datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,03 0:30:00,30 ,       0,309.5567,33.38648,70.12743
sgpcmbeC1.c1,2007,03 1:30:00,30 ,       0,650.0683,56.64468, 135.663
sgpcmbeC1.c1,2007,03 2:30:00,30 ,       0, 514.507,56.36051,122.7159
sgpcmbeC1.c1,2007,03 3:30:00,30 ,       0, 411.879,42.42116,90.83243
sgpcmbeC1.c1,2007,03 4:30:00,29 ,       0,270.7791,37.22297,69.56806
sgpcmbeC1.c1,2007,03 5:30:00,29 ,       0,1128.827,65.33271,209.3684
sgpcmbeC1.c1,2007,03 6:30:00,28 ,0.008397,134.9874,29.86724,40.93177
sgpcmbeC1.c1,2007,03 7:30:00,29 ,       0,865.5136,72.66809,177.6275
sgpcmbeC1.c1,2007,03 8:30:00,29 ,       0,522.5135,62.54242,128.2828
sgpcmbeC1.c1,2007,03 9:30:00,30 ,       0,944.8914,98.38917,208.6964
sgpcmbeC1.c1,2007,0310:30:00,29 ,       0,804.3233,68.17918,169.0664
sgpcmbeC1.c1,2007,0311:30:00,28 ,       0, 288.423,39.06975,77.17173
sgpcmbeC1.c1,2007,0312:30:00,30 ,       0,1949.014,117.7063,361.9399
sgpcmbeC1.c1,2007,0313:30:00,30 ,0.001782,1502.216, 110.847,294.0944
sgpcmbeC1.c1,2007,0314:30:00,29 ,       0,903.9322,76.61686,193.1896
sgpcmbeC1.c1,2007,0315:30:00,29 ,       0,641.5446,60.96438,137.7772
sgpcmbeC1.c1,2007,0316:30:00,30 ,0.074534,952.2756, 74.5932,184.6527
sgpcmbeC1.c1,2007,0317:30:00,30 ,0.106281,201.5358, 33.9098,59.88419
sgpcmbeC1.c1,2007,0318:30:00,30 ,0.262018,241.3583,24.27584,49.12094
sgpcmbeC1.c1,2007,0319:30:00,31 ,0.158407, 351.135,37.00301,73.72948
sgpcmbeC1.c1,2007,0320:30:00,30 ,0.073804,413.9709,  37.621, 91.5576
sgpcmbeC1.c1,2007,0321:30:00,30 ,0.124783,1183.291,73.03517,229.7705
sgpcmbeC1.c1,2007,0322:30:00,29 ,0.025355,536.7108,39.69254,112.4409
sgpcmbeC1.c1,2007,0323:30:00,30 ,0.014338,657.9417,74.94231,175.3558