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<br />HEC-l INPUT DESCRIPTION <br />JOB INITIALIZATION (I Cards) <br /> <br />2.3 IN CARD - TIME INTERVAL FOR INPUT DATA <br /> <br />The IN card is used to define time interval and starting time for <br />time series data which are read into the program on PC, PI, QQ, QI, QS, <br />MO, MS, MT and MW cards. <br /> <br />FIELD <br /> <br />VARIABLE <br /> <br />VALUE <br /> <br />DESCRIPTION <br /> <br />. <br /> <br />Col 1+2 10 <br /> <br />IN <br /> <br />Card identification. <br /> <br />1 JXMIN <br /> <br />+ <br /> <br />Integer number of minutes in tabulation <br />interval. <br /> <br />2 JXDATE <br /> <br />+ <br /> <br />Day, month, year at beginning of first tme <br />interval (e.g., March 17, 1978 is input as <br />17MAR78). <br /> <br />3 JXTlME <br /> <br />+ <br /> <br />Hour and minute at the beginning of the <br />first time interval (e.g. 4:45 pm is input <br />as 1645). <br /> <br />If an IN card is not used the time interval and starting time for all time <br />series will be the values specified on the IT card. <br /> <br />IN cards may appear anywhere in the input <br />interval and starting time will be used for <br />these values are reset by reading new values on <br /> <br />stream. The <br />all time series <br />an IN card. <br /> <br />same time <br />data until <br /> <br />When time series data are read from PC, PI, QQ, QS, QP, MO, MS, MT, <br />or MW cards, values to be used by the program are computed using linear <br />interpolation to match the tabulation interval specified on the IT card. <br /> <br />For times preceeding or following the given ordinates, the first or <br />last value is repeated as necessary to define NQ (IT-4) ordinates. <br /> <br />, <br /> <br />.. <br /> <br />Page 10 <br />