| ticker_at | string | Underlying asset type |
| ticker_ts | string | Underlying ticker source |
| ticker_tk | string | Underlying ticker |
| timestamp | timestamp | Timestamp of last update to record - UTC |
| prtNumber | bigint | Unique print set identifier, will increment but not guaranteed to be sequential |
| securityID | bigint | SpiderRock security ID |
| tradingDate | date | Trading date |
| tradingSession | string | Trading session ('None','RegularMkt','PreMkt','PostMkt','PostMktETF','NextDay') |
| prtExch | string | Exchange where trade/print took place |
| prtSize | float | Number of shares in the trade |
| prtPrice | float | Print price |
| prtClusterNum | int | Incremental print cluster counter |
| prtClusterSize | float | Cumulative size of prints in this sequence |
| prtVolume | double | Total volume as of the print time |
| mrkPrice | float | Market price at print time |
| prtType | int | Print type code |
| prtCond1 | int | Print condition 1 |
| prtCond2 | int | Print condition 2 |
| prtCond3 | int | Print condition 3 |
| prtCond4 | int | Print condition 4 |
| prtSide | string | SR-inferred print side ('None','Mid','Bid','Ask') |
| prtTimestamp | bigint | Exchange high precision timestamp in Unix epoch (if available) |
| netTimestamp | bigint | SR Gateway timestamp in Unix epoch |
| bidPrice | float | NBBO bid at print time |
| askPrice | float | NBBO ask at print time |
| bidSize | int | NBBO cumulative bid size at print time |
| askSize | int | NBBO cumulative ask size at print time |
| bidPrice2 | float | Second level NBBO bid price |
| askPrice2 | float | Second level NBBO ask price |
| bidSize2 | int | Cumulative size on the second level bid price |
| askSize2 | int | Cumulative size on the second level ask price |
| prtProbability | float | SR probability that buying prtSize shares @ prtPrice will have positive pnl 1 minute after time of print |
| bidPriceM1 | float | NBBO bid 1 minute after print time |
| askPriceM1 | float | NBBO ask 1 minute after print time |
| prtPriceM1 | float | Price 1 minute after print time |
| pnlM1 | float | Delta neutral pnl 1 minute after print time |
| pnlM1Err | string | Internal use |
| bidPriceM10 | float | NBBO bid 10 minutes after print time |
| askPriceM10 | float | NBBO ask 10 minutes after print time |
| prtPriceM10 | float | Price 10 minutes after print time |
| pnlM10 | float | Delta neutral pnl 10 minutes after print time |
| pnlM10Err | string | Internal use |