datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,01 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,01 1:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,01 2:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,01 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,01 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,01 5:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,01 6:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,01 7:30:00,31 ,       0,8.219498,2.664695,2.158486
sgpcmbeC1.c1,1999,01 8:30:00,31 ,3.256425,74.61086,36.65002,19.68583
sgpcmbeC1.c1,1999,01 9:30:00,31 ,12.00435,180.0045,78.36233,41.64849
sgpcmbeC1.c1,1999,0110:30:00,31 ,16.22992,275.2464,129.1421,73.35952
sgpcmbeC1.c1,1999,0111:30:00,31 ,18.98207,345.4457,169.0787, 99.5311
sgpcmbeC1.c1,1999,0112:30:00,31 ,26.87736,364.4142,159.6194,86.64864
sgpcmbeC1.c1,1999,0113:30:00,31 , 31.0728,304.1372,144.5748,79.50719
sgpcmbeC1.c1,1999,0114:30:00,31 ,31.40277, 266.351,123.1147,73.21328
sgpcmbeC1.c1,1999,0115:30:00,31 ,21.57423,222.4386,91.37189, 58.5164
sgpcmbeC1.c1,1999,0116:30:00,31 ,6.762512,113.3049,51.02789, 29.1126
sgpcmbeC1.c1,1999,0117:30:00,31 ,       0, 27.1378,10.30747,6.778092
sgpcmbeC1.c1,1999,0118:30:00,31 ,       0,0.123743,0.003992,0.022225
sgpcmbeC1.c1,1999,0119:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0120:30:00,31 ,       0,0.055401,0.001787, 0.00995
sgpcmbeC1.c1,1999,0121:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0122:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0123:30:00,28 ,       0,       0,       0,       0