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 ,       0,12.63285,5.940111,  2.9199
sgpcmbeC1.c1,2003,12 8:30:00,31 ,5.538021,34.46228,14.70789,9.634456
sgpcmbeC1.c1,2003,12 9:30:00,31 ,2.589462,67.69788,14.21676,14.96416
sgpcmbeC1.c1,2003,1210:30:00,31 ,  0.8114,43.33002,16.65414,13.27953
sgpcmbeC1.c1,2003,1211:30:00,31 ,0.309761,48.50111,15.78885,15.81324
sgpcmbeC1.c1,2003,1212:30:00,30 ,0.193865,56.32697,17.03112,15.44732
sgpcmbeC1.c1,2003,1213:30:00,31 ,0.574761, 56.7005,18.06191,16.69326
sgpcmbeC1.c1,2003,1214:30:00,31 , 0.92469,47.17118,15.30999,13.93959
sgpcmbeC1.c1,2003,1215:30:00,31 ,1.783914,52.34588,14.71182,14.46224
sgpcmbeC1.c1,2003,1216:30:00,31 ,2.267668,31.05952,12.30633,6.786929
sgpcmbeC1.c1,2003,1217:30:00,31 ,       0,7.146574, 3.22079,1.785061
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