PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/24-14:12:50
G01     94.7           30.6                8.5 +/-    0.43      14.7 +/-    0.43  0.030 / 0.030
G07     121.7          48.9                8.4 +/-    0.59      10.7 +/-    0.59  0.030 / 0.030
G08     42.0           10.0                8.5 +/-    1.37      23.6 +/-    1.37  0.070 / 0.140
G11     72.6           40.8                7.7 +/-    0.71      11.0 +/-    0.71  0.080 / 0.120
G13     298.8          34.8                8.3 +/-    1.09      13.3 +/-    1.09  0.030 / 0.060
G17     211.6          49.9               12.2 +/-    1.01      15.4 +/-    1.01  0.040 / 0.050
G18     67.5           24.3                7.1 +/-    0.57      14.0 +/-    0.57  0.040 / 0.110
G19     213.2          20.7                8.2 +/-    1.75      17.8 +/-    1.75  0.040 / 0.090
G28     340.9          61.9                7.5 +/-    0.73       8.3 +/-    0.73  0.030 / 0.050
G30     83.7           79.3                8.7 +/-    0.56       8.8 +/-    0.56  0.030 / 0.050