PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/13-13:28:10
G01     73.6           33.1                4.5 +/-    0.94       7.5 +/-    0.94  0.040 / 0.030
G07     136.0          33.1                6.9 +/-    0.93      11.4 +/-    0.93  0.030 / 0.030
G11     54.7           31.4                5.2 +/-    1.88       8.8 +/-    1.88  0.050 / 0.070
G13     277.2          37.9                6.9 +/-    1.62      10.4 +/-    1.62  0.050 / 0.090
G15     307.6          12.9                4.3 +/-    2.44      11.2 +/-    2.44  0.050 / 0.040
G17     229.5          68.3                7.4 +/-    0.73       8.0 +/-    0.73  0.030 / 0.040
G18     50.5           19.0                4.9 +/-    2.16      11.0 +/-    2.16  0.190 / 0.270
G19     222.3          36.3                6.9 +/-    2.13      10.7 +/-    2.13  0.040 / 0.080
G28     14.8           59.9                6.9 +/-    1.43       7.9 +/-    1.43  0.060 / 0.110
G30     132.6          65.9                6.7 +/-    0.53       7.3 +/-    0.53  0.050 / 0.090