"Event Id"|"Underlying"|"Symbol"|"Exchange"|"Type"|"Start Datetime"|"End Datetime"|"Average Bid Size"|"Average Ask Size"|"Average Spread" "201705223300111"|"PBYI"|"PBYI_170616P35."|"NYSA"|"Straddle"|"20170522 10:09:32"|"20170522 10:09:32"|5|5|4.36 "201705223300112"|"PBYI"|"PBYI_170616P35."|"NYSA"|"Limit"|"20170522 10:09:32"|"20170522 10:09:34"|2|2|4.78 "201705223300130"|"PBYI"|"PBYI_170602C55."|"NYSA"|"Straddle"|"20170522 10:21:52"|"20170522 10:21:52"|24|10|3.14 "201705223300131"|"PBYI"|"PBYI_170602C55."|"NYSA"|"Straddle"|"20170522 10:21:52"|"20170522 10:21:53"|13|10|3.48 "201705223300149"|"PBYI"|"PBYI_170602C50."|"NYSA"|"Limit"|"20170522 10:21:56"|"20170522 10:22:11"|20|10|4.54 "201705230200001"|"BG"|"BG_170721C60."|"NYSA"|"Straddle"|"20170523 13:12:35"|"20170523 13:12:36"|1|18|3.96 "201705230200001"|"BG"|"BG_170721C70."|"NYSA"|"Straddle"|"20170523 13:12:35"|"20170523 13:12:36"|13|7|2.16 "201705230200001"|"BG"|"BG_170721C75."|"NYSA"|"Straddle"|"20170523 13:12:35"|"20170523 13:12:36"|3|28|3.85