Table 4. Contents of trees91.dat (File 4) _____________________________________________________________________________________ Spread- Variable Variable Starting Ending sheet Variable type width column column Units column Definition _____________________________________________________________________________________ C character 6 1 6 A CO2 treatment level N character 6 7 12 B N treatment level CHBR character 6 13 18 C Open-top chamber identification label REP character 6 19 24 D Seedling replicate identification label LFBM numeric 6 25 30 g E Leaf biomass STBM numeric 6 31 36 g F Stem biomass RTBM numeric 6 37 42 g G Root biomass LFNCC numeric 6 43 48 % H Leaf N concentration STNCC numeric 6 49 54 % I Stem N concentration RTNCC numeric 6 55 60 % J Root N concentration LFBCC numeric 6 61 66 ppm K Leaf B concentration STBCC numeric 6 67 72 ppm L Stem B concentration RTBCC numeric 6 73 78 ppm M Root B concentration LFCACC numeric 6 79 84 % N Leaf Ca concentration STCACC numeric 6 85 90 % O Stem Ca concentration RTCACC numeric 6 91 96 % P Root Ca concentration LFKCC numeric 6 97 102 % Q Leaf K concentration STKCC numeric 6 103 108 % R Stem K concentration RTKCC numeric 6 109 114 % S Root K concentration LFMGCC numeric 6 115 120 % T Leaf Mg concentration STMGCC numeric 6 121 126 % U Stem Mg concentration RTMGCC numeric 6 127 132 % V Root Mg concentration LFPCC numeric 6 133 138 % W Leaf P concentration STPCC numeric 6 139 144 % X Stem P concentration RTPCC numeric 6 145 150 % Y Root P concentration LFSCC numeric 6 151 156 % Z Leaf S concentration STSCC numeric 6 157 162 % AA Stem S concentration RTSCC numeric 6 163 168 % AB Root S concentration _____________________________________________________________________________________