/86,0.00822,-0.165457 3,3/86,-0.007381,0.080137 4,4/86,-0.067561,-0.109917 5,5/86,-0.006238,-0.114853 6,6/86,-0.044251,-0.099254 7,7/86,-0.11207,-0.226846 8,8/86,0.030226,0.073445 9,9/86,-0.129556,-0.143064 10,10/86,0.001319,0.034776 11,11/86,-0.033679,-0.063375 12,12/86,-0.072795,-0.058735 13,1/87,0.073396,0.050214 14,2/87,-0.011618,0.111165 15,3/87,-0.026852,-0.127492 16,4/87,-0.040356,0.054522 17,5/87,-0.047539,-0.072918 18,6/87,-0.001732,-0.058979 19,7/87,-0.008899,0.236147 20,8/87,-0.020837,-0.094778 21,9/87,-0.084811,-0.135669 22,10/87,-0.262077,-0.284796 23,11/87,-0.110167,-0.171494 24,12/87,0.034955,0.242616 25,1/88,0.012688,-0.063518 26,2/88,-0.00217,-0.117677 27,3/88,-0.073462,0.201674 28,4/88,-0.043419,-0.147728 29,5/88,-0.05473,-0.170885 30,6/88,-0.011755,-0.014893 31,7/88,-0.061718,-0.110515 32,8/88,-0.10171,-0.168769 33,9/88,-0.032705,-0.135585 34,10/88,-0.045334,-0.084077 35,11/88,-0.079288,-0.16455 36,12/88,-0.036233,0.150269 37,1/89,-0.011494,-0.015672 38,2/89,-0.093729,-0.03786 39,3/89,-0.065215,-0.074712 40,4/89,-0.037113,-0.10853 41,5/89,-0.044399,-0.036769 42,6/89,-0.084412,0.023912 43,7/89,0.003444,-0.07843 44,8/89,-0.05676,-0.132199 45,9/89,-0.07897,-0.110141 46,10/89,-0.105367,-0.126302 47,11/89,-0.038634,-0.09573 48,12/89,-0.043261,0.06574 49,1/90,-0.139773,-0.120056 50,2/90,-0.059094,-0.085205 51,3/90,-0.057736,-0.130433 52,4/90,-0.102524,-0.116728 53,5/90,0.023881,-0.078039 54,6/90,-0.079116,-0.170322 55,7/90,-0.078965,-0.077727 56,8/90,-0.161359,-0.277035 57,9/90,-0.119376,-0.207595 58,10/90,-0.076008,-0.070515 59,11/90,-0.006444,-0.046274 60,12/90,-0.026401,-0.190834