PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/28-14:28:10
G02     214.5          57.8               14.3 +/-    0.59      16.6 +/-    0.59  0.050 / 0.080
G06     65.4           77.2               14.2 +/-    1.00      14.5 +/-    1.00  0.050 / 0.070
G12     318.1          34.2                9.7 +/-    1.78      15.6 +/-    1.78  0.090 / 0.250
G17     58.0           31.2               12.7 +/-    1.82      21.7 +/-    1.82  0.120 / 0.290
G19     40.1           48.6               12.8 +/-    1.41      16.4 +/-    1.41  0.070 / 0.080
G24     269.8          41.6               12.1 +/-    0.55      17.2 +/-    0.55  0.060 / 0.080
G28     122.1          14.1               16.6 +/-    1.26      42.1 +/-    1.26  0.040 / 0.080