The above Table 1 sets the integration time thus the full scale count. The maximum count is 16384.
Table 2 sets the resolution of each LSB, with code '00' as the highest resolution.
For example, with ALSTIM set to '00' and ALSPGA set to '00' the full scale reading will be 512 (16384 x 0.03125) Lux with each count representing 0.03125 Lux.
Another example, with ALSTIM set to '00' and ALSPGA set to '11' the full scale reading will be 65535 ((16384 x 4) -1)) Lux with each count representing 4 Lux.
The Ambient Light Saturation Level is shown as 65535 Lux in the Electrical Characteristics table on Page 2 of the data sheet.