Output: (decimal) Returns properties of an horse in a specific race.
Id of the market.
Id of the runner.
Can return one of the following properties:
'back_prices' = back price at the [index] position. When [index]=1 returns the best back price in that moment.
'back_sizes' = back size amount at the [index] position
'lay_prices' = lay price at the [index] position
'lay_sizes' = lay size amount at the [index] position
'starting_price' = the last recorded price before the market closed or went in play.
'tam' = total amount matched for that in horse in that race.
'min_matched_price' = the minimum price recorded for that horse before the race closed or went in play
'max_matched_price' = the maximum price recorded for that horse before the race closed or went in play
'number' = the number of the horse
'draw' = the draw number of the horse
'weight' = the weight of the horse. In default it is expressed in pounds. You can switch to kilograms from the options.
When the property returns an array (for ex. back_prices), with index you specify the ordinal position of the value you want. If the property returns one single value (for ex. tam), this parameter is unused.