datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,12 0:30:00,26 ,       0,0.061908,0.004488,0.013777
sgpcmbeC1.c1,2005,12 1:30:00,23 ,       0,0.240469, 0.01242,0.050528
sgpcmbeC1.c1,2005,12 2:30:00,24 ,       0,0.253095,0.027354,0.065847
sgpcmbeC1.c1,2005,12 3:30:00,28 ,       0, 0.06006,0.003379,0.012882
sgpcmbeC1.c1,2005,12 4:30:00,28 ,       0,0.128229,0.011512,0.032644
sgpcmbeC1.c1,2005,12 5:30:00,30 ,       0,0.125461,0.008838, 0.02642
sgpcmbeC1.c1,2005,12 6:30:00,30 ,       0,0.175722,0.016724,0.046796
sgpcmbeC1.c1,2005,12 7:30:00,31 ,       0,7.983509,3.043644,2.296606
sgpcmbeC1.c1,2005,12 8:30:00,31 ,1.672746,22.47331,12.60157,6.164134
sgpcmbeC1.c1,2005,12 9:30:00,31 ,1.666064, 32.7172,12.25956,5.694324
sgpcmbeC1.c1,2005,1210:30:00,31 ,3.528689,35.93376,11.34801,7.402556
sgpcmbeC1.c1,2005,1211:30:00,30 ,1.702541,43.91233,8.888585,10.25038
sgpcmbeC1.c1,2005,1212:30:00,31 ,0.435853,33.97508,9.732644,10.79288
sgpcmbeC1.c1,2005,1213:30:00,31 ,1.615684,52.46791,12.81129,13.40687
sgpcmbeC1.c1,2005,1214:30:00,31 ,1.135908,31.61621,9.925146,6.480236
sgpcmbeC1.c1,2005,1215:30:00,31 ,1.000072,22.94059,11.00799,6.025733
sgpcmbeC1.c1,2005,1216:30:00,31 ,1.326006,20.11603, 10.8097,5.751063
sgpcmbeC1.c1,2005,1217:30:00,31 ,       0,5.697022, 1.80851,1.650493
sgpcmbeC1.c1,2005,1218:30:00,24 ,       0,0.034301,0.001575,0.007007
sgpcmbeC1.c1,2005,1219:30:00,24 ,       0,0.083615, 0.00671,0.020105
sgpcmbeC1.c1,2005,1220:30:00,25 ,       0,0.097844,0.009341,0.027532
sgpcmbeC1.c1,2005,1221:30:00,24 ,       0,0.399626,0.022434,0.085125
sgpcmbeC1.c1,2005,1222:30:00,25 ,       0, 0.17531,0.013238,0.040064
sgpcmbeC1.c1,2005,1223:30:00,25 ,       0,0.178929,0.008563,0.035906