datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,12 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 2:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 6:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 7:30:00,29 ,0.996446,19.11829,7.694675,5.470665
sgpcmbeC1.c1,1997,12 8:30:00,29 ,4.136472,54.99785,32.51746,18.71502
sgpcmbeC1.c1,1997,12 9:30:00,30 ,3.663611,98.72216,37.49191,25.12914
sgpcmbeC1.c1,1997,1210:30:00,30 ,7.263867,68.89342, 29.8969,15.76404
sgpcmbeC1.c1,1997,1211:30:00,29 ,9.212358,174.9913,28.86268,31.42349
sgpcmbeC1.c1,1997,1212:30:00,29 ,2.424605,146.3728,24.99371,30.32497
sgpcmbeC1.c1,1997,1213:30:00,29 ,5.327061,150.7337,36.44695,  39.857
sgpcmbeC1.c1,1997,1214:30:00,29 ,3.896815,145.1944, 38.3679,28.67436
sgpcmbeC1.c1,1997,1215:30:00,29 ,3.057303,100.2794,39.14646,26.36681
sgpcmbeC1.c1,1997,1216:30:00,29 ,2.790901,62.57769,28.20988,19.76911
sgpcmbeC1.c1,1997,1217:30:00,29 ,       0,12.21605,4.810317,3.676173
sgpcmbeC1.c1,1997,1218:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1219:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1220:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1221:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1222:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1223:30:00,30 ,       0,       0,       0,       0