PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/09-12:42:50
G01     106.9          25.6                6.1 +/-    1.33      11.9 +/-    1.33  0.020 / 0.030
G07     107.2          58.0                7.0 +/-    0.59       8.1 +/-    0.59  0.020 / 0.030
G08     41.7           18.7                5.4 +/-    2.40      12.2 +/-    2.40  0.030 / 0.040
G09     173.4          11.6                4.1 +/-    2.79      11.0 +/-    2.79  0.030 / 0.030
G11     87.3           42.4                6.8 +/-    0.67       9.5 +/-    0.67  0.070 / 0.140
G13     309.3          29.0                4.2 +/-    1.69       7.5 +/-    1.69  0.090 / 0.140
G17     205.5          39.0                8.6 +/-    1.61      12.8 +/-    1.61  0.090 / 0.120
G18     79.6           24.1                6.4 +/-    1.90      12.8 +/-    1.90  0.080 / 0.120
G28     317.7          60.9                4.6 +/-    0.76       5.2 +/-    0.76  0.100 / 0.130
G30     16.9           77.8                6.1 +/-    0.41       6.2 +/-    0.41  0.080 / 0.120