Seat map
Seats marked in orange on the seat map shown by the France2 coverage would be from what I could determine:
J/CL 2AJK 3K 4AK 7JK TTL 8
Y/CL 19F 20AJ 22D 24D 26BK 28BK || 29F 30D 31DF 32GK 33BJK 34AFGK 35BJ 36K 38DK 39F 40F 41D TTL 30
TTL 38
The last row in Y/CL is 42 (ABJK) on this aircraft/configuration.
Strangely the Gendarmerie considers that the registration number of the doomed aircraft was "FGZPC" i/o FGZCP. This mistake is repeated on all the covers visible in the TV report.