datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,02 0:30:00,11 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,02 1:30:00,12 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,02 2:30:00,12 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,02 3:30:00,11 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,02 4:30:00,13 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,02 5:30:00,16 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,02 6:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,02 7:30:00,18 ,8.433004,51.31123,16.68786,9.715035
sgpcmbeC1.c1,2002,02 8:30:00,17 ,6.105618,47.18684,19.93598,13.69706
sgpcmbeC1.c1,2002,02 9:30:00,18 ,1.289668,50.73184,18.96323,16.12331
sgpcmbeC1.c1,2002,0210:30:00,18 , 0.80699,83.56845,26.23985, 23.7736
sgpcmbeC1.c1,2002,0211:30:00,18 ,0.475728,100.0957,37.41706,35.03531
sgpcmbeC1.c1,2002,0212:30:00,18 ,0.656186,85.25983,24.62297,25.87545
sgpcmbeC1.c1,2002,0213:30:00,18 ,0.151341,102.3493,27.16644,29.89478
sgpcmbeC1.c1,2002,0214:30:00,18 ,0.372078,67.61903,18.59769,19.40487
sgpcmbeC1.c1,2002,0215:30:00,18 ,0.806803,69.50326,21.42997,20.69237
sgpcmbeC1.c1,2002,0216:30:00,18 ,3.895939,50.52902,16.72291,15.80788
sgpcmbeC1.c1,2002,0217:30:00,19 ,8.514818,49.14107,16.85915,9.569066
sgpcmbeC1.c1,2002,0218:30:00,19 ,       0,10.66292,4.530159,2.884435
sgpcmbeC1.c1,2002,0219:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0220:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0221:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0222:30:00,16 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0223:30:00,16 ,       0,       0,       0,       0