datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,03 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,03 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,03 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,03 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,03 4:30:00,31 ,       0,1.552765,0.088594,0.346054
sgpcmbeC1.c1,1998,03 5:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,03 6:30:00,31 ,       0,13.17514,4.519564,4.235541
sgpcmbeC1.c1,1998,03 7:30:00,31 ,2.268966,36.41565,12.79103,7.277894
sgpcmbeC1.c1,1998,03 8:30:00,31 ,3.010406,57.91718,18.74227,16.19002
sgpcmbeC1.c1,1998,03 9:30:00,31 ,2.435488,71.58755,20.93761,18.07448
sgpcmbeC1.c1,1998,0310:30:00,31 ,1.349216,75.40629,32.52864, 26.8696
sgpcmbeC1.c1,1998,0311:30:00,31 ,0.907662,123.7482,37.12767,31.21549
sgpcmbeC1.c1,1998,0312:30:00,31 ,0.668668,151.5336,39.06154,42.01641
sgpcmbeC1.c1,1998,0313:30:00,31 ,0.843443,91.35706,31.30839,27.11181
sgpcmbeC1.c1,1998,0314:30:00,31 , 0.88058,  97.951,28.16634,27.07358
sgpcmbeC1.c1,1998,0315:30:00,30 ,1.176639,147.8754,22.20781,27.15604
sgpcmbeC1.c1,1998,0316:30:00,31 ,2.806632,61.59024,17.75692,16.92863
sgpcmbeC1.c1,1998,0317:30:00,31 ,2.857956, 51.6319,14.60732,10.45797
sgpcmbeC1.c1,1998,0318:30:00,31 ,1.999346,26.19954,9.950073,6.079115
sgpcmbeC1.c1,1998,0319:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0320:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0321:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0322:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0323:30:00,29 ,       0,       0,       0,       0