datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,12 0:30:00,30 ,       0,0.024651,0.000822,0.004501
sgpcmbeC1.c1,1999,12 1:30:00,29 ,       0,0.002568,0.000089,0.000477
sgpcmbeC1.c1,1999,12 2:30:00,30 ,       0,0.004083,0.000136,0.000745
sgpcmbeC1.c1,1999,12 3:30:00,29 ,       0,0.279331,0.009632, 0.05187
sgpcmbeC1.c1,1999,12 4:30:00,30 ,       0,0.083994, 0.00309,0.015363
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 ,       0,5.416957,1.594458,1.375713
sgpcmbeC1.c1,1999,12 8:30:00,31 ,2.089733,41.63079,21.04346,9.981949
sgpcmbeC1.c1,1999,12 9:30:00,31 ,3.697182,68.66013,45.20998,20.80326
sgpcmbeC1.c1,1999,1210:30:00,31 ,6.430467,93.72933,69.43343,28.12794
sgpcmbeC1.c1,1999,1211:30:00,31 ,5.256867,108.9545,83.79229,31.63481
sgpcmbeC1.c1,1999,1212:30:00,31 ,  2.4427, 114.428,86.07677,35.66334
sgpcmbeC1.c1,1999,1213:30:00,31 , 2.81628,109.2657,81.60487,34.59197
sgpcmbeC1.c1,1999,1214:30:00,31 ,4.267278,93.15762,67.48262,29.77705
sgpcmbeC1.c1,1999,1215:30:00,31 ,3.846347,69.66407,46.04178,22.44187
sgpcmbeC1.c1,1999,1216:30:00,31 ,0.130654,35.55087,18.58535,10.06802
sgpcmbeC1.c1,1999,1217:30:00,31 ,       0,1.631825,0.511117,0.525247
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, 0.00249,0.000174,0.000568