PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/16-06:58:10
G07     337.9          59.5                2.4 +/-    0.80       2.7 +/-    0.80  0.070 / 0.140
G08     93.7           51.6                4.6 +/-    0.52       5.7 +/-    0.52  0.070 / 0.160
G09     186.3          71.2                3.8 +/-    0.60       4.0 +/-    0.60  0.030 / 0.040
G11     143.6          13.9                3.3 +/-    2.77       8.5 +/-    2.77  0.030 / 0.050
G16     46.9           10.2                1.6 +/-    3.31       4.3 +/-    3.31  0.130 / 0.430
G23     156.5          41.8                6.1 +/-    0.83       8.6 +/-    0.83  0.090 / 0.400
G27     52.8           29.9                2.6 +/-    0.43       4.5 +/-    0.43  0.030 / 0.040
G28     238.9          31.4                2.8 +/-    2.57       4.8 +/-    2.57  0.030 / 0.040
G30     302.9          35.6                2.9 +/-    0.96       4.5 +/-    0.96  0.030 / 0.030