datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,02 0:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,02 1:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,02 2:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,02 3:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,02 4:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,02 5:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,02 6:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,02 7:30:00,24 ,0.012706,0.990996,0.312146,0.386761
sgpcmbeC1.c1,2004,02 8:30:00,29 ,0.010373,0.999546,0.461833,0.467112
sgpcmbeC1.c1,2004,02 9:30:00,29 ,0.007521,       1,0.514955,0.477902
sgpcmbeC1.c1,2004,0210:30:00,29 ,0.005479,       1,0.463224,0.452912
sgpcmbeC1.c1,2004,0211:30:00,29 ,0.001474,       1,0.473304,0.443781
sgpcmbeC1.c1,2004,0212:30:00,29 ,0.008228,0.999937,0.455073,0.432368
sgpcmbeC1.c1,2004,0213:30:00,29 ,0.011088,0.999702,0.412289,0.406239
sgpcmbeC1.c1,2004,0214:30:00,29 ,  0.0053,0.999861,0.488902,0.414188
sgpcmbeC1.c1,2004,0215:30:00,29 ,0.002835,0.999455,0.483904,0.444273
sgpcmbeC1.c1,2004,0216:30:00,29 ,0.001721,0.999106,0.475731,0.444353
sgpcmbeC1.c1,2004,0217:30:00,29 ,0.004855,0.997565,0.413087,0.426429
sgpcmbeC1.c1,2004,0218:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,0219:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,0220:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,0221:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,0222:30:00,0 ,       .,       .,       .,       .
sgpcmbeC1.c1,2004,0223:30:00,0 ,       .,       .,       .,       .