So let's see, percentage of data below 1, negative 1. OK, let's draw our standard normal distribution. So a standard normal distribution is one where the mean is, sorry, that's due to the standard deviation, is one where the mean, mu for mean, is where the mean is equal to 0 and the standard deviation is equal to 1. So let me draw that standard normal distribution. So let me draw the axis right like that. Let me see if I can draw a nice looking bell curve. There's the bell curve right there.