Question: what is the difference between q1 and q2 journals?
Answer: There are four quartiles: Q1, Q2, Q3 and Q4. Q1 is occupied by the top 25% of journals in the list; Q2 is occupied by journals in the 25 to 50% group; Q3 is occupied by journals in the 50 to 75% group and Q4 is occupied by journals in the 75 to 100% group.