datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,12 0:30:00,18 ,       0,0.465752,0.030933,0.109573
sgpcmbeC1.c1,2001,12 1:30:00,17 ,       0,0.040518,0.003365,0.010076
sgpcmbeC1.c1,2001,12 2:30:00,19 ,       0,0.007742,0.000407,0.001776
sgpcmbeC1.c1,2001,12 3:30:00,22 ,       0,0.165737,0.007534,0.035335
sgpcmbeC1.c1,2001,12 4:30:00,23 ,       0,0.004836, 0.00021,0.001008
sgpcmbeC1.c1,2001,12 5:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 6:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 7:30:00,31 ,0.105221,17.62824,6.473196,4.116114
sgpcmbeC1.c1,2001,12 8:30:00,31 ,4.732484,154.1782,92.83282,45.17455
sgpcmbeC1.c1,2001,12 9:30:00,31 , 11.8842,319.3614,225.3185,92.51055
sgpcmbeC1.c1,2001,1210:30:00,31 , 25.2157,453.6291,338.9283,132.0922
sgpcmbeC1.c1,2001,1211:30:00,31 ,40.10439, 543.819,423.3871,156.0186
sgpcmbeC1.c1,2001,1212:30:00,31 , 42.7689,567.1031,448.6389,165.7467
sgpcmbeC1.c1,2001,1213:30:00,30 ,48.47719,530.7779, 407.164, 163.224
sgpcmbeC1.c1,2001,1214:30:00,31 ,25.25556,435.5329,319.1724,145.8021
sgpcmbeC1.c1,2001,1215:30:00,31 ,23.08769,291.0682,209.3199,91.62761
sgpcmbeC1.c1,2001,1216:30:00,31 ,7.099951,118.1576,79.78375,33.51655
sgpcmbeC1.c1,2001,1217:30:00,31 , 0.00482,6.433078, 3.68291,1.784249
sgpcmbeC1.c1,2001,1218:30:00,30 ,       0,0.955977,0.096599,0.245369
sgpcmbeC1.c1,2001,1219:30:00,28 ,       0,0.502576,0.052836,0.137106
sgpcmbeC1.c1,2001,1220:30:00,26 ,       0,0.494515,0.041693,0.119159
sgpcmbeC1.c1,2001,1221:30:00,23 ,       0,0.258031,0.013182,0.053634
sgpcmbeC1.c1,2001,1222:30:00,22 ,       0, 0.44325,0.026892,0.095641
sgpcmbeC1.c1,2001,1223:30:00,18 ,       0,0.212396,  0.0132,0.049879