datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,01 0:30:00,30 ,256.8568,376.6417,308.1592,  24.988
sgpcmbeC1.c1,1999,01 1:30:00,30 ,254.3456,366.2246,307.4012,24.72349
sgpcmbeC1.c1,1999,01 2:30:00,31 ,260.6728,360.0094,307.1481, 23.8233
sgpcmbeC1.c1,1999,01 3:30:00,30 ,259.1547,355.6652,305.9835,23.86668
sgpcmbeC1.c1,1999,01 4:30:00,30 , 257.307,351.4205,304.8557,23.83641
sgpcmbeC1.c1,1999,01 5:30:00,30 ,256.0909,344.2583,304.8322,23.65304
sgpcmbeC1.c1,1999,01 6:30:00,30 , 253.276,340.7763,304.1528,23.22949
sgpcmbeC1.c1,1999,01 7:30:00,30 , 253.658,344.3396,304.5163,23.66603
sgpcmbeC1.c1,1999,01 8:30:00,29 ,257.5743,345.1117,309.2766,21.96847
sgpcmbeC1.c1,1999,01 9:30:00,30 , 266.078, 350.437,320.6409,22.72835
sgpcmbeC1.c1,1999,0110:30:00,29 , 276.404, 381.352,333.3547,28.01789
sgpcmbeC1.c1,1999,0111:30:00,30 ,286.4662,391.6779,344.3009,31.94324
sgpcmbeC1.c1,1999,0112:30:00,28 ,292.5735,409.2832,354.7399,37.09141
sgpcmbeC1.c1,1999,0113:30:00,28 ,295.1494,413.3835,358.7225,38.34365
sgpcmbeC1.c1,1999,0114:30:00,28 ,294.0486,411.1038,358.5266,38.21774
sgpcmbeC1.c1,1999,0115:30:00,29 ,291.4794,409.0048,353.0069,36.51151
sgpcmbeC1.c1,1999,0116:30:00,30 , 283.964,400.9959,341.6962,32.65872
sgpcmbeC1.c1,1999,0117:30:00,30 ,  273.94,387.8815,326.9918,27.83204
sgpcmbeC1.c1,1999,0118:30:00,30 ,264.8932,369.2778,319.2105,24.87612
sgpcmbeC1.c1,1999,0119:30:00,30 ,264.5565,365.8727,316.6199,24.52176
sgpcmbeC1.c1,1999,0120:30:00,30 ,261.1307, 370.724,316.0134,24.93818
sgpcmbeC1.c1,1999,0121:30:00,30 ,262.4588, 376.195,314.5717,25.31327
sgpcmbeC1.c1,1999,0122:30:00,30 ,255.7587,382.5331,312.7756,26.40146
sgpcmbeC1.c1,1999,0123:30:00,30 ,256.3939,381.9312,311.0044,25.84105