Result of 24th December Kolkata test

I have taken the test on 24th December, 2017 at Kolkata. Today I checked my elitmus dashboard and it shows that pH score is out. My score is very low. I attempted questions only those I was sure enough to answer. I don’t know how it is so low. If there is 5 marks negative marking, my score should be in integer, but it is in fraction. And moreover, one of my friend has also taken the exam on the same date, but his pH score is not published. If there is the concept of percentile then how is this possible…? Please answer.