\begin{table}%t2
      \caption{\label{tab2}Kodaikanal observations related to the Greenwich Group numbers.}
                     $$
         \begin{array}{llllll}
            \hline\hline
                      \rm Kodai &~ \rm Green &~\rm   Year &~\rm  Mon &~\rm  Date~ of &~\rm  Flare \\
            \rm No.  &~  \rm No. &~  &~  &~ \rm flare  &~\rm  type \\
                       \hline
                       13~870 & ~ 22~362 & ~ 1970 & ~ 4 & ~ 24 & ~ 1{-}b\\
            "      & ~"        & ~ "    & ~ 4 & ~ 25 & ~ s{-}n\\
            13~875 & ~ 22~370* & ~ 1970 & ~4 & ~ 25 & ~ \\
            13~881 & ~ 22~379 & ~ 1970 & ~ 5 & ~ 7 & ~ s{-}n\\
            "      & ~"        & ~ "    & ~ 5 & ~ 8 & ~ 1{-}n\\
            13~891 & ~ 22~392 & ~ 1970 & ~ 5 & ~ 15 & ~ s{-}n\\
            "      & ~"       & ~ "    & ~ 5 & ~ 16 & ~ 1{-}b\\
            13~901 & ~ 22~411 & ~ 1970 & ~ 5 & ~ 30 & ~ 1{-}b\\
            13~916 & ~ 22~433 & ~ 1970 & ~ 6 & ~ 13 & ~ 1{-}n\\
            "      & ~"       & ~ "    & ~ 6 & ~ 14 & ~ s{-}n\\
            "      & ~"       & ~ "    & ~ 6 & ~ 16 & ~ 1{-}n\\
            13~932 & ~ 22~448 & ~ 1970 & ~ 6 & ~ 27 & ~ s{-}n\\
            "      & ~"       & ~ "    & ~ 6 & ~ 30 & ~ 1{-}n\\
            13~937 & ~ 22~454 & ~ 1970 & ~ 6 & ~ 30 & ~ s{-}n\\
            "      & ~"       & ~ "    & ~ 7 & ~ 1 & ~ s{-}n\\
            13~973 & ~ 22~495* & ~ 1970 & ~ 8 & ~ 6 & ~ s{-}n\\
            13~980 & ~ 22~508 & ~  1970 & ~ 8 & ~ 24 & ~ 2{-}n\\
            14~021 & ~ 22~556 & ~ 1970 & ~ 9 & ~ 27 & ~ 1{-}n\\
            "      & ~"       & ~ "    & ~ 9 & ~ 28 & ~ s{-}n\\
            "      & ~"       & ~ "    & ~ 9 & ~ 29 & ~ s{-}n\\
            14~064 & ~ 22~608* & ~ 1970 & ~ 11 & ~ 13 & ~ 1{-}n \\
            "      & ~"       & ~ "    & ~ 11 & ~ 14 & ~ 1{-}n\\
            14~108 & ~ 22~664 & ~ 1970  & ~ 12 & ~ 1 & ~ s{-}n\\
            14~120 & ~ 22~679 & ~ 1971 & ~ 1 & ~ 21 & ~ 1{-}n\\
            "      & ~"       & ~ "    & ~ 1 & ~ 25 & ~ 1{-}n\\
            14~128 & ~ 22~686 & ~ 1971 & ~ 1 & ~ 31 & ~ 1{-}b\\
            "      & ~"       & ~ "    & ~ 2 & ~ 3 & ~ 1{-}n\\
            14~144 & ~ 22~710 & ~ 1971 & ~ 2 & ~ 16 & ~ 1{-}b\\
            14~175 & ~ 22~738 & ~ 1971 & ~ 3 & ~ 21 & ~ s{-}b\\
            14~184 & ~ 22~755 & ~ 1971 & ~ 4 & ~ 11 & ~ 1{-}n\\
                        \hline
         \end{array}
      $$
\smallskip
$^{\rm *}$ Ambiguity in identifying these spot group
numbers with Greenwich group numbers.
   \end{table}