listcheckbox and SQL base

Hello,
I made a form with ninjaform with a field with 7 listcheckbox (SEM, TEM, Microscopte Optique, Synchrotron, DRX, AFM and Tomograph).
The value of my form is:
– MEB: 1
– MET: 0
– Microscopte Optique: 1
– synchrotron: 0
– DRX: 0
– AFM: 1
– Tomograph: 0

I think this entry from my form is stored in the wp_nf3_field_meta data table.
I can find the label of the 7 listcheckbox but I don’t know how to find the value (0 or 1). Does anyone know how the value is stored in the database?
I thank you in advance.

I copy the table entry:
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