datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,03 0:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 1:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 2:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 3:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 4:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 5:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 6:30:00,27 ,       0,5.962945,0.851573,1.285382
sgpcmbeC1.c1,2007,03 7:30:00,27 ,  0.4252, 23.8934,7.642794,5.492547
sgpcmbeC1.c1,2007,03 8:30:00,26 ,0.512452,23.16754,10.72293,6.487262
sgpcmbeC1.c1,2007,03 9:30:00,28 , 0.34998,30.89244,11.97688,6.519887
sgpcmbeC1.c1,2007,0310:30:00,28 ,1.031633,34.89911,13.60709,10.63722
sgpcmbeC1.c1,2007,0311:30:00,28 ,0.078551,29.33167,10.29236,8.764591
sgpcmbeC1.c1,2007,0312:30:00,28 ,0.437638,51.37002,12.18526, 14.7059
sgpcmbeC1.c1,2007,0313:30:00,28 ,0.620577,55.80047,12.17502,12.93096
sgpcmbeC1.c1,2007,0314:30:00,28 ,0.781945,50.29933,14.84974,13.06318
sgpcmbeC1.c1,2007,0315:30:00,28 , 0.66307,44.01951,17.33471, 12.5896
sgpcmbeC1.c1,2007,0316:30:00,29 ,0.275025,24.33195,12.14507,6.757986
sgpcmbeC1.c1,2007,0317:30:00,29 ,0.326149,19.09683,10.69725,5.213305
sgpcmbeC1.c1,2007,0318:30:00,29 ,       0,10.50641,3.588628,2.261086
sgpcmbeC1.c1,2007,0319:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0320:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0321:30:00,27 ,       0,0.022692,0.001368,0.005066
sgpcmbeC1.c1,2007,0322:30:00,27 ,       0,0.034953,0.001295,0.006727
sgpcmbeC1.c1,2007,0323:30:00,27 ,       0,       0,       0,       0