Stock Price Span

You are given a list of daily stock prices. Implement a function to calculate the span of stock prices for each day. The span is defined as the maximum number of consecutive days (up to the current day) where the stock price was less than or equal to the current day's price. Return a list of spans as space-separated integers. Example: Input: '100 80 60 70 60 75 85', Output: '1 1 1 2 1 4 6'.