datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,03 0:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,03 1:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,03 2:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,03 3:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,03 4:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,03 5:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,03 6:30:00,27 ,       0,26.82677,6.615593,8.124347
sgpcmbeC1.c1,2002,03 7:30:00,27 ,11.77142,199.6133,93.12217,62.76657
sgpcmbeC1.c1,2002,03 8:30:00,27 ,18.29256,  416.87,255.7408,128.8654
sgpcmbeC1.c1,2002,03 9:30:00,27 ,58.14465,613.8555,420.2202,190.7466
sgpcmbeC1.c1,2002,0310:30:00,28 ,87.61532,776.9772,551.1734,234.1183
sgpcmbeC1.c1,2002,0311:30:00,28 ,80.33288,879.1786,631.4633,259.6451
sgpcmbeC1.c1,2002,0312:30:00,27 ,112.8119,919.2537, 693.285,270.4924
sgpcmbeC1.c1,2002,0313:30:00,26 ,95.67238,891.6531,677.7959,263.9607
sgpcmbeC1.c1,2002,0314:30:00,26 ,63.83678,791.0204,591.7986,237.9826
sgpcmbeC1.c1,2002,0315:30:00,27 ,64.91795,640.9503,462.4295, 186.579
sgpcmbeC1.c1,2002,0316:30:00,27 ,42.03723,449.2008,302.6898,131.1264
sgpcmbeC1.c1,2002,0317:30:00,27 ,17.29434,229.2693,145.5312,62.64357
sgpcmbeC1.c1,2002,0318:30:00,27 ,0.865084,42.70591,19.11029,12.36143
sgpcmbeC1.c1,2002,0319:30:00,27 ,       0,0.311581,0.026827,0.080211
sgpcmbeC1.c1,2002,0320:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0321:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0322:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0323:30:00,20 ,       0,       0,       0,       0