datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,11 0:30:00,28 ,       0,0.537891, 0.01921,0.101652
sgpcmbeC1.c1,1997,11 1:30:00,28 ,       0,0.760965,0.027177,0.143809
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 ,       0,1.937616,0.300869,0.615434
sgpcmbeC1.c1,1997,11 7:30:00,30 , 2.18568,51.46088,23.48029,14.84272
sgpcmbeC1.c1,1997,11 8:30:00,30 , 3.29663,65.76387,34.99374,18.53128
sgpcmbeC1.c1,1997,11 9:30:00,30 ,3.527787,95.37303,39.43831,21.01999
sgpcmbeC1.c1,1997,1110:30:00,30 , 11.3386,97.36985,38.69461,22.26155
sgpcmbeC1.c1,1997,1111:30:00,30 ,8.482065,170.8904,49.94228,44.74118
sgpcmbeC1.c1,1997,1112:30:00,30 ,3.600466,225.8136,51.61114, 61.5007
sgpcmbeC1.c1,1997,1113:30:00,30 ,8.791477,199.6576,68.09621,55.43233
sgpcmbeC1.c1,1997,1114:30:00,30 ,4.824286,196.4771,63.55074,44.94529
sgpcmbeC1.c1,1997,1115:30:00,30 ,5.051413,118.1394,47.61333,27.30683
sgpcmbeC1.c1,1997,1116:30:00,30 ,   1.541,89.81516,36.80507,21.03259
sgpcmbeC1.c1,1997,1117:30:00,30 ,       0,22.85701,8.023593,6.102021
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 ,       0,0.707176,0.023573,0.129112
sgpcmbeC1.c1,1997,1121:30:00,30 ,       0,0.956519,0.031884,0.174636
sgpcmbeC1.c1,1997,1122:30:00,28 ,       0,1.048084,0.037432,0.198069
sgpcmbeC1.c1,1997,1123:30:00,29 ,       0,       0,       0,       0