days_since_fert del13C_tiss_May del13C_tiss_Aug del13C_tiss_Aug_trt del15N_tiss_May del15N_tiss_Aug del15N_tiss_Aug_trt del13C_alg_May del13C_alg_Aug del15N_alg_May del15N_alg_Aug del13C_sw_May del13C_sw_Aug del13C_sw_Aug_trt 0 nd -20.00 -20.00 nd 9.87 9.87 nd nd nd nd nd -0.12 -0.52 1 nd -19.48 -19.38 nd 10.10 10.12 nd -35.77 nd -6.48 nd -0.03 -0.46 2 -19.55 nd nd 9.58 nd nd -39.47 -50.19 -8.66 -2.81 -0.04 nd nd 3 nd -29.46 -29.73 nd 5.07 4.98 -46.58 -47.15 -7.60 -2.96 nd 0.03 -0.52 4 nd nd nd nd nd nd -46.42 -47.01 -7.52 -2.79 nd nd nd 5 -23.60 -32.84 -33.57 5.05 3.97 3.62 -46.49 -47.13 -7.21 -3.59 -0.04 -0.17 -0.77 6 nd nd nd nd nd nd -45.38 -30.16 -5.67 -5.60 nd nd nd 7 nd -34.17 -34.44 nd 2.94 2.11 -45.79 -32.97 -5.82 -6.15 nd -0.29 -0.81 8 -30.80 nd nd 2.00 nd nd -45.42 -39.91 -4.96 -5.75 -0.61 nd nd 9 nd -32.92 -32.96 nd 1.05 0.47 -27.85 -37.57 -10.44 -5.74 nd -0.31 -1.06 10 nd nd nd nd nd nd -33.89 -35.82 -12.71 -6.04 nd nd nd 11 -30.32 -33.15 -32.95 -0.73 -0.47 -0.96 -29.04 -32.48 -9.74 -6.24 -0.15 -0.49 -0.92 12 nd nd nd nd nd nd -26.89 -50.96 -5.11 -3.09 nd nd nd 13 -28.14 -34.23 -33.94 -3.34 -0.99 -1.38 -26.76 -40.37 -5.60 -6.50 0.10 -0.08 -0.56 14 nd nd nd nd nd nd -34.38 -53.80 -9.35 -4.59 nd nd nd 15 -28.10 -34.76 -34.66 -3.09 -1.79 -2.08 -38.49 -37.70 -11.41 -7.59 0.37 -0.27 -0.97 16 nd nd nd nd nd nd -43.19 -33.32 -7.81 -4.69 nd nd nd 17 -32.95 -33.90 -33.74 -5.18 -1.83 -2.19 -31.95 -33.32 -4.75 -5.17 0.18 -0.09 -0.58 18 nd nd nd -4.92 nd nd -35.38 -34.73 -12.15 -4.52 nd nd nd 19 -27.31 -33.18 -33.14 -2.64 -2.37 -2.61 nd -44.41 nd -4.32 nd -0.02 -0.51 20 nd nd nd nd nd nd nd -36.64 nd -5.64 nd nd nd 21 nd -33.97 -34.04 nd -2.81 -2.94 nd nd nd nd nd nd nd