datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,12 0:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,12 1:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,12 2:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,12 3:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,12 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,12 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,12 6:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,12 7:30:00,31 ,       0,14.51119,2.226202,3.649113
sgpcmbeC1.c1,2002,12 8:30:00,31 ,       0,50.13363,20.48265,19.96458
sgpcmbeC1.c1,2002,12 9:30:00,28 ,0.074073,97.23402,30.02452,27.26441
sgpcmbeC1.c1,2002,1210:30:00,27 ,0.111602,114.0667,22.92316,25.82431
sgpcmbeC1.c1,2002,1211:30:00,27 ,0.139678,191.9732,28.44649,43.33839
sgpcmbeC1.c1,2002,1212:30:00,27 ,0.035997,123.1183,17.25722,29.93534
sgpcmbeC1.c1,2002,1213:30:00,28 ,0.020502,135.6503,23.85111,34.07895
sgpcmbeC1.c1,2002,1214:30:00,28 ,0.005029,77.71917,22.63818,20.70593
sgpcmbeC1.c1,2002,1215:30:00,30 ,0.000803, 55.0707,21.70317,21.31594
sgpcmbeC1.c1,2002,1216:30:00,31 ,       0,45.35485,14.40587, 17.9202
sgpcmbeC1.c1,2002,1217:30:00,31 ,       0,6.570645,1.446845,1.652884
sgpcmbeC1.c1,2002,1218:30:00,31 ,       0, 5.93914,0.248534,1.102652
sgpcmbeC1.c1,2002,1219:30:00,31 ,       0,3.089971,0.099676,0.554975
sgpcmbeC1.c1,2002,1220:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,1221:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,1222:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,1223:30:00,27 ,       0,       0,       0,       0