datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,02 0:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,1997,02 1:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,1997,02 2:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,1997,02 3:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,1997,02 4:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,1997,02 5:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,1997,02 6:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,1997,02 7:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,1997,02 8:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,1997,02 9:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,1997,0210:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,1997,0211:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,1997,0212:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,1997,0213:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,1997,0214:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,1997,0215:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,1997,0216:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,1997,0217:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,1997,0218:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,1997,0219:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,1997,0220:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,1997,0221:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,1997,0222:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,1997,0223:30:00,0 ,       .,       .,       .,       .