What is the reward for reciting the Quran before Fajr prayer, even if one sometimes lacks concentration?

The reward for reciting the Qur'an is immense; a single letter yields ten good deeds. There is no difference between reciting at night or during the day. However, reciting at night is superior to reciting during the day, especially in the latter half of the night. It is recommended for the reciter to ponder over what he reads.