datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,03 0:30:00,9 ,       0,0.387277,0.043031,0.129092
sgpcmbeC1.c1,1997,03 1:30:00,10 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,03 2:30:00,10 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,03 3:30:00,10 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,03 4:30:00,10 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,03 5:30:00,11 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,03 6:30:00,11 ,2.604983,31.82554,15.39593,9.341364
sgpcmbeC1.c1,1997,03 7:30:00,11 ,62.11251,210.1982,158.2722,42.78222
sgpcmbeC1.c1,1997,03 8:30:00,11 ,209.0886,434.1108,369.5297,61.76602
sgpcmbeC1.c1,1997,03 9:30:00,10 ,345.0181,636.3345,556.7963,92.80895
sgpcmbeC1.c1,1997,0310:30:00,10 ,575.0973,796.4506,721.5536,73.52307
sgpcmbeC1.c1,1997,0311:30:00,10 , 608.858,902.1449,810.3065,104.2235
sgpcmbeC1.c1,1997,0312:30:00,10 ,664.0361,939.2589,843.8232,104.9614
sgpcmbeC1.c1,1997,0313:30:00,10 ,536.7456,912.3715,833.6555,111.6342
sgpcmbeC1.c1,1997,0314:30:00,10 ,479.8937,810.3707,736.6433,101.6692
sgpcmbeC1.c1,1997,0315:30:00,11 ,309.1912,658.9183,570.8782,116.0913
sgpcmbeC1.c1,1997,0316:30:00,11 , 205.781,465.3905,398.6233,72.34824
sgpcmbeC1.c1,1997,0317:30:00,10 ,67.51814, 245.876,167.9192,64.90603
sgpcmbeC1.c1,1997,0318:30:00,10 ,12.58319,50.05596,29.63347,13.78758
sgpcmbeC1.c1,1997,0319:30:00,11 ,       0,0.659994,0.102108,0.231399
sgpcmbeC1.c1,1997,0320:30:00,11 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,0321:30:00,11 ,       0,0.479881,0.069271,0.160338
sgpcmbeC1.c1,1997,0322:30:00,11 ,       0,0.839738,0.080924,0.252124
sgpcmbeC1.c1,1997,0323:30:00,8 ,       0,       0,       0,       0