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 ,       0,10.64798,4.046538,2.730001
sgpcmbeC1.c1,2002,12 8:30:00,31 ,0.978228,83.76331,43.57903,20.71623
sgpcmbeC1.c1,2002,12 9:30:00,28 ,1.794745,206.2065,91.38357,51.65909
sgpcmbeC1.c1,2002,1210:30:00,27 ,50.15022,283.2002,122.3217,69.28144
sgpcmbeC1.c1,2002,1211:30:00,27 , 55.1114,329.7834,153.4132,93.28547
sgpcmbeC1.c1,2002,1212:30:00,27 ,39.06973,432.8938,166.3296,115.6659
sgpcmbeC1.c1,2002,1213:30:00,28 ,36.31234,420.4368,172.3592,115.4582
sgpcmbeC1.c1,2002,1214:30:00,28 ,36.50215,325.4045,142.3406,93.24719
sgpcmbeC1.c1,2002,1215:30:00,30 ,13.17408,232.2907,99.33368,59.28276
sgpcmbeC1.c1,2002,1216:30:00,31 ,6.364494,106.4743,44.40265,26.08541
sgpcmbeC1.c1,2002,1217:30:00,31 ,       0,9.383399,2.550038,2.243056
sgpcmbeC1.c1,2002,1218:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,1219:30:00,31 ,       0,       0,       0,       0
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