how to select desired row

I have a 5 columns of data 

data =

col1   col2  col3    col4     col5
1      3     0.9     0.02     94
2      4      01     0.05     93
3      1      2      0.03     94
1      3       5     0.236    97
4      5     10      0.059    69 
2      10     02      0.02     89  

now i want to select the values greater that 90 which is 5th column
and want to dispaly it for ex i want to dispay as

i have totally 900 rows and 5 column of data,please help

1      3     0.9     0.02     94
2      4      01     0.05     93
3      1      2      0.03     94
1      3       5     0.236    97

next i have two onws in column 1 i want to select the one corresponging to the value in column 5 which has greater value

the output must be

2      4      01     0.05     93
3      1      2      0.03     94
1      3       5     0.236    97

Answer 1

[Sven]

A = [1      3     0.9     0.02     94
2      4      01     0.05     93
3      1      2      0.03     94
1      3       5     0.236    97
4      5     10      0.059    69 
2      10     02      0.02     89  ]

% Get only those with col5 above 90
myMask = A(:,5)>90;
B = A(myMask,:)

% Sort everything by col5, descending
sortedB = sortrows(B,-5);

% Get the index of the first unique occurence in col1
[~,uniqueIdxs] = unique(sortedB(:,1));

% Get your final output
finalResult = sortedB(uniqueIdxs,:);

Answer 2

[Srinivas]

help sortrows