datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,11 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,11 1:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,11 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,11 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,11 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,11 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,11 6:30:00,30 ,       0,1.053569,0.130515,  0.2587
sgpcmbeC1.c1,1999,11 7:30:00,30 , 1.05908,34.50319,19.09085,7.954001
sgpcmbeC1.c1,1999,11 8:30:00,30 ,22.50192,108.6638,52.60484,14.45718
sgpcmbeC1.c1,1999,11 9:30:00,30 ,43.68365,179.0088,73.39723,27.12289
sgpcmbeC1.c1,1999,1110:30:00,30 ,55.68618,240.0295,89.51396,40.21259
sgpcmbeC1.c1,1999,1111:30:00,30 , 32.8745,268.6036,99.00208, 56.6075
sgpcmbeC1.c1,1999,1112:30:00,30 ,34.04733,303.3068,101.3033,61.92636
sgpcmbeC1.c1,1999,1113:30:00,30 ,36.65345,247.6555, 99.6183,57.18984
sgpcmbeC1.c1,1999,1114:30:00,30 ,50.67472,244.0145, 92.7636,49.01116
sgpcmbeC1.c1,1999,1115:30:00,30 ,14.28778, 172.116,74.73761,37.48743
sgpcmbeC1.c1,1999,1116:30:00,30 ,9.927168, 88.6981,42.93055,16.20652
sgpcmbeC1.c1,1999,1117:30:00,30 ,0.179838,12.10893,5.474026, 2.99151
sgpcmbeC1.c1,1999,1118:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1119:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1120:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1121:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1122:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1123:30:00,29 ,       0,       0,       0,       0