datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,11 0:30:00,28 ,       0,0.093635,0.003344,0.017695
sgpcmbeC1.c1,1997,11 1:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,11 2:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,11 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,11 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,11 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,11 6:30:00,30 ,       0,0.111763,0.015203,0.033996
sgpcmbeC1.c1,1997,11 7:30:00,30 ,0.052393,20.83002,7.578025, 6.37762
sgpcmbeC1.c1,1997,11 8:30:00,30 ,2.708385, 62.7641,  30.804,20.59728
sgpcmbeC1.c1,1997,11 9:30:00,30 ,4.554216,95.64842,55.24594,32.04131
sgpcmbeC1.c1,1997,1110:30:00,30 ,9.499673, 117.641,75.90752,40.23739
sgpcmbeC1.c1,1997,1111:30:00,30 ,14.65343, 129.992,91.05044,41.40246
sgpcmbeC1.c1,1997,1112:30:00,30 ,11.79156,133.1375,90.50181,43.22636
sgpcmbeC1.c1,1997,1113:30:00,30 ,8.491912,125.8302,84.24618, 41.4873
sgpcmbeC1.c1,1997,1114:30:00,30 ,5.809312,104.1712,69.61601,35.78969
sgpcmbeC1.c1,1997,1115:30:00,30 ,2.959081,80.72784,46.83418,26.04125
sgpcmbeC1.c1,1997,1116:30:00,30 ,0.699104,39.31875,19.41977, 12.6351
sgpcmbeC1.c1,1997,1117:30:00,30 ,       0,5.194879,1.224024,1.360963
sgpcmbeC1.c1,1997,1118:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1119:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1120:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1121:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1122:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1123:30:00,29 ,       0,       0,       0,       0