PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/26-06:57:50
G01     117.6          18.9                4.5 +/-    2.45      10.3 +/-    2.45  0.040 / 0.040
G07     86.9           64.6                4.2 +/-    0.43       4.6 +/-    0.43  0.030 / 0.040
G08     43.6           27.7                1.6 +/-    0.97       2.9 +/-    0.97  0.040 / 0.040
G09     173.7          20.4                3.9 +/-    1.17       8.6 +/-    1.17  0.030 / 0.030
G11     102.4          40.7                5.9 +/-    0.56       8.5 +/-    0.56  0.130 / 0.330
G13     316.7          21.1                0.3 +/-    2.35       0.6 +/-    2.35  0.180 / 0.280
G17     201.1          28.4                4.1 +/-    0.80       7.5 +/-    0.80  0.110 / 0.290
G18     90.2           21.2                4.4 +/-    1.43       9.4 +/-    1.43  0.090 / 0.330
G28     293.5          57.2                3.6 +/-    0.81       4.2 +/-    0.81  0.120 / 0.240
G30     345.7          68.9                2.3 +/-    1.06       2.4 +/-    1.06  0.130 / 0.220