NGC4151 start of the season YYMMDD(UT) mag observer 980221.998 116 (G. Poyner) 980303.665 113 (T. Watanabe) 980315.692 113 (T. Watanabe) 980321.957 118 (G. Poyner) 980330.956 118 (G. Poyner) 980415.947 118 (G. Poyner) 980420.948 117 (G. Poyner) 980425.901 117 (G. Poyner) 980428.649 113 (T. Watanabe) 980428.992 117 (G. Poyner) 980503.969 117 (G. Poyner) 980504.650 113 (T. Watanabe) 980522.949 117 (G. Poyner) 980611.973 117 (G. Poyner) 980616.940 116 (G. Poyner) 980627.956 117 (G. Poyner) 980704.983 116 (G. Poyner) 981024.828 116 (T. Watanabe)