datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,03 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,03 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,03 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,03 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,03 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,03 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,03 6:30:00,31 ,       0,21.30649,2.629885,5.065334
sgpcmbeC1.c1,2004,03 7:30:00,31 ,       0,69.67933,29.41156,23.62761
sgpcmbeC1.c1,2004,03 8:30:00,31 ,0.025393,140.4238,43.69474,34.19461
sgpcmbeC1.c1,2004,03 9:30:00,31 ,0.091368,170.2812,44.76367, 39.5988
sgpcmbeC1.c1,2004,0310:30:00,31 ,0.138543, 160.515,43.04036,44.97546
sgpcmbeC1.c1,2004,0311:30:00,31 ,0.148933, 248.579,45.95033,66.06195
sgpcmbeC1.c1,2004,0312:30:00,31 ,0.152714,269.5859,36.15754,69.00247
sgpcmbeC1.c1,2004,0313:30:00,31 , 0.05226,266.8841,56.17063,72.16835
sgpcmbeC1.c1,2004,0314:30:00,31 ,0.105687,229.6209,66.97687,65.75429
sgpcmbeC1.c1,2004,0315:30:00,31 ,0.085179,229.0824,55.45301,49.56381
sgpcmbeC1.c1,2004,0316:30:00,31 ,0.027565,166.1789,50.90083,45.49165
sgpcmbeC1.c1,2004,0317:30:00,31 , 0.01763,63.54833,34.23303,24.52942
sgpcmbeC1.c1,2004,0318:30:00,31 ,       0,23.11171,8.563065,8.024055
sgpcmbeC1.c1,2004,0319:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0320:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0321:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0322:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0323:30:00,29 ,       0,       0,       0,       0