datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,03 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,03 1:30:00,31 ,       0,0.128469,0.004144,0.023074
sgpcmbeC1.c1,2003,03 2:30:00,31 ,       0,0.123156,0.003973, 0.02212
sgpcmbeC1.c1,2003,03 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,03 4:30:00,31 ,       0,0.102802,0.003316,0.018464
sgpcmbeC1.c1,2003,03 5:30:00,31 ,       0,0.016704,0.000539,   0.003
sgpcmbeC1.c1,2003,03 6:30:00,31 ,       0, 10.0637,2.025361,3.024834
sgpcmbeC1.c1,2003,03 7:30:00,31 ,2.001972,17.77173,8.656967,5.189837
sgpcmbeC1.c1,2003,03 8:30:00,31 ,1.141801,30.92927,12.66628,7.556268
sgpcmbeC1.c1,2003,03 9:30:00,31 ,1.033057,40.41799, 11.8133,7.846736
sgpcmbeC1.c1,2003,0310:30:00,31 ,3.888695,49.47141,14.04878,10.91964
sgpcmbeC1.c1,2003,0311:30:00,31 , 2.42979,57.58973,13.87112,13.90643
sgpcmbeC1.c1,2003,0312:30:00,31 , 0.46191,65.80627,13.11853,17.78119
sgpcmbeC1.c1,2003,0313:30:00,31 ,2.716975,58.40796,12.14502,13.57132
sgpcmbeC1.c1,2003,0314:30:00,31 ,4.658148,54.26254, 16.6057,15.47729
sgpcmbeC1.c1,2003,0315:30:00,31 ,1.259241,45.93471,16.62462,12.62622
sgpcmbeC1.c1,2003,0316:30:00,31 ,0.341465,30.11038,12.23017,6.220285
sgpcmbeC1.c1,2003,0317:30:00,31 ,2.139853,18.95439,11.67972,5.201392
sgpcmbeC1.c1,2003,0318:30:00,31 ,       0,11.56162,5.207296,3.160467
sgpcmbeC1.c1,2003,0319:30:00,31 ,       0,0.081281,0.002622,0.014599
sgpcmbeC1.c1,2003,0320:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0321:30:00,31 ,       0,0.011238,0.000363,0.002018
sgpcmbeC1.c1,2003,0322:30:00,31 ,       0,0.017588,0.000567,0.003159
sgpcmbeC1.c1,2003,0323:30:00,31 ,       0,0.125936,0.007502,0.029147