I am trying to get standard ECG by using PhysioNet's ATM with parameters
but I get
It should be something like
How can you get complete standard 12-lead ECG out of Physionet database?
I don't think that all leads are available.
I looked at the Signals combobox for different databases. This combobox seems to be the list of all available leads.
For example, take a look at iafdb (Intracardiac Atrial Fibrillation Database). It will plot you an ECG containing leads II, V1 and aVF and some other leads.
Another example is the EEG database eegmmidb (EEG Motor Movement/Image Dataset) which contains many leads.
Look also at the mimic2wdb/39 (MIMIC II waveform database, version 3 part 9) which contains 4 ECG leads and some other parameters like breath rate.
As another answer suggested, it's a matter of choosing a database that has all of the leads. The St Petersburg INCART 12-lead Arrhythmia Database (incartdb) contains all 12 signals. Here is the directory. The tracings are available by selecting it from the drop-down menu on the page you linked.