dataname,value_1,value_2,value_3,value_4,value_5
data_1,nan,nan,98,nan,42
data_2,nan,nan,55,70,77
data_3,31,nan,nan,22,28
data_4,71,nan,84,55,18
data_5,91,nan,82,nan,27
data_6,23,nan,8,56,85
data_7,4,nan,nan,43,45
data_8,6,nan,57,21,75
data_9,nan,nan,nan,nan,nan
data_10,27,nan,39,45,71