I have response data of 12 participants. Each participant's response was recorded in a csv file. Each of the participants was tested under 4 conditions (A, B, C, D). Within each condition, participants provided their response (r) for 6 different stimuli. Therefore, for each participant I have 24 observations. Meaning each condition has 72 observations. I would like to visualize how individual participants rated (r) for each condition over 6 stimuli. In a nutshell, my axis should have no. of participants as 12 and y axis the response variable. I tried using the ggplot function but I am stuck using x variable.