apr11 1981 -0.342 -0.338 -0.356 -0.122 0.021 -0.014 -0.116 -0.028 0.261 apr16 1981 -0.224 -0.198 -0.229 -0.071 -0.010 -0.015 -0.069 0.159 0.200 apr21 1981 -0.439 -0.553 -0.395 -0.227 -0.034 0.094 -0.141 -0.302 -0.560 apr26 1981 -0.410 -0.275 -0.266 -0.198 0.035 0.053 0.197 0.015 -0.162