datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,02 0:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,02 1:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,02 2:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,02 3:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,02 4:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,02 5:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,02 6:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,02 7:30:00,29 ,       0,31.28975,7.213571,8.988425
sgpcmbeC1.c1,2004,02 8:30:00,29 ,0.001439,61.65405,26.39325,23.30497
sgpcmbeC1.c1,2004,02 9:30:00,29 ,0.008553,  128.96,35.81124,32.16025
sgpcmbeC1.c1,2004,0210:30:00,29 ,       0, 169.371,46.10969,45.42572
sgpcmbeC1.c1,2004,0211:30:00,29 ,       0,213.6451,47.62044,59.26248
sgpcmbeC1.c1,2004,0212:30:00,29 ,0.025187,242.6066,50.06111, 69.2039
sgpcmbeC1.c1,2004,0213:30:00,29 ,       0,244.1687,58.98123,68.17358
sgpcmbeC1.c1,2004,0214:30:00,29 ,0.087481,233.2165,64.76764,66.71238
sgpcmbeC1.c1,2004,0215:30:00,29 ,0.076492,188.3921, 57.5623, 42.9187
sgpcmbeC1.c1,2004,0216:30:00,29 ,       0,122.8766,36.76286,28.28457
sgpcmbeC1.c1,2004,0217:30:00,29 ,       0,54.64182,24.05852,19.34641
sgpcmbeC1.c1,2004,0218:30:00,29 ,       0,6.864994,0.656816, 1.42947
sgpcmbeC1.c1,2004,0219:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0220:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0221:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0222:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0223:30:00,27 ,       0,       0,       0,       0