PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/11-13:12:40
G01     87.3           32.3                5.0 +/-    1.73       8.3 +/-    1.73  0.030 / 0.030
G07     127.7          43.3                7.1 +/-    1.12       9.8 +/-    1.12  0.030 / 0.030
G11     64.9           38.0                4.0 +/-    0.67       6.1 +/-    0.67  0.060 / 0.170
G13     291.5          36.9                6.0 +/-    1.89       9.3 +/-    1.89  0.070 / 0.180
G17     216.1          57.2                5.2 +/-    0.93       6.1 +/-    0.93  0.080 / 0.140
G18     60.8           23.0                4.1 +/-    0.64       8.5 +/-    0.64  0.070 / 0.150
G19     215.9          26.0                4.9 +/-    2.75       9.4 +/-    2.75  0.070 / 0.130
G28     353.4          61.6                4.1 +/-    1.24       4.6 +/-    1.24  0.060 / 0.100
G30     109.4          75.8                6.5 +/-    0.64       6.7 +/-    0.64  0.060 / 0.060