From the inception of the network through the early 1990s, a "Statistician" position was used. The statistician kept track of the race scoring, and would come on air to recite the scoring serials and average speeds at regular intervals - typically every 10 laps. The position was demanding, requiring close coordination with the USAC officials downstairs in race control. The radio network crew typically facilitated its own team of unofficial serial scorers to follow the progress of the race. That allowed the scoring reports to be announced on-air faster than the official scorekeepers could produce them from race control. The two-man scoring crew of Bill Fleetemeyer and Bill Lamb was a fixture of the network for many years. During the network's heyday, it was a popular rite for many listeners at home to chart the scoring throughout the race. Similarly, fans listening at the track often relied heavily on radio reports to keep track of the leaders, as scoreboards at the track (the iconic pylon on the main stretch, and the two "carousel" scoreboards in the shortchutes), were not visible to all fans, and furthermore sometimes lagged far behind real time and were not always accurate, or showed incomplete information.