datastream, year, month, tod,n, min, max, mean, std
twpcmbeC1.c1,1998,01 0:30:00,31 ,       0,0.344427, 0.09364,0.101591
twpcmbeC1.c1,1998,01 1:30:00,31 ,       0,0.391932, 0.09016,0.114136
twpcmbeC1.c1,1998,01 2:30:00,31 ,       0,0.481482,0.104912,0.130244
twpcmbeC1.c1,1998,01 3:30:00,31 ,       0,0.454164,0.115524,0.131158
twpcmbeC1.c1,1998,01 4:30:00,31 ,       0,0.479849,0.111095,0.159092
twpcmbeC1.c1,1998,01 5:30:00,31 ,       0,0.716973,0.150866,0.210752
twpcmbeC1.c1,1998,01 6:30:00,31 ,1.380508,43.39797, 21.6102,7.686507
twpcmbeC1.c1,1998,01 7:30:00,31 ,3.342228,69.81064,29.20567,16.94868
twpcmbeC1.c1,1998,01 8:30:00,31 ,6.406984,123.0391,39.23945,24.60715
twpcmbeC1.c1,1998,01 9:30:00,31 ,7.040579,117.2843, 42.1569,25.48097
twpcmbeC1.c1,1998,0110:30:00,31 ,7.790412,165.6543,55.12756,37.02389
twpcmbeC1.c1,1998,0111:30:00,31 ,6.990901,215.7199,68.24347,42.30711
twpcmbeC1.c1,1998,0112:30:00,31 ,8.462367,246.0052,68.79934,45.78446
twpcmbeC1.c1,1998,0113:30:00,30 ,2.892244,147.2823,  53.205,33.96071
twpcmbeC1.c1,1998,0114:30:00,30 ,3.489534,132.2812,62.92885, 35.1328
twpcmbeC1.c1,1998,0115:30:00,30 ,4.354167,116.0998,49.00573,28.31715
twpcmbeC1.c1,1998,0116:30:00,30 ,2.307879,61.27465,26.24233,14.86771
twpcmbeC1.c1,1998,0117:30:00,31 ,0.978858,55.47119,25.01938,13.85439
twpcmbeC1.c1,1998,0118:30:00,31 ,       0, 18.1363,8.863275,4.474397
twpcmbeC1.c1,1998,0119:30:00,30 ,       0,1.142627,0.126447,0.255208
twpcmbeC1.c1,1998,0120:30:00,31 ,       0,0.393726,0.073201,0.127804
twpcmbeC1.c1,1998,0121:30:00,31 ,       0,0.388186,0.082097, 0.10545
twpcmbeC1.c1,1998,0122:30:00,31 ,       0,0.391301,0.066389,0.098488
twpcmbeC1.c1,1998,0123:30:00,30 ,       0,0.336104,0.062175,0.079541