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20 TECHNIQUES OF WATER-RESOURCES INVESTIGATIONS . left of a blank column to see if it contains a punch. If it does not. then it is assumed that if the same test is performed on the re- mainder of the fields, they will also he blank. This message is printed when they are not. Make sure all values in fields with an implied decimal point are padded with zeros to the . right. Check to see if last digits are in prop- er columns. Check to see that groupings of simUar parameters such as appear on cards 3, 4, 5. 6, 7, or 8. are listed successively in their proper fields from the left side of the card, with no skipping, Check for stray punches. COLUMN xx SHOULD CONTAIN A DEC- IMAL.. . .. Explanation: The check for deci- mal points in nonblank fields has found a noo- decimal character. Place the decimal in the proper column. A x HAS BEEN PUNCHED INSTEAD OF A y. THE DATA ON THIS CARD WILL BE TREATED AS IF IT WERE ON THE LAT- TER. , . .. Explanation: Column 80 contains a mispunch (x), but through various tests the card is recognized as (y) and will be read as that type for internal checks. Correct the mispunch. THE LAST NUMBER 2 CARD WAS TITLED xxx********xxx..... Explanation: An aid in locating the card in error in the data deck. THERE ARE xx ERRORS IN THIS SET . . . .. Explanation: Gives total number of error messages printed. Note that some err-ors can generate several different mes- sages. Numeric- Check Messages Most of these internal data- check mes- sages are self- explanatory and require no further comment or suggested user action. DELTA-W SHOULD BE GREATER THAN 7.ERO.. '" Explanation: DELT A- W is the printout form of t!!.W. WMAX SHOULD BE GREATER THAN WO. . . .. Explanation: WMAX and WO repre- sent the printout forms of Vl and W . max 0 respectively. DELTA-W SHOULD BE GREATER THAN OR EQUAL TO (WMAX-WOlf24. NO. STA SHOULD CONTAIN AN INTE- GER BETWEEN 3 AND 25 INCLUSIVE. NO. SA SHOULD CONTAIN AN INTEGER BETWEEN 1 AND 4 INCLUSIVE. C SHOULD CONTAIN AN INTEGER BE- TWEEN 0 AND 2 INCLUSIVE. LW SHOULD BE GREATER THAN ZERO FOR OPTIONS CeO. OR C c 2. THE FIRST SUBAREA IS NOT 1. WMAX SHOULD BE LESS THAN OR EQUAL TO THE FIRST GROUND ELE- VATION. THE FINAL SUBAREA SHOULD BE EQUAL TO NO. SA. SUBAREAS NOT IN INCREASING ORDER. STATION DISTANCES ARE NOT IN- CREASiNG.." Explanation: Appears if stations decrease. but not if they are the same, as in a vertical. WMAX SHOULD BE LESS THAN OR EQUAL TO THE LAST GROUND ELE- VATION, Nl NOT GREATER THAN 0 IN SET x, N3 NOT GREATER THAN 0 IN SET x. UNLESS THERE WAS A PREVIOUS ERROR IN NO. SA. THE NUMBER OF SUBAREAS IS LESS THAN THE EXPECT- ED NUMBER. B NOT LESS THAN A IN SET x.... . Explanation: This refers to elevations band a on card 4. NO. SA IS NOT USABLE FOR INTERNAL CHECK. SO DATA ON THIS CARD CANNOT BE READ PROPERLy..... Explanation: Because an internal check of data cannot be made, spurious error messages may follow. FIRST TAILWATER ELEVATION MUST BE GREATER THAN ZERO. TAILWATER ELEVATION x IS NOT IN INCREASING ORDER. TAILWATER ELEVATION x IS NOT GREATER THAN OR EQUAL TO O. 04*D + BASE ELEVATION.