datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,12 0:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 1:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 2:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 3:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 4:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 5:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 6:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 7:30:00,31 ,       0,17.39836,6.202635,4.161542
sgpcmbeC1.c1,2001,12 8:30:00,31 ,3.908989,154.1782,92.79714,45.24587
sgpcmbeC1.c1,2001,12 9:30:00,31 , 11.8842,319.3614,225.3185,92.51055
sgpcmbeC1.c1,2001,1210:30:00,31 , 25.2157,453.6291,338.9283,132.0922
sgpcmbeC1.c1,2001,1211:30:00,31 ,40.10439, 543.819,423.3871,156.0186
sgpcmbeC1.c1,2001,1212:30:00,31 , 42.7689,567.1031,448.6389,165.7467
sgpcmbeC1.c1,2001,1213:30:00,30 ,48.47719,530.7779, 407.164, 163.224
sgpcmbeC1.c1,2001,1214:30:00,31 , 25.0672,435.5329,319.1663,145.8147
sgpcmbeC1.c1,2001,1215:30:00,31 ,23.08769,291.0682,209.3161,91.63505
sgpcmbeC1.c1,2001,1216:30:00,31 ,6.859716,118.1576,79.76054,33.56777
sgpcmbeC1.c1,2001,1217:30:00,31 ,       0,6.218205,3.368376,1.755385
sgpcmbeC1.c1,2001,1218:30:00,30 ,       0, 0.10384,0.003461,0.018959
sgpcmbeC1.c1,2001,1219:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,1220:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,1221:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,1222:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,1223:30:00,18 ,       0,       0,       0,       0