datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,01 0:30:00,29 ,0.240808,23.45296,3.508694,5.698457
sgpcmbeC1.c1,1998,01 1:30:00,29 ,0.207207,21.47446, 2.17377,4.301458
sgpcmbeC1.c1,1998,01 2:30:00,29 ,0.214463,11.16989,2.365426,3.294384
sgpcmbeC1.c1,1998,01 3:30:00,29 ,0.278872,23.84799,4.290944,7.031858
sgpcmbeC1.c1,1998,01 4:30:00,29 ,0.192685,17.82735,3.215415,5.129324
sgpcmbeC1.c1,1998,01 5:30:00,29 ,0.236657,37.60559, 3.61438,7.815728
sgpcmbeC1.c1,1998,01 6:30:00,29 , 0.16767,22.43242,3.517252,6.053655
sgpcmbeC1.c1,1998,01 7:30:00,29 ,0.194505,24.35984,3.241496,5.696896
sgpcmbeC1.c1,1998,01 8:30:00,29 ,0.301366,10.54278,1.796308,2.498014
sgpcmbeC1.c1,1998,01 9:30:00,29 ,0.251314, 26.5414,3.467968,5.527829
sgpcmbeC1.c1,1998,0110:30:00,29 ,0.261886,9.103741, 2.92652,2.795129
sgpcmbeC1.c1,1998,0111:30:00,29 ,0.258178, 15.3929,2.488302,3.411173
sgpcmbeC1.c1,1998,0112:30:00,29 ,0.422162,20.21191,2.941833,4.566537
sgpcmbeC1.c1,1998,0113:30:00,29 ,0.247079,14.70145,2.603432,3.548578
sgpcmbeC1.c1,1998,0114:30:00,29 ,0.306269, 29.1363,  4.3847,7.669534
sgpcmbeC1.c1,1998,0115:30:00,29 ,0.357104,13.93198,2.936251,3.820311
sgpcmbeC1.c1,1998,0116:30:00,29 , 0.29477,30.38061,2.414248,5.489819
sgpcmbeC1.c1,1998,0117:30:00,29 ,0.199863,14.30993, 2.28102,3.604906
sgpcmbeC1.c1,1998,0118:30:00,28 ,0.378899, 6.82142,1.696449,1.853587
sgpcmbeC1.c1,1998,0119:30:00,28 ,0.277326,20.42427,2.442717, 4.14414
sgpcmbeC1.c1,1998,0120:30:00,28 ,0.308135,6.671686,1.928565,1.930233
sgpcmbeC1.c1,1998,0121:30:00,28 ,0.209693,14.95925, 2.14863,3.595532
sgpcmbeC1.c1,1998,0122:30:00,29 ,0.206065,16.49749,2.516023,3.776418
sgpcmbeC1.c1,1998,0123:30:00,29 ,0.156441,20.18532,3.896732,5.727734