datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,03 0:30:00,29 ,       0,0.048477,0.001672,0.009002
sgpcmbeC1.c1,1999,03 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,03 2:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,03 3:30:00,30 ,       0,0.175926,0.005864, 0.03212
sgpcmbeC1.c1,1999,03 4:30:00,29 ,       0,0.000588, 0.00002,0.000109
sgpcmbeC1.c1,1999,03 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,03 6:30:00,29 ,       0,4.959024,0.638021,1.242413
sgpcmbeC1.c1,1999,03 7:30:00,29 ,0.005519,103.3697,29.06718,33.51748
sgpcmbeC1.c1,1999,03 8:30:00,29 ,0.036613,283.3483,99.26066,111.3206
sgpcmbeC1.c1,1999,03 9:30:00,29 ,0.179009,460.6959,194.6641,179.4402
sgpcmbeC1.c1,1999,0310:30:00,29 ,0.135819,615.0204,243.4724,246.0776
sgpcmbeC1.c1,1999,0311:30:00,29 ,0.000175,706.0201,297.4832,293.0071
sgpcmbeC1.c1,1999,0312:30:00,29 , 0.40683,731.1378,   300.6,303.1969
sgpcmbeC1.c1,1999,0313:30:00,30 ,0.409164,710.0354, 293.971,290.1069
sgpcmbeC1.c1,1999,0314:30:00,30 ,0.074448,630.4192,295.9689,259.4226
sgpcmbeC1.c1,1999,0315:30:00,30 ,0.105682,490.9355,227.0082,208.8849
sgpcmbeC1.c1,1999,0316:30:00,30 ,0.010471,317.2682,135.0795,130.8093
sgpcmbeC1.c1,1999,0317:30:00,30 ,0.000031,135.5062,49.02384,53.16064
sgpcmbeC1.c1,1999,0318:30:00,30 ,       0,13.12455,3.028661,4.292281
sgpcmbeC1.c1,1999,0319:30:00,29 ,       0,0.180755,0.006233,0.033565
sgpcmbeC1.c1,1999,0320:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0321:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0322:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0323:30:00,29 ,       0,       0,       0,       0