PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/01-00:28:20
G01     84.5           32.8                7.4 +/-    1.44      12.2 +/-    1.44  0.040 / 0.040
G07     129.6          41.6                9.1 +/-    1.21      12.8 +/-    1.21  0.040 / 0.040
G11     66.4           39.7                6.6 +/-    1.96       9.7 +/-    1.96  0.090 / 0.100
G13     289.6          36.7                6.3 +/-    2.20       9.7 +/-    2.20  0.060 / 0.080
G15     311.3          12.5                6.8 +/-    2.04      17.9 +/-    2.04  0.040 / 0.060
G17     219.0          56.2                7.8 +/-    1.02       9.2 +/-    1.02  0.050 / 0.050
G19     217.0          31.7                8.0 +/-    1.72      13.5 +/-    1.72  0.060 / 0.090
G28     359.9          61.2                6.1 +/-    0.67       6.8 +/-    0.67  0.070 / 0.080
G30     120.2          68.2                8.7 +/-    0.89       9.3 +/-    0.89  0.030 / 0.060