datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,03 0:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,03 1:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,03 2:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,03 3:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,03 4:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,03 5:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,03 6:30:00,31 ,       0,26.65378,3.908443, 5.31658
sgpcmbeC1.c1,2001,03 7:30:00,31 ,10.36782,90.74417,  45.858,21.74629
sgpcmbeC1.c1,2001,03 8:30:00,31 ,49.58105,216.2147, 115.018,47.67833
sgpcmbeC1.c1,2001,03 9:30:00,31 ,61.62414,340.3962,174.3724,71.11245
sgpcmbeC1.c1,2001,0310:30:00,31 ,66.44472,451.7985,234.6161,107.8395
sgpcmbeC1.c1,2001,0311:30:00,31 ,70.72259,507.2286,257.9149,135.9598
sgpcmbeC1.c1,2001,0312:30:00,31 ,74.56383,468.9634,269.2256,127.4329
sgpcmbeC1.c1,2001,0313:30:00,31 ,59.68151,438.8431,242.6462,117.3826
sgpcmbeC1.c1,2001,0314:30:00,31 ,51.84776,372.9887,228.4783,106.0722
sgpcmbeC1.c1,2001,0315:30:00,31 ,39.83775,286.8641,178.4975,83.52056
sgpcmbeC1.c1,2001,0316:30:00,31 ,44.43678,249.7428,125.4772,48.47388
sgpcmbeC1.c1,2001,0317:30:00,31 ,11.61703,106.0754,60.05992,25.68123
sgpcmbeC1.c1,2001,0318:30:00,31 ,0.746085,26.77213,10.38579,7.577293
sgpcmbeC1.c1,2001,0319:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0320:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0321:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0322:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0323:30:00,27 ,       0,       0,       0,       0