PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/10-18:57:50
G02     20.5           64.5                7.6 +/-    0.66       8.3 +/-    0.66  0.040 / 0.040
G05     151.8          53.7               11.7 +/-    0.67      14.1 +/-    0.67  0.040 / 0.040
G06     49.8           20.8                7.0 +/-    1.92      15.0 +/-    1.92  0.030 / 0.030
G12     201.5          74.7                9.6 +/-    0.68       9.9 +/-    0.68  0.030 / 0.030
G19     91.4           17.9                9.0 +/-    2.34      20.9 +/-    2.34  0.090 / 0.080
G25     307.1          47.7                8.8 +/-    2.29      11.5 +/-    2.29  0.050 / 0.060
G29     300.3          20.4                8.9 +/-    1.60      19.4 +/-    1.60  0.170 / 0.190