datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,03 0:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 1:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 2:30:00,26 ,       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 5:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 6:30:00,27 ,       0,9.363859,0.467032,1.804187
sgpcmbeC1.c1,2007,03 7:30:00,27 ,0.000258,71.54532,14.07622,19.15123
sgpcmbeC1.c1,2007,03 8:30:00,24 ,0.001012,102.6679,34.46242,34.05684
sgpcmbeC1.c1,2007,03 9:30:00,26 ,0.133869,117.9403,41.26755,36.70172
sgpcmbeC1.c1,2007,0310:30:00,26 ,0.079593,196.0194,60.12998,62.51795
sgpcmbeC1.c1,2007,0311:30:00,27 ,0.037862,181.3957,46.70351,54.22717
sgpcmbeC1.c1,2007,0312:30:00,27 ,0.137605,295.9413,52.04153,77.16976
sgpcmbeC1.c1,2007,0313:30:00,27 , 0.00092,294.2603,52.62756,74.06698
sgpcmbeC1.c1,2007,0314:30:00,27 ,       0,260.2437,63.78334,60.60434
sgpcmbeC1.c1,2007,0315:30:00,28 , 0.06207,224.9233,73.18505,60.83758
sgpcmbeC1.c1,2007,0316:30:00,27 ,0.052433,122.8621,46.32552,36.94856
sgpcmbeC1.c1,2007,0317:30:00,29 ,       0,64.95473,29.60239,24.28097
sgpcmbeC1.c1,2007,0318:30:00,29 ,       0,23.73201,4.645727,5.512037
sgpcmbeC1.c1,2007,0319:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0320:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0321:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0322:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0323:30:00,26 ,       0,       0,       0,       0