BL Lac active (cont'd) YYMMDD(UT) mag observer 980828.066 144 (G. Poyner) 980828.142 144 (G. Poyner) 980828.953 146 (G. Poyner) 980829.042 144 (G. Poyner) 980829.819 149 (T. Kinnunen) 980829.989 148 (G. Poyner) 980830.880 141 (M. Verdenet) 980901.417 148: (L. E. Shaw) 980901.841 146 (T. Kinnunen) 980901.978 149: (G. Poyner) 980902.830 146 (T. Kinnunen) 980903.541 <137 (S. Takahashi) 980903.842 149 (T. Kinnunen) 980905.900 148 (T. Kinnunen) 980906.810 <143 (T. Kinnunen) 980907.950 <143 (T. Kinnunen) 980908.201 <146 (G. Hanson) 980909.160 150 (G. Hanson) 980909.890 144 (M. Verdenet) 980912.669 142 (S. Takahashi) 980913.249 150 (G. Hanson) 980913.569 145 (H. Itoh) 980913.790 145 (T. Kinnunen) 980914.146 141 (G. Hanson) 980914.522 141 (H. Itoh) 980915.203 144 (G. Hanson) 980916.014 144 (G. Poyner) 980916.603 144 (H. Itoh)