Screenshot at this point is a bit late, not that it really bothered me, if it did i would've taken screenshot and xfired him. Just weird how sometimes u get higher ppm than what should give u +-0.00 yet u get a minus (was -0.07 in this case which is quite high - when ppm for the session was 2.05 higher than what expected for +-0.00) and sometimes u get a + with lower ppm than what is needed for +-0.00 x_x