PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-14:27:30
G02     202.3          28.3                8.9 +/-    1.43      16.2 +/-    1.43  0.120 / 0.290
G06     166.9          63.2                9.8 +/-    0.95      10.8 +/-    0.95  0.160 / 0.310
G12     305.1          11.5                1.0 +/-   16.37       2.7 +/-   16.37  0.030 / 0.040
G17     34.2           50.8                6.1 +/-    1.30       7.6 +/-    1.30  0.030 / 0.040
G19     355.8          67.2                5.8 +/-    1.01       6.3 +/-    1.01  0.030 / 0.050
G24     304.5          34.2                6.0 +/-    1.96       9.6 +/-    1.96  0.030 / 0.040
G28     98.2           33.9                6.4 +/-    0.90      10.3 +/-    0.90  0.050 / 0.120