sample    sensor1    sensor2    sensor3........sensorP
1         2.45       3.56       2.345          2.33
2         2.37       3.46       2.22           1.98
3         2.78       3.22       1.45           2.67
N

1_sensor1   2_sensor1   3_sensor1......N_sensorn1    2_sensor1    2_sensor2
2.45        2.37        2.78                         3.56         3.46