datastream, year, month, tod,n, min, max, mean, std
twpcmbeC1.c1,1999,03 0:30:00,31 ,       0,0.222714,0.010371,0.040577
twpcmbeC1.c1,1999,03 1:30:00,30 ,       0,0.145306,0.005036,0.026514
twpcmbeC1.c1,1999,03 2:30:00,31 ,       0,0.217637,0.011194,0.044462
twpcmbeC1.c1,1999,03 3:30:00,31 ,       0,0.636706,0.025971,0.116325
twpcmbeC1.c1,1999,03 4:30:00,31 ,       0,0.421251,0.014881,0.075542
twpcmbeC1.c1,1999,03 5:30:00,31 ,       0,0.246114,0.008339,0.044185
twpcmbeC1.c1,1999,03 6:30:00,31 ,       0,35.94454,22.58194, 7.41722
twpcmbeC1.c1,1999,03 7:30:00,31 ,10.04258,174.1784,97.04786,35.44775
twpcmbeC1.c1,1999,03 8:30:00,31 ,7.092379,288.4247,160.6059,70.26494
twpcmbeC1.c1,1999,03 9:30:00,31 ,39.58661,376.9146, 201.662,91.56129
twpcmbeC1.c1,1999,0310:30:00,31 ,45.88301,517.7161,241.4623,120.4233
twpcmbeC1.c1,1999,0311:30:00,31 ,48.23378,511.1154,264.3157,129.8609
twpcmbeC1.c1,1999,0312:30:00,31 ,49.93325,496.0235,243.9851,130.4396
twpcmbeC1.c1,1999,0313:30:00,31 ,51.26397,494.6124,236.5148,126.6765
twpcmbeC1.c1,1999,0314:30:00,31 ,39.19923,449.4068,210.2182,  113.74
twpcmbeC1.c1,1999,0315:30:00,30 ,31.83834,356.9881,181.6832,81.61907
twpcmbeC1.c1,1999,0316:30:00,30 ,30.22352,240.2291,131.7134,52.05141
twpcmbeC1.c1,1999,0317:30:00,28 ,18.33151,120.2385,  68.695,21.49443
twpcmbeC1.c1,1999,0318:30:00,30 ,0.145545,9.844839,4.553221,2.075387
twpcmbeC1.c1,1999,0319:30:00,30 ,       0,       0,       0,       0
twpcmbeC1.c1,1999,0320:30:00,31 ,       0,       0,       0,       0
twpcmbeC1.c1,1999,0321:30:00,31 ,       0,0.020801,0.000942,0.003834
twpcmbeC1.c1,1999,0322:30:00,29 ,       0,0.122331, 0.00666,0.024679
twpcmbeC1.c1,1999,0323:30:00,31 ,       0,0.236257, 0.00925,0.042463