The H-NMR is for trans-stilbene. The peaks ~4.7-4.8 should correspond to the protons of the alkene. If this is so, then why does the integral value not add to one? The peaks at this chemical shift seem off. Please help me to justify why these peaks correspond to that proton despite the integration being off. If there is a possible error then please indicate that.

5.0 4.9 4.8 chemical shift (ppm) 4.7 4.6 7.4 7.3 7.2 7.1 7.0 6.9 6.8 chemical shift (ppm) 14 13 12 11 10 chemical shift (ppm) Fero 19691 V9669 89669 $690 0920 S060 EZ6O 72145 12164