RINEX OBS parsing problem?

Question

satellite navigation

There are 7 values ​​in the header, but I have 9 of them in the file:

7    L1    L2    C1    P2    P1    S1    S2            # / TYPES OF OBSERV

16  2 24  0 52 15.0000000  0 1R09                     
 114945096.765 7  89401793.977 6  21540656.227    21540659.250    21540654.770
        45.200          37.300

Answer 1

Interestingly, integer values ​​like "7" and "6" are very similar to what should be contained in L1 and L2?