WAP-7 - तेरे जैसा यार कहाँ , कहाँ ऐसा याराना , याद करेगी दुनियां तेरा मेरा अफसाना. - Arjun Rai

Guys below mention RAC 50 I cant understand what to do..........? If any one tell me..........
PNR Prediction/Analysis and Trip Diary Registration
IMPORTANT: This is ONLY a Prediction. Predictions can go wrong. Please understand that the final decision and responsibility is yours.
From: Dharmapuri/DPJ
To:...
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Tiruchchirappalli Junction/TPJ
Date of Journey: Sat May 19, 2012 @ 21:58
Class: Sleeper - SL
Status as of: Today (12:41AM)
Passenger 1: RAC 50 (Booking Status: W/L 15,RLGN)
Passenger 2: Waitlist# 1 (Booking Status: W/L 16,RLGN)
Passenger 3: Waitlist# 2 (Booking Status: W/L 17,RLGN)
Passenger 4: Waitlist# 3 (Booking Status: W/L 18,RLGN)
Passenger 5: Waitlist# 4 (Booking Status: W/L 19,RLGN)
Passenger 6: Waitlist# 5 (Booking Status: W/L 20,RLGN)