Poor EEG data quality using LSL and matlab from OPENBCI 21 channel cap

I am trying to collect data from OPENBCI 21 channel cap. I have put the GEL in six channels only (FPZ, GND, REF, FP1, FP2, FP3, FP4, FP8, FP7) as I had some issues in data collection therefore just to verify if everything is OK.

My MATLAB code to collect data using LSL is given below:

disp('Loading the library...');

lib = lsl_loadlib();

% resolve a stream...

disp('Resolving an EEG stream...');

result = {};

while isempty(result)

result = lsl_resolve_byprop(lib,'type','EEG');

end

% create a new inlet

disp('Opening an inlet...');

inlet = lsl_inlet(result{1});

disp('Now receiving data...');

x = 1;

eegstarttime = clock;

tic

while toc<60 % get data from the inlet while toc>0 && toc<60

[chdata(x,:),tsdata(x,1)] = inlet.pull_sample();

x = x + 1;

end

end

My data set is also attached ...Can anyone please guide if this data is OK while no filter is applied and only 6 channel are wet.