datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,12 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,12 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,12 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,12 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,12 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,12 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,12 6:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,12 7:30:00,31 ,       0,11.49303,4.259356,2.714622
sgpcmbeC1.c1,2003,12 8:30:00,31 ,15.89132,73.70177,41.59173,16.28771
sgpcmbeC1.c1,2003,12 9:30:00,31 ,28.55146,185.1837,82.18697,44.32484
sgpcmbeC1.c1,2003,1210:30:00,31 , 44.3584,291.6646,106.8776,70.01321
sgpcmbeC1.c1,2003,1211:30:00,31 ,27.22601,416.6865,126.8845,93.93003
sgpcmbeC1.c1,2003,1212:30:00,30 ,31.27551,264.3565,119.8637,75.74482
sgpcmbeC1.c1,2003,1213:30:00,31 ,19.46863, 415.811,122.3421, 84.6431
sgpcmbeC1.c1,2003,1214:30:00,31 ,27.39462,309.0421,101.3844,67.39669
sgpcmbeC1.c1,2003,1215:30:00,31 ,19.09232,147.5249,71.26958,34.20791
sgpcmbeC1.c1,2003,1216:30:00,31 , 2.28814,65.25237,33.18402,14.51187
sgpcmbeC1.c1,2003,1217:30:00,31 ,       0,4.325922, 1.69174,1.142166
sgpcmbeC1.c1,2003,1218:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,1219:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,1220:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,1221:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,1222:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,1223:30:00,29 ,       0,       0,       0,       0