PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/07-16:12:50
G01     66.7           32.3                9.6 +/-    0.79      16.0 +/-    0.79  0.030 / 0.040
G07     139.4          27.9               11.6 +/-    1.99      21.1 +/-    1.99  0.040 / 0.050
G11     51.2           28.0                7.8 +/-    0.78      14.2 +/-    0.78  0.050 / 0.080
G13     269.8          37.0               12.2 +/-    1.09      18.7 +/-    1.09  0.050 / 0.070
G15     301.4          14.8                7.3 +/-    2.13      18.2 +/-    2.13  0.050 / 0.150
G17     240.3          71.5               12.4 +/-    0.59      13.0 +/-    0.59  0.070 / 0.150
G18     46.3           16.3                7.5 +/-    1.28      18.2 +/-    1.28  0.050 / 0.130
G19     226.7          42.5               13.9 +/-    1.31      19.4 +/-    1.31  0.050 / 0.120
G28     25.6           58.5               11.0 +/-    0.76      12.6 +/-    0.76  0.030 / 0.060
G30     139.1          59.0               11.8 +/-    0.50      13.5 +/-    0.50  0.030 / 0.050