datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,06 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,06 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,06 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,06 3:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,06 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,06 5:30:00,30 ,       0,32.57125,12.91681,6.885635
sgpcmbeC1.c1,2007,06 6:30:00,30 ,1.988648, 41.7077,21.74658,11.41065
sgpcmbeC1.c1,2007,06 7:30:00,30 ,3.244446,70.94516,29.37999,17.52083
sgpcmbeC1.c1,2007,06 8:30:00,30 ,2.775169,116.0637,40.15494,26.66254
sgpcmbeC1.c1,2007,06 9:30:00,30 ,1.398087,104.4248,49.52997,31.19226
sgpcmbeC1.c1,2007,0610:30:00,29 ,1.495324,167.3773,51.60956,40.57324
sgpcmbeC1.c1,2007,0611:30:00,29 ,1.642532,129.0825,49.85222,34.66618
sgpcmbeC1.c1,2007,0612:30:00,29 ,1.745303,165.8592,44.84946,38.32185
sgpcmbeC1.c1,2007,0613:30:00,28 ,1.188719,162.8828, 57.1737,40.92902
sgpcmbeC1.c1,2007,0614:30:00,29 ,2.169887,108.3522,45.36275,27.73849
sgpcmbeC1.c1,2007,0615:30:00,29 ,3.594491,127.7418,51.91177, 35.3371
sgpcmbeC1.c1,2007,0616:30:00,30 ,3.285869,97.31565,42.31498,  23.293
sgpcmbeC1.c1,2007,0617:30:00,30 ,2.757586,98.05782, 27.5217,23.37137
sgpcmbeC1.c1,2007,0618:30:00,30 ,       0,57.73999,20.79573,13.31251
sgpcmbeC1.c1,2007,0619:30:00,30 ,       0,22.08011,12.59377,6.445289
sgpcmbeC1.c1,2007,0620:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0621:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0622:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0623:30:00,29 ,       0,       0,       0,       0