PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/04-12:42:40
G01     115.7          20.3                7.1 +/-    1.39      15.4 +/-    1.39  0.040 / 0.050
G07     89.9           64.4                6.0 +/-    0.39       6.5 +/-    0.39  0.050 / 0.070
G08     43.3           26.9                5.5 +/-    1.62      10.3 +/-    1.62  0.110 / 0.140
G09     175.0          20.3                6.6 +/-    2.05      14.5 +/-    2.05  0.100 / 0.120
G11     100.4          41.2                8.0 +/-    1.02      11.3 +/-    1.02  0.050 / 0.110
G13     315.6          22.6                2.5 +/-    2.03       5.2 +/-    2.03  0.040 / 0.100
G17     202.3          29.3                6.1 +/-    1.57      10.9 +/-    1.57  0.030 / 0.040
G18     89.7           22.1                5.7 +/-    1.11      11.8 +/-    1.11  0.040 / 0.040
G28     299.5          58.6                3.9 +/-    0.67       4.5 +/-    0.67  0.030 / 0.040
G30     350.8          70.9                5.7 +/-    0.46       6.0 +/-    0.46  0.040 / 0.050