datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,11 0:30:00,25 ,       0,0.482429,0.021353,0.096605
sgpcmbeC1.c1,2007,11 1:30:00,28 ,       0,0.949707,0.036841,0.179571
sgpcmbeC1.c1,2007,11 2:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,11 3:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,11 4:30:00,25 ,       0,1.488468,0.059539,0.297694
sgpcmbeC1.c1,2007,11 5:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,11 6:30:00,30 ,       0,1.813422,0.277192,0.536711
sgpcmbeC1.c1,2007,11 7:30:00,30 ,0.437009,47.86512,30.09675, 12.4764
sgpcmbeC1.c1,2007,11 8:30:00,30 ,7.667611,67.09193,45.67649,14.46752
sgpcmbeC1.c1,2007,11 9:30:00,30 ,9.296972,102.4503, 48.7647,17.72349
sgpcmbeC1.c1,2007,1110:30:00,30 , 13.3875,101.8193, 42.0397,20.52232
sgpcmbeC1.c1,2007,1111:30:00,30 ,11.90028,180.4385,42.67908,41.52222
sgpcmbeC1.c1,2007,1112:30:00,30 ,4.351226, 148.579,35.25214, 44.9826
sgpcmbeC1.c1,2007,1113:30:00,30 ,20.06621,115.3019,40.23249, 28.2711
sgpcmbeC1.c1,2007,1114:30:00,30 ,23.85596,110.0732,44.02997,16.70761
sgpcmbeC1.c1,2007,1115:30:00,30 ,7.733686,84.93736,  49.197,12.72012
sgpcmbeC1.c1,2007,1116:30:00,30 ,5.514917,55.03191,41.36965,14.32771
sgpcmbeC1.c1,2007,1117:30:00,30 ,       0,19.69337,8.723446, 5.15224
sgpcmbeC1.c1,2007,1118:30:00,30 ,       0,1.468551,0.172427,0.394787
sgpcmbeC1.c1,2007,1119:30:00,30 ,       0,1.110464,0.112689, 0.30903
sgpcmbeC1.c1,2007,1120:30:00,28 ,       0,1.228575,0.068796,0.262727
sgpcmbeC1.c1,2007,1121:30:00,28 ,       0,1.327917,0.138371,0.364326
sgpcmbeC1.c1,2007,1122:30:00,25 ,       0, 0.03439,0.001376,0.006878
sgpcmbeC1.c1,2007,1123:30:00,27 ,       0,0.835291,0.048276,0.181231