PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/28-10:42:40
G01     124.0          14.1                4.2 +/-    1.54      10.6 +/-    1.54  0.040 / 0.040
G07     64.9           68.6                3.6 +/-    0.41       3.8 +/-    0.41  0.030 / 0.030
G08     46.9           34.1                2.8 +/-    0.92       4.5 +/-    0.92  0.030 / 0.030
G09     175.6          29.4                4.8 +/-    2.42       8.6 +/-    2.42  0.030 / 0.030
G11     112.1          37.4                4.3 +/-    1.22       6.5 +/-    1.22  0.110 / 0.250
G13     319.9          15.1                1.7 +/-    2.68       4.2 +/-    2.68  0.130 / 0.240
G17     199.7          20.4                3.1 +/-    2.77       6.7 +/-    2.77  0.150 / 0.330
G18     99.3           18.4                3.3 +/-    1.81       7.5 +/-    1.81  0.090 / 0.280
G28     281.9          54.6                1.0 +/-    2.97       1.2 +/-    2.97  0.120 / 0.180
G30     334.8          62.2                2.7 +/-    0.54       3.0 +/-    0.54  0.090 / 0.180