datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,06 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,06 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,06 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,06 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,06 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,06 5:30:00,30 ,       0,24.79238,14.16079,5.784385
sgpcmbeC1.c1,2006,06 6:30:00,30 , 13.4971, 114.335,64.54861,22.93648
sgpcmbeC1.c1,2006,06 7:30:00,30 ,61.27812,224.0879,116.8493,45.63156
sgpcmbeC1.c1,2006,06 8:30:00,30 ,38.55269,313.4029,141.3038,67.28653
sgpcmbeC1.c1,2006,06 9:30:00,30 ,13.12317,370.2441,159.5532, 84.5672
sgpcmbeC1.c1,2006,0610:30:00,30 ,27.84998,403.5902,171.1935,90.34849
sgpcmbeC1.c1,2006,0611:30:00,30 ,67.31252,433.4523,176.7792,82.65352
sgpcmbeC1.c1,2006,0612:30:00,30 ,91.43587,464.1712,207.2302,99.28133
sgpcmbeC1.c1,2006,0613:30:00,30 ,91.77859,476.9508,220.9221,112.8593
sgpcmbeC1.c1,2006,0614:30:00,30 ,89.17754,439.7721,215.0582,97.43312
sgpcmbeC1.c1,2006,0615:30:00,30 ,84.08163,385.7227, 195.553,79.66601
sgpcmbeC1.c1,2006,0616:30:00,30 ,76.23951,250.3078,147.5395,43.05595
sgpcmbeC1.c1,2006,0617:30:00,30 ,66.49927,224.1711,112.4831,35.67849
sgpcmbeC1.c1,2006,0618:30:00,30 ,46.91091,111.7516,67.86445,16.63117
sgpcmbeC1.c1,2006,0619:30:00,30 ,4.963181,40.60629,16.77922, 5.70309
sgpcmbeC1.c1,2006,0620:30:00,30 ,       0,0.278212,0.009316,0.050787
sgpcmbeC1.c1,2006,0621:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0622:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0623:30:00,30 ,       0,       0,       0,       0