datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,03 0:30:00,24 ,       0,1.292556,0.073443,0.276801
sgpcmbeC1.c1,2001,03 1:30:00,26 ,       0,1.609792,0.075259,0.320284
sgpcmbeC1.c1,2001,03 2:30:00,24 ,       0,2.503979, 0.13179,0.520291
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 ,       0,30.76079,4.604039,6.447448
sgpcmbeC1.c1,2001,03 7:30:00,31 ,10.44549,186.0207,71.52821,43.01689
sgpcmbeC1.c1,2001,03 8:30:00,31 ,51.70952,372.1265,208.6536,99.24925
sgpcmbeC1.c1,2001,03 9:30:00,31 ,121.4791, 561.068,320.8498,149.6293
sgpcmbeC1.c1,2001,0310:30:00,31 ,151.8602,716.5711,457.6524,188.6509
sgpcmbeC1.c1,2001,0311:30:00,31 , 105.065,871.5853,556.9632,232.2954
sgpcmbeC1.c1,2001,0312:30:00,31 ,118.2709,909.4914,569.1179,234.6897
sgpcmbeC1.c1,2001,0313:30:00,31 ,63.89264,881.8278,534.7233,252.0726
sgpcmbeC1.c1,2001,0314:30:00,31 ,51.84776,788.1093,476.8885,212.4542
sgpcmbeC1.c1,2001,0315:30:00,31 ,39.84157,645.6402,385.1723,179.1317
sgpcmbeC1.c1,2001,0316:30:00,31 ,44.47847,455.9338,257.0895,119.6624
sgpcmbeC1.c1,2001,0317:30:00,31 ,11.61743,237.3008,109.4355,60.47116
sgpcmbeC1.c1,2001,0318:30:00,31 ,0.746085,52.21973,13.36104,11.66644
sgpcmbeC1.c1,2001,0319:30:00,31 ,       0,1.554487,0.081358,0.323908
sgpcmbeC1.c1,2001,0320:30:00,29 ,       0,2.986157,  0.1719,0.656179
sgpcmbeC1.c1,2001,0321:30:00,27 ,       0,3.154985,0.171142,0.659598
sgpcmbeC1.c1,2001,0322:30:00,28 ,       0,1.277861,0.071202,0.272392
sgpcmbeC1.c1,2001,0323:30:00,27 ,       0,0.947611,0.065095,0.235304