datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,12 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 2:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 6:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,12 7:30:00,29 ,0.292373,14.05968,4.033585,3.098978
sgpcmbeC1.c1,1997,12 8:30:00,29 ,11.13521,67.36965,33.36067,13.30375
sgpcmbeC1.c1,1997,12 9:30:00,30 ,27.50072,184.4481,70.02591,36.99554
sgpcmbeC1.c1,1997,1210:30:00,30 ,23.97784,269.5135,84.78605,50.61821
sgpcmbeC1.c1,1997,1211:30:00,29 ,29.48168,246.6619,100.1872,58.82532
sgpcmbeC1.c1,1997,1212:30:00,29 ,42.20188,244.0321,101.5098, 58.5788
sgpcmbeC1.c1,1997,1213:30:00,29 ,35.12812,248.0723,95.52171,57.98011
sgpcmbeC1.c1,1997,1214:30:00,29 ,19.83664,207.1857,79.91073,44.21848
sgpcmbeC1.c1,1997,1215:30:00,29 ,11.62508, 154.076, 58.8306, 33.5463
sgpcmbeC1.c1,1997,1216:30:00,29 ,6.137894,69.83373,28.27375,16.43384
sgpcmbeC1.c1,1997,1217:30:00,29 ,       0, 5.55648,2.425622,1.742653
sgpcmbeC1.c1,1997,1218:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1219:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1220:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1221:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1222:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1223:30:00,30 ,       0,       0,       0,       0