datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,02 0:30:00,11 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,02 1:30:00,12 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,02 2:30:00,12 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,02 3:30:00,11 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,02 4:30:00,13 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,02 5:30:00,16 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,02 6:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,02 7:30:00,18 , 1.20992,19.17775,8.247317,5.314895
sgpcmbeC1.c1,2002,02 8:30:00,18 , 12.1766,61.71531,39.31423,15.03127
sgpcmbeC1.c1,2002,02 9:30:00,18 ,25.80536, 100.728,73.95274, 22.1976
sgpcmbeC1.c1,2002,0210:30:00,18 ,41.89337,129.5895,  103.44,26.51553
sgpcmbeC1.c1,2002,0211:30:00,18 ,78.31798,146.9918,124.6307,20.31958
sgpcmbeC1.c1,2002,0212:30:00,18 ,80.34877,154.5217,128.5277,23.38907
sgpcmbeC1.c1,2002,0213:30:00,18 ,70.79963,152.5443,124.5191,24.88674
sgpcmbeC1.c1,2002,0214:30:00,18 ,75.36244,139.2245,121.3227,14.83959
sgpcmbeC1.c1,2002,0215:30:00,18 ,47.41005,115.0284,94.88554,18.10952
sgpcmbeC1.c1,2002,0216:30:00,19 ,8.882499,88.94212,59.14549,21.00977
sgpcmbeC1.c1,2002,0217:30:00,19 ,3.703569,35.24993,21.29859,9.784961
sgpcmbeC1.c1,2002,0218:30:00,19 ,       0,2.239682,0.634665,0.742208
sgpcmbeC1.c1,2002,0219:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0220:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0221:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0222:30:00,16 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0223:30:00,16 ,       0,0.002745,0.000172,0.000686