datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,03 0:30:00,19 ,       0,170.1744,9.945895,38.84036
sgpcmbeC1.c1,2002,03 1:30:00,19 ,       0,97.93653,6.945986,22.45567
sgpcmbeC1.c1,2002,03 2:30:00,19 ,       0, 128.332,8.452451,29.37296
sgpcmbeC1.c1,2002,03 3:30:00,18 ,       0,136.1232,10.10641, 32.1918
sgpcmbeC1.c1,2002,03 4:30:00,18 ,0.002052,92.45333,8.379727,22.03138
sgpcmbeC1.c1,2002,03 5:30:00,17 ,       0,  94.371,9.594218,25.04122
sgpcmbeC1.c1,2002,03 6:30:00,17 ,       0,216.3704,18.80174,52.63325
sgpcmbeC1.c1,2002,03 7:30:00,17 ,       0,297.0329,    20.9,71.55546
sgpcmbeC1.c1,2002,03 8:30:00,17 ,       0,333.5376,20.76582,80.63461
sgpcmbeC1.c1,2002,03 9:30:00,21 ,       0,318.7188,32.57063, 80.2468
sgpcmbeC1.c1,2002,0310:30:00,22 ,       0, 268.446, 31.0156,  78.352
sgpcmbeC1.c1,2002,0311:30:00,22 ,       0,454.0895,39.60624,105.4993
sgpcmbeC1.c1,2002,0312:30:00,23 ,       0,393.2553,45.62656,111.4822
sgpcmbeC1.c1,2002,0313:30:00,23 ,       0,357.0336,26.94895,79.59601
sgpcmbeC1.c1,2002,0314:30:00,22 ,       0,512.3439,36.12579,111.3303
sgpcmbeC1.c1,2002,0315:30:00,21 ,0.034486,385.6297,33.97218, 90.4729
sgpcmbeC1.c1,2002,0316:30:00,22 ,0.004916,214.2288, 26.7898,61.57292
sgpcmbeC1.c1,2002,0317:30:00,23 ,0.008995,966.9913,68.32111,205.6564
sgpcmbeC1.c1,2002,0318:30:00,23 ,0.622408, 334.529,42.29659,89.66222
sgpcmbeC1.c1,2002,0319:30:00,23 ,0.419235,817.2098,56.00711,172.3628
sgpcmbeC1.c1,2002,0320:30:00,23 ,0.002866,1614.293,86.86562,334.7749
sgpcmbeC1.c1,2002,0321:30:00,23 ,       0,1157.587,63.03616,239.9239
sgpcmbeC1.c1,2002,0322:30:00,21 ,       0,133.9192,14.27204,35.05511
sgpcmbeC1.c1,2002,0323:30:00,20 ,       0,162.0156,9.729223,35.96536