datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,12 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,12 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,12 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,12 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,12 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,12 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,12 6:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,12 7:30:00,31 ,       0,8.626149,1.789667,2.002832
sgpcmbeC1.c1,1999,12 8:30:00,31 , 0.04472,100.3913, 45.5261,36.08214
sgpcmbeC1.c1,1999,12 9:30:00,31 ,0.168495,  256.97, 120.944,100.9617
sgpcmbeC1.c1,1999,1210:30:00,31 ,0.196106,388.9182,223.1961,155.4197
sgpcmbeC1.c1,1999,1211:30:00,31 ,0.120506,472.3444,283.1088,184.0145
sgpcmbeC1.c1,1999,1212:30:00,31 ,0.170206,504.1425,311.9276,194.0865
sgpcmbeC1.c1,1999,1213:30:00,31 , 0.16243,470.8888, 284.471,184.0478
sgpcmbeC1.c1,1999,1214:30:00,31 ,0.037514,374.8264, 225.285,148.0895
sgpcmbeC1.c1,1999,1215:30:00,31 ,0.030018,241.6228,139.6343,100.3712
sgpcmbeC1.c1,1999,1216:30:00,31 ,       0,89.06914,44.82879,32.79989
sgpcmbeC1.c1,1999,1217:30:00,31 ,       0,3.263811,0.782871,0.962507
sgpcmbeC1.c1,1999,1218:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1219:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1220:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1221:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1222:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1223:30:00,29 ,       0,       0,       0,       0