PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/29-16:43:10
G01     67.6           32.5                9.0 +/-    0.94      14.9 +/-    0.94  0.050 / 0.160
G07     139.0          28.7               10.8 +/-    1.19      19.3 +/-    1.19  0.050 / 0.120
G11     51.8           28.7                8.1 +/-    1.46      14.5 +/-    1.46  0.030 / 0.050
G13     270.9          37.2               12.0 +/-    1.16      18.3 +/-    1.16  0.030 / 0.050
G15     301.8          14.8                7.8 +/-    1.50      19.6 +/-    1.50  0.050 / 0.080
G17     238.2          70.4               11.3 +/-    0.73      11.9 +/-    0.73  0.050 / 0.070
G18     46.9           16.8                7.0 +/-    1.60      16.7 +/-    1.60  0.040 / 0.090
G19     226.1          42.0               11.9 +/-    1.39      16.8 +/-    1.39  0.050 / 0.080
G28     24.2           58.6               10.5 +/-    0.33      12.1 +/-    0.33  0.050 / 0.110
G30     138.3          59.6               10.9 +/-    0.67      12.5 +/-    0.67  0.070 / 0.120