Sample data mcol,4 ndata,46 c(0),-5508.07 c(1),2.31331 c(2),0.24091 c(3),-218.574 c(4),33.053 i,Obs.,Est. 1,44523,47905.3 2,10395,13906.9 3,8669,16341.6 4,12808,16018.7 5,7640,11273.2 6,7094,12328.4 7,17556,18994 8,20320,19997.3 9,18715,15194.3 10,16755,17495.1 11,34601,30909.2 12,27811,25032.4 13,88406,102885 14,48030,39179.4 15,18213,22608.6 16,8839,9178.26 17,12086,15547.6 18,8871,10635.8 19,8961,11483.4 20,15280,20018.5 21,17837,21524.6 22,37421,29641.7 23,50998,47562.7 24,14809,16088.9 25,12610,11537.6 26,35478,26257 27,75497,74312.1 28,55464,43697.8 29,7916,14505.2 30,14259,15194.2 31,6244,9006.64 32,5400,10764.4 33,19015,16222 34,36771,23841.7 35,13827,9228.07 36,9372,13063.7 37,11088,9127.35 38,9960,13488 39,8516,15757.7 40,51175,27152.7 41,10384,8574.89 42,10652,16816.4 43,15987,14515.4 44,10216,12071.6 45,8460,8833.7 46,12932,12142