PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/28-22:42:50
G01     319.8          15.3                8.7 +/-    1.15      21.5 +/-    1.15  0.270 / 0.410
G08     259.2          14.7               12.2 +/-    1.49      30.6 +/-    1.49  0.270 / 0.400
G10     73.8           55.6                9.8 +/-    0.56      11.6 +/-    0.56  0.060 / 0.080
G11     305.4          22.2                8.2 +/-    1.36      17.0 +/-    1.36  0.050 / 0.070
G14     289.9          70.4               10.9 +/-    0.77      11.5 +/-    0.77  0.140 / 0.450
G18     99.3           30.6               12.2 +/-    0.66      21.0 +/-    0.66  0.130 / 0.370
G27     225.0          10.3               11.4 +/-   22.71      31.7 +/-   22.71  0.040 / 0.030
G31     180.2          34.8               14.2 +/-    1.43      22.6 +/-    1.43  0.030 / 0.040
G32     353.0          70.8               10.4 +/-    0.69      11.0 +/-    0.69  0.030 / 0.040