MKN421 recent (cont'd) YYYYMMDD(UT) mag observer 20001227.972 130 (J. Ripero) 20001229.824 132 (H. Itoh) 20010103.698 131 (T. Watanabe) 20010104.606 131 (T. Watanabe) 20010105.644 131 (T. Watanabe) 20010107.058 129 (G. Poyner) 20010113.964 129 (G. Poyner) 20010116.026 130 (G. Poyner) 20010117.613 131 (T. Watanabe) 20010123.631 129 (T. Watanabe) 20010123.658 130 (T. Watanabe) 20010123.685 131 (T. Watanabe) 20010125.358 132 (M. Simonsen) 20010127.201 130 (H. McGee)