please rewrite this prompt for chatGPT: 'My time series data is saved in a dataframe. The first column represents time in the format of HH:MM:SS, and the second column represents the distance an object has moved during the time between the previous time and this time (a random number between 0 and 500, with half number zeros). The time interval should be around 59 seconds, with a randomly generated increase or decrease of less than 3 seconds. Please generate a sample dataset.'